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Home My WebLink AboutProduct Review; Kohler Automatic Switch Transfer Switch1 B•1iH 4W 4R19✓ V RYfFY KOHLER® In T Cb n nrin.Model: RXT Automatic Transfer Switch ST. Lucie County, Permlitting 100-400 Amps 09001 Model RXT Automatic Transfer Switch KOHLER. The Model RXT'automatic transfer switch is designed for use NATIONALLY REGISTERED only with Kohler® generator Sets equipped With RDC2 or DC2 generator set/transfer switch controls. The transfer switch operation is controlled by the RDC2/DC2 controller. Covers have been removed for illustration. Available Models • 100, 200, and 400 amp standard and service entrance models are available. • 150 and 300 amp service entrance models are also available. • Combined interface/load management board is available on single-phase standard and service entrance models. (Not available on 3-phase or load center models.) • 100 amp standard single-phase models are available. with or without a 16-space load center. Up to 8 tandem breakers can be used for a total of 24 circuits. • 100amp standard single phase model with a 12-space load center and a NEMA 1 enclosure is available as a standalone non -configurable spec (GM85273-SA,. • See page 7.for more information. Standard Features • Allows utility voltage display on the RDC2/DC2 generator set/transfer switch controller, available exclusively on Kohler® residential and light commercial generator sets •, UL listed o UL 1008 listed, file #E58962 o Models with load centers use UL 67 listed components • GSA certification, file # LR58301, is available for: o Standard ATS without load center (single and three-phase) o Service entrance ATS 100 and 200 amp models • Corrosion -resistant NEMA 3R aluminum enclosure o Padlockable o Approved for indoor or outdoor installation o ANSI 49 gray • NEMA 1 enclosure available on 100 amp load center models • Contactor electrically and mechanically interlocked • Double throw inherently interlocked design • 'Contactor manually operable for maintenance purposes • Silver alloy main contacts • Transfer switches are 100% equipment rated and can be applied at the rated current without derating (non -service .entrance- models) • Service entrance models include disconnect circuit breaker on the utility (normal) source side (80% rated) • Five-year limited warranty Standard Interface Board • Standard interface board connects to the Model RDC2 or DC2 generator set/transfer switch controller. • Includes a load control contact that provides a 5 minute time delay for startup of selected loads after transfer to the emergency source. Use for large motor loads. Combined Interface/ Load Management Board • Optional combined interface] load management board replaces the standard interface board and connects to the Model RDC2 or DC2 generator set/transfer switch controller. • The combined board is available on single-phase standard and service entrance models. (Not available on 3-phase or load center models.) • The combined board automatically manages up to six residential loads: o Up to four customer -supplied power relay modules can be connected for management of non -essential secondary loads. o _ Two HVAC relays are included for control, of two independent air conditioner loads. G11-140 (Model RXT Automatic Transfer Switch) 3/20g Pagel Specifications Codes and Standards Standard Interface Board Controller