Dc voltmeter circuit selector
Unexcited bus test indicator
Dc ammeter terminal selector
External voltmeter terminals
Unexcited bus test switch
Dc generator load switches
Load disconnect switch
T3 variable control
Equalizer coil test switch
Inverter load switches
Auxiliary power pack switch
Ac voltage regulator terminal
Ac generator load switches
Rheostat test switch
Rheostat regulator switch
Inverter input terminals
A and D field terminal
A+, F, and A-terminals
Circuit selector switch
Battery generator terminals
Dc generator input terminals,
B+28V, 500A 28V,
Phase sequence indicator
250A 28V, 50A 28V
T2 variable control
T1, T2, T3 terminals
T1 variable control
Section II. CONTROLS, INSTRUMENTS, TERMINALS, AND LOAD LINKS
are used for applying fixed or varying loads, for one-
and three-phase inputs. For fixed loads, use the 3 kw
This section describes, locates, illustrates, and
load switches as required. For varying loads from 0 to 1
furnishes the operator with sufficient information
kw, close switches T1, T2, and T3 and operate T1, T2,
pertaining to the various controls, instruments,
and T3 variable controls.
terminals, and, load links provided for proper operation
19. INVERTER SWITCH.
of the equipment.
The inverter switch (50, figure 6) is used to turn
15. LOAD LINKS AND LOAD-DISCONNECT LINKS.
inverter under test ON or OFF.
The load links (31, figure 6) are used to set up
20. INVERTER INPUT TERMINALS.
load resistances as determined by equipment under test.
Load-disconnect links (29) set up the load-disconnect
provide dc power input to operate the inverter under
16. AC VOLTAGE REGULATOR TERMINALS.
The ac voltage regulator terminals (48, figure 6)
The positive (+) and negative (-) battery
provide input connections for testing ac voltage
generator terminals (34, figure 6) provide input
regulators with internal leads.
connections for an external battery or generator source,
17. INVERTER LOAD SWITCHES.
when testing reverse-current cutout relays.
22. BATTERY SWITCH.
are used for testing the ac output of inverters by varying
The battery switch (33, figure 6) is an ON-OFF
T1, T2, and T3 controls, loading each phase separately
switch used to control external power source of the
from 0 to 1 kw.
battery generator terminals (34).
18. AC GENERATOR LOAD SWITCHES.
The ac generator load switches (49, figure 6)