Description
The SR4A 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 generator field of machines within the regulator’s power rating.
-The regulators consist of silicon controlled rectifiers (SCR’s) transistors, transformers, silicon diodes, resistors and capacitors. The voltage regulators contain no electrolytic capacitors and are relatively unaffected by temperature, humidity, vibration and shock.
Input Power:
SR4A: 95 – 139 Vac (±10), 50/60 Hz, 840 VA.
Output Power: 63 Vdc @ 7A Maximum Continuous, 90 Vdc @ 10 A One Minute Forcing.
Input Sensing: NEMA Standard 60 Hz: 100 – 110/190 – 200 – 208/220 – 230 – 240/380 400 – 415/500 Vac; ±10%.
Input Sensing Burden: 10 VA.
Parallel Compensation: 5 A Input; 25 VA Burden. Droop adjust to 6%.
Minimum Field Resistance: 9 Ω
Voltage Regulation: <±1/2% (Average voltage).
MADE IN USA
Manufactured By: Basler Electric® Highland, Illinois
