To provide a power measuring unit preventing a connector on a current sensor from being connected erroneously to a connection port which is different from a desired connection port on a power calculation device.
This power measuring unit consists of: a plurality of current sensors 1 which are provided near to each of a plurality of loads disposed on mutually separated positions, and which detect a current flowing through the loads; the power calculation device 2 which calculates the instantaneous power or the cumulative power amount for each load, on the basis of the current detected by the current sensors 1; transmission lines 3 which connect each of the current sensors 1 to the power calculation device 2, and transmit and receive signals; and connectors 30 which are provided on one end on the power calculation device 2 side of the transmission lines 3, and which are electrically connected to any of a plurality of connection ports 20a provided in the power calculation device 2. Light emitting units 10a are provided on one face of the bodies 10 of the current sensors 1, which is constituted of a light emitting diode which emits light in response to the pushing of a push button 30a provided on the connectors 30.
KITAMURA TSUNEHIRO
YUASA HIROAKI
NAKAMOTO ATSUSHI
KASAYA MASATO
| JP2006337193A | 2006-12-14 | |||
| JPH08103009A | 1996-04-16 | |||
| JPH1127817A | 1999-01-29 |
Atsuo Mori