TECHNICAL FIELD

[0001] The present disclosure relates to electrical assemblies, in general, and to power distribution units and controllers, in particular.

BACKGROUND

[0002] Data centers traditionally utilize power distribution within computer cabinets to supply power to the computer systems located within the racks. Historically, for reasons of cost, the majority of these power distribution systems installed in data centers are simple electrical power strips without any intelligent control.

[0003] As costs of intelligent controllers have decreased, the usage of intelligent power distribution systems have increased. These intelligent power distribution systems may include environmental monitoring, cabinet access control, power relays, current metering, fire suppression systems.

[0004] U.S. Patent 9,490,664, entitled "AC power strip device having interchangeable control modules", shows a power strip assembly which has an interchangeably attached control module to a dedicated connection interface. The power strip switched outlets do not function if the control module is removed.

[0005] U.S. Patent 8,549,062, entitled "Network remote power management outlet strip", shows a power distribution assembly including an integral computer which controls associated relays, including the power on boot sequence. The computer controller is designed to operate in an integral housing mountable in an electrical equipment rack and depends for its operation on the computer controller.

[0006] U.S. Patent 8,543,714, entitled "Local power management unit and power management system employing the same", shows a network based management unit controlling and monitoring multiple power distribution units, under the administration of a remote management system. BRIEF SUMMARY

[0007] For many data centers the need to utilize intelligent power distribution systems is apparent. The deployment of this technology may be limited by budget or the still evolving capabilities of the computer controller technology. What is needed is a modular package allowing the customer to install the electrical power strips and the computer controller separately. The advantages are numerous including modular upgrades of each assembly. This may be beneficial as the required number of power outlets in the second assembly change or the features in the first computer assembly grow. Additional benefits of a removable computer controller assembly may include ease of maintenance or repair while allowing the power distribution assembly to continue functioning.

[0008] The present disclosed subject matter decouples the computer controller assembly from the power distribution assembly while maintaining the ability for each assembly to operate independently or to operate as a single integrated assembly.

[0009] The computer controller assembly may be decoupled from any associated remote management system. The computer controller assembly may contain circuitry capable of self-administration and is able to operate in the absence of a remote management system or when the remote management system is unreachable, such as due to a network failure.

[0010] One exemplary embodiment of the disclosed subject matter is a power distribution assembly comprising an electrical input, one or more electrical outputs, a communication interface, one or more submodules, each of which comprising a memory and a relay, wherein said power distribution assembly is configured to be connected to a control assembly via said communication interface, wherein said power distribution assembly is configured to be controlled by the control assembly using instructions received via said communication interface, wherein said memory retaining instructions previously received from the control assembly, wherein said relay is configured to operate based on instructions retained in said memory in absence of instructions received via said communication interface.

[0011] Optionally, said memory retaining a boot-up sequence of said relay of a submodule as instructed by the control assembly, whereby said power distribution assembly is capable of performing the boot-up sequence when disconnected from the control assembly.

[0012] Optionally, upon boot-up of said power distribution assembly, said power distribution assembly is configured to retrieve the boot-up sequence from memory, wherein in response to the boot-up sequence indicating turning on said relay of the submodule, said power distribution assembly is configured to turn on said relay.

[0013] Optionally, the boot-up sequence indicates turning on said relay after a time delay, wherein said power distribution is configured to turn on said relay after the time delay.

[0014] Optionally, said power distribution assembly is configured to receive an override instruction from the control assembly via said communication interface, wherein in response to receiving the override instruction, said power distribution assembly is configured to avoid performing the boot-up sequence and instead act upon one or more other instructions received from the control assembly via said communication interface.

[0015] Optionally, upon boot-up of said power distribution assembly, said power distribution assembly is configured to retrieve the boot-up sequence from memory, wherein in response to the boot-up sequence indicating said relay be set at an OFF state, said power distribution assembly is configured to avoid turning on said relay of the submodule, whereby leaving said relay at the OFF state.

[0016] Optionally, said relay is configured to retain a state of said power distribution assembly in said memory, wherein the state is defined by the control assembly, wherein said power distribution assembly is configured to retrieve a state from the memory and operate as defined by the state, whereby said power distribution assembly is capable of continuing operation when disconnected from the control assembly. [0017] Optionally, said power distribution assembly is configured to store in said memory of a submodule a boot-up sequence received from the control assembly via said interface, whereby the boot-up sequence is usable by said power distribution assembly upon a next boot-up irrespective of whether the control assembly is in communication with said power distribution assembly.

[0018] Optionally, the boot-up sequence is a sub-portion of a distributed boot-up sequence provided to the control assembly, wherein the distributed boot-up sequence relates to a plurality of power distribution assemblies.

[0019] Another exemplary embodiment of the disclosed subject matter is a control assembly comprising a controller and a communication interface, wherein said control assembly is configured to be connected to a slave assembly via said communication interface, wherein the slave assembly is a power distribution assembly, wherein the slave assembly comprising one or more submodules, wherein said controller is configured to control the one or more submodules using instructions transmitted via said communication interface, wherein the instructions comprise a boot-up sequence configuration, wherein the boot-up sequence configuration is sent to the slave assembly during regular operation and not as part of a boot-up operation.

[0020] Optionally, said control assembly is configured to be connected to a plurality of slave assemblies, which are connected directly or indirectly to said communication interface or to one or more additional communication interfaces.

[0021] Optionally, said control assembly is configured to receive a master boot-up sequence configuration, wherein said control assembly is configured to partition the master boot-up sequence configuration to a plurality of boot-up sequence configurations, each of which associated with a different submodule of the plurality of slave assemblies, wherein said control assembly is configured to transmit, during regular operation and not part of a boot-up operation, each of the plurality of boot-up sequence configurations to a slave assembly associated therewith.

[0022] Optionally, the master boot-up sequence comprises a plurality of turning on timing delay, each of which being associated with an identifier, wherein the identifier identifies an assembly for which the turning on timing delay is applicable.

[0023] Optionally, the master boot-up sequence is locally retained in a memory of said control assembly.

[0024] Optionally, the master boot-up sequence is transmitted to said control assembly from a remote management system, wherein the remote management system is not in communication with said control assembly during execution of the master boot-up sequence.

