SS 440
AUTOMATIC VOLTAGE REGULATOR (AVR) FOR STAMFORD BRUSHLESS ALTERNATORS
Features.
- Regulation precision superior to +/- 1.5%.
- Slow start ramp-up
- Protection against low frequency
- LED indicator for low frequency
- Two-phase power supply: 170-250 V. 50/60Hz
- Sensing: 170-450 V. 50/60Hz
- Nominal output voltage: 63 VDC
- Five adjustment trimmers
- Valid for parallel working
Technical Specifications.
- Sensing: 190-264 VAC, 2 phases, two wires to central (intermediate) terminals from 2 generator solenoids.
- Frequency: 50/60 Hz, selectable.
- Output Voltage: maximum 90 VDC when input equals 207VAC
- Output Current: Permanent 4A. Peaks at 6A. 10 sec.
- Protection against over excitation.
- Minimum inductive field resistance: 15 Ohm.
- Regulation precision: Superior to +/- 1.5% for speed variations less than 4%.
- Residual feeding voltage at regulator terminals: >5 Vca.
- Adjustment by means of outer trimmer: +/-7%.
- Value of outer trimmer: 1 kOhm, 1 Watt.
- AVR Dissipation: max. 12 Watt.
- Protection against low frequency: 95% Hertz.
- Voltage drop threshold :170% to 30 Hz.
- Protection against over excitation: 75 Vcc, delayed 10sec.
- Maximum analog input: +/- 5 Vcc.
- Maximum input for parallel working: 0,33A for 10Ohm.
- Adjustment trimmers: Voltage; Stability; Underfrequency rolloff
- Working temperature: -25 to 65ºC
- Weight: 260g