interface connections A and B #20 AWG shielded twisted -pair Belden 9402 or 8762 or equivalent Controller interface connections PWR and COM #12-20 AWG (see ATS Installation Manual) Load control contact rating 10 A @ 250 VAC Load control connections #12-18 AWG Note: For combined interface/load management board specifications, see page 3. Environmental Specifications Operating temperature - 20°C to 70-C (- 4°F to 158°F) Storage temperature - 40°C to 85°C (- 40-F to 185-F) Humidity 5 to 950% noncondensing The ATS meets or exceeds the requirements of the following specifications: • Underwriters Laboratories UL 1008, Standard for Automatic Transfer Switches for Use in Emergency Systems, file # E58962 • Underwriters Laboratories UL 508, Standard for Industrial Control Equipment • GSA certification available, file #LR58301(not available for 150, 300; or 400 amp service entrance or 100 amp load center models). Must be selected when the transfer switch is ordered. • NFPA 70, National Electrical Code • NFPA 110, Emergency and Standby Power Systems • NEMA Standard 1C10-1993, AC Automatic Transfer Switches Cable Sizes AL/CU UL-Listed Solderless Screw Type Terminals for External Power Connections Switch Range of Wire Sizes, Cu/AI Size, Normal and Emergency Load Neutral Ground Amps Switch Phases Standard 1 (1) #14 - 1/0 AWG (1) #14-1/0 AWG (5) #12 to 250 KCMIL (Cu) or (5) #10 to 250 KCMIL (An 12-or 16- s ace load P center 1 (1) #14-1/0 AWG per customer -supplied circuit breaker (26) #4 - 14 AWG or 2 #14 - 1/0 AWG or () 9 #6 - #14 AWG ( ) (NEMA 1) (1) #6 - 210 AWG (4) #14 - 110 AWG 100 16-space load center 1 (1) #14-1/0 AWG per customer -supplied (26) #4 - 14 AWG or (2) #14 - 1/0 AWG or (NEMA 3R) circuit breaker (1) 2/0 AWG Service 1 Normal: (1) #12-2/0 AWG (1) #14-1/0 AWG (5) #12 to 250 KCMIL (Cu) or Entrance Emerg: (1) #14-1/0 AWG (5) #10 to 250 KCMIL (Al), 3-Phase 3 (1) #14-1/0 AWG (1) #14 -1/0 AWG (3) #4 AWG - 600 KCMIL (4).#14-1/0 AWG (6) 110 AWG - 250 KCMIL (9) #14 - #6 AWG 150 Service 1 Normal: (1) #4-300 KCMIL (1) #6 -250 KCMIL (5) #12 to 250 KCMIL (Cu)or 200 Entrance Emerg: (1) #6 - 250 KCMIL (5) #10 to 250 KCMIL (Al) 200 Standard 1 (1) //6 AWG - 250 KCMIL (1) #6 - 250 KCMIL O #12 to 250 KCMIL Cu or 5 ( ) (9) #14 - #4 AWG 3-Phase 3 (5) #10 to 250 KCMIL (AQ (4) #14 - 1/0 AWG 300 400 Service Entrance i Normal:: (1) #1 - 600 KCMIL or (2) #1- 250 KCMIL (2) #6 - 250 KCMIL (3) #4 AWG - 600 KCMIL (6) #6 - 3/0 AWG Emerg: (2) #6 - 250 KCMIL (6) 1/0 AWG - 250 KCMIL Standard 1 3-pole 3 (2) #6-250 KCMIL (2) #6-250 KCMIL 400 208-240 V (3) #4 AWG -600 KCMIL (6) #6 - 3/0 AWG (6)1/0 AWG - 250 KCMIL 3 or 4 le pole 3 (1) #4-600 KCMIL (1) #4-600 KCMIL 480V (2) 1/0-250 KCMIL (2) 1/0-250KCMIL Note: Data is subject to change. Refer to the transfer switch dimension drawings and wiring diagrams.for planning and installation. GII-140(Model RXIAutomaticTransfer Spritch) =Og Paget Optional Combined Interface/Load Management Board The RXT transfer switch is available with either a standard interface board or a combined interface/load management board. The combined board allows load management as described below. Load Management • The combined load management board disconnects non -critical loads to prevent generator overload, in compliance with NEC. • The combined load management board monitors generator current and frequency to determine when to add or shed loads. This monitoring