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EA440
3
SECTION 2 : WIRING
2.1
K1, K2 : Field input external switch terminals.
Linked for normal operation.
2.2
P2, P3 : External power input terminals.
2.3
3, 2 : Sensing input terminals.
2.4
1, 2 : External VR terminals. Linked for useless.
2.5
X,XX : X connect to field (+), XX connect to field
(-).
2.6
S1, S2 : Droop CT input terminal.
2.7
A1, A2 : VAR/PF controller input.
2.8
A, B, C : Link A, C for under 90 KW.
Link B, C for 90
550 KW.
Link A, B for over 550 KW.
2.9
J1
J8 : Jump select terminals, 2-3, 4-5, 6-7.
please refer to Figure 2 and Figure 3.
SECTION 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 (1K ohm) 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
53 Hz or 60
63 Hz.
(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.
3.2
Stability Adjustment
If a replacement AVR has been fitted or re-setting of
the stability control is required, turn the stability trimmer
slowly clockwise until the output voltage is steady, on
or off load.
3.3
Droop Adjustment
Generator intended for parallel are fitted with a
quadrature droop CT with provides a power factor
dependent signal for the AVR. The CT is connected to
S1, S2 on the AVR. The Droop adjustment is normally
present in the works to give 5% voltage droop at full
load zero power factor. Clockwise increases the
amount of CT signal injected into the AVR and
increases the droop with lagging power factor. With the
control fully anticlockwise there is no droop.
Figure 2
Bypass Drawing
Figure 3
Wiring Drawing