THE BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0025] The present disclosed subject matter will be understood and appreciated more fully from the following detailed description taken in conjunction with the drawings in which corresponding or like numerals or characters indicate corresponding or like components. Unless indicated otherwise, the drawings provide exemplary embodiments or aspects of the disclosure and do not limit the scope of the disclosure. In the drawings:

[0026] FIG. 1 shows a sensor and power control sub-module, a power strip subassembly module and a power socket adaptor, in accordance with some exemplary embodiments of the disclosed subject matter;

[0027] FIG. 2 shows a power distribution assembly with a sensor and power control sub-module coupled to a power strip sub-assembly module, in accordance with some exemplary embodiments of the disclosed subject matter;

[0028] FIG. 3 shows panel mounted hybrid female power socket and male power plug with AC voltage power contacts and low voltage power and signal contacts, in accordance with some exemplary embodiments of the disclosed subject matter;

[0029] FIG. 4 shows panel mounted female power socket and male power plug with AC voltage power contacts, in accordance with some exemplary embodiments of the disclosed subject matter;

[0030] FIG. 5A-5B shows an assembly of a sensor and power control sub-module securely coupled to a power strip sub-assembly module, in accordance with some exemplary embodiments of the disclosed subject matter;

[0031] FIG. 6 shows two identical power strip sub-assemblies with power input and power output sockets on their end sides, in accordance with some exemplary embodiments of the disclosed subject matter;

[0032] FIG. 7 shows a power distribution assembly with two power strips subassembly, in accordance with some exemplary embodiments of the disclosed subject matter; [0033] FIG. 8a shows a power distribution assembly with low voltage power and signals cable, in accordance with some exemplary embodiments of the disclosed subject matter;

[0034] FIG. 8b shows a power distribution assembly with low voltage power and signals cable, in accordance with some exemplary embodiments of the disclosed subject matter

[0035] FIG. 9 shows a power and sensor distribution unit assembly, in accordance with some exemplary embodiments of the disclosed subject matter;

[0036] FIG. 10 shows an sensor distribution unit assembly, in accordance with some exemplary embodiments of the disclosed subject matter;

[0037] FIG. 11 shows a power and sensor distribution unit assembly, in accordance with some exemplary embodiments of the disclosed subject matter;

[0038] FIG. 12 shows a simple power distribution unit assembly, in accordance with some exemplary embodiments of the disclosed subject matter; and

[0039] FIG. 13 shows a computer cabinet with computers, a 0U mounted sensor and power distribution unit assembly, in accordance with some exemplary embodiments of the disclosed subject matter.

[0040] FIG. 14 shows a power strip with CI 9 power cable plugging into IEC C20 input socket, in accordance with some exemplary embodiments of the disclosed subject matter.

[0041] FIG. 15 shows a power distribution assembly with a power control module coupled to a power strip and toolless mounting screws that can slide on the rear of the assembly, in accordance with some exemplary embodiments of the disclosed subject matter.

[0042] FIG. 16a shows a power distribution assembly with a power control module coupled to a power strip mounted on a plate via their toolless mounting screws, in accordance with some exemplary embodiments of the disclosed subject matter.

[0043] FIG. 16b shows a power distribution assembly with a power control module coupled to a power strip, mounted on a mounting plate via their toolless mounting screws, in accordance with some exemplary embodiments of the disclosed subject matter.

[0044] FIG. 17 shows the internal cabling and connections of a switched power strip, in accordance with some exemplary embodiments of the disclosed subject matter.

[0045] FIG. 18a shows a power distribution assembly with a power control module coupled to a power strip, in accordance with some exemplary embodiments of the disclosed subject matter.

[0046] FIG. 18b shows a power distribution assembly where a power strip is no longer coupled and powered by the power control module, in accordance with some exemplary embodiments of the disclosed subject matter.

[0047] FIG. 19a shows a power distribution assembly with a power control module coupled to a switched power strip, in accordance with some exemplary embodiments of the disclosed subject matter.

[0048] FIG. 19b shows a power distribution assembly where a switched power strip is no longer coupled and powered by the power control module, in accordance with some exemplary embodiments of the disclosed subject matter.

[0049] FIG. 20a and 20b show flowchart diagrams of boot-up processes, in accordance with some exemplary embodiments of the disclosed subject matter.

[0050] FIG. 21 shows a removable main controller sub-module, in accordance with some exemplary embodiments of the disclosed subject matter.

[0051] FIG. 22 shows a diagram of a main controller assembly connected to multiple smart power strip assemblies, in accordance with some exemplary embodiments of the disclosed subject matter.

[0052] FIG. 23 shows a diagram of a power distribution main controller assembly connected to multiple smart power strip assemblies, in accordance with some exemplary embodiments of the disclosed subject matter. DETAILED DESCRIPTION

[0053] The present disclosed subject matter decouples the computer controller assembly from the power distribution assembly while maintaining the ability for each assembly to operate independently or to operate as a single integrated assembly.

[0054] An important feature in a modern power distribution system is the ability to control the inrush of current imposed by the high energy requirements of the data equipment when power is restored following a data center power failure. The data equipment power up sequence may be controlled by a data center wide system capable of sending commands to the many distributed power distribution assemblies located throughout the data center. In some cases, the computer control assembly may control the sequence of power restoration through its control of the power distribution assembly.

[0055] In some exemplary embodiments of the disclosed subject matter, the disclosed subject matter may not rely on the data center wide system or the computer control assembly to control the power sequence of power restoration of the data equipment.

[0056] The computer controller assembly is decoupled from any associated remote management system. The computer controller assembly contains circuitry capable of self-administration and is able to operate in the absence of a remote management system or when the remote management system is unreachable, such as due to a network failure. It will be noted that the remote management system may be implemented via a dedicated server, a cloud-based server that is controllable using web-based client, an embedded server, or the like.

[0057] The computer controller assembly may be securely attached to the power strip assembly thus providing a small, coupled package in the limited space available in a computer rack. The computer controller assembly may be added at a later time onto the power strip assembly thereby reducing the initial cost of the power distribution system to that of the power assembly while maintaining the ability to later add the computer controller assembly. The computer controller assembly may be easily added to the power strip assembly thereby reducing installation time and costs. The computer controller assembly may be easily removed from the power strip assembly to allow for upgrade, maintenance or repair leaving the power strip assembly in operation while said repair to the computer assembly takes place.

[0058] The disclosed subject matter provides for a modular design composed of a simple or intelligent power strip or an additional interface module that can be securely attached at a later time to an intelligent controller. Additionally or alternatively, modular power strips in accordance with the design may be connected to one another. The connection may be a rigid connection occupying relatively minimal space, thereby assisting in efficiently utilizing the limited space within the computer cabinet. In some exemplary embodiments, the rigid connection may be a separate connector. Additionally or alternatively, the rigid connection may be part of the sub-assembly modules themselves. In some exemplary embodiments, the rigid connector may connect corresponding input and output sockets in the subassemblies. In some exemplary embodiments, the input socket may be a standard socket that can be connected using a standard wire to a socket of a mains electricity, such as a wall power outlet.

[0059] In accordance with some exemplary embodiments of the disclosed subject matter, each sub-assembly module of the disclosed subject matter may be completely functional in a standalone manner, and may function irrespective of whether other sub-assembly modules are connected thereto.

