Current Limiting Reactor, 2400 Continuous Amps, 480 VAC L-L,
36000 Available Amps 10000 Fault Limit Amps, P/N KK-22
A current-limiting reactor is used when the prospective short-circuit current in a distribution or transmission system is calculated to exceed the interrupting rating of the associated switchgear. The inductive reactance is chosen to be low enough for an acceptable voltage drop during normal operation, but high enough to restrict a short circuit to the rating of the switchgear. The amount of protection that a current-limiting reactor offers depends upon the percentage increase in impedance that it provides for the system.
The main motive for using current-limiting reactors is to reduce short-circuit currents so that circuit breakers with lower short-circuit breaking capacity can be used. They can also be used to protect other system components from high current levels and to limit the inrush current when starting a large motor.
The customer application is shown below:
Current Limiting Reactor, Three Phase
Inductance Calculation
Specifications:
A. CLR, 2400 Amps continuous, 480 VAC L-L, P/N KK-22
B. Inductance value: 70 uH
C. Three inductor in one enclosure (68″H x 65″W x 44″D)
D. Copper windings
E. Approvals: none
F. Total system weight: 1200 lbs.
The detail of one Air Core Inductor, KK-22A is shown below. Three KK-22A are required for one CLR KK-22.
KK-22A. Three are required per system
Specifications:
- Air Core Inductor, P/N KK-22A
- L (1, 2) = 70 uH
- Continuous Current: 2400 Amps
- Frequency: 60 Hz
- Copper windings
- Approvals: None
- Copper bus bars are 4″ x 1/2″ thick with one hole
- One CLR consists of three air core inductors in one indoor enclosure
Three P/N KK-22A is housed inside an indoor enclosure as shown below.
The photo of the indoor enclosure is shown below:
Three Inductors in one enclosure
All our CLR’s are custom-built to order. To discuss your specific application, please call our phone number at (714) 624-4740, or send us an email at quote@lcmagnetics.com.