KOHLER KEP Transfer Switch
Product Information
Specifications:
- Model: KEP
- Product Type: Automatic Transfer Switches Service Entrance Rated Controller
- Controller: Decision-Maker MPAC 1500
- Ratings:
- Power Switching Device: Molded case (MCCB) / Insulated Case (ICCB)
- Current: 200A (MCCB), 100-1200A (ICCB), 800-4000A (ICCB)
- Voltage, Frequency: 208-240 VAC 60 Hz, 208-480 VAC 60 Hz, 208-480 VAC, 60 Hz
Product Usage Instructions
Transfer Switch Standard Features:
The service entrance automatic transfer switches include various features such as enclosed contact power switching units with isolating mechanisms, UL 1008 listing, seismic certification, fully enclosed silver alloy contacts, short circuit current withstand testing, separate utility and generator power switching units, and more.
Service Disconnect Switch:
The service disconnect switch allows you to move the switch to the OFF position. It is a two-position switch with a padlockable cover that disconnects the normal and emergency sources. The controller display will show Service Disconnected, and the NOT IN AUTO LED will flash. An indicator lamp will illuminate to show that the switch is in the DISCONNECT position.
Automatic Transfer Switch Controller:
The Decision-Maker MPAC 1500 Controller features an LCD display with 4 lines x 20 characters, backlit for visibility. It offers complete programming and viewing capability at the door using the keypad and LCD display. LED indicators for source availability, transfer switch position, service required (fault), and not in auto are provided. Modbus communication is standard, and it allows for programmable voltage and frequency pickup and dropout.
FAQ:
- Q: What enclosures are available for the transfer switch?
A: NEMA 1, 3R, 4X, and 12 enclosures are available for the transfer switch. - Q: Can the transfer switch be manually operated?
A: Yes, the transfer switch has safe manual operation that permits easy operation even under adverse conditions. - Q: What types of overcurrent protection are included in the molded case circuit breakers and insulated case circuit breakers?
A: Molded case circuit breakers (MCCB) include thermal-magnetic or electronic trip overcurrent protection (80% rated), while insulated case circuit breakers (ICCB) include electronic trip overcurrent protection (100% rated).
Controller
- Decision-Makerr MPAC 1500
Ratings
| Power Switching Device | Current | Voltage, Frequency |
| Molded case (MCCB) | 200 | 208- 240 VAC 60 Hz |
| 100- 1200 | 208- 480 VAC 60 Hz | |
| Insulated Case (ICCB) | 800- 4000 | 208- 480 VAC, 60 Hz |
Transfer Switch Standard Features
Enclosed Contact Power Switching Units
- Service entrance automatic transfer switches incorporate an isolating mechanism and overcurrent protection on the utility supply, eliminating the need to have a separate, upstream utility source circuit breaker/disconnect switch.
- UL 1008 listed, file #58962
- IBC seismic certification available
- Fully enclosed silver alloy contacts provide high withstand rating.
- 3-cycle short circuit current withstand-tested in accordance with UL 1008
- Completely separate utility and generator set power switching units provide redundancy (no common parts) and are easy to service.
- Utility disconnect power switching units have overcurrent protection; generator disconnect is available with or without overcurrent protection:
- Molded case circuit breakers (MCCB) include thermal-magnetic or electronic trip overcurrent protection (80% rated).
- Molded case switches (MCSW) do not include overcurrent protection (100% rated) (available on generator disconnect only).
- Insulated case circuit breakers (ICCB) include electronic trip overcurrent protection (100% rated).
- Insulated case switches (ICSW) do not include overcurrent protection (100% rated) (available on generator disconnect only).
- Inherent stored-energy design prevents damage if manually switched while in service.
- Heavy-duty brushless gear motor and operating mechanism provide mechanical interlocking and extreme long life with minimal maintenance.
- Safe manual operation permits easy operation even under adverse conditions.
- All mechanical and control devices are visible and readily accessible.
- Padlockable service disconnect control switch
- Status indicators
- Two-position control circuit isolation switch disconnects utility power to the transfer switch controller.
- Load shed (Forced transfer from Emergency to OFF). (Customer-supplied signal [contact closure] is required for the forced transfer to OFF function.)
- ZEMA 1, 3R, 4X and 12 enclosures are available.
Service Disconnect Switch
- Service disconnect to OFF position
- Two-position switch with padlockable cover disconnects the normal and emergency sources.
- Controller display shows Service Disconnected and the NOT IN AUTO LED flashes.
- Lamp illuminates to indicate that the switch is in the DISCONNECT position.
Automatic Transfer Switch Controller
The Decision-Makerr MPAC 1500 Automatic Transfer Switch Controller is used on service entrance transfer switch models.
