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|  MIL-N-81857(AS)
Quantity to be Selected
Q u a l i t y of Equipments
for Life Test
O f f e r e d for Acceptance
1
First 25
1
Next 175
1
Next. 300
1 for each additional 500
o r fraction thereof.
4.5.1
T e s t C o n d i t i o n s - The life test shall be conducted
under the following simulated service conditions.
Temperature
Normal Room
Altitude
Normal ground (0 - 5000 ft.)
Humidity
Room
ambient
115 5 volts (at lowest
A. C. Voltage
a p p l i c a b l e frecluency)
2'7.0 2.0 volts
D. C. Voltage
4.5.2 T e s t P e r i o d s - The test may be run continuously
or intermittently. Any period of operation shall be of sufficient
d u r a t i o n to permit the equipment temperature to stabilize. Periodi-
c a l l y , the equipment shall be turned on and off several times and
p u t through its various phases of operation.
P e r f o r m a n c e Check -- A t approximately 8-hour
4.5.3
intervals during the test, a limited performance check shall be made.
T h e performance check proposed by the contractor shall be subject
to approval by the procuring activity.
Test Data - The contractor shall keep a daily record
4.5.4
of the performance of the equipment, making particular note of any
d e f i c i e n c i c s or failures. In the event of part failures, the defective
part shall be replaced and the operation resumed for the balance of
the test period. A record shall be kept of all failures throughout the
t e s t . This record shall indicate the following:
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