prevents frequency drops that can damage valuable electronics like computers and televisions. • Load management allows the use of a smaller generator set. Operation • Loads are automatically added or shed based on generator capacity. • The load control system uses dynamic logic to prevent shedding important loads unnecessarily when air conditioning, refrigerator, or water pump motors start (patent pending). • The load management board and generator communicate to provide smart power management. The time to shed loads decreases as each load is shed to quickly adapt to critical power requirements. • Load shed power level and frequency setpoinis can be adjusted using a personal computer (laptop) and Kohler® SiteTech- software, which is only available to Kohler - authorized distributors and dealers. Load Shed Specifications Priority Setting • Loads are added and shed according to their priority. Load 1 is the top priority, which is added first and shed last. Load 6 is the lowest priority. Less critical loads can be turned off automatically when essential appliances are running. Load priorities are hard -wired at installation. Viewing Load Shed Outputs with OnCueo Plus • Use Kohler's OnCue® Plus Generator Management System (sold separately) to view load status (On or Oft) for loads connected to the load shed relays. • Use OnCueG Plus to remotely monitor when loads are shed or added. • The load shed outputs can be labeled in OnCue® Plus. Current Transformer • The combined load management board option includes a 400 amp current transfomer (CT) for load monitoring. • A larger diameter CT is available for applications that require larger cables: • A 500 amp CT is available for use with a 60RCL generator. • See the table below for current transformer specifications and optional kit numbers. Connection Rating Connection Pilot Relays* 125VAC, 10 A total (general purpose) #12-20 AWG 120VAC, 125VA (pilot duty) HVAC Relays (qty. 2) 125VAC, 10 A (general purpose) #12-20 AWG 120VAC, 125VA (pilot duty) RBUS Communication and Power Use Belden #9402 or equivalent 20 AWG Connections to the RDC2/DC2 0.5 A @ 12 VDC shielded, twisted -pair communications controller cable # * Four (4) pilot relays are provided for customer -supplied normally closed load -switching contactors/relays. The combination of four load relay outputs cannot exceed 10 amps total current draw. Kohler® power relay modules are recommended. # For long distances, use an equivalent shielded, twisted -pair cable for RBUS connections and individual 12-20 AWG wires (qty. 2) for power connections. Current Transformer Specifications Ratio Outer Diameter Inner Diameter Service Part (Amps -VAC) mm fn.) mm (in.) Number Sales Kit Part Number CTAvailability 400:3 63.5 (2.5) 28.7 (1.13) GM83929 N/A Included with combined board 400:3 111.8 (4.4) 57.2 (2.25) GM17250 GM17250-KP1-QS Sold Separately 500:3 171.5 (6.75) 108.0 (4.25) GM60264 GM17250-KP2-QS Sold Separately (use with 60RCL) G71-140 (Model RXT Automatic Transfer Switch) 3/20g Page 3 Withstand and Close -On Ratings (WCR) Service Entrance Transfer Switch Ratings The service entrance transfer switch is factory -equipped with a normal source disconnect circuit breaker. Suitable for the 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 exceed 30 percent of switch rating. Switch Rating, Amps * WCR, RMS Symmetrical Amps at 240 VAC 100, 150, 200 22,000 300,400 35,000 * Continuous load current not to exceed 80% of switch rating. Contactor Ratings with Coordinated Circuit Breakers Single-phase transfer switches are UL listed at 240 VAC maximum. Three-phase transfer switches are rated at 480 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 the 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 exceed 30 percent of switch rating. The transfer switch is rated for use on a circuit capable of delivering not more than the RMS symmetrical amperes maximum as shown in the tables below, but no greater than the interrupting capacity of the selected breaker. WCR Ratings with Specific Manufacturer's Molded -Case Circuit Breakers Switch Number WCR, RMS Rating, Voltage, of Poles/ Symmetrical Maximum Amps max.. Phases Amps Manufacturer Type or Class Size, Amps 100 240 2 pole/ 1 phase 10,000 Any Breaker * Any Breaker (0.025 seconds max.) — 250 240 1 Fn le/ 10,000 Any Breaker * Any Breaker (0.025 seconds max.) — FCL 100 JGS, JGH, JGC, JGU, JGX, JBD, JD, HJD, JDC, 250 Eaton LCL, LCLA LDC, CLDC, KDB, Im, Him, ImC, LD, CLD, 400 HLD, CHLD CEDE, HED4, HED6 125 CFD6, FD6A, FXD6, HFD6, HFXD6, HHFD6, HHFXD6 250 100 200 480 3 pole/ p 4 pole/ 3 phase 30,000 ITE/Slemens CJD6 400 SEL, SEP, THLC1, PE_E, PE_N, PE_H, PE_L 150 THL02 225 General Electric SFH, SFL, SFP, PE_E, PE_N, PE_H, PE_L 250 SGH, SGL, SGP, FGN, FGH, FGL, FGP, PG_E, 400 PG_N, PG_H, PG_L, PG_P HG, HJ, HL, HR 150 JJ, JL, JR 250 Schneider LG, LEI, LL, LR 400 * For higher WCR values, contact the factory for additional specific breaker ratings. G11-140(Model RXTAutomatic Transfer Switch) 3/20g Page4 WCR Ratings with Specific Manufacturer's Molded -Case Circuit Breakers Switch Number WCR, RMS Rating, Voltage, of Poles/ Symmetrical Maximum Amps max. Phases Amps Manufacturer Type or Class Size, Amps ABB T5, T6 600 CHKD, CKD, DK, HKD, KD, KDB, KDC, LATRIPAC, LCL 400 Eaton CHLD, CLD, CLDC, HLD, LD, LDB, LDC 600 HMDL, MDL, NB TRI- PAC 800 General Electric FGH, FGL, FGN, FGP, SGHA 600 GJD6, HHJD6, HHJXD6, HJD6, HJGA, HJXD6, JD6, JXD2, JXD6, SGJD6, SHJD6, SJD6, NJGA, 400 300 400 240 2 pole/ 1 phase 35,000 Siemens LJGA CLD, HHLD, HHLXD, HLD, HLGA, HLXD, LD, LLGA, LXD, NLGA, SCLD, SHLD, SLD 600 CMD, HLMD, HLMXD, HMD, HMG, HMXD, LMD, LMG, LMXD, MD, MXD, NMG, SCMD, SHMD, 800 SMD LA, LC, LE, LH, U, LX, DU 400 Square D DG, DJ, DL, LC, LE, U, LX, LXI 600 Merlin Gerin CJ400H, CJ400L, CJ40ON 400 GJ600H,CJ60ON 600 Schneider LJ, LL, LR 600 General Electric SEL, SEP, PE_N, PE_H, PE_L 150 240 3 pole/ 3 phase 4 pole/ 3 phase 65,000 SFL, SFP, PE_N, PE_H, PE_L 250 SGL, SGP 400 SGL, SGP, FGL, FGP 600 HJD, JDC, JGC, JGH, JGU, JGX 250 CHLD4, CLD, HLD4, CLDC, LDC, KDC, HKD, 400 Eaton CHMDL4, GMDL4 CHLD6, HDL6, CHMDL6, CMDL6, CLDC, CLD6, 600 LDC6,CLDG6 CHMDL8, HMDL8, MDL8, CMDL8 800 CFD6, HFD6, HFXD6, HHFD6, HHFXD6 250 CJD6 400 400 480 3 pole/ 3 phase 4 pole/ 50,000 ffE/Siemens CLD6, HHLD6, H14LXD6, HLD6, HLXD6 600 CMD6, MD6, HMD6, HMXD6, MXD6 800 SEL, SEP, PE-N, PE H. PE L - - 150 SFL, SFP, PE_N, PE_H, PE_L 250 3 phase SGL, SGP 400 General Electric FGL, FGP, SGL, SGP, PG H, PG , PG-N, 600 PG_P - -L HJ, HL, HR 150 JJ, JL, JR 250 Schneider U. LL, LR 600 MJ 800 100,000 General Electric PG H, PG_L, PG P 600 G11-140 (Model RXT Automatic Transfer Switch) 3f20g Page 5 Dimensions and Weights Note: Always use the transfer switch dimension drawing for planning and installation. Weights and dimensions may vary for different configurations. See the Operation/Installation Manual or your local distributor for dimension drawings. Transfer switch weights and dimensions shown in the table do not include packaging. To estimate the shipping weight, add 3 kg (5 lbs.) or 10% (whichever is larger) to the weight shown. Amps Description, Dimensions H x W x D mm in. 