Automatic Voltage Regulator - Half-wave Phase-controlled Type, Max 90v Dc Output, Under Frequency Protection , +/- 1% Regulation

SX440 is a half-wave phase-controlled type Automatic Voltage Regulator (AVR) and forms part of the excitation system for a brush-less generator.
1. Input:
Voltage : 190-264V ac
Frequency : 50-60 Hz nominal
Phase : Wire 2
2. Output:
Voltage : max 90V dc at 207V ac input;
Current : continuous 4A dc; Intermittent 6A for 10 secs;
Resistance : 15 ohms minimum
3. Regulation: +/- 1%
4. Thermal drift:
0.04% per deg. change in AVR ambient
5. Typical system response:
AVR response : 20ms
Filed current to 90% : 80 ms
Machine Volts to 97% 300ms
6. External voltage adjustment:
+/-10% with 1 k ohm 1 watt trimmer
7. Under frequency protection:
Set point : 95% Hz
Slope : 170% down to 30 Hz
8. Unit power dissipation:
12 watts maximum
9. Build up voltage:
4 Volts @ AVR terminals;
10. ANALOGUE INPUT:
Maximum input : +/- 5V dc
Sensitivity : 1v for 5% Generator Volts (adjustable)
Input resistance : 1k ohm
11. Quadrature droop input:
10 ohms burden
Max. sensitivity: 0.07 A for 5% droop 0PF
Max. input: 0.33A