TT-1646 6/15
INSTALLATION INSTRUCTIONS
Original Issue Date:
6/15
Model:
RDT and RXT ATS with Load Management
Market:
Residential/Commercial ATS
Subject:
Power Relay Module Kit GM92001-KP1-QS
Introduction
The power relay module kit contains one 50 amp relay
with connecting lugs in a NEMA type 3R enclosure. Use
up to four power relay module kits with the following load
management devices:
D
RDT automatic transfer switch with load shed kit
GM88281-KA1 or GM88281-KP1-QS
D
RXT automatic transfer switch with load shed kit
GM88281-KA1 or GM88281-KP1-QS
D
RXT automatic transfer switch with combined
interface/load management board
Note:
A load shed kit or RXT combined interface/load
management board is
required
for load
management. See TT-1609 for the load shed kit
or TP-6807, RXT Operation and Installation
Manual, for load management operation
information.
The power relay modules can be mounted indoors or
outdoors. Mount the modules on a sturdy vertical
surface with the drain holes at the bottom of the module.
Two (2) 120 VAC loads (shed simultaneously) or a
single 240 VAC load can be wired to each relay.
An adequate electrical supply is required for operation
of the power relay module. The 120 VAC relays require
a customer-supplied voltage source.
Check the
electrical requirements of the customer-provided
equipment prior to installation to determine the wire size
and circuit protection required.
Verify that
customer-provided equipment complies with applicable
local and national electrical codes.
Read the entire installation procedure and compare the
kit parts with the parts list at the end of this publication
before beginning installation. Perform the steps in the
order shown.
See Figure 1 for an illustration of the power relay
module.
Equipment Required
D
Two to four #8 screws to mount each module
D
Drill with 7/8 inch and/or 1 3/8 inch bits or hole saws
D
Level
D
Power cable for relay source and load connections
(see Specifications below)
D
Control cable for relay coil connection (see
Specifications below)
D
Conduit
d
If the modules are mounted outside, use outdoor-
rated conduit hubs .
d
If metal conduit is used, use conduit hubs with
screw terminals for the ground connection.
Figure 1
Power Relay Module
Specifications
Relay Rating
50 A @ 240 VAC
Operating Temperature
--20 to 55
_
C
(--4 to 131
_
F)
Storage Temperature
--40 to 85
_
C
(--40 to 185
_
F)
Relay Type
DPST -- NC
Coil Voltage
120 VAC
Control Relay Output
Connection (to relay coil)
#6--32 screw
12--18 AWG cable
(ring terminals included)
Connecting Lug Wire Size
(qty. 4, relay source and load
connections)
#4--14 AWG
(Copper only)
Figure 2
Specifications
