WEG GRT7-TH4E, Installation, Operation And Maintenance Manual

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Automatic Voltage Regulator
–
GRT7-TH4E / GRT7-TH4PE l 17
12 IDENTIFICATION OF CONNECTION TERMINALS
E1
: Sensing Voltage (160 up to 300Vac).
E2 : Voltage (320 up to 600Vac).
3 : Power supply.
E3/4 : Sensing Voltage.
S1 : Connection for pole S1 of the CT.
S2/5A : Connection for pole S2 of the CT, ratio In/5A.
S2/1A : Connection for pole S2 of the CT, ratio In/1A.
6 e 7 : Connection for potentiometer 5k
Ω
/3W.
F+, F- : Connection for alternator field.
J1 : Jumper 50 Hz or 60 Hz.
A+, A- : Analog input voltage ±10 Vdc.
13 DIAGRAM FOR TEST WITHOUT ALTERNATOR
Below is the diagram for regulator connection on the bench where the equipment operation may be verified before
connection to the alternator.
Material required:
- 1 Small screwdriver;
- 1 Incandescent lamp;
- 1 Lamp socket;
- 1 Bipolar breaker (5A recommended);
- 1 Extension cable;
- 1 Power Plug 220 Vac.
NOTE
1. After performance of such steps as per the procedure the equipment must be sent for evaluation by WEG
technical support.
1º . Assemble the circuit according to the diagram in figure 13.1;
2º . With small screwdriver, turn trimpots Vad and U/F counterclockwise until the end of stroke;
3º . Turn on circuit breaker:
4º . Turn slightly the trimpot Vad clockwise (the lamp must shine after certain position of trimpot)
5º . With lamp on, turn slightly the trimpot Vad counterclockwise (after certain position of trimpot, the lamp must turn off);
6º . Turn off the circuit breaker.
Figure 13.1: Test diagram