JK Full Voltage Controller

Toshiba’s medium voltage JK Full Voltage Controller series features a streamlined, space-saving design. Full-voltage starters use no internal power cables, enhancing safety and simplifying maintenance. Expanded capabilities allow for flexible configurations, whether used as an individual starter or in a control center lineup with incoming disconnect switches. Additionally, the JK Series integrates seamlessly with Toshiba’s HVK switchgear.

Overview

Versatile

Designed for use as a starter for various motor types (induction, wound rotor, synchronous) or as a controller for transformers or capacitor switching.

 

Unique Vertical Magnetic Arc Dispersion System

Prolong the starter’s lifespan, reduces maintenance needs, and enhances safety by effectively managing arc energy.

 

Robust Design

Compact design reduces the installation footprint, while the rigid 11-gauge steel frame enhances durability and robust protection for the internal components, increasing efficiency and reliability in various applications.

 

Visible, Bolted Pressure Isolation Switch

Offers less resistance and wear on the starter, eliminating insertion pressure, and features a mechanical interlocking system enhancing safety and reliability.

 

Front Accessibility

Simplifies installation and maintenance by providing front accessibility to the motor connection points and the main bus.

 

Isolated Low Voltage Door & Swing-Out Sub Panel

Features a steel barrier for protection against accidental contact, with main bus access through a hinged sub-panel. This barrier opens to fully expose the main horizontal and vertical busing, enabling inspection or connection to adjacent cubicles without requiring rear access.

 

Contactors Assembled & Tested by Toshiba

High-quality non-latched and latched-type contactors are available for simplified control and reduced power consumption.

Insulated Bearings

  • An electric motor operating on an adjustable speed drive is at risk for premature bearing failure caused by stray currents. Experience indicates using insulated bearings on both ends of the motors is the most effective way to protect the motor from destructive currents. A high level of bearing protection is especially beneficial in applications where motor maintenance and replacement are difficult.
  • Extended Horsepower Capability

  • Extended horsepower capability allows a smaller motor to run at a higher horsepower than its baseline depending on the application requirements. This provides motor users potential cost savings while achieving the same motor performance.
  • Insulation with Wide Thermal Capability

  • Critical cooling motors utilize many Class H insulation materials in its winding designs, which provides increased thermal protection. These motors operate with a very low temperature rise at rated conditions, giving them a wide thermal margin and extended motor life.
  • Low Vibration

  • A vibration level exceeding NEMA MG1 requirements provides stability and durability by prolonging motor and bearing life and helping to reduce downtime.
  • Specifications

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