TM 11-6625-680-15
circuits of some inverters. The live circuit
before commencing test.) Additional live-circuit
supplies 28-VDC power to the control terminal of
control is afforded by an overcenter spring-guard
which holds the switch open when the spring-guard
inverters which use 4- or 5- post AN-type terminal
block. The live circuit is protected by a 5-AMP
is in lowered position,
cartridge-type fuse with circuit interruption display-
ed by a red indicator light.
1-18. Protection to all meters, except the DC am-
meter, is afforded by fuses incorporated into the cir-
cuits. The DC ammeter circuit includes a sensitive-
type relay that provides circuit interruption when a
1-17. The live circuit is energized by applying 28-
current overload of 110 to 130 percent of capacity is
VDC power to the tester, installing the cable assem-
encountered. The excessive current activates the
bly connecting the tester to inverter-under-test,
sensitive relay which opens the DC power input to the
tester and drops out an interlock circuit.
raised position. (Wait approximately 60 seconds
1-3