TM 5-3895-374-24-1TEST PROCEDURESField Tests & Monitor ComponentsThe GC-100 Ground Fault Relay and Sensor may be tested with or without tripping as desired. Each Sensor is providedwith a test winding of 800 turns (terminals X5, X6) and should be connected as shown in Figure 2.The Monitor Components shown in Figure 2 and listed below provide both test with tripping and test without trippingfunctions. A nameplate is provided with each Ground Fault Relay giving operation instructions for this connection.Standard Monitor ComponentsTest ButtonClass 9001Type K1L-38G-H2Reset ButtonClass 9001Type K1L-38R-H1Test RelayClass 8501Type RS14, 120 Vac (or Type KP12, 120 Vac)Relay SocketClass 8501Type NR44 (or Type NR1)To test without tripping, press the Test button only (See Figure 1). This simulates a ground fault in the Sensor,disconnects the 120 volt power source from the Output Relay K and applies 120 volts to the Control Triac Circuit via L1After the relay times out the Control Triac Circuit turns on Lamp L1: Some lamp flicker is normal.To test with tripping, press the Test and Reset buttons simultaneously (See Figure 1). This establishes the normal powersupply connections and energizes the test winding. Both L1 and L2 will light after the time delay interval and theDisconnect Trip Coil will pick up. Under both test conditions releasing the test button automatically resets the GroundFault Relay.When only the test with tripping function is required, the Monitor Components may be as listed below. Figure 7 showsconnections for these components. No nameplate is supplied for this arrangement.FIGURE 7Test With Tripping Monitor ComponentsTest ButtonClass 9001Type KR-2B-H5Reset ButtonClass 9001Type K1L-38R-H6A test operation should be performed at least once a year and once immediately after each time the circuit is interrupteddue to a fault of any kind.HIGH POTENTIAL TESTSDo not apply voltage from a megger, hi-pot tester or continuity tester to the solid state time delay ground fault relay circuits.If a high voltage test is required for the control wiring, remove wires from terminals 11, 12 and 13, then jumper all terminalstogether before applying voltage. Do not apply voltage higher than 1,240 Vac RMS/60 Hz. to relay terminals at any time.(page 3-97)
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