Decision-Makerr MPAC 1500 Controller
- LCD display, 4 lines x 20 characters, backlit
- Complete programming and viewing capability at the door using the keypad and LCD display
- LED indicators: Source available, transfer switch position, service required (fault), and “not in auto”
- Modbus communication is standard
- Programmable voltage and frequency pickup and dropout settings
- Programmable time delays
- Programmable generator exerciser
- Time-based load control
- Current-based load control (current sensing kit required)
- Two programmable inputs and two programmable outputs (one programmable input and one programmable output are used for factory connections on these models and are not available for customer connection)
- Up to four I/O extension modules available
- RS-485 communication standard
- Ethernet communication standard
- Three-source system
- Prime power
For more information about Decision-Makerr MPAC 1500 features and functions, see specification sheet G11- 128.
Ratings
| Withstand Current Ratings in RMS Symmetrical Amperes *
(No upstream circuit breaker protection required) |
||||
| Power
Switching Device |
Switch Rating, Amps | Voltage, Max. | Amps RMS | |
| @ 240 V | @ 480 V | |||
| Molded case | 100 | 600 | 65,000 | 25,000 |
| 150 | ||||
| 200 | 240 | 100,000 | NA | |
| 250 | 600 | 65,000 | 65,000 | |
| 400 | 600 | 65,000 | 50,000 | |
| 600 | ||||
| 800 | ||||
| 1000 | ||||
| 1200 | ||||
| Insulated case | 800 | 600 | 100,000 | 100,000 |
| 1000 | ||||
| 1200 | ||||
| 1600 | ||||
| 2000 | ||||
| 2500 | ||||
| 3000 | ||||
| 4000 | ||||
| * With molded case/insulated case switching devices equipped with integral overcurrent protection. (UL 1008 WCR) | ||||
Typical Single-Line Diagram
Application Data
| Auxiliary Position-Indicating Contacts | |
| MCCB Models | Use programmable digital outputs |
| ICCB Models | 3 Normal, 2 Emergency
Rated 2.5 A @ 24/48 VDC, 6 A @ 480VAC |
| Environmental Specifications | |
| Operating Temperature | – 15°C to 50°C (5°F to 122°F) |
| Storage Temperature | – 20°C to 70°C (- 4°F to 158°F) |
| Humidity | 95% noncondensing |
Cable Sizes
| Model | Amps | Cable Sizes, Al/Cu Wire | ||
| Circuit Breaker (per Phase) | Neutral | Ground | ||
| KEP, MCCB | 100 | (1) #14 – 1/0 AWG | (3) #14 – 2/0 AWG | (3) #14 – 1/0 AWG |
| 150 | (2) #2 – 4/0 AWG | |||
| 200 | (1) #6 – 350 KCMIL | (3) #6 – 350 KCMIL | ||
| 250 | ||||
| 400 | (2) 2/0 – 500 KCMIL | (6) 2/0 – 500 KCMIL | (3) #6 – 350 KCMIL | |
| 600 | ||||
| 800 | (3) 2/0 – 500 KCMIL | (9) 2/0 – 500 KCMIL | ||
| 1000
1200 |
(4) 4/0 – 500 KCMIL | (12) 4/0 – 500 KCMIL | (3) #4 – 600 KCMIL or (6) 1/0 – 250 KCMIL | |
| KEP, ICCB | 800 | (3) 3/0 – 750 KCMIL | (9) 3/0 – 750 KCMIL | (3) #6 – 250 KCMIL |
| 1000 | (4) 3/0 – 750 KCMIL | (12) 3/0 – 750 KCMIL | ||
| 1200 | ||||
| 1600 | (5) 3/0 – 750 KCMIL | (15) 3/0 – 750 KCMIL | ||
| 2000 | (6) 3/0 – 750 KCMIL | (18) 3/0 – 750 KCMIL | ||
| 2500 | (8) 3/0 – 750 KCMIL | (24) 3/0 – 750 KCMIL | ||
| 3000 | (9) 3/0 – 750 KCMIL | (27) 3/0 – 750 KCMIL | ||
| 4000 | (12) 3/0 – 750 KCMIL | (36) 3/0 – 750 KCMIL | ||
Circuit Breaker Specifications
| KEP Molded Case Circuit Breakers (MCCB) | ||||||||
| Breaker | Utility Disconnect | Generator Disconnect (note that units with MCSW selected will not have a trip unit) | ||||||
| Mfr | Amps | Model | Trip Unit | Type | Trip Unit
Function |
Trip Unit | Type | Trip Unit
Function |
| ABB | 100 | Tmax Ts3 | NI | BM/EL | TM | NI | BM/EL | TM |
| 150 | Tmax Ts3 | |||||||
| 200 | Tmax Ts3 | |||||||
| 250 2P/3P | Tmax T5 | PR221 | Electronic | LS/I | PR221 | Electronic | LS/I | |
| 250 4P | Isomax S5 | PR211 | Electronic | LI | PR211 | Electronic | LI | |
| 400 | Tmax T6 | PR221 | Electronic | LS/I | PR221 | Electronic | LS/I | |
