ELECTRICAL TESTER

摘要

An electrical equipment cabinet has a standby battery to supply current when a mains connection is not available. In normal operation the battery is maintained charged by the mains supply. In order to test the condition of the battery, a measuring system is arranged to operation in co-operation with a test of a residual current detection device, which temporarily disconnects the mains supply, thus measuring the condition of the battery, when under load.

主权项

1. Apparatus for installation in an electrical equipment cabinet, comprising:
a connection to a mains electricity supply; a connection to a battery; a residual current detection device for monitoring the mains electricity connection and for disconnecting the mains electricity supply in the event of detection of an imbalance between the current detected in different parts of the mains electricity connection; a test actuator for triggering the residual detection device, such that the mains electricity supply is disconnected from the battery; an RCD monitor for monitoring the operation of the residual current detection device when activated by the test actuator and reporting it to a remote location; a battery condition detector for monitoring the battery connection to determine the condition of a battery connected thereto; and a control system for transmitting, to a remote location, a signal indicative of the battery condition detected by the battery condition detector when the test actuator has triggered the residual current detection device.