AVR SX440 - Specifications; Sensing Input; Output Specifications; Voltage Regulation

1. SPECIFICATION
Sensing Input
Voltage 190 ~ 264 VAC, 1 phase 2 wire
Frequency 50 / 60 Hz, selectable
Output
Voltage Max. 90 VDC @ 207 VAC
Current Continuous 4A
Intermittent 10A for 10 sec.
Resistance Min. 15 ohm
Voltage Regulation
< ± 1% ( with 4% engine governing )
Voltage Build-up
Residual voltage at AVR terminal > 5 VAC
Thermal Drift
0.05% per
°
C change in AVR ambient
External Volts Adjustment
±8% with 1K ohm 1 watt trimmer
Unit Power Dissipation
Max. 12 watt
Under Frequency Protection (Factory Setting)
Set point 95% Hz
Slope 170% down to 30 Hz
Soft Start Ramp Time
2 sec.
Analogue Input
Sensitivity 1V for 5% generator volts
Input Resistance 1K ohm
Max. Input ± 5 VDC
Quadrature Droop Input
Burden 10 ohm
Max sensitivity 0.07 A for 5% droop (PF=0)
Max. input 0.33 A
Dimensions
150mm L * 135mm W * 40mm H
Weight
418g ± 2%
2. WIRING
1. K1, K2 : Field input external switch terminals.
Linked for normal operation.
2. P2, P3 : External power input terminals.
3. 3, 2 : Sensing input terminals.
4. 1, 2 : External VR terminals. Linked for useless.
5. X,XX : X connect to field (+), XX connect to field (-).
6. S1, S2 : Droop CT input terminal.
7. A1, A2 : VAR/PF controller input.
8. A, B, C : Link A, C for under 90KW.
Link B, C for 90 ~ 550KW.
Link A, B for over 550KW.
9. J1~J8 : Jump select terminals, 2-3,4-5,6-7. please
refer to Figure 2 and Figure 3.
3. ADJUSTMENT
3.1 Voltage Adjustment
The generator output voltage can be altered by
adjustment of the volt VR on the AVR board, or by
the external trimmer (1KΩ) if fitted.
1. The terminals 1&2 must be linked if no hand
trimmer.
2. Before start the generator, please turn the Volt
trimmer on the AVR board fully anticlockwise
Turn the external trimmer to midway position.
3. Turn the stability trimmer on the AVR board to
midway position.
4. Connect a voltmeter to generator output voltage
terminals.
5. Start generator set and run on no load at nominal
frequency 50 ~ 53Hz or 60~63Hz.
6. If the red Led is illuminated, refer to the under
frequency roll off adjustment.
7. Carefully turn volt trimmer clockwise until rated
voltage is reached.
______________________________________________________________________________________
2
SX440
All manuals and user guides at all-guides.com