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VOLTAGE AC PHASE A Meter Calibration Accuracy		Up
TB-11-5995-207-35-2 Calibration Procedure for Montor Electrical Power MX-8570/APS-94D Manual

(2) Connect ammeter to test jacks Jll and J17 of power
(3) Close 28 VOLT DC CIRCUIT BREAKER of unit under
monitor test fixture with test leads.
test.
(3) Close 115 VOLT AC CIRCUIT BREAKER of unit
(4) Compare voltage levels indicated on volt-meter and
under test.
VOLTAGE DC meter of unit under test. The VOLTAGE
(4) Compare current levels indicated on ammeter and
DC meter should indicate voltage level displayed on
AMPERE AC PHASE B meter of unit under test. The
voltmeter, + 2 percent.
b. Adjustments. No adjustments can be made.
AMPERE AC PHASE B meter should indicate current
level displayed on ammeter, + 2.1 percent.
15. AMPERE DC Meter Calibration Accuracy.
b. Adjustments. No adjustments can be made.
a. Performance Check.
13. AMPERE AC PHASE C Meter Calibration
(1) Trip 28 VOLT DC CIRCUIT BREAKER of unit under
test and disconnect voltmeter from power monitor test
Accuracy. a. Performance Check.
fixture.
(1) Trip 115 VOLT AC CIRCUIT BREAKER of unit under
(2) Connect ammeter to test jacks J9 (plus) and J15 of
test.
power monitor test fixture with test leads. Arrange
(2) Connect ammeter to test jacks J12 and J18 of power
ammeter connections for 10 ampere operation.
monitor test fixture with test leads.
(3) Close 28 VOLT DC CIRCUIT BREAKER of unit under
(3) Close 115 VOLT AC CIRCUIT BREAKER of unit
test.
under test.
(4) Compare current levels indicated on ammeter and
(4) Compare current levels indicated on ammeter and
AMPERE DC meter of unit under test. The AMPERE DC
AMPERE AC PHASE C meter of unit under test. The
meter should indicate current level displayed on
AMPERE AC PHASE C meter should indicate current
ammeter, + 2.1 percent.
level displayed on ammeter, + 2.1 percent.
b. Adjustments. No adjustments can be made.
b. Adjustments. No adjustments can be made.
16. Final Procedure. a. Turn the power switch of the
14. VOLTAGE DC Meter Calibration Accuracy.
unit under test to OFF, and disconnect the equipment.
a. Performance Check.
b. In accordance with TM 38-750, annotate and affix
(1) Trip 115 VOLT AC CIRCUIT BREAKER of unit under
calibration DA Label 80 (U.S. Army Calibration System).
test and disconnect ammeter from power monitor test
When the unit under test cannot be adjusted to within
fixture.
tolerance,  annotate  and  affix  DA  Form  2417
(2) Connect voltmeter to test jacks J9 (plus) and J6 of
(Unserviceable Test Instrument or Standard) (red tag).
power monitor test fixture with test leads.
Adjust voltmeter for 100 volt DC operation.
6

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