DEVICE AND METHOD OF TESTING ACCURACY OF A CURRENT SENSOR IN A SWITCH CABINET

WIPO Patent Application WO/2017/132943

A1

A device and method for testing accuracies of current sensors in a switch cabinet. The device includes a chassis (160) and a sliding mechanism (170) on the chassis, for allowing the device being attached to the switch cabinet (200) or being detached from the switch cabinet. The chassis supports a power supply (110) operable to, in response to the device being attached to the switch cabinet, connect to a first current sensor (210) of the switch cabinet in series, a reference current sensor (120) connected to the power supply and operable to, in response to the device being attached to the switch cabinet, connect to the first current sensor of the switch cabinet in series, and a calibrator (130) operable to compare a reference current value sensed by the reference current sensor and a first current value sensed by the first current sensor of the switch cabinet. The device and method provides a convenient solution for testing accuracies of current sensors in the switch cabinet, without the need to remove the current sensors out of the switch cabinet, and thus improving the efficiency of testing.

DENG ZHONGHUA (CN)
SU PING (CN)
LIANG YONGLIANG (CN)
JIANG YING (CN)
CEN FEI (CN)
CUI CHUN (CN)

PCT/CN2016/073503

August 10, 2017

February 04, 2016

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ABB SCHWEIZ AG (CH)
DENG ZHONGHUA (CN)
SU PING (CN)
LIANG YONGLIANG (CN)
JIANG YING (CN)
CEN FEI (CN)
CUI CHUN (CN)

H02B11/167

CN101644752A	2010-02-10
CN202076715U	2011-12-14
CN102522708A	2012-06-27
JP2014033590A	2014-02-20

KING & WOOD MALLESONS (CN)

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