SECTION VII
the rated value of the power source being applied.
7-2. ALTERNATING CURRENT VOLTAGE.
a. Apply 115-volts ( 2-volts); 400 cycles (4
a. Apply 115-volts (+ 5-volts), 400 cycles (t20
cycles), 3 phase alternating current to pins "A-B-C" on
cycles); one phase alternating current to pins "A" - "B" of
the four pin receptacle (7).
four pin receptacle (7).
b. Apply leading phase to terminal "A" second
b.
Turn switch no. 1(1) to "Power Check."
phase to terminal "B" and third phase to terminal "C."
c. Turn switch no. 5(5) to "AB."
c. If green indicator lamp (12) lights, phase
d. Deflection of pointer on meter shall be 115-
volts (1/32 inch).
indication is correct.
d. Apply leading phase to terminal "C" and third
e. Apply same voltage across pins "B" - "C" and
phase to terminal "A." Terminal "B" remains unchanged.
"A" - "C" with switch no. 5(5) on "B" - "C" and "A" - "C"
respectively.
e.
Red indicator lamp (6) will light.
Pointer must deflect to 115-volts (1/32 inch).
f.
7-8. If the proper lamp does not light in the preceding
phase rotation test, check the wiring and be sure all
7-3. DIRECT CURRENT VOLTAGE.
connections are as designated in figure 1-2. Should
both lamps burn, replace the capacitor (12, figure 4-2).
a. Apply 30-volts (one volt) direct current to pins
"A" - "D" on four pin receptacle (7).
7-9. GROUND CHECK.
b.
Turn switch no. 1(1) to "Power Check."
a. Apply 115-volts (5-volts), 400 cycles (20
cycles), 3 phase alternating current to pins "A-B-C" on
c.
Turn switch no. 5(5) on "28 V.D.C.'"
the four pin receptacle (7).
Pointer must deflect to 30-volts (1/32 inch).
d.
b. After phase rotation has been determined to be
7-4. MILLIAMMETER ADJUSTMENT. If the pointer
correct, (procedure is described in paragraph 7-7) set
deflection is not within the prescribed tolerances,
switch no. 1(1) to "GND Check."
remove and return the meter to the manufacturer for
recalibration.
c. Connect a lead from banana jack to the
electrical ground.
7-5. FREQUENCY METER.
d. If any other than "A" phase is at ground
7-6.
During tests prescribed In the preceding
potential, the green panel light will operate. (Disregard
paragraphs, observe the deflection of the reeds on the
operation of red panel light during this test.)
frequency meter. It shall indicate within four cycles of
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