Generac Power Systems R-200A technical manual Engineered Transfer Switch 2-WIRE Start GTS Mode

General Information

R-panel Technical Manual

Figure 4 - Connection Diagram (ATS Mode)

		FROM UTILITY
			MAIN LINE
				CIRCUIT
				BREAKER
				OR FUSE
FUSE	N1	N1 N2 (N3)		T1
				T2
	N2
				(T3)
FUSE

RTS-TYPE 194

OR 23

HS-TYPE

TRANSFER

SWITCH

E1 E2 (E3)

TO LOAD

FEEDER CIRCUITS

LOAD

DISTRIBUTION

PANEL

GENERATOR

CHARGER

120 VAC

LINE

NEU

GND

194

23

178

183

N2 N1

E1 E2 (E3)

Be very careful when connecting high-voltage wires labeled N1 and N2 and low-voltage wires labeled 23 and 194 in both the generator wiring panel and the transfer switch wiring panel. The control board will be damaged if these wires are not connected correctly.

In order for the generator battery charger function to work, it is necessary to provide a 120VAC util- ity source connection to the generator wiring panel LINE, NEUTRAL and GND terminals (see Figure 4).

ENGINEERED TRANSFER SWITCH (2-WIRE START GTS MODE)

When required, the generator can be installed with an engineered W-type transfer switch which controls utility voltage sensing, weekly exercising and load transferring.

When Position 2 of the eight-position DIP switch, which is located on the generator circuit board (see Figures 1 and 2), is in the ON position then utility voltage sensing, weekly exercising and load transfer- ring is under the control of the engineered W-type transfer switch (GTS Mode).

Generator control board DIP switch position 2 ON =

2-wire Start GTS Mode:

•The generator control board will NOT monitor the utility.

•The generator control board will NOT perform a weekly exercise. (In GTS mode the green system ready LED will be ON for five (5) seconds and OFF for one (1) second).

•The generator control board will NOT activate the transfer output.

•The generator control board WILL monitor all engine conditions and shut down on all the faults listed in this document.

For the W-type transfer switch to control utility volt- age sensing, weekly exercising and load transferring, suitable wiring must also be connected from the transfer switch 178 and 183, 2-wire start terminals to the corresponding generator 178 and 183 2-wire start terminals. Recommended wire gauge sizes for the 2-wire start wiring depend on the length of the wire (see wiring length chart).

MAXIMUM WIRE LENGTH	RECOMMENDED WIRE SIZE
460 feet (140M)	No. 18 AWG.
461 TO 730 feet (223M)	No 16 AWG.
731 to 1,160 feet (354m)	No 14 AWG.
1,161 to 1,850 feet (565m)	No 12 AWG.

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