Current Limiting Reactor 21 uH, 700 Amps Continuous
P/N 18814CLR
The customer application is shown below. The CLR (current limiting reactor) consists of three gapped inductors inside one enclosure. The input power is 460 VAC, 3 PH, 60 Hz. Circuit breakers are supplied by the customer. A 5.5 volts drop is observed at 460 amps continuous current.
The Calculations of inductance value for 460 amps continuous and 58000 amps fault current are shown below:
Assuming 58000 Amps Fault Current, The Inductance Value is
- V = 2 x pi x F x L x I (Fault Current)
- L = 460 / (2 x pi x F x I (Fault Current))
- L= 460 / (2 x 3.142 x 60 x 58000) = 21 uH
Voltage Drop Across The CLR At 800 Amps Continuous Is
- V = 2 x pi x F x L x I (Continuous Current)
- V = 2 x 3.142 x 60 x (21 x 10-6) x 700
- V = 5.5 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 |
5.5 Volts | 700 Amps |
39.3 Volts | 5000 Amps |
78.6 Volts | 10000 Amps |
157.2 Volts | 20000 Amps |
235.8 Volts | 30000 Amps |
314.4 Volts | 40000 Amps |
393 Volts | 50000 Amps |
480 Volts | 58000 Amps |
A photo of the inductor is shown below. Three inductors are required per system:
Specifications:
- Gapped Inductor, P/N 19016L
- L (1, 2) = 21 uH ± 25 %, 700 Amps
- Copper winding construction
- Three inductor in one enclosure
- Copper bus bar: 3” x ⅜” with 2 holes.
- Indoor enclosure: 36”H x 28”W x 18”D
Three inductors are housed inside one enclosure. The photo of the enclosure is shown below:
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.