3-22. BATTERY FIELD AND SHUNT FIELD CONTACTOR (cont)
Connect a variable dc voltage supply to coil (12). Use a multimeter and measure voltage. Check that pickup
voltage is 48 V dc maximum and dropout voltage is 5 to 28 V dc.
Energize and deenergize relay and check that there is no hesitation during pickup or dropout.
Check that battery switch is in open position. Manually operate interlock contacts. Use a multimeter and check
resistance of contacts for infinity while open and continuity while closed.