[0060] Described herein are embodiments of a modular power distribution assembly used in computer cabinet. The modular power distribution assembly is composed of two or more modules that can be used independently. The modules may include, for example, a power strip sub-assembly module, a sensor and power control subassembly module, or the like. The modular power distribution assembly may be used, inter alia, for power distribution units, for environment monitoring systems, for fire protection systems, combination thereof, or the like. The modular power distribution assembly may be mounted within a computer cabinet. In some exemplary embodiments, each sub-assembly may comprise a plurality of electrical sub-modules, such as but not limited to controllers, sensors, power outlets, or the like. In some exemplary embodiments, the sub-assembly modules may be modular and may enable a user to replace the electrical modules therein per the user's needs. The modular sub-assemblies may be implemented in a manner similar to that described in PCT application PCT/US 16/46225, entitled "MODULAR ASSEMBLY HOUSING", filed on August 10, 2016, assigned to the applicant of the present application, which is hereby incorporated by reference in its entirety for all purposes without giving rise to disownment.

[0061] In some exemplary embodiments, the sub-assembly modules themselves may not be directly coupled to each other. Instead a rigid connector having a socket on one end thereof and a plug on an opposing end, may be used to electrically and mechanically connect the sub-assemblies. In some exemplary embodiments, the input and output sockets in the sub-assembly may be standard sockets which can also be used for other purposes or connecting third party cables or units. In such an embodiment, input socket may be connected via a wired connection to an output power socket in the electricity grid instead of being connected to another subassembly module.

[0062] In some exemplary embodiments, smart power strip sub-assemblies may include sub-assembly modules for power controlling the power outlets which may include a microcontroller, a memory and a power relay feeding power to the outlet, where the memory retains the power relay outlet status and boot-up sequencing information, allowing the smart power strip sub-assembly to function independently from a controller sub-assembly.

[0063] In some exemplary embodiments, the connector may be rigid and would not allow for substantive bending (e.g., more than about 5%, 10%, 20% change or the like). As such the rigid connector may not be a cable which is known to be flexible and can be bent.

[0064] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosed subject matter. It will be further understood that the term "electrical" when used in the present specification, is intended to include the various forms of electrical circuits or components, without restrictions of low or high voltage, and/or Alternating Current (AC) or Direct Current (DC) voltage type, signal or power. "Electrically coupled" means functionally coupled using electrical means.

[0065] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. It will be further understood that the term "connector" when used in this specification, is intended to include the various forms of electrical component meant to interconnect two sockets, without restrictions of voltage, signal or power.

[0066] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosed subject matter. It will be further understood that the terms "network communication" and "expansion communication" when used in the present specification, is intended to include the various forms of communication means and protocols without limitations, of wired interfaces such as Ethernet, Universal Asynchronous Receiver/Transmitter (UART), RS232, RS485, ModBus, Controller Area Network (CAN bus), Small Computer System Interface (SCSI), Universal Serial Bus (USB), Serial AT Attachment (SAT A), IEEE 1694, Inter-Integrated Circuit (I2C), SCSI Parallel Interface (SPI) or the like. Additionally or alternatively, the terms "network communication" and "expansion communication" may comprise a wireless interfaces such as Bluetooth, Zigbee, Xbee, Radio Frequency, WiFi, Near-field communication (NFC), Global System for Mobile Communications (GSM), General Packet Radio Services (GPRS), Enhanced Data rates for GSM Evolution (EDGE) or the like.

[0067] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosed subject matter. It will be further understood that the terms "relay" or "power relay" when used in the present specification, is intended to include the various forms of power switching circuits such as general purpose contact relay, solid state relay (SSR), bipolar junction transistors (BJT), thyristor, silicon controlled rectifier (SCR) or the like.

[0068] For the purposes of describing some exemplary embodiments of the disclosed subject matter, the elements appearing in the drawings are as follows:

10 - a sensor and power control sub-assembly module

11 - a power strip sub-assembly module

12 - a rigid connector

13 - an AC power input cable

14 - an AC power female socket

15 - an AC power male socket

20 - a power distribution unit assembly

100 - a main controller sub-module

101 - a power meter sub-module

102 - a power relay sub-module

110 - a 8x power output socket gang sub-module

111 - a 4x power output locking socket gang sub-module

150 - sensor interface ports

151 - a network communication interface port

152 - an expansion communication interface port

300 - a hybrid high and low voltage female socket

301 - a hybrid high and low voltage male socket

310 - holes for AC voltage pins

311 - AC voltage pins

320 - holes for low voltage power and signal pins 321 - low voltage power and signal pins

400- an AC power plug

500- an AC power socket locking connector

510- a locking receiver

520- a locking tab

530- an AC power output locking socket

540- an AC power locking socket

550- a locking plate

560- a locking screw

800- a DB-9 male connector

801 - aRJll connector

810- a DB-9 female/female cable

811— a RJ11 cable

820- Housing top face

850- a communication module

900- a power and sensor distribution unit assembly

910- a control sub-assembly module

911 - a sensor and power strip sub-assembly module

920- a four sensor interface sub-module

930- a hybrid high and low voltage male socket

940- a hybrid high and low voltage connector

1000 - a sensor distribution unit assembly

1010 - a sensor sub-assembly module

1100 - a ten Dry contact sub-module 1200 - a power distribution unit assembly

1300 - a computer cabinet

1310 - a 1U mounted sensor sub-assembly control module

1320 - a 0U sensor and power distribution unit assembly

1330 - a temperature sensor

1340 - a 1U rack computer

1350 - a 1U emplacement

1501 - a toolless mounting screw

1502 - a rear channel sliding slot

1503 - a rear channel

1504 - a right arrow

1505 - a left arrow

1601 - a mounting plate

1602 - a mounting hole

1700 - a switched power strip

1701 - AC voltage power wires

1702 - an internal power and communication bus

1703 - a two power relay board with a microcontroller

1704 - an internal AC/DC power supply

1705 - a power and communication interface board

2100 - a removable main controller sub-module

2101 - a main controller sub-module enclosure

2102 - an assembly screw

2103 - an assembly hole 2210 - a main controller assembly

2211 - a main controller sub-module

2212 - a power and communication interface sub-module

2215 - an internal communication bus

2216 - an external power and communication bus

2217 - a slave power and communication interface sub-module

2218 - a second internal communication bus

2219 - a secondary microcontroller with internal memory

2220 - a first three switched outlets and one non-switched outlet power strip 2230 - a second five switched outlets power strip

2240 - a third eight switched outlets power strip

2250 - a fourth metered four outlets power strip

2251 - a one switched outlet sub-module

2252 - a two switched outlet sub-module

2253 - a three switched outlet sub-module

2254 - a four switched outlet sub-module

2255 - a power controlled relay

2261 - a one outlet sub-module

2264 - a four outlet sub-module

2270 - a power meter sub-module

2310 - a power distribution main controller assembly

[0069] Referring now to Figure 1, showing an embodiment of a power distribution unit assembly 20, in accordance with some exemplary embodiments of the disclosed subject matter.

[0070] The power distribution unit assembly 20 is composed of a sensor and power control sub-assembly module 10, a rigid connector 12, and a power strip subassembly module 1 1.

