General Information
The SR6A and SR9A Voltage Regulators precisely control the output voltage of an ac electric generating
system by controlling the amount of current supplied to the exciter (or generator) field. This includes
brushless rotary exciters, brush type rotary exciters, or direct excitation into the field of machines within
the regulator’s power rating.
The voltage regulators contain no electrolytic capacitors and are relatively unaffected by temperature,
humidity, vibration, and shock.
Specifications
Voltage Regulation ......................................................... Less than
±
½% (average voltage)
Response Time .............................................................. Less than 17 milliseconds
Voltage Adjust Range ....................................................
±
10% of nominal voltage
Maximum Power Dissipation .......................................... 60 Watts
Parallel Compensation ................................................... 5 A at 25 VA, Droop Adjustment to 6%
Power Input
*
SR6A .............................................................................. 120 Vac
±
10%, 400 Hz, 840 VA†
SR9A .............................................................................. 240 Vac
±
10%, 400 Hz, 1,680 VA†
*
If correct voltage is not available for power input, a suitable power transformer must be selected. See
the
Installation
chapter.
† The actual input VA is equal to the dc current times input voltage.
Output Rating
Maximum Continuous
SR6A .............................................................................. 63 Vdc, 7 Adc
SR9A .............................................................................. 125 Vdc, 7 Adc
One Minute Forcing
SR6A .............................................................................. 90 Vdc, 10 Adc
SR9A .............................................................................. 180 Vdc, 10 Adc
Input Sensing Voltage
*
(NEMA Standard)
SR6A
100-110/190-200-208/220-230-240/380-400-415/500 Vac
±
10% at 400 Hz
SR9A
120-139/208/240/416/480/600 Vac
±
10% at 400 Hz
*
Sensing voltage may be single- or three-phase.
Field Resistance
SR6A .............................................................................. 9
Ω
minimum
SR9A .............................................................................. 19
Ω
minimum
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CALL US TODAY
1-888-POWER-58
REQUEST A QUOTE
SHOP ONLINE
www.genpowerusa.com