| 600 | Tmax T6 | |||||||
| 800 | Tmax T6 | |||||||
| 1000 | Tmax T7 | PR331/P | Electronic | LSIG | PR231/P | |||
| 1200 | Tmax T7 | |||||||
| NI = Non-interchangeable TM = Thermal/ Magnetic
BM/EL = Bimetal/ Electromagnet MCSW = Molded Case Switch |
||||||||
| KEP Insulated Case Circuit Breakers (ICCB) | ||||||||
| Breaker | Utility Disconnect | Generator Disconnect (note that units with ICSW selected will not have a trip unit) | ||||||
| Mfr | Model | Amps | Trip Unit | Type | Trip Unit
Function |
Trip Unit | Type | Trip Unit
Function |
| Schneider | NW | 800 | ML 5.0A | Electronic | LSI | ML 3.0 | Electronic | LI |
| NW | 1000 |
ML 6.0A |
Electronic | LSIG | ML 3.0 | Electronic | LI | |
| NW | 1200 | |||||||
| NW | 1600 | |||||||
| NW | 2000 | |||||||
| NW | 2500 | |||||||
| NW | 3000 | |||||||
| NW | 4000 | |||||||
| ICSW = Insulated Case Switch
ML = Micrologic |
||||||||
Weights and Dimensions
Note: Always use the transfer switch dimension drawing for planning and installation. Weights and dimensions may vary for different configurations. See your local distributor for dimension drawings.
Weights and dimensions are shown for NEMA type 1 enclosures. Consult the factory for other enclosure types.
| Molded Case Circuit Breaker (MCCB) Models | |||||||||
| Model | Amps | Dimensions, mm (in.) | Weight, kg (lb.) | Dimension Drawing | |||||
| Poles | Height | Width | Depth | 2P | 3P | 4P | |||
| KEP, MCCB | 100-150 | 2,3,4 | 914 (36.0) | 725 (28.5) | 462 (18.2) | 68 (150) | 68 (150) | 68 (150) | ADV-8612 |
| 200 | 2,3 | 914 (36.0) | 725 (28.5) | 462 (18.2) | 68 (150) | 68 (150) | N/A | ||
| 250 | 2,3,4 | 914 (36.0) | 725 (28.5) | 462 (18.2) | 81 (178) | 81 (178) | 81 (178) | ||
| 400 | 2,3,4 | 1231 (48.4) | 995 (39.2) | 486 (19.1) | 195 (430) | 195 (430) | 195 (430) | ADV-8614 | |
| 600-800 | 2,3,4 | 1231 (48.4) | 995 (39.2) | 486 (19.1) | 200 (441) | 200 (441) | 200 (441) | ||
| 1000-1200 | 3,4 | 2009 (79.1) | 864 (34.0) | 515 (20.3) | N/A | 247 (545) | 254 (560) | ADV-8996 | |
| Insulated Case Circuit Breaker (ICCB) Models | |||||||
| Model | Amps | Poles | Dimensions, mm (in.) | Weight, kg (lb.) | Dimension Drawing | ||
| Height | Width | Depth | |||||
| KEP, ICCB | 800 | 3 | 2324 (91.5) | 914 (36.0) | 1219 (48.0) | 544 (1200) | ADV-8618 |
| 4 | 2324 (91.5) | 914 (36.0) | 1219 (48.0) | 635 (1400) | |||
| 1000-1200 | 3 | 2324 (91.5) | 914 (36.0) | 1219 (48.0) | 553 (1220) | ||
| 4 | 2324 (91.5) | 914 (36.0) | 1219 (48.0) | 644 (1420) | |||
| 1600 | 3 | 2324 (91.5) | 914 (36.0) | 1372 (54.0) | 598 (1320) | ||
| 4 | 2324 (91.5) | 914 (36.0) | 1372 (54.0) | 625 (1380) | |||
| 2000 | 3 | 2324 (91.5) | 914 (36.0) | 1372 (54.0) | 607 (1340) | ||
| 4 | 2324 (91.5) | 914 (36.0) | 1372 (54.0) | 644 (1420) | |||
| 2500 | 3 | 2324 (91.5) | 914 (36.0) | 1524 (60.0) | 625 (1380) | ||
| 4 | 2324 (91.5) | 1067 (42.0) | 1524 (60.0) | 662 (1460) | |||
| 3000 | 3 | 2324 (91.5) | 914 (36.0) | 1524 (60.0) | 644 (1420) | ||
| 4 | 2324 (91.5) | 1067 (42.0) | 1524 (60.0) | 680 (1500) | |||
| 4000 | 3 | 2324 (91.5) | 1372 (54.0) | 1524 (60.0) | 907 (2000) | ||
Codes and Standards
The ATS meets or exceeds the requirements of the following specifications:
- EN61000-4-4 Fast Transient Immunity Severity Level 4
- EN61000-4-5 Surge Immunity Class 4 (voltage sensing and programmable inputs only)
- IEC Specifications for EMI/EMC Immunity:
- CISPR 11, Radiated Emissions
- IEC 1000-4-2, Electrostatic Discharge
- IEC 1000-4-3, Radiated Electromagnetic Fields
- IEC 1000-4-4, Electrical Fast Transients (Bursts)
- IEC 1000-4-5, Surge Voltage
- IEC 1000-4-6, Conducted RF Disturbances
- IEC 1000-4-8, Magnetic Fields
- IEC 1000-4-11, Voltage Dips and Interruptions