[0071] The sub-assembly module 10 comprises a main controller sub-module 100 which includes sensor ports 150, a network communication port 151 and an expansion communication port 152; a power metering sub-module 101 ; and a power relay sub-module 102.

[0072] Input socket (not shown) is placed on a distal end of sub-assembly module 10. an AC power input cable 13 is connected to the input socket. An output socket, AC power female socket 14 is placed on the proximal end of sub-assembly module 10.

[0073] Similarly, input socket, AC power male socket 15, is located on one end of the housing of sub-assembly module 1 1. Optionally, an output socket is located on an opposing end of the housing of sub-assembly module 11. In some exemplary embodiments, the input sockets of sub-assembly modules 10, 1 1 are of the same type. Additionally or alternatively, the output sockets of sub-assembly modules 10, 1 1 are of the same type. In some exemplary embodiments, sub-assembly module 11 may be used independently without connecting it to sub-assembly module 10, such as using AC power input cable 13.

[0074] The power strip sub-assembly module 11 may comprise a 8x power output socket gang sub-module 110 and a 4x power output locking socket gang sub-module 1 11.

[0075] Rigid connector 12 may be utilized to connect between sub-assembly module 10 and sub-assembly module 1 1 thereby providing for a power distribution unit assembly 20 incorporating the functionality of all sub-modules in each subassembly.

[0076] It will be noted that two modules' mating power sockets may be utilized, such as but not limited to the following exemplary type of sockets. [0077] It will be noted that sensor ports 150 may be utilized, for example, to connect fire detection devices such as smoke detectors, fire alarms system output or the like. The fire detection devices may be used in conjunction of the power relay sub- module 102 to power down the sub-assembly module 1 1 in case of fire.

[0078] Referring now to Figure 2, the figure shows a 3D view of embodiment of a power distribution unit assembly 20, in accordance with some exemplary embodiments of the disclosed subject matter. Assembly 20 comprises sub-assembly module 10 connected to sub-assembly module 1 1 via rigid connector 12. Power input to the assembly 20 is provided via AC power input cable 13.

[0079] Rigid connector 12 may provide for an electrical and mechanical coupling between the two sub-assembly modules. In some exemplary embodiments, upon connecting the two sub-assembly modules 10, 11 , the sub-assemblies may be connected serially along a single axis spanning between the distal and proximal ends of both sub-assembly modules 10, 1 1.

[0080] Due to the rigid connector 12 being rigid, there may be a reduced likelihood that due to forces applied on the assembly 20, rigid connector 12 would be disconnected, in comparison to other non-rigid connectors, such as cables.

[0081] Rigid connector 12 may be of relatively short length, such as but not limited to about 10cm, about 20cm, about 25cm or the like. Limited length may preserve space when assembly 20 is mounted within a computer cabinet.

[0082] Referring now to Figure 3, showing a 3D view of embodiment of a sensor and power control sub-module 10 with a hybrid high and low voltage female socket 300 on one end of its housing and a power strip sub-assembly module 11 with a hybrid high and low voltage male socket 301 on one end of its housing, in accordance with some exemplary embodiments of the disclosed subject matter.

[0083] The hybrid high and low voltage female socket 300 includes holes for AC voltage pins 310 and holes for low voltage power and signal pins 320.

[0084] The hybrid high and low voltage male socket 301 includes AC voltage pins 311 and low voltage power and signal pins 321. [0085] In some exemplary embodiments, the modules may be coupled together via a hybrid connectors which includes both AC voltage and low voltage power and signals, allowing the sensor and power control sub-module to control advanced features enclosed in the power strip sub-assembly module. In some exemplary embodiments, high voltage may be voltage commonly found in computer data centers electricity, such as 110V to 480V AC or may be voltage of telecom electricity power supply such as 12VDC to 72VDC. Low voltage may be lower voltage, such as about 5V, 9V 12V, any voltage in the range between about 5V and about 12V, or any voltage lower or equal to about 50V. In some exemplary embodiments, the high voltage may be used to provide power supply to power output sockets in power strip sub-assembly module 11, which may be used to power components mounted within a computer cabinet. The low voltage may be used to provide power supply and signals to electronic boards with sensor inputs or controlled outputs.

[0086] It will be noted that two hybrid mating power sockets may be utilized, such as but not limited to the following exemplary type of sockets or form factor. Additionally or alternatively, hybrid mating power sockets may be utilized with or without use of a rigid connector, such as 12 of Figure 1.

[0087] In some exemplary embodiments, hybrid high and low voltage female socket 300 may be connected to a non-hybrid male socket (not shown) comprising either AC voltage pins 311 or low voltage power and signal pins 321. In some exemplary embodiments, holes for AC voltage pins 310 may be configured in size, shape and location to match AC voltage pins of standard connectors, such as plug types listed in IEC technical report TR 60083, Plugs and socket-outlets for domestic and similar general use standardized in member countries of IEC (e.g., type A, type B, type C, type F). In such a configuration, some functionalities of sub-assembly module 10 may not function properly. However, AC power supply may be provided through sub-assembly module 10 to sub-assembly module 11.

[0088] Referring now to Figure 4, showing a 3D view of embodiment of a sensor and power control sub-module 10 with an AC power male socket 15 on one end of its housing and a power strip sub-assembly module 11 with an AC power plug 400 on one end of its housing, in accordance with some exemplary embodiments of the disclosed subject matter. In some exemplary embodiments, the modules may be directly coupled together through such mating power socket and power plug.

[0089] It will be noted that two modules' mating power sockets may be utilized, such as but not limited to the following exemplary type of sockets.

[0090] Referring now to Figure 5 a and 5b, showing a 3D view of embodiment of a power distribution unit assembly 20, in accordance with some exemplary embodiments of the disclosed subject matter.

[0091] The power distribution unit assembly 20 in Figure 5a is composed of a sensor and power control sub-assembly module 10 securely coupled to a power strip subassembly module 1 1 through an AC power socket locking connector 500. The locking connector 500 comprising locking receivers 510 which are configured to matingly couple with locking tabs 520. Locks tabs 520 are formed as part of sockets 530 and 540. Locking tabs 520 may provide for a secure attachment of connector 500, while providing for a fast release mechanism to detach connector 500 when desired.

[0092] The secure connection may ensure that connector 500 does not disconnect unintentionally, such as when a cable connected to one of the sub-assembly modules is pulled.

[0093] The power distribution unit assembly 20 in Figure 5b is composed of a sensor and power control sub-assembly module 10 coupled to a power strip subassembly module 1 1 through a rigid connector 12 and securely attached by the mean of locking plates 550 and screws 560. The locking plates 550 are securely attached to the housing of the sub-assembly modules 10 and 1 1 by the mean of locking screws 560 that are screwed into corresponding threaded holes in the sub-assembly modules 10, 11 (not shown). Other securing means may be used as well, such as but not limited to snap buttons, zipper, hooks and corresponding loops, or the like.

