Instruction/ maintenance manual of the product JK Series Toshiba
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JK Series POWER DISTRIBUTION 400A & 720A Fixed T ype Medium V oltage Motor Contr ollers.
The low voltage section is oversized and is at a convenient height. This section is isolated from the medium voltage section and includes: Thermal Overload Protection Relay Pilot Lights (door mounted).
T oshiba's JK400 series complies with EEMAC, NEMA, UL and CSA standards and is available in non-reversing and reversing full voltage, autotrans- former , reactor , multi-speed, synchronous and wound rotor configurations. Latched contactors are also available.
MEDIUM VOL T AGE CONTROLLERS JK720 Series The new JK720 Series of motor controller is the result of extensive research and development. This state-of-the-art controller was designed in Houston, T exas, and is currently being manufac- tured under ISO 9001 standards in the same manufacturing facility as T oshiba motors and drives.
T oshiba's JK720 series complies with EEMAC, NEMA, UL and CSA standards and is available in non-reversing and reversing full voltage, autotrans- former , reactor , multi-speed, synchronous and wound rotor configurations. Latched contactors are also available.
JK Series Product Specification 400A MEDIUM VOLTAGE FIXED CONTROLLER 1. Standards 1.1 Basic controller shall comply with NEMA ICS3-1993, Part 2 (ICS2-324) and UL 347 Standards.
2.4 Handling and Installation 2.4.1 Removable angles or eye bolts shall be pr ovided at the top of t he structure for lifting. 3. Pow er Bus 3.1 Horizontal power bus shall be located at the cent er rear of the cubicle, in the same location as other JK Series controllers.
4.2 Bolted Pressure Isolation Switch 4.2.1 A Toshiba type JK fixed mounted, gang-oper ated isolation switch shall be provided with each controller to isolate the medium vo ltage compartment from the power source. 4.2.2 The switch shall be directly driven by an externally operable handle mounted on the right hand flange of the cubicle.
4.3.3 Power connections from the isolation switch to the main power fuses shall be made using bus bar. Connections from the contactor through the current transformers to the outgoing load terminals shall be made using power cable furnished by others. 4.
5. Ratings 5.1 Controller shall be rated as follows: 5.1.1 Interrupting Ratings: 400 Ampere Controller: - contactor 7.0kA @ 6.9kV - fused controller 50kA RMS Sym. @ 7.2kV 200MVA @ 2.3kV 350MVA @ 4.0kV 400MVA @ 4.6kV 570MVA @ 6.6kV 5.1.2 Continuous Thermal Ratings: 400 Ampere Controller: Enclosure type Max.
JK Series Product Specification 720A MEDIUM VOLTAGE FIXED CONTROLLER 1. Standards 1.1 Basic controller shall comply with NEMA ICS3-1993, Part 2 (ICS2-324) and UL 347 Standards.
2.4.1 Removable angles or eye bolts shall be pr ovided at the top of t he structure for lifting. 2.4.2 Optional removable sill channels shall be available. 3. Pow er Bus 3.1 Horizontal power bus shall be located at the cent er rear of the cubicle, in the same location as other JK Series controllers.
4.2 Bolted Pressure Isolation Switch 4.2.1 A fixed mounted, gang-operated isolation sw itch shall be provided with each controller to isolate the medium voltage compartment from the power source. 4.2.2 The switch shall be directly driven by an externally operable handle mounted on the right hand flange of the cubicle.
4.3.3 Power connections from the isolation switch to the contactor shall be made using bus bar. Connections from the contactor through the curr ent transformers to the outgoing load terminals shall be made using power cable. 4.3.4 The contactor shall be supplied with an optional mechanical latch with provisions for manual or electrical trip.
4.5.7 An electrical interlock shall be provided to ensure the isolation switch does not open with the control power transformer under load. This interlock shall be designed such that during switch opening, the transformer secondary is disconnected prior to the opening of the switch blades.
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Medium V oltage Motor G7 Drive *pacjKSBROCH050218* ADJUST ABLE SPEED DRIVES MOTORS CONTROLS UPS INSTRUMENT A TION PLC INDUSTRIAL DIVISION 13131 W est Little Y ork Road, Houston, T exas 77041 T el 713/466-0277 Fax 713/466-8773 US 800/231-1412 Canada 800/872-2192 Mexico 01/800/527-1204 www .
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However, one of the most important roles played by the user manual is to help in solving problems with Toshiba JK Series. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Toshiba JK Series along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
