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
AC 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