[0094] Referring now to Figure 6, showing a 3D view of embodiment of two identical power strip sub-assembly modules 1 1 , in accordance with some exemplary embodiments of the disclosed subject matter. The power strip sub-assembly modules 1 1 include a power input AC power male socket 15 on one end of their housings and an AC power female socket 14 on the other end of their housings. The sockets may be standard sockets that can be used to connect between the two sub-assembly modules via a rigid connector (not shown), via a standard cable, or using another connector. Additionally or alternatively, the standard input socket may be connected via a standard cable to a wall power outlet.

[0095] Referring now to Figure 7 showing a 3D view of embodiment of a power distribution unit assembly 20, in accordance with some exemplary embodiments of the disclosed subject matter.

[0096] The power distribution unit assembly 20 is composed of a sensor and power control sub-assembly module 10 and two power strip sub-assembly modules 11. Sensor and power control sub-assembly module 10 comprises sockets at both ends thereof. The socket on the distal end may be an input socket, while the socket at the proximal end (AC power female socket 14) may be an output socket. Input socket may be connected to a power source feeding power to power distribution unit assembly 20 via AC power input cable 13. Each consecutive pair of sub-assembly modules, such as 10 and 11 , and 1 1 and 11 , are connected using a rigid connector 12. Rigid connector 12 is used to connect output power socket 14 in one sub-assembly module with corresponding input power socket 15 in the other sub-assembly module.

[0097] In some exemplary embodiments, the number of power strip sub-assembly module may be more than two units chained, allowing a simple way to expand the total number of outlets. Additionally or alternatively, a plurality of sensor and power control sub-assemblies may be chained thereby allowing for extension of the functionality of the assembly to include aggregated functionalities of the different sub-assemblies.

[0098] Referring now to Figure 8a showing a 3D view of embodiment of a power distribution unit assembly 20 with a communication bridge between two subassembly modules, in accordance with some exemplary embodiments of the disclosed subject matter.

[0099] In some exemplary embodiments, the communication bridge may includes, without limitations, wired interfaces such as Universal Asynchronous Receiver/Transmitter (UART), Small Computer System Interface (SCSI), Universal Serial Bus (USB), Serial AT Attachment (SATA), IEEE 1694, Inter-Integrated Circuit (I2C), SCSI Parallel Interface (SPI) or the like. Additionally or alternatively, the communication bridge may comprise a wireless interfaces such as Bluetooth, Zigbee, Xbee, Radio Frequency, WiFi, Near-field communication (NFC) or the like.

[00100] The power distribution unit assembly 20 is composed of a sensor and power control sub-assembly module 10 and a power strip sub-assembly module 11. The sensor and power control sub-assembly module 10 and the power strip subassembly module 11 may comprise a communication module 850 with a DB-9 male connectors 800 comprising low voltage power and signals, located on the top face 820 of their respective housings.

[00101] The sensor and power control sub-assembly module 10 and the power strip sub-assembly module 11 may be coupled through an AC power socket rigid connector 12 for AC power. Additionally or alternatively, the sub-assembly module 10 and sub-assembly module 11 may be coupled through a DB-9 female to female cable 810 for low voltage power and signals. The low voltage may be used to provide power supply and signals to electronic controllers providing features such as sensor inputs, controlled outputs, controlled inputs, communications subassemblies, power measurement, and the like, which are included in the sub-assembly module 11.

[00102] Referring now to Figure 8b showing another 3D view of embodiment of a power distribution unit assembly 20 with a communication bridge between two sub-assembly modules, in a similar way as shown in figure 8a, in accordance with some exemplary embodiments of the disclosed subject matter.

[00103] The power distribution unit assembly 20 is composed of a sensor and power control sub-assembly module 10 and a switched power strip sub-assembly module 1700. The sensor and power control sub-assembly module 10 and the switched power strip sub-assembly module 1700 may comprise a communication module 850 with two RJl l connectors 801 comprising low voltage power and signals, located on the top face 820 of their respective housings.

[00104] The sensor and power control sub-assembly module 10 and the switched power strip sub-assembly module 1700 may be coupled through an AC power socket rigid connector 12 for AC power. Additionally, the sub-assembly module 10 and sub-assembly module 1700 may be coupled through a RJl l female to female cable 81 1 for low voltage power and signals in order to control the subassembly module 1700.

[00105] Referring now to Figure 9 showing a 3D view of embodiment of a power and sensor distribution unit assembly 900, in accordance with some exemplary embodiments of the disclosed subject matter.

[00106] The power and sensor distribution unit assembly 900 is composed of a control sub-assembly module 910 and a power strip sub-assembly module 911 that are electronically and physically connected by a hybrid high and low voltage connector 940.

[00107] Control sub-assembly 910 may comprise an AC power input cable 13 at one end of its housing, a main controller sub-module 100 and a hybrid high and low voltage male socket 930 at the other end of its housing.

[00108] Power strip sub-assembly module may comprises a hybrid high and low voltage input socket 301 at one end of its housing, a four sensor interface port sub-module 920, a 8x power output socket gang sub-module 110, a hybrid high and low voltage output socket 930 on the other end of its housing

[00109] The control sub-assembly module 910 and the sensor and power strip sub-assembly module 911 may be coupled through the hybrid high and low voltage connector 940, providing for at least two different forms of signals to be transferred from one another, such as AC voltage power of the mains electricity (referred to as "high" voltage power) and another voltage power lower than the AC voltage power. In some exemplary embodiments, the low voltage power may be used to transmit communication signals between the two sub-assembly modules 910, 911.

[00110] Referring now to Figure 10 showing a 3D view of embodiment of a sensor distribution unit assembly 1000, in accordance with some exemplary embodiments of the disclosed subject matter.

[00111] The sensor distribution unit assembly 1000 provides for monitoring environmental sensors and controlling environmental outputs. It provides the ability to extend the capabilities of a control sub-assembly module 910 already installed in the field by adding new sub-assembly modules 1010 with additional input and output interfaces. Sensor distribution unit assembly 1000 is composed of a control subassembly module 910 which comprises an AC power input cable 13 at one end of its housing, a main controller sub-module 100 and a hybrid high and low voltage male socket 930 at the other end of its housing; of a sensor sub-assembly module 1010 which comprises a hybrid high and low voltage input socket 301 at one end of its housing, a four sensor interface sub-module 920, and a hybrid high and low voltage output socket 930 on the other end of its housing; and of a hybrid high and low voltage connector 940.

[00112] The control sub-assembly module 910 and the sensor sub-assembly module 1010 being coupled through the hybrid high and low voltage connector 940, providing high voltage power, low voltage power and communication signals between the control sub-assembly module 910 and the sensor sub-assembly module 1010.

[00113] Referring now to Figure 11 showing a 3D view of embodiment of a power and sensor distribution unit assembly 900, in accordance with some exemplary embodiments of the disclosed subject matter.

