I-Gard GCHK-100, Instruction Manual

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I-GARD GCHK-100 Instruction Manual
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To test the GCHK-100 relay and remote indication, the RESET/TEST button is pressed twice quickly
in succession.
The relay will Trip and all red LED indicators will light on the Main Relay and Remote Indicator and hold
until RESET (by a single push of the RESET/TEST button). All relays will operate.
If annual inspection calls for more elaborate testing, this can be performed by primary injection of test current
through the window of the ZSCS and verifying that the pickup settings are within tolerance.
Testing should be done with a source of current, which is sinusoidal, has accurate metering and has a frequency
of 60 Hz.
Time delays may be measured with a digital storage oscilloscope. This can be done many ways but one way is
to apply a test “fault” resistor to the system with the oscilloscope connected to a current transformer arranged to
measure “fault” current. The Delay time will be the time that the current flows through the test “fault”. Note that
the resistor must be rated for continuous current at the rated voltage.
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Service
For assistance in installation, set-up or testing please call I-Gard toll free at the following number.
1-888-737-4787 (1-888-ReSiSTR)
There are no recommended, user-serviceable parts in the GCHK-100 other than replacement of the Pilot Wire
fuse. This fuse is a 600V rated 0.5A FNQ-½ by Bussman.
All other service should be referred to qualified factory representatives, other than direct replacement of entire
modules to I-Gard. Please visit the I-Gard website for information regarding field service representatives in your
area.
Note: Please ensure that proper authorisation is obtained from I-Gard before returning any material.