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|  MIL-P-45969B (AR)
4.4.7
DC battery buss test.
a.
Disconnect power supply from AC source and install a
charged DC battery as specified in 3.5.4 and 4.6.1.4.
This battery shall be one used for test purposes only and
not one of those to be supplied with each production
unit.
(See 3.5.4). With power supply DC output cables
attached to J104 and J105 on the distribution box, attach
a variable load, set for maximum resistance, and a test
ammeter across pins B to E of J101. Place selector
switch (SW1) in the Battery Buss position and verify that
battery voltage is indicated on voltmeter (V).
b.
With selector switch (SW3) in the 150 amp position and
SW2 depressed, set load for 60 amps and 90 amps and
verify that ammeter (A) is within 2 percent of full scale
as compared with a test ammeter.
c.
With selector switch (SW3) in the 500 amp position and
SW2 depressed, set load for SO amps and 100 amps and
verify that ammeter (A) is within 2 percent of full scale
as compared to a test ammeter.
d.
Upon completion of testing, remove battery from power
supply.
4.4.8
Battery charge voltage test.
a.
Connect power supply AC power cable to 220 VAC 3 phase 50
to 60 Hertz supply. Connect power supply connector P104
to the distribution box. Connect a test ammeter,
external load, and 5,000 MFD Capacitor between pins B and
E of connector J101 as shown In Figure 2. Place the
voltmeter selector switch on the distribution box to the
Battery Buss Position.
b.
Energize the power supply with the control panel selector
switch in the battery charge position and the DC voltage
adjust in the maximum clockwise position. Increase the
load. The current limit shall occur between 7 to 13
amps. Verify that the power supply ammeter is within 2
percent of full scale as compared with a test ammeter.
4.4.10 Tie down test. The tie down connections on the portable
hydraulic power supply shall be subjected to the loads specified in
3.14.1. There shall be no evidence of weld failure or permanent
deformation of the connections. Scientific computations and analysis
may be submitted in lieu of actual test to verify compliance with
specified requirements. Such analytical proof may, at the option of
the Government, be subject to verification by actual test.
4.4.11 Electromagnetic interference test. The hydraulic power
supply shall be tested in accordance with MIL-STD-461 for IIB
equipment, Table II, to verify compliance to 3.8.
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