Power Bus | Toshiba JK Series specification

2.4Handling and Installation

2.4.1 Removable angles or eye bolts shall be provided at the top of the structure for lifting.

3.Power Bus

3.1Horizontal power bus shall be located at the center rear of the cubicle, in the same location as other JK Series controllers.

3.2Horizontal power bus ratings of 1200 and 2000 amperes are available. Bus sizes shall match those provided in other JK Series controllers.

3.3Horizontal power bus shall be braced for 50kA RMS symmetrical.

3.4Horizontal power bus shall be tin plated as standard with insulated bus and silver plating optional.

3.5Bare copper 1/4 x 2 inch horizontal ground bus shall be available and the location shall match other JK Series controllers.

3.6Vertical power bus feeding 400 ampere controllers shall be 1/4 x 1-1/4 inch tin plated copper. Insulated bus and silver plating are optional.

3.7Horizontal power bus shall be front accessible by removing or swinging open a panel.

4.Medium Voltage Controllers - 400 Amperes

4.1Medium Voltage Controller Compartment

4.1.1The medium voltage controller compartment for controllers rated 400 amperes shall consist of an isolation switch (4.2), a fixed mounted vacuum contactor (4.3), three fixed mounted power fuses (4.4), three current transformers and a control power transformer with primary fuses. Optionally a second control or potential transformer with primary fuses may be provided.

4.1.2Internal power connections between power components shall be made using either high voltage cable or bus bars.

4.1.3Connection of customer's outgoing load cables shall be made to terminals mounted on the rear of the medium voltage contactor. It shall be possible to terminate outgoing load cables with the removal of the horizontally mounted power fuses. Sufficient wire bending space shall be provided for terminating shielded cables as large as 1-2/0 per phase, or unshielded cables as large as 1-350MCM per phase, top or bottom entry.

4.1.4A zero sequence current transformer for ground fault sensing when required shall be provided. It shall be located within the MV compartment where customer’s load cable can be conveniently passed through the current transformer window prior to termination.

4.1.5Three current transformers for metering and relaying shall be provided. These shall be of the window type (or bar type as option) with burden capacity as required for operating the various meters and relays.

4.1.6Control power and optional potential transformers shall be of the encapsulated type with primary fuses. Primary side of transformers shall be wired to the load side of the main controller power fuses. Transformers shall be arranged to provide easy access for replacement of primary fuses.

JK Series specifications

The Toshiba JK Series represents a significant advancement in the field of home appliances, specifically in cooking technology. This innovative range of microwave ovens combines cutting-edge features, energy efficiency, and sleek design, making them a standout choice for modern kitchens.

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