RDT Transfer Switch Spec Sheet

ManualsBrandsKohler ManualsAutomaticRDT Series 200-Amp Indoor Automatic Transfer Switch w/ 24-Circuit Load Center

G11-139 (Model RDT Automatic Transfer Switch) 3/20f Page 1

MPACr 500 Controller Features

D User-friendly interface with easy-to-read international

symbols

D Source available and contactor position indicators

D LED indication of system faults

d Failure to acquire standby source

d Failure to transfer

d Auxiliary switch fault

D Common fault contact: latches closed on system faults

shown above

D Engine start contact: provides contact closure to start the

generator set

D Load control contact: allows 5-minute delay in startup of

selected loads

D Test button (with or without load)

D Exercise set button

d Weekly 20-minute generator set exercise

d With or without load

D Single-phase voltage sensing on both sources, ±5%

D Line-to-line frequency sensing, ±2%

D Fixedtimedelays

Automatic Transfer Switch

100- 400 Amps

Model: RDT

Standard Features

D UL listed

d UL 1008 listed, file # E58962

d Models with load centers use UL 67 listed components

D cUL listed

d 100 and 200 amp models with load centers

D CSA certification available, file #LR58301 (not applicable to

service entrance or load center models)

D 220/240 VAC, 50/60 Hz (selectable)

D 100, 200, and 400 amp models available

D Two-pole, single-phase open-transition transfer switch

D Contactor electrically and mechanically interlocked

D Double throw inherently interlocked design

D Solid neutral

D Contactor manually operable for maintenance purposes

D Silver alloy main contacts

D All models are 100% equipment rated and can be applied at

the rated current without derating

D 100 and 200 amp models available with or without prewired

Square D type QO load center

d 100 amp load center models use up to 16 circuit breakers

(upto8tandembreakerscanbeusedforamaximumof

24 circuits)

d 200 amp load center models use up to 24 circuit breakers

d 200 amp service entrance model with 42-circuit breaker

load center is available

D Two enclosures available

d NEMA Type 1 steel ANSI 49 gray enclosure for indoor

installation. 100 amp and 200 amp models without load

centers can be recess-mounted between wall studs

(not service entrance model)

d NEMA Type 3R corrosion-resistant aluminum ANSI 49

gray padlockable enclosure. Approved for indoor or

outdoor installation

D Five-year limited warranty

D See page 5 for available accessories

Service Entrance Model Features

D 200 and 400 amp service entrance rated automatic transfer

switches available

D Service disconnect circuit breaker on the normal (utility)

source (80% rated)

D NEMA 3R aluminum ANSI 49 gray enclosure

D Circuit breaker for generator set battery charger

D See page 5 for available SE model accessories

Summary of content (6 pages)

PAGE 1
Model: RDT Automatic Transfer Switch 100- 400 Amps Standard Features D UL listed d UL 1008 listed, file # E58962 d Models with load centers use UL 67 listed components D cUL listed d 100 and 200 amp models with load centers D CSA certification available, file # LR58301 (not applicable to service entrance or load center models) D 220/240 VAC, 50/60 Hz (selectable) D 100, 200, and 400 amp models available D Two-pole, single-phase open-transition transfer switch D Contactor electrically and mechanically int
PAGE 2
Environmental Specifications Operating temperature: − Storage temperature: − Humidity: Time Delays Factory Setting Range Increment Engine start 3 seconds 1- 10 seconds 1 second Transfer from Normal to Emergency 3 seconds 1- 10 seconds 1 second Retransfer from Emergency to Normal 6 minutes 3- 30 minutes 3 minutes Engine cooldown 5 minutes 1- 10 minutes 1 minute 0.
PAGE 3
Contactor Ratings with Coordinated Circuit Breakers The transfer switches are UL listed at 240 VAC maximum. The following table lists contactor withstand current ratings (WCR) for 100- 400 ampere non-service entrance rated switches with specific manufacturer’s circuit breakers per UL and Canadian safety standards.
PAGE 4
Codes and Standards The ATS meets or exceeds the requirements of the following specifications: D Underwriters Laboratories UL 1008, Standard for Automatic Transfer Switches for Use in Emergency Systems, file # E58962 D Underwriters Laboratories UL 508, Standard for Industrial Control Equipment D CSA certified, file # LR58301 (not applicable to service entrance models) D NFPA 70, National Electrical Code D NFPA 110, Emergency and Standby Power Systems D IEEE Standard 446, IEEE Recommended Practice for Emerge
PAGE 5
Accessories - Auxiliary position-indicating contacts - Power relay modules D One closed on normal position and one closed on emergency position D Form C contacts rated 15 A @ 250 VAC - Accessory board D Alarm horn indicates system faults D Adjustable time delays: d d d d d 50 amp power relay mounted in a NEMA Type 3R enclosure Use up to four modules with the load shed kit UL/cUL listed Dimensions: 172 x 233 x 92 mm (6.8 x 9.2 x 3.6 in.
PAGE 6
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 Model Mechanism Transition Kohlerr Controls Voltage Poles Enclosure Current Rating Model Designation Key This chart explains the Kohlerr transfer switch model designation system.