RDT series
6Pages

KOHLER. Power Systems Au,oma,io 1SS3K>5SE: — POWER SYSTEMS NATIONALLY REGISTERED MPAC™ 500 Controller Features • User-friendly interface with easy-to-read international • Source available and contactor position indicators • LED indication of system faults o Failure to acquire standby source o Auxiliary switch fault • Common fault contact: latches closed on system faults shown above • Engine start contact: provides contact closure to start the • Load control contact: allows 5-minute delay in startup of selected loads • Test button (with or without load) o Weekly 20-minute generator set exercise o With or without load • Single-phase voltage sensing on both sources, ±5% • Line-to-line frequency sensing, ±2% • Fixed time delays Standard Features o Models with load centers, UL 67 listed, file #E251086 o Models without load centers, UL 1008 listed, file #E58962 • CSA certification available, file #LR58301 (not applicable to service entrance or load center models) • Two-pole, single-phase open-transition transfer switch • Contactor electrically and mechanically interlocked • Double throw inherently interlocked design • Solid neutral • Contactor manually operable for maintenance purposes • Silver alloy main contacts • All models are 100% equipment rated and can be applied at the rated current without derating • 100 and 200 amp models available with or without prewired Square D type QO load center o 100 amp load center models use up to 16 circuit breakers (up to 8 tandem breakers can be used for a maximum of o 200 amp load center models use up to 24 circuit breakers o 200 amp service entrance model with 42-circuit breaker load center is available o 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) o NEMA Type 3R corrosion-resistant aluminum ANSI 49 gray padlockable enclosure. Approved for indoor or outdoor installation • Five-year limited warranty • See page 5 for available accessories Service Entrance Model Features • 200 and 400 amp service entrance rated automatic transfer switches available • Service disconnect circuit breaker on the normal (utility) • NEMA 3R aluminum ANSI 49 gray enclosure • Circuit breaker for generator set battery charger • See page 5 for available SE model accessories G11-98 (Model RDT Automatic Transfer Switch) 6/13m Page 1

Environmental Specifications Time Delays Operating temperature: Adjustment with Accessory Board* Factory Setting Engine start Transfer from Normal to Emergency Retransfer from Emergency to Normal Engine cooldown 0.5 A @ 125 VAC; 2 A @ 30 VDC SPST normally open (NO) Exercise interval 10 A @ 120 VAC SPST normally open (NO) Load control connection delay Failure to acquire Emergency source Undervoltage dropout Underfrequency dropout Storage temperature: Humidity: Time Delay Contact Ratings Engine start 0.5 A @ 125 VAC; 2 A @ 30 VDC SPST normally closed (NC) Common fault Load control Auxiliary...

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. Suitable for control of motors, electric discharge lamps, tungsten filament lamps and electric heating equipment where the sum of motor full-load ampere ratings and the ampere ratings of other loads do not exceed the ampere rating of the switch and the tungsten load does not...

Service Entrance Transfer Switch Ratings The service entrance transfer switch is factory-equipped with a normal source disconnect circuit breaker. Switch Rating, Amps Codes and Standards The ATS meets or exceeds the requirements of the following specifications: D Underwriters Laboratories UL 67, Enclosed Panel Boards (load center models) file # E251086 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...

Available Accessories - Load shed kit - Accessory board D Alarm horn indicates system faults D Adjustable time delays: d d d d d Engine start Engine cooldown Preferred to standby Standby to preferred Exercise duration D Inputs and Outputs: d Remote start/stop input (loaded) d Programmable exerciser input d Generator set supplying load output: 10 A @ 120 V SPST normally open (NO) contact D External alarm module connection D Dip switches: d 1 week/2 week exerciser d Load/no load exercise mode (for optional programmable exerciser) d Momentary/maintained external start/stop input: Selects...

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 Kohler Power Systems Asia Pacific Headquarters 7 Jurong Pier Road Singapore 619159 Phone (65) 6264-6422, Fax (65) 6264-6455 Current Rating Kohlerr Model Designation Key This chart explains the Kohlerr transfer switch model designation system. The sample model designation shown is for a Model R service entrance rated automatic transfer switch that uses a standard-transition contactor with...