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Toshiba's JK720 series complies with EEMAC,
NEMA, UL and CSA standards and is available in
non-reversing and reversing full voltage, autotrans-
former, reactor, multi-speed, synchronous and
wound rotor configurations. Latched contactors
are also available.
The JK720 series is available in the following
enclosed ratings:
720 amps
2300-4800 Volts
Up to 6,000 HP
Note: An Incoming Section is required for the JK720
FVNR, FVR and RVAT type starters, transformer
feeders and capacitor switching controllers.
Current Rating
* Actual limits based on your specific application parameters.
All specifications subject to change without notice.
Short Circuit & Withstand Capability
Application Table
For transformer and capacitor load switching applications, consult factory.
MEDIUM VOLTAGE CONTROLLERS
JK720 Series
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
A
C 13.25
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
Induction
Motors
Enclosed
Maximum
Continuous
Current
(Amperes)
Synchronous
Motors
Induction
Motors
Synchronous
Motors
Enclosure Type
Maximum Continuous
Amperes*
One-High Controller
Type 1 Ventilated 720
Type 1 Non-Ventilated 650
Type 12 & 3R 600