Install Manual

ManualsBrandsKohler ManualsGenerator Accessory50-Amp Power Relay Module (PRM) For RDT/RXT Automatic Transfer Switches

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 e lectrical 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

(--40to185_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

Summary of content (8 pages)

PAGE 1
TT-1646 6/15 INSTALLATION INSTRUCTIONS Original Issue Date: Model: Market: Subject: 6/15 RDT and RXT ATS with Load Management Residential/Commercial ATS Power Relay Module Kit GM92001-KP1-QS Introduction Equipment Required The power relay module kit contains one 50 amp relay with connecting lugs in a NEMA type 3R enclosure.
PAGE 2
Safety Precautions 1 Installation Procedure Observe the following safety precautions while installing the kit. Note: Load management priorities are determined by the relay connections to the load shed kit or interface/load management board. See TT-1609 for the load shed kit or TP-6807, RXT Operation and Installation Manual, for load priority and load management operation information. WARNING Accidental starting. Can cause severe injury or death.
PAGE 3
1.3 Relay Connections to a Load Shed Kit a. Connect the line side of the relay to the source power circuit as shown in Figure 4. This section applies to models RDT ATS and RXT ATS equipped with load shed kit GM88281-KA1 or GM88281-KP1-QS. For the RXT with combined interface/load management board, go to Section 1.4. b. Connect the load side of the relay to the non-essential load circuits as shown in Figure 4. Two (2) 120 VAC loads (shed simultaneously) or a single 240 VAC load can be wired to each relay.
PAGE 4
1.4 Relay Connections to an RXT Combined Interface/Load Management Board This section applies to the RXT ATS equipped with the combined interface/load management board. For models RDT ATS and RXT ATS equipped with the load shed kit, go to Section 1.3. See Figure 2 for cable specifications. Note: See the RXT Operation and Installation Manual for load priority and load management operation information.
PAGE 5
1.5 Ground the box. 2 Operation Note: The power relay module uses a non-conductive resin enclosure. Bonding between conduit connections is not automatic and must be provided as part of the installation. The power relay module operation is controlled by the load management device, which is either a load shed kit or the RXT combined interface/load management board. The relay is normally closed so that the connected load is powered when the normal source is available. 1.
PAGE 6
Figure 7 6 Power Relay Module Dimensions, ADV-8742, Sheet 1 of 2 TT-1646 6/15
PAGE 7
Figure 8 TT-1646 Power Relay Module Dimensions, ADV-8742, Sheet 2 of 2 6/15 7
PAGE 8
Kohler Power Systems Asia Pacific Headquarters 7 Jurong Pier Road Singapore 619159 Phone (65) 6264-6422, Fax (65) 6264-6455 KOHLER CO., Kohler, Wisconsin 53044 USA Phone 920-457-4441, Fax 920-459-1646 For the nearest sales and service outlet in the US and Canada, phone 1-800-544-2444 KOHLERPower.com 4 Parts Lists Power Relay Module Kit Kit: GM92001-KP1-QS Qty. Description 1 1 1 2 1 1 1 2 2 4 1 1 Decal, Nameplate Enclosure, Base Enclosure, Cover Screw, Thread Forming Gasket (2.56 ft.