Toshiba XT-JK User Manual
POWER DISTRIBUTION
Solid
State Starters
Medium Voltage
200-400-600-720A
JK Series
SOLID STATE STARTER
JKSSS4+ Series
The JKSSS Series of motor starter is the result of
extensive research and development. This
streamlined, space saving design (only 30" wide)
provides the ultimate in maintenance ease and
safety features. These medium voltage solid state
starters are available for the control of induction,
wound rotor or synchronous motors, up to 6.9kV.
All starters are designed to meet NEMA Class E2
requirements.
Features
Soft Start
125% Continuous Duty
500% - 60 Seconds, 600% - 30 Seconnds
30" Wide Footprint
Digital Microprocessor Control
LCD Display w/Programming Keypad
Toshiba Medium Voltage Vacuum Contactors,
for Bypass and Input Isolation
Incoming, 400A JK Disconnect Switch - Bolted
Pressure Switch Connections
Current Limiting, High Interrupting Capacity,
"R" Rated Motor Starting Fuses
Two Stage Solid State Motor Protection
Starting: Programmable for Class 5 through 30
Running: Programmable for Class 5 through 30
Control Power Transformers with Primary and
Secondary Fuses
NEMA Type 1 Enclosure
Separate Medium and Low Voltage Compartments
Mechanical and Electrical Interlocks
Visible, Bolted Pressure, Isolation Switch
Less Resistance
Less Wear
Zero Insertion Pressure
Mechanical Interlocking System
Isolated Low Voltage Compartment
The low voltage section is oversized and is at a
convenient height. This section is isolated from
the medium voltage section.
Digital Control Module
LCD Display (two lines) and Status LEDs
(Power, Run, Alarm, Aux. Relays)
Programming Keypad (Non-volatile Memory)
Maintenance Data
Fault indications: Shorted SCR, Phase Loss, Shunt
Trip, Phase Imbalance, Phase Rotation, Overload,
Overtemp, Overcurrent, Short Circuit, Load Loss,
Ground Fault, Stator Phase Trip, RTD Trip, or Any Trip
Coast Down Time
Starts per Hour
Time Between Starts
Event History - Up to 60 events. Data includes
cause, date, time, phase and ground current.
Additional Features
Serial Communication Port:
RS485 or RS422 with Modbus RTU Protocol or
RS485 or RS422 with Windows Interface
Rugged Gate Firing Circuit Using Ring Transformer
Opto-isolated Inputs
Auxiliary Contacts - Form C, 5A @ 240Vac max.
Adjustments
Motor Full Load Ampere (FLA)
Dual Adjustments - Two independent settings
Initial Voltage 0 - 100% of nominal voltage
Current Limit 200 - 500% of motor FLA
Acceleration Time 1 - 120 seconds
Deceleration Time 1 - 60 seconds
Three custom Accel curves
Jog: 5 - 100% Volt., 1 - 20 sec., Current 100 - 500%
Kick Start: 10 - 100% Voltage, 0.1 - 2 sec.
Coast Down (Back Spin) Lockout Timer 1 - 60 min.
Starts-per-Hour Lockout Timer
1 - 10 successful starts per hour
1 - 60 min. between start attempts
Undercurrent 10 - 90% (with adjustable trip delay
1 - 60 sec.)
Overload Reset - Selectable Manual or Automatic
Two 4 - 20 mA Analog Outputs: Selectable from
Off, RPM, Hottest Non-Stator RTD, Hottest Stator
RTD, RMS Current, % of Motor Load
Options
Drawout Input Isolation, Vacuum Contactor
NEMA Type 12 or 3R Enclosure
1200 or 2000A Main Copper Bus
Available in MCC Lineups with Other JK Series
Starters (FVNR, FVR, RVAT, Synchronous, Etc.)
Available in MCC Lineups with Main Incoming
Disconnect Switch or Toshiba Vacuum
Circuit Breaker
The soft start is available as a controller only for
users which already have an existing full voltage
starter (disconnect switch, main power fuses &
contactor) and wants to add reduced voltage
starting and soft stop features.
PFC Contactor - Vacuum contactor for switching
Power Factor Correction Capacitor.
Manual (Full Voltage) Bypass Selection with solid
state protection (2E) or bimetallic overload.
If UL or CUL is required, specify when ordering.
Consult Factory for applicable models and options.
SOLID STATE STARTER
JKSSS4+ Series
T oshiba's JKSSS4 series complies with EEMAC,
NEMA, UL and CSA standards and is available in
non-reversing and reversing, multi-speed, synchronous and wound rotor configurations.
The JKSSS4 series is available in the following
enclosed ratings:
360 Amps Max.
2300-6900 Volts
Protective Features
z Electronic Overload:
Retentive Thermal Memory
Dynamic Reset Memory
z Phase Imbalance/Single Phase
z Short Circuit
z Ground Fault - Optional
z RTD T emperature
z Phase Reversal/Phase Sequence
z Overcurrent
z Start s-per-Hour
z Shorted SCR
z Undercurrent/Loss of Load
z Starter Overtemperature
z Shorted SCR
z Undervoltage
z Overvoltage
Continuous Current
Enclosure T ype
Type 1 Ventilated 360A
Type 12 Ventilated w/
Fans & Type 12 Filters
Type 1 Non-Ventilated 300A
Type 12 & 3R 300A
Short Circuit & Withstand Capability
Max. Continuous Amps*
90" One-High Controller
310A
Interrupting
Capacity
(Symmetrical
Amperes)
Interrupting
Capacity
(Symmetrical
MVA)
Short Time
Capability
30 Seconds
(Amperes)
Short Time
Capability
1 Second
(Amperes)
Dielectric
Withstand
1 Min ute
(kVAC)
200 @ 2.3 kV
50,000
@ 2.3 - 6. 6 kV
350 @ 4.0 kV
400 @ 4.6 kV
2400 6000 18.2 60
570 @ 6.6 kV
Approximate Maximum Horsepower Based on Continuous Current
Enclosed
Maximum
Continuous
Current
(Amperes)
360 1500 1750 1500 2500 3000 3000 4000 5000 4500
320 1250 1500 1250 2250 2500 2500 3500 4000 4000
300 1000 1250 1000 2000 2500 2250 3000 3500 3500
Synchronous
0.8 PF 1.0 PF 0.8 PF 1.0 PF 0.8 PF 1.0 PF
2300V 4200V 6600V
Motors
Maximum Horsepower at Utilization Voltage
Induction
Motors
Synchronous
Motors
Induction
Motors
Synchronous
Motors
Impulse
Voltage
Withstand
(kV)
Induction
Motors
If UL or CUL is required,
specify when ordering.
Consult Factory for
applicable models and
options.
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