3-26. GROUND RELAY (cont)
17. Install ground relay (4) and install two flat washers (3), lockwashers (2), and screws (1).
18. Connect wires to relay assembly and remove tags.
Connect a variable dc voltage supply and multimeter to operator portion of coil and contact assembly (10).
Check that operating coil maximum pickup current is 0.825 amps, minimum pickup current is 0.750 amps, and
drop away current is 0.075 amps.
Connect a variable dc voltage supply to unlatching portion of coil and contact assembly (10). Use a multimeter
and measure voltage. Check that pickup voltage is 48 V dc maximum and dropout voltage is 2 to 18 V dc.