Current Limiting Reactor 1500 Amps Continuous, 18.7 uH
P/N 19038CLR

The customer application is shown below. The CLR (current limiting reactor) consists of three gapped inductors inside one enclosure. The input power is 240 VAC, 3 PH, 60 Hz. Circuit breakers are supplied by the customer. A 10.6 volts drop is observed at 480 amps continuous current.

 

CLR, 1500 AMPS CONTINUOUS, FAULT CURRENT 34000 AMPS , P/N 19038CLR Schematic Diagram

 

The Calculations of inductance value for 240 amps continuous and 34000 amps fault current are shown below:

Assuming 34000 Amps Fault Current, The Inductance Value is

  • V = 2 x pi x F x L x I (Fault Current)
  • L = 240 / (2 x pi x F x I (Fault Current))
  • L= 240 / (2 x 3.142 x 60 x 34000) = 18.7 uH

Voltage Drop Across The CLR At 1500 Amps Continuous Is

  • V = 2 x pi x F x L x I (Continuous Current)
  • V = 2 x 3.142 x 60 x (18.7 x 10-6) x 1500
  • V = 10.6 Volts

The voltage drop across the CLR at different current levels is shown in Table A:

 

Table A

Voltage Drop Across The CLR Current Thru The CLR
10.6 Volts 1500 Amps
14.1 Volts 2000 Amps
21.2 Volts 3000 Amps
35.3 Volts 5000 Amps
70.6 Volts 10000 Amps
141.2 Volts 20000 Amps
212 Volts 30000 Amps
240 Volts 34000 Amps

 

A photo of the inductor is shown below. Three inductors are required per system:

 

CLR, 1500 AMPS CONTINUOUS, FAULT CURRENT 34000 AMPS , P/N 19038CLR

 

Specifications:

  • Gapped Inductor, P/N 19016L
  • L (1, 2) = 18.7 uH ± 25 %, 1500 Amps
  • Copper winding construction
  • Copper bus bar: 4” x 5” x 3/8” thick, 1 holes
  • Three inductor in one enclosure
  • Enclosure dimensions: 50”H x 36”W x 26”D

Three inductors are housed inside one enclosure. The photo of the enclosure is shown below:

 

CLR, 1500 AMPS CONTINUOUS, FAULT CURRENT 34000 AMPS , P/N 19038CLR

 

All our CLR’s are custom built to order. To discuss your specific application, please call our number at (714) 624-4740, or send us an email at quote@lcmagnetics.com.