't Shipping Weight i k9 (lb.) Dimension Drawing Single phase 623 x 335 x 180 (24.5 x 13.2 x 7.1) 7 (15) ADV-8688 With 12-space load center (NEMA 1) 610 x 330 x 154 (24.0 x 13.0 x 6.0) 12 (26) ADV-9186 With 16-space load center (NEMA 1) 610 x 330 x 154 (24.0 x 13.0 x 6.0) 12 (26) ADV-9187 100 With 16-space load center 614 x 335 x 180 (24.2 x 13.2 x 7.1) 8 (18) ADV-9188 Three phase 682 x 462 x 228 (26.8 x 18.2 x 9.0) 14 (30) ADV-8689 Service entrance (ASE) 734 x 416 x 175 (28.9 x 16.4 x 6.9) 10 (22) ADV-9046 Service entrance (CSE) 754 x 416 x 175 (29.7 x 16.4 x 6.9) 14 (30) ADV-8797 150 Service entrance (ASE) 734 x 416 x 175 (28.9 x 16.4 x 6.9) 12 (26) ADV-9046 Service entrance (ASE) 734 x 416 x 175 (28.9 x 16.4 x 6.9) 12 (26) ADV 9046 Service entrance (CSE) 754 x 416 x 175 (29.7 x 16.4 x 6.9) 16 (36) ADV-8798 200 Single phase 623 x 335 x 180 (24.5 x 13.2 x 7.1) 7 (15) ADV-8688 Three phase 682 x 462 x 228 (26.8 x 18.2 x 9.0) 14 (30) ADV-8689 300 Service entrance 1075 x 559 x 329 (42.3 x 22.0 x 12.9) 46 (101) ADV-8694 Single phase. 1067 x 559 x 329 (42.0 x 22.0 x 12.9) 55 (120) ADV-8691 3-Pole1208- 240 volts 1067 x 559 x 329 (42.0 x 22.0 x 12.9) 41 (90) ADV-8692 400 3-Pole/480 volts 1222 x 610 x 343 (48.1 x 24.0 x 13.5) 59 (130) ADV-8693 4-Pole 1222 x 610 x 343 (48.1 x 24.0 x 13.5) 59 (130) ADV-8693 Service entrance 1075 x 559 x 329 (42-3 x 22.0 x 12.9) 46 (101) ADV-8694 t Depth does not include the padlock hasp on the front of the enclosure. # Transfer switch weights are approximate and do not include packaging. Note: Enclosures are type NEMA 3R except as noted. G71-140 (Model RXT Automatic Transfer Switch) 3120g Pages Accessories ❑ Auxiliary position -indicating contacts • One closed on normal position and one closed on emergency position • Form C contacts rated 15 A @ 250 VAC ❑ Power relay modules • 50 amp DPST power relay mounted in a NEMA type 3R enclosure • Use up to four modules with the combined interface/load management board • UL/cUL listed • Dimensions: 172 x 233 x 92 mm (6.8 x 9.2 x 3.6 in.) • For more information, see specification sheet G6-1.43 ❑ Status indicator kit for standard interface board • LEDs indicate normal and emergency source availability and contactor position • Mounts on the outside of the RXT enclosure • View transfer switch status without removing enclosure cover • An overhang on the enclosure protects the indicator panel and ribbon cable opening • Dimensions: 92 mm x 42 mm (3.62 in. x 1.65 in.) • Connects to the standard interface board only • For more information on the status indicator kit, see specification sheet G11-123 ❑ Status indicator kit for combined interface/load management board • LEDs indicate normal and emergency source availability and contactor position • Dual color LEDs for each load indicate load status (powered or shed) and flash during atest • Load shed test button allows the operator to cycle the load shed relays in order of priority (when generator is in RUN mode) • Mounts on the outside of the RXT enclosure • View transfer switch and load status without