Khenkikian Electronics

SX440

SX440 Zoom
  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%

  1. WIRING                                                             3.  ADJUSTMENT
  1. K1, K2 : Field input external switch terminals. Linked for normal operation.
  1. P2, P3 : External power input terminals.
  1. 3, 2 : Sensing input terminals.
  1. 1, 2 : External VR terminals. Linked for useless.
  1. X,XX : X connect to field (+), XX connect to field (-).
  1. S1, S2 : Droop CT input terminal.
  1. A1, A2 : VAR/PF controller input.
  1. A, B, C : Link A, C for under 90KW.

Link B, C for 90 ~ 550KW.

Link A, B for over 550KW.

  1. J1~J8 : Jump select terminals, 2-3,4-5,6-7. please refer to Figure 2 and Figure 3.

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 (1KW) if fitted.

  1. The terminals 1&2 must be linked if no hand trimmer.
  1. Before start the generator, please turn the Volt trimmer on the AVR board fully anticlockwise Turn the external trimmer to midway position.
  1. Turn the stability trimmer on the AVR board to midway position.
  1. Connect a voltmeter to generator output voltage terminals.
  1. Start generator set and run on no load at nominal frequency 50 ~ 53Hz or 60~63Hz.
  1. If the red Led is illuminated, refer to the under frequency roll off adjustment.

Carefully turn volt trimmer clockwise until rated voltage is reached.

« Back