The Basler AVC63-12 AVR and AVC125-10 AVR regulate the level of excitation supplied to the field of a conventional, brushless, synchronous generator. Regulation is achieved by sensing the generator output voltage, converting it to a dc signal, and comparing the signal to a reference voltage. An error signal is developed and used to control the dc field power in order to maintain a constant generator output. Each regulator includes frequency compensation with selectable slope, inverse-time overexcitation shutdown, buildup circuitry, single- or three-phase voltage sensing, single-or three-phase shunt or permanent magnet generator (PMG) power input, parallel droop compensation, and an accessory input. The accessory input provides compatibility with devices such as var/power factor controllers or excitation limiters.
Power Input
Configuration: 1-phase or 3-phase
Frequency: 50 to 400 Hz
Voltage Range
AVC63-12: 90 TO 153 Vac
AVC125-10: 180 to 264 Vac
Maximum Continuous Burden
AVC63-12: 1,092 VA
AVC125-10: 1,750 VA
∗ See Options for Inrush Current Reduction
Module information.
Sensing Input
Configuration: 1-phase or 3-phase
Burden: <1 VA per phase
Voltage Range
Option A: 90 to 139 Vac
Option B: 180 to 264 Vac
Nominal Frequency
Option 1: 50 or 60 Hz
Option 2: 400 Hz
(See Table 2 for style/option information.)
Accessory Input
Voltage Range: ±3 Vdc
Power Output
Maximum Continuous Output
AVC63-12: 12 Adc at 63 Vdc
AVC125-10: 10 Adc at 125 Vdc
10 Second Forcing Output
AVC63-12: 24 Adc at 125 Vdc
AVC125-10: 20 Adc at 250 Vdc
Minimum Field Resistance
AVC63-12: 5.25 Ω
AVC125-10: 12.5 Ω
Regulation Accuracy
±0.5% of voltage setpoint, average response
Voltage Drift
±0.5% variation for a 40°C (104°F) change
Response Time
<4 ms