Toshiba's JKSSS7 series complies with EEMAC,
NEMA, UL and CSA standards and is available for
induction, synchronous and wound rotor configurations.
The JKSSS7 series is available in the following en-
closed ratings:
600 & 720 Amps, 2300-4800 Volts, Up to 6,000 HP
Continuous Current
Short Circuit & Withstand Capability
Approximate Maximum Horsepower Based on Continuous Current
SOLID STATE STARTER
JKSSS7+ Series
Protective Features
Electronic Overload:
Retentive Thermal Memory w/Dynamic Reset Memory
Phase Imbalance/Single Phase
Short Circuit
Ground Fault - Optional
RTD Temperature
Phase Reversal/Phase Sequence
Overcurrent
Starts-per-Hour
Shorted SCR
Undercurrent/Loss of Load
Starter Overtemperature
Shorted SCR
Undervoltage
Overvoltage
Microprocessor Digital Control Unit (DCU) **
Programming Keypad:
Operator Control
System/Motor Protection
Serial Communication (RS485)
Statistical Data
LCD status and alarm display with Twelve LEDs
POWER - Indicates control power is present
RUN - Indicates unit/motor is running
ALARM - Lights in conjunction with AUX 2 to
indicate event or warn of possible critical condition
TRIP - Lights in conjunction with AUX 1 to
indicate a critical condition has occurred.
AUX 1-8 - Auxiliary unit relays
** Standard on all JKSSS4+ & JKSSS7+ models, 200-720A, 2300-6900V
Metering **
Percent of FLA
Phase Current (A, B & C)
Average Current
Ground Fault Current (w/Optional GF
Protection)
Remaining Thermal Register
Thermal Capacity to Start
Average Start Time
Average Start Current
Measured Capacity to Start
Time Since Last Start
Line Frequency
Phase Order
Motor RPM
kW, kVA, kVAR, PF, MWHr
kW Demand, kVA Demand, kVAR
Demand, Amps Demand - (All Date/
Time Stamped)
** Standard on all JKSSS4+ & JKSSS7+
models, 200-720A, 2300-6900V
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
Enclosure Type
Maximum Continuous
Amperes*
One-High Controller
Type 1 Ventilated 720
Type 1 Non-Ventilated 650
Type 12 & 3R 600
Interrupting
Capacity
(Symmetrical
Amperes)
Interrupting
Capacity
(Symmetrical
MVA)
Short Time
Capability
30 Seconds
(Amperes)
Short Time
Capability
1 Second
(Amperes)
Dielectric
Withstand
1 Minute
(kV)
Impulse
Voltage
Withstand
(kV)
50,000
@ 2.3 - 4.6 kV
200 @ 2.3 kV
350 @ 4.0 kV
400 @ 4.6 kV
4320 10,800
DC 19
60
Maximum Horsepower at Utilization Voltage
2300 Volts, 3 Phase 4200 Volts, 3 Phase
0.8 PF 1.0 PF 0.8 PF 1.0 PF
720 3000 3500 3000 5500 6000 5500
650 2750 3000 2750 5000 5500 5000
600 2500 2750 2500 4500 5000 4500
Enclosed
Maximum
Current
(Amperes)
Motors
Synchronous
Motors
Induction
Motors
Synchronous
Motors
(252 pages)
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