[00114] The power and sensor distribution unit assembly 900 is composed of a control sub-assembly module 910 which comprises an AC power input cable 13 at one end of its housing, a main controller sub-module 100, a ten dry contact sub- module 1100 and a hybrid high and low voltage male socket 930 at the other end of its housing; of a power strip sub-assembly module 11 which comprises a hybrid high and low voltage input socket 301 at one end of its housing, a 8x power output socket gang sub-module 110, and a hybrid high and low voltage output socket 930 on the other end of its housing; and of a hybrid high and low voltage connector 940.

[00115] The control sub-assembly module 910 and the power strip subassembly module 11 being coupled through the hybrid high and low voltage connector 940, providing high voltage power, low voltage power and communication signals between the control sub-assembly module 910 and the power strip sub-assembly module 11.

[00116] The ten dry contact sub-module 1100 may provide multiple inputs in a relatively compact size allowing physical monitoring of appliance status which may be powered by the power strip sub-assembly module.

[00117] Referring now to Figure 12 showing a 3D view of embodiment of a power distribution unit assembly 1200, in accordance with some exemplary embodiments of the disclosed subject matter.

[00118] The power distribution unit assembly 1200 is composed of a first power strip sub-assembly module 11 which comprises an AC power input cable 13 at one end of its housing, on its top face 820, a 8x power output socket gang sub- module 110 and an AC power female socket 14 at the other end of its housing; a second power strip sub-assembly module 11 which comprises an AC power male socket 15 at one end of its housing, a 8x power output socket gang sub-module 110 and an AC power female socket 14 at the other end of its housing; and an AC power socket connector 12.

[00119] The first power strip module 11 and the second power strip subassembly module 11 being coupled through an AC power socket connector 12.

[00120] Referring now to Figure 13 showing a computer cabinet, in accordance with some exemplary embodiments of the disclosed subject matter.

[00121] Computer cabinet 1300 comprises a plurality of one rack unit (1U) slots, also referred to as 1U emplacements 1350. 1U rack computers 1340 are mounted in computer cabinet 1300 in corresponding 1U emplacements 1350. The 1U rack computers 1340 are powered by 0U sensor and power distribution unit assembly 1320 in a 0U rack mounting form. Assembly 1320 is attached to an internal frame of the computer cabinet 1300. Assembly 1320 is mounted vertically on the internal frame but without occupying space used by the 1U emplacements 1350. Assembly 1320 is composed of a sensor and power controller sub-module 10 and of a power strip sub-assembly module 11, both coupled by a rigid connector 12. Power input cord 13 is used to provide AC power to assembly 1320. A temperature sensor 1330 is connected to the sensor port 150 of the sensor and power controller sub-module 10.

[00122] Referring now to Figure 14, showing a 3D view of embodiment of a sub-assembly power strip module 11, in accordance with some exemplary embodiments of the disclosed subject matter. The sub-assembly power strip 11 may comprise an AC power male socket 15, a 8x power output socket gang sub-module 110 and a 4x power output locking socket 111. Power input to the sub-assembly power strip module 11 is provided via AC power input cable 13 with an AC power plug 400. The AC power plug 400 may be, but is not limited to, a standard IEC C19 plug to connect to the AC power male socket 15 where the AC power male socket 15 may be but not limited to a standard IEC C20 socket. In some exemplary embodiments, using standard sockets allows for sub-assembly power strip module 11 to function properly when it is decoupled from another sub-assembly.

[00123] Referring now to Figure 15 showing a 3D view of embodiment of a power distribution unit assembly 20, in accordance with some exemplary embodiments of the disclosed subject matter. Assembly 20 comprises a subassembly module 10 connected to sub-assembly module 11 via rigid connector 12. The assembly 20 may comprise toolless mounting screws 1501 which may slide in a rear channel sliding slot 1502 in the direction indicated by arrows 1504 and 1505 and be securely tight into a rear channel 1503. It is to be understood that the toolless mounting screws 1501 describe any means to mount the assembly without the use of any external tool (beside the mounting target area). It is to be understood that the toolless mounting screws may be of any shape and size.

[00124] The toolless mounting screws 1501 attached at the rear channel may be used to securely install and mount the assembly 20 in a computer cabinet using mounting holes available on internal panels.

[00125] Referring now to Figure 16a and Figure 16b showing 3D views of embodiment of a power distribution unit assembly 20, in accordance with some exemplary embodiments of the disclosed subject matter. Assembly 20 comprises a sensor and power control sub-assembly module 10 connected to sub-assembly module 11 via rigid connector 12 and is mounted on a mounting plate 1601 via its toolless mounting screws 1501 through mounting holes 1602 as shown on Figure 16b (not visible on Figure 16a).

[00126] This mounting functionality may provide a rigid assembly of the power distribution unit assembly 20 and may prevent accidental disconnection between the sub-assembly module 10 and the sub-assembly module 11.

[00127] Referring now to Figure 17 showing a 3D view of embodiment of internal cabling and wiring of a switched power strip sub-assembly module 1700, in accordance with some exemplary embodiments of the disclosed subject matter.

[00128] The switched power strip sub-assembly module 1700 may be composed of an AC power male socket 15, an intemal AC/DC power supply 1704, a communication module 850, a two power relay board with a microcontroller 1703 and AC power female sockets 14.

[00129] The internal AC/DC power supply 1704, the two power relay board with a microcontroller 1703 and AC power female sockets 14 may be electrically connected to the AC power male socket via AC voltage power wires 1701.

[00130] The communication module 850 and the two power relay board with a microcontroller 1703 may be electrically connected through the power and communication bus 1702.

[00131] The two power relay board with a microcontroller 1703 may include memory that retains the state of the power relays after power cycle. The two power relay board with a microcontroller 1703 may access its memory to determine whether the switched power strip sub-assembly module 1700 is or is not connected to a sensor and power control sub-assembly module. If the switched power strip subassembly module 1700 is connected to a sensor and power control sub-assembly module, such as through the AC power male socket 15 and the communication module 850, the two power relay board with a microcontroller 1703 may alter its functionality based on commands or configurations issued by the sensor and power control sub-assembly module. If the switched power strip sub-assembly module 1700 is not connected to a sensor and power control sub-assembly module then it may function independently of signals provided through its potential interface. It will be noted that in some cases, the two power relay board with a microcontroller 1703 may be configured to operate only upon receipt of signals from the sensor and power control sub-assembly module. In the absence of a connected sub-assembly module, the two power relay board with a microcontroller 1703 may be configured to operate even though such signals are not received. The memory may retain the determined state for the next computation cycle. In some exemplary embodiments, the memory may retain a last state determined by the sensor and power control sub-assembly module even after such sub-assembly module is disconnected, thereby maintaining the state of operation of the switched power strip sub-assembly module 1700 after the disconnection of the sensor and power control sub-assembly module. Additionally or alternatively, the memory may be used to retain boot-up sequence for the two power relay board with a microcontroller 1703.

[00132] Referring now to Figure 18a showing a 3D view of embodiment of a power distribution unit assembly 20, in accordance with some exemplary embodiments of the disclosed subject matter.

