Connection Of Power Supply For Contactors; Auxiliary Contacts - Generac RTSR400A3 El Manual Del Propietario

Installation
Factory
wiring
2.6 CONNECTION OF POWER SUPPLY FOR
CONTACTORS
The Overload Prevention Control Board (OPCB) can be powered
from either a 24 VAC or 120 VAC power supply. The 24 VAC
supply is from a class 2 transformer that can be purchased from
the manufacturer. Mounting holes are provided in the enclosure
subplate for mounting of the transformer. The 120 VAC supply
is fused at 5 amps and is factory connected to OPCB terminals
labeled "T1 and "Neutral".
2.6.1 24 VAC SUPPLY
Transformer connection are made as shown in Figure 2.3
• Blue wire - OPCB "LOAD SUPPLY 1" terminal
• Black wire - OPCB "T1" terminal
• White wire - OPCB "NEUTRAL" terminal
• Yellow wire - OPCB "LOAD SUPPLY 2" terminal
2.6.2 120 VAC SUPPLY
Install the following jumpers on the OPCB module (Figure 2.4).
• Wire - Load Supply 1 to T1
• Wire - Load Supply 2 to T2
Load supply voltage on the OPCB terminals

must match the PMM contactor coil voltage, or
the equipment will be damaged.
6
Figure 2.3 — 24 VAC Supply Connections
LOAD
1
0 Ground
SUPPLY
T1
194 +12V
NEUTRAL
23 Transfer
LOAD
2
A/C 1 SUPPLY
1
24V
LOAD 1
2
1A MAX
A/C 2
1
24V
LOAD 2
2
1A MAX
A/C 1 & LOAD 1
1
LOAD 3
A/C 2 & LOAD 2
2
1A MAX
1
LOAD 3
4
LOAD
2
LOAD 4
1A MAX
Blue
Black
White
Yellow
Existing
wiring
Figure 2.4 — 120 VAC Supply Connections

2.7 AUXILIARY CONTACTS

If desired, there are Auxiliary Contacts on the transfer switch to
operate customer accessories, remote advisory lights, or remote
annunciator devices. A suitable power source must be connected
to the COMMON (C) terminal. See Figure 2.5.
Contact operation is shown in the following chart:
Common to Normally Open
Common to Normally Closed
Auxiliary Contacts are rated 10 amps at 125 or 250 volts AC.
DO NOT EXCEED THE RATED VOLTAGE AND CURRENT OF THE
CONTACTS.
Transformer
leads
Field installed
Switch Position
Utility Standby
Open Closed
Closed Open
NOTE: