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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)
Push Buttons (door mounted)
Single Phase Ammeter (door mounted)
CPT Secondary Fuses
Control Terminal Points for Customer Connections
Timers (for Reduced Voltage Controllers)
Standard Options:
Metering & Metering Switches
Ground Fault Protection Relay
Phase Sequence Protection Relay
RTD Monitor/Relay
Solid State (2E) Protection Relay
(Overload/Single Phase)
S2E21 Multi-funtion Protection Relay
Isolated Low Voltage Compartment
Visible, Bolted Pressure, Isolation Switch
Standard Features:
Bolted Pressure Isolation Switch
Less Resistance
Less Wear
Zero Insertion Pressure
Mechanical Interlocking System
Reduced Voltage Autotransformer
Controller
Additional Standard Features:
Shorting and Run, 400 Ampere, Vacuum
Contactors
NEMA Medium Duty, Three Winding, Copper
Wound Autotransformer with 50%, 65%, and
80% Taps
Adjustable Solid State Transition Timer
Adjustable Solid State Incomplete Sequence
Timer
The JK400 Series of motor controller is the result
of extensive research and development. This
state-of-the-art controller was designed in
Houston, Texas, and is currently being manufac-
tured under ISO 9001 standards in the same
manufacturing facility as Toshiba motors and
drives. The components in this new series have
been arranged in the most logical manner to
produce a tightly designed unit, and in the full
voltage type starters, uses no internal power
cables. This streamlined, space saving design
provides the ultimate in maintenance ease and
safety features.
These medium voltage controllers are available in
across-the-line or reduced voltage models for the
control of induction, wound rotor or synchronous
motors, transformers, or capacitors up to 6.6kV.
All controllers are designed to meet NEMA Class
E2 requirements. These fixed type controllers
are available in one or two high enclosures with
the following standard features:
Standard Features Full & Reduced
Voltage Controllers
Toshiba Medium Voltage Vacuum Contactor 400A
Bolted Pressure Switch Connections
30" Wide Footprint (Even in a Two High Design)
Rigid 11 Gauge Steel Frame
Front Accessible Main Bus
Current Transformers
Current Limiting, High Interrupting Capacity,
"R" Rated Motor Starting Fuses
Start and Stop Push Buttons
Run and Off Pilot Lights
Single Phase Ammeter
Control Power Transformer with Primary
and Secondary Fuses
Thermal Bimetallic Overload Relay
Separate Medium and Low Voltage
Compartments
Built-in Run/Test Circuit
Mechanical and Electrical Interlocks
If UL or CUL is required, specify when ordering.
Consult Factory for applicable models and options.
MEDIUM VOLTAGE CONTROLLERS
JK400 Series