[00133] Assembly 20 comprises a sensor and power control sub-assembly module 10 connected to a power strip sub-assembly module 1 1 via rigid connector 12. Power input to the assembly 20 is provided via AC power input cable 13.

[00134] Referring now to Figure 18b showing a 3D view of embodiment of a power distribution unit assembly 20 shown in Figure 18a, in accordance with some exemplary embodiments of the disclosed subject matter.

[00135] Assembly 20 comprises a sensor and power control sub-assembly module 10 and a power strip sub-assembly module 1 1. The power input to power strip sub-assembly module 1 1 is provided via AC power input cable 13 with standard AC power plug 400 connected to a standard AC power male socket 15.

[00136] It is to be understood that the embodiment herein described in the figure 18a and 18b, describes the ability to disconnect the power strip sub-assembly module 11 from the sensor and power control sub-assembly module 10 and the power strip module 11 is still able to function with just the power input cable 13. This is to describe a relatively simple and easy method to replace a malfunctioning sensor and power control sub-assembly module 10 and to keep the power strip module 1 1 powered and operational while repairing or replacing the sensor and power control sub-assembly module 10, minimising the downtime of the appliances connected to the power strip module 11. It is also to be understood that the power strip module 1 1 may be mounted on a plate while being disconnected from the sensor and power control sub-assembly module 10 and connecting to the power input cable 13, and such replacement of power input source may be performed without a need to unmount the power strip module 11.

[00137] Referring now to Figure 19a showing a 3D view of embodiment of a power distribution unit assembly 20, in accordance with some exemplary embodiments of the disclosed subject matter.

Assembly 20 comprises a sensor and power control sub-assembly module 10 connected to a switched power strip sub-assembly module 1700 via rigid connector 12 and a communication cable 81 1. Power input to the assembly 20 is provided via AC power input cable 13.

[00138] Referring now to Figure 19b showing a 3D view of embodiment of a power distribution unit assembly 20 shown in Figure 19a, in accordance with some exemplary embodiments of the disclosed subject matter. [00139] The switched power input to power strip sub-assembly module 1700 is provided power input via AC power input cable 13 instead of via sensor and power control sub-assembly 10.

[00140] It is to be understood that the embodiment herein described in the figure 19a and 19b, describes the ability to disconnect the switched power strip subassembly module 1700 from the sensor and power control sub-assembly module 10 and the switched power strip module 1700 is still able to function with just the power input cable 13. This is to describe a method to disconnect a control subassembly module 10 and to keep the switched power strip sub-assembly module 1700 powered and operational while repairing or replacing the control sub-assembly module 10, minimising the downtime of the appliances connected to the switched power strip sub-assembly module 1700.

[00141] Referring now to Figure 20a and 20b showing diagrams of a distributed power boot-up sequence of a power distribution unit assembly 20, in accordance with some exemplary embodiments of the disclosed subject matter.

[00142] Figure 20a describes a method of receiving and storing distributed boot-up sequence configuration. . During the regular operation (e.g., normal running time) (2000) of the assembly 20, the main controller sub-module 100 receives a boot-up sequence configuration (2001). The boot-up sequence configuration may be received from a web client, a management server application, or the like. The boot- up sequence configuration may comprise parameters including, but not limited, power relay sub-module identifier, power relay identifier, relay status at boot-up, turning on timing delay, or the like. The boot-up sequence configuration may be stored in the main controller's internal memory (2005). The boot-up sequence configuration may be stored for backup purposes. Additionally or alternatively, the boot-up sequence configuration may be stored for user management purposes. The boot-up sequence configuration may be sent by the main controller to one or more power relay sub-modules (2002). In some exemplary embodiments, the main controller may partition the boot-up sequence configuration to different portions, each of which is transmitted to a different power relay sub-module, based, for example, on the functionality of each sub-module. Additionally or alternatively, the boot-up sequence received (at 2001) may be a-priori defined as comprising different portions to different sub-modules.

[00143] The power relay sub-module may receive the boot-up sequence configuration (2003). In response, the power relay sub-module may store the data in its internal memory (2004).

[00144] Figure 20b describes a method for a distributed boot-up sequence execution on a power relay sub-module 102. When the sub-module powers up (2010), the module waits from communication from the main controller sub-module 100. If it receives communication from the main controller 100 with commands to cancel the boot-up sequence (2012), it ends the boot-up sequence and waits for further commands from the operational main controller 100 (2030), which may or may not be received. If it receives communication from the main controller 100 with no commands to cancel the boot-up sequence (2012), it starts the boot-up sequence as retained in its memory. Without communications from the main controller, the sub-module starts the boot-up sequence after a predefined timeout, such as about one second, about five seconds, about sixty seconds or the like (2013).

[00145] The power relay sub-module reads the configuration stored in its internal memory (2014), thereby obtaining previously stored boot-up sequence for the sub-module. If the configuration indicates that the power relay is kept at an "Always OFF" state (2015), the sub-module ends the boot-up sequence and waits for further commands 2030, which may or may not be received.

[00146] If the configuration indicates to turn on the power relay immediately

(2016), the sub-module turns on the power relay (2017) which powers the corresponding AC power sockets and waits for further commands 2030, which may or may not be received.

[00147] If the configuration is not to turn on the power relay immediately, the sub-module may turn on the power relay after a predefined delay. The sub-module waits for the delay (2018), monitoring whether the predefined delay has elapsed (2019). Once the delay is reached, the power relay sub-module turns on the power relay (2017) which powers the corresponding AC power sockets. The power relay sub-module may then wait for further commands 2030, which may or may not be received.

[00148] It is to be understood that the power relay sub-module may control one or more power relays and that a power relay may power one or more power outlets, each of which in a different manner, such as defined by the commands or by the boot-up sequence configuration.

[00149] Referring now to Figure 21, showing an embodiment of sub-assembly module 10 comprising a main controller sub-module 100, having a removable main controller portion 2100 and a housing portion 2101. In some exemplary embodiments, the main controller sub-module 100 is only electrically coupled to the rest of the modules by the internal power and communication bus cable 1702. The removable main controller portion 2100 is removably attached to housing portion 2101 by the mean of assembly screws 2102 which are screwed in corresponding assembly holes 2103, having the same dimension on both the removable main controller portion 2100 and the housing portion 2101.

[00150] The removable main controller assembly may be implemented in a manner similar to that described in PCT application PCT/US16/46225, entitled "MODULAR ASSEMBLY HOUSING", filed on August 10, 2016, assigned to the applicant of the present application, which is hereby incorporated by reference in its entirety for all purposes without giving rise to disownment.

[00151] Referring now to figure 22, which describes a diagram of a main controller assembly 2210 in communication with four intelligent power strips 2220, 2230, 2240 and 2250, in accordance with some exemplary embodiments of the disclosed subject matter.