removing enclosure cover • An overhang on the enclosure protects the indicator panel and ribbon cable opening • Dimensions: 183 mm x 42 mm (7.20 in, x 1.65 in.) • Connects to the combined interface/load management board only q. For more information on the status indicator kit, see specification sheet G11-123 ❑ Auxiliary circuit breaker (service entrance models only) • 15 amp single -pole type QO circuit breaker • Mounts on a bracket inside the enclosure Available Models All Model RXT transfer switches are standard -transition 60 Hz automatic transfer switches. Letters in parentheses refer to,the model designation code described on the last page. Am Description Connections Voltages Poles Phases WCR § RMS Symmetrical Amps 208 (C) 240 (F) 480 (M) Standard (A) • 2 (N) 1 10,000 Standard, with 16-space load center (B) ¶ • 2 (N) 1 10,000 100 Standard, with 12 space load center" • 2 (N) 1 10,000 Service entrance (ASE, CSE) • 2 (N) 1 22,000 Standard, 3-phase (A) • • • 3 m or 4 (V) 3 30,000 150 Service entrance (ASE) • 2 (N) 1 22,000 Standard (A) • 2 (N) 1 10,000 200 Service entrance (ASE, CSE) • 2 (N) 1 22,000 Standard, 3-phase (A) • • • 3 (T) or 4 (V) 3 30,000 300 Service entrance (ASE) • 2 (N) 1 35,000 Standard (A) • 2 (N) 1 50,000 400 Service entrance (ASE) • 2 (N) 1 35,000 Standard, 3-phase (A) • • • 3 (r) or 4 M 3 50,000 § Withstand and close -on rating. See pages 3-5 for WCR information and specific breaker ratings. ¶ With 16-space load center and NEMA t or NEMA 3R enclosure. Up to 8 tandem breakers can be used, for a maximum of 24 circuits. *" GM85273-SA with 12-space load center and,NEMA 1 enclosure: Note: Combined interface board is available on single-phase standard or service entrance models. (Not available on 3-phase or load center models.) G11-140 (Model RXT Automatic Transfer Switch) 3/20g Page 7 KOHLER® Phone 9 CO., Kohler,Wisconsina9253044 USA Phone 920-457-444i, Fax 920-459-1'646 For the nearest sales and service outlet in the US and Canada, phone 1-800-544-2444 KOHLERPower.com Model Designation Model Controls Voltage Poles Enclosure Current Rating Connections Record the transfer switch model designation in the boxes: The transfer switch model designation. defines ratings and characteristics as explained below. Sample Model Designation: FW-JFNC-02O0A Model RXT Kohler Automatic Transfer Switch Controls J: Interface for RDC2/DC2 Controller (standard or combined interface/load management) Voltage/Frequency C: 208 Volts/60 Hz (3-phase only) F: 240 Volts/60 Hz M: 480 Volts/60 Hz (3-phase only) Number of Poles/Wires N: ' 2-pole, 3-wire, solid neutral (120/240 V only) T. 3-pole, 4-wire, solid neutral V. 4-pole, 4-wire, switched neutral Availability is subject to change without notice. Kohler Co. reserves the right to change the design or specifications without notice and without any obligation or liability whatsoever. Contact your local Kohler® generator distributor for availability. (9 2014 Kohler co. AN rights reserved. Gii-M (Model RXTAutomatic Transfer Switch) 3/20g Pages Enclosure A: NEMA 1 C: NEMA 3R * NEMA 1 enclosure is available on 100 amp load center models only. Current Rating 0100: 100amps 0300: 300 amps 0150: 150 amps 0400: 400 amps- 0200: 200 amps Connections A No load center B: With load center (100 amp single-phase only) ASE: Service entrance rated' CSE: Service entrance rated with CSA certification (100/200 amps only) DISTRIBUTED BY: