Control or Indicator
connect the respective D. C. AMPS meter scale to read a
maximum of amperes indicated by the setting.
VOLT-AMPS switch (11) (4 position switch)
Selects load on A. C. VOLTS meter and A. C. AMPS meter to
measure voltage and current of one-phase output of inverter
under test or three-phase output of inverter under test. To
obtain voltage and current readings of individual circuits of a
three-phase inverter, turn VOLTS-AMPS switch through
A B / A , BC/B, CA/C. To obtain voltage and current
readings of a single-phase inverter, turn VOLTS/AMPS
switch to NA/N position.
LOAD switch (12)
Connects load to inverter under test. When set to 1 PHASE
position, connects appropriate load (determined by position
of LOAD CONTROL) for a single phase output. When set to
3 PHASE position, connects appropriate load for three-phase
output. The OFF position disconnects load from inverter
D. C. AMPS meter (8)
Indicates dc input current to inverter under test. D. C. AMPS
meter scale reads either from 0 to 200 amperes, 0 to 100
amperes, 0 to 20 amperes, or 0 to 10 amperes when D. C.
AMMETER RANGE selector is on either 200, 100, 20, or 10
D. C. VOLTS meter (7)
Indicates dc input voltage to inverter under test. D. C.
VOLTS meter scale reads from 0 to 50 volts.
A. C. VOLTS meter (3)
Indicates ac voltage ouput of inverter under test. A. C.
VOLTS meter scale reads from 0 to 150 volts.
2-5. Cable Set Assemblies
wiring diagram of each cable set assembly. Refer
to the chart below to select the cable set assembly
The eight cable set assemblies are stored in the
required to connect the inverter to be tested to the