[00152] The main controller assembly 2210 comprises a main controller sub- module 2211 which may include, but not limited, a computer controller, a memory, a network communication interface, a sensor interface, a controller interface, or the like. The main controller assembly 2210 comprises a power and communication interface sub-module 2212 which may include a plurality of extemal connectors. In the present figure the power and communication interface sub-module 2212 includes four connectors as an illustration which is not intended to limit the number of connectors. The main controller sub-module 2211 being in communication with the power and communication interface sub-module 2212 via an internal communication bus 2215.

[00153] The main controller assembly 2210 is in communication control to four intelligent power strips 2220, 2230, 2240 and 2250 via four extemal power and communication bus cables 2216. Extemal power and communication bus cables 2216 may be flexible, non-rigid- cables.

[00154] The intelligent power strips 2220, 2230, 2240 and 2250 comprise a slave power and communication interface sub-module 2217. The slave power and communication interface sub-module 2217 may include one or more extemal connectors, in which the communication bus cables 2216 are plugged. In some exemplary embodiments, the intelligent power strips 2220, 2230, 2240 and 2250 may receive power supply from a source external to the main controller assembly 2210, such as directly from a power outlet (not shown), indirectly from another PDU (not shown), or the like.

[00155] In some embodiments, the slave power and communication interface sub-module 2217 may comprise a secondary microcontroller with internal memory 2219, which purpose may be, but is not limited, to contain information about the intelligent power strip such as product code, serial number, manufacturing identifier, communication identifier, or the like. In some exemplary embodiments, the secondary microcontroller with internal memory 2219 may be utilized to collect data from other sub-modules, to control other sub-modules, or the like.

[00156] The intelligent power strip 2220 may comprise a one switched outlet sub-module 2251 and a two switched outlet sub-module 2252 and a one outlet sub- module 261. The switched outlet sub-modules 2252 may be in communication with the power and communication interface sub-module 2217 via an internal communication bus 2218. The one switched outlet sub-module 2251 comprises a secondary microcontroller with internal memory 2219. The secondary microcontroller with internal memory 2219 may be in control of a power controlled relay 2255 that is configured to provide power to its corresponding outlet. The two switched outlets sub-module 2252 comprises a secondary microcontroller with internal memory 2219 which is in control of two power controlled relay 2255 that provide power to their corresponding outlets.

[00157] The sub-modules 2217, 2251 and 2252 of the intelligent power strip

2220 are in communication control with the main controller assembly via the communication bus cable 2216. The main controller sub-module 2211 may change the status of the power controlled relays 2255 by sending commands to the microcontrollers 2219 of the sub-modules 2251 or 2252 via bus cable 2216. The microcontrollers 2219 may be configured to execute the received commands. The main controller 2211 may send boot-up configuration parameters to the microcontrollers 2219 of the sub-module 2251 and 2252 which would be stored in their internal memory. The boot-up configuration parameters stored in the internal memory may be used after a power-up situation even if there is no communication received from the main controller 2211. Such a scenario may be caused if main controller 2211 becomes non-operational. Additionally or alternatively, bus 2216 may be disconnected and no connectivity to main controller 2211 may be available.

[00158] The intelligent power strip 2230 comprises a one switched outlet sub- module 2251 and a three switched outlets sub-module 2253 and another one switched outlet sub-module 2251, all in communication with the power and communication interface sub-module 2217 via an internal communication bus 2218. The three switched outlets sub-module 2253 comprises a secondary microcontroller with internal memory 2219 which is in control of three power controlled relays 2255 that provide power to their corresponding outlet.

[00159] The intelligent power strip 2240 comprises two four switched outlets sub-module 2254, both in communication with the power and communication interface sub-module 2217 via an internal communication bus 2218. The four switched outlets sub-module 2254 comprises a secondary microcontroller with internal memory 2219 which is in control of four power controlled relays 2255 that provide power to their corresponding outlet.

[00160] The intelligent power strip 2250 comprises a power meter sub- module 2270 in communication with the power and communication interface sub- module 2217 via an internal communication bus 2218, and a four outlet sub-module 2264. The power meter sub-module 2270 comprises a secondary microcontroller with internal memory 2219 which collects power information from the power feeded to the four outlets of the four outlet sub-module 2264 such as, but not limited to, voltage, current, active power, energy or the like.

[00161] Referring now to figure 23, which describes a diagram of a power distribution main controller assembly 2310 in communication with two intelligent power strips 2230 and 2250, in accordance with some exemplary embodiments of the disclosed subject matter.

[00162] The power distribution main controller assembly 2310 comprises a main controller sub-module 2211 and a power and communication interface sub- module 2212. The main controller sub-module 2211 may include, for example, a computer controller, a memory, a network communication interface, a sensor interface, a controller interface. The power and communication interface sub-module 2212 may include a plurality of external connectors. In the present figure the sub- module 2212 includes four connectors as an illustration which is not intended to limit the number of connectors. The power distribution main controller assembly 2310 comprises a one switched outlet sub-module 2251, a two switched outlet sub- module 2252 and a four switched outlet sub-module 2254. The main controller sub- module 2211 being in communication with the power and communication interface sub-module 2212 and switched outlet sub-modules 2251, 2252 and 2254 via an internal communication bus 2215.

[00163] The power distribution main controller assembly 2310 is also in communication with two intelligent power strips 2230 and 2250 via two external power and communication bus cables 2216. The power distribution main controller assembly 2310 may control the two intelligent power strips 2230 and 2250 by sending commands thereto.

[00164] The sub-modules 2251, 2252 and 2254 comprised in the power distribution main controller assembly 2310, may function in the same way as the same sub-modules when comprised in the intelligent power strips 2220, 2230, 2240 or 2250, such as described in figure 22.

[00165] In some exemplary embodiments, the sub-modules 2251, 2252 and

2254 comprised in the power distribution main controller assembly 2310 may be in communication with the main controller sub-module 2211 via another internal communication bus that is different from the communication bus between the power and communication interface sub-module 2212 and the main controller sub-module 221 1.

[00166] In some exemplary embodiments, modules, such as intelligent strips

2220, 2230, 2240 of Figure 22, may be connected serially to one another. In such a deployment, a communication from main controller assembly, e.g., 2210 of Figure 22 or 2310 of Figure 23, to a module may be routed via one or more additional modules in between the main controller assembly and the module.

[00167] It is to be understood that the embodiments of the invention herein described are merely illustrative of the application of the principles of the invention. Reference herein to details of the illustrated embodiments is not intended to limit the scope of the claims, which themselves recite those features regarded as essential to the invention.

[00168] The disclosed subj ect matter is not limited to specific electrical connector or similar components, as described in the above embodiments. In particular, the type of outlets, connectors and their specific position in a module may be a matter of choice and the disclosed subject matter is not limited to such location, unless specifically stated differently in the claims.

[00169] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

[00170] The corresponding structures, materials, acts, and equivalents of all means or step plus function elements in the claims below are intended to include any structure, material, or act for performing the function in combination with other claimed elements as specifically claimed. The description of the present invention has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the invention. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.