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|  MIL-S-19557/10A(AS)
REQUIREMENTS (cont'd)
Applicable paragraphs
of MIL-S-19557C(AS)
(3) Operate at Overrunning mode as per para. 4.5.9
for a minimum of 15 minutes except that attitude and
temperatures can be fixed at the prevailing test
conditions.
(4) Proof Spin Test - Prior to conducting any
operational starter tests the following shall be
accomplished on all high speed components:
Proof spin each turbine wheel for 10 sec. at the
equivalent room temperature proof speed. The proof
speed shall be above the maximum operating speed but
below the minimum yield speed.
(5) Insulation Resistance - The insulation resistance
test shall be performed in accordance with
MIL-STD-202 Method 302 test condition B. The
500-volt potential shall be applied for a minimum of
2 minutes between all mutually insulated circuits and
between all circuits tied together and the unit case
or chassis. To preclude possible damage to the
equipment, the insulation resistance test should
always be performed prior to performing the
dielectric test.
(6) Dielectric Test - The dielectric test shall be
performed in accordance with MIL-STD-202 Method 301
at the test potential of 1050 volts. The test
potential shall be maintained for 60 seconds minimum
for each test point. The appropriate test potential
shall be applied between all mutually insulated
circuits.
(7) Proof Pressure - A proof pressure test shall be
conducted to verify the requirements of 3.8.3.2.
Pressure shall be maintained for 2 minutes. There
shall be no evidence of damage, distortion, nor
external leakage, and the unit shall subsequently
meet the requirements of the calibration test.
Instrumentation
4.5.3
Add the following instrumentation parameters:
Lubricant Pressure
*J.
*K.
Lubricant Flow Centershaft and Oil Ferrule
*L.
Self Induced Vibration
*M.
Voltage Speed Sensor
*N.
Frequency Speed Sensor
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