- IEC 60947-6-1, Low Voltage Switchgear and Control Gear; Multifunction Equipment; Automatic Transfer Switching Equipment
- IEEE Standard 446, IEEE Recommended Practice for Emergency and Standby Power Systems for Commercial and Industrial Applications
- IEEE 472 (ANSI C37.90A) Ring Wave Test
- NEMA Standard ICS 10- 2005, Electromechanical AC Transfer Switch Equipment
- NFPA 70, National Electrical Code
- NFPA 99, Essential Electrical Systems for Health Care Facilities
- NFPA 110, Emergency and Standby Power Systems
- Underwriters Laboratories UL 1008, Standard for Automatic Transfer Switches for Use in Emergency Standby Systems file #58962
Accessories
Accessories are available either factory-installed or as loose kits, unless otherwise noted.
Digital Meter *
- Measure and display voltage, current, frequency, and power
- 35 programmable alarms
- LCD display, 67 x 62.5 mm (2.65 x 2.5 in.)
- Pushbutton operation
- Password- protected programming menus
- Two digital inputs
- Two digital outputs
- Two Form A relay outputs
- Serial port for optional network connections
- Data logging
- Factory- installed
* Meter kit not available on MCCB models with NEMA 3R enclosures.
Heater, Anti-Condensation
- Hygrostat-controlled 120 VAC strip heater (customer-supplied voltage source required)
- 100 or 250 watts (sized for enclosure)
- Protective 15 Amp circuit breaker
Literature Kits
- Production literature kit (one set of literature is included with each transfer switch)
- Overhaul literature kit
RSA III Remote Serial Annunciator
- Monitors the generator set
- Monitors Normal and Emergency source status and connection
- Monitors ATS common alarm
- Allows remote testing of the ATS
- For more information, see specification sheet G6- 139.
Seismic Certification
- Certification depends on application and geographic location. Contact your distributor for details.
- Available for the transfer switches and enclosures shown below:
ATS Type and Size Enclosure, NEMA Type: Type Amps 1 3R 4X 12 MCCB 100- 600 • MCCB 100- 1200 • • • ICCB 800- 4000 • •
Surge Protection Device (SPD)
- SPD available for the normal source supply
- Surge protection reduces transient voltages to harmless levels
- Protection modes: L-L / L-N / L-G / N-G
- Replaceable phase and neutral cartridges for service
- Frequency: 50- 60 Hz
- Operating Temperature Range: – 40 to 176_F (- 40 to 80_C)
- Remote contacts for customer-supplied status indicators:
- Contacts: 1 NO, 1 NC
- Min Load: 12VDC / 10 mA
- Max. Load: 250 VAC / 1 A
- Wire Size (max.): 16AWG
- Fuse protection: 30 amps / 600 V
- UL 1449, 3rd Edition for Type 2 applications
- IEC 61-643-1, 2nd Edition T2/11
- See additional specifications below
Extended Warranties
- 2-year basic
- 5-year basic
- 5-year comprehensive
- 10-year major components
Controller Accessories
See the controller specification sheet for more information.
- Accessory Modules
- Alarm Module
- External Battery Supply Module
- Input/Output Module
- High-Power Input/Output Module
- Current Sensing Kit
- Line-to-Neutral Voltage Monitoring
- Padlockable User Interface Cover
SPD Specifications
Model Designation
Record the transfer switch model designation in the boxes. The transfer switch model designation defines characteristics and ratings as explained below.
Availability is subject to change without notice. Kohler Co. reserves the right to change the design or specifications without notice and any obligation or liability whatsoever. Contact your local Kohler generator distributor for availability.
2016 Kohler Co. All rights reserved.
Documents / Resources
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KOHLER KEP Transfer Switch [pdf] User Guide KEP Transfer Switch, KEP, Transfer Switch, Switch |