A-A-52510B
TABLE I. Technical characteristics.
|
Technical characteristics |
Value |
|
DC resistance |
87.3 ohms ± 1.25 ohms |
|
Insulation resistance |
> 100 megohms at -65F (-54°C) to 77F (25°C) >25 megaohms at 140F (60°C) with 100V DC applied |
|
Dielectric withstanding voltage |
200V rms at 60 Hz for 60 seconds with less than 1mA leakage current |
|
Speed range (normal) |
20.94 to 209.40 milliradians per second |
|
Generator (voltage) sensitivity |
0.194 ± 10% volts per radian per second |
|
Load resistance (output) |
10 000 ohms minimum |
|
Ripple voltage |
± 7% average to peak |
2.3.1 Verification of technical characteristics. The technical characteristics shall be verified in accordance with the following tests. Normal room conditions are defined as a temperature of 77 ± 18 °F (25 ± 10 °C), relative humidity of 20 to 80 percent, and normal atmospheric pressure.
a. DC resistance. The assembled generator shall have direct current resistance of 87.3 ± 1.25 ohms under normal room conditions.
b. Insulation resistance. The assembled generator shall have an insulation resistance of greater than 100 megohms at -65.2°F to 77°F and greater than 25 megohms at 14°F with 100 Vdc applied between the generator terminals and the rotor stack.
c. Dielectric withstanding voltage. The dielectric withstanding voltage of the electrical insulation shall be 200 Vrms, at 60 Hz applied for 60 seconds between the generator terminals and the rotor stack under normal room conditions.
d. Generator sensitivity. Generator sensitivity in either direction in the normal speed range (20.94 milliradian per second to 209.40 milliradian per second) shall be 0.194 ± 0.0194 V per radian per second. The tolerance shall include all effects of nonlinearity. The generator sensitivity, using an output load of 10,000 ohms, shall be calculated from the following formula:
Sensitivity (volt/radian/second) = 
Nonlinearity tests shall be performed under normal room conditions with speeds selected between 6 and 600 milliradians per second. Two tests shall be performed with speeds at least 500 milliradians per second apart.
e. Ripple. The generator percent ripple, using an output load of 10,000 ohms, shall be calculated from the following formula:
Percent ripple = 
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