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Line Reactor Sizing Procedure

Tech Tip
Line side of AC or DC Drive
  • What is the Voltage?
  • What is the Horsepower of the Drive?
Choosing the Impedance of the Line Reactor
  • 3% impedance reactor will absorb spikes and surges and prevent nuisance tripping of drives in most applications. A 3% impedance line reactor is typical for the line side of a drive.
  • 5% impedance reactor should be chosen if harmonic content is severe or customer wants to minimize harmonics to try to meet IEEE519 recommendations. There should be a note of caution: a voltage drop will occur equal to the impedance of the reactor. Therefore, a 5% reactor will cause a voltage drop of 5%. If your line voltage is low, a 3% impedance line reactor is recommended to minimize the occurrence of a low voltage situation. A 5% impedance line reactor is typical for the load side of a drive.
Select the Proper Line Reactor by using the Selector Chart
  • Find the Horsepower Rating that you are looking for along the top row of the selector chart (below).
  • Follow that column down until you meet the voltage/impedance combination you are looking for in the left column of the selector chart.
  • Reactor part number will be in that box.
  • Using the Specification Chart in the MTE Selector brochure, verify that the full load amperage of the circuit is within the fundamental range of the line reactor.
Load Side Reactors - AC Drives - (Reactors should not be used on the output of a DC Drive)
  • What is the Voltage?
  • What is the Horsepower of the Drive?
  • What is the motor lead length?
CAUTION - If motor lead length exceeds 15 feet, especially in low horsepower applications, an LC Filter should be considered as an alternative.
Select the Proper Line Reactor by using the Selector Chart  (5% impedance is typical)
  • Find the Horsepower Rating that you are looking for along the top row of the selector chart.
  • Follow that column down until you meet the voltage you are looking for at 5% impedance in the left column of the selector chart.
  • Reactor part number will be in that box.
  • Using the Specification Chart in the Selector brochure, verify that the full load amperage of the circuit is within the fundamental range of the line reactor.
3-Phase Reactors - Line/Load Selection Tables
Find required voltage in left column; choose impedance; follow row to right until desired HP found.
Ratings HP/kw 15/11 20/15 25/18.5 30/22 40/30 50/37.5 60/45 75/55 100/75
208 Volts 50/60 Hz 3%
Impedance
RL - 04501 RL - 05501 RL - 08001 RL - 10001 RL - 13001 RL - 16001 RL - 20001 RL - 25001 RL - 32001
5%
Impedance
RL - 04502 RL - 05502 RL - 08002 RL - 10002 RL - 13002 RL - 16002 RL - 20002 RL - 25002 RL - 32002
240 Volts 50/60 Hz 3%
Impedance
RL - 04501 RL - 05501 RL - 08001 RL - 08001 RL - 10001 RL - 13001 RL - 16001 RL - 20001 RL - 25001
5%
Impedance
RL - 04502 RL - 05502 RL - 08002 RL - 08002 RL - 10002 RL - 13002 RL - 16002 RL - 20002 RL - 25002
380 Volts 50/60 Hz 2%
Impedance
RL - 02501 RL - 03501 RL - 04501 RL - 04501 RL - 08001 RL - 08001 RL - 10001 RL - 10001 RL - 16001
4%
Impedance
RL - 02502 RL - 03502 RL - 04502 RL - 04502 RL - 08002 RL - 10002 RL - 10002 RL - 16002 RL - 20002
400 Volts 50/60 Hz 2%
Impedance
RL - 02501 RL - 03501 RL - 04501 RL - 04501 RL - 05501 RL - 08001 RL - 08001 RL - 10001 RL - 13001
4%
Impedance
RL - 02502 RL - 03502 RL - 04502 RL - 04502 RL - 05502 RL - 08002 RL - 08002 RL - 10002 RL - 13002
415 Volts50/60 Hz 2%
Impedance
RL - 02501 RL - 03501 RL - 04501 RL - 04501 RL - 05501 RL - 08001 RL - 08001 RL - 10001 RL - 13001
4%
Impedance
RL - 02502 RL - 03502 RL - 04502 RL - 04502 RL - 05502 RL - 08002 RL - 08002 RL - 10002 RL - 13002
480 Volts 50/60 Hz 3%
Impedance
RL - 02502 RL - 03502 RL - 04502 RL - 04502 RL - 05502 RL - 08002 RL - 08002 RL - 10002 RL - 12002
5%
Impedance
RL - 02503 RL - 03503 RL - 03503 RL - 04503 RL - 05503 RL - 08003 RL - 08003 RL - 10003 RL - 13003
600 Volts 50/60 Hz 3%
Impedance
RL - 01802 RL - 02502 RL - 02502 RL - 03502 RL - 04502 RL - 05502 RL - 08002 RL - 08002 RL - 10002
5%
Impedance
RL - 01803 RL - 02503 RL - 02503 RL - 03503 RL - 04503 RL - 05503 RL - 08003 RL - 08003 RL - 10003
600 Volts, 50/60 Hz (Open Type)
Ratings HP/kw 125/93 150/112 200/150 250/187 300/225 350/262 400/300 500/375 600/450 750/550
208 Volts 50/60 Hz 3%
Impedance
RL - 40001 RL - 50001 RL - 60001 RL - 75001            
5%
Impedance
RL - 40002 RL - 50002 RL - 60002 RL - 75002            
240 Volts 50/60 Hz 3%
Impedance
RL - 32001 RL - 40001 RL - 50001 RL - 60001 RL - 75001          
5%
Impedance
RL - 32002 RL - 40002 RL - 50002 RL - 60002 RL - 75002          
380 Volts50/60 Hz 2%
Impedance
RL - 20001 RL - 25001 RL - 32002 RL - 40001 RL - 40001 RL - 50001 RL - 60001 RL - 75002    
4%
Impedance
RL - 08002 RL - 25002 RL - 32003 RL - 40002 RL - 40002 RL - 50002 RL - 60002 RL - 75003    
400 Volts50/60 Hz 2%
Impedance
RL - 20002 RL - 25002 RL - 32002 RL - 32001 RL - 40001 RL - 50001 RL - 50002 RL - 75002    
4%
Impedance
RL - 20003 RL - 25003 RL - 32003 RL - 32002 RL - 40002 RL - 50002 RL - 60003 RL - 75003    
415 Volts50/60 Hz 2%
Impedance
RL - 20002 RL - 20002 RL - 25001 RL - 32001 RL - 40001 RL - 50001 RL - 50001 RL - 75002 RL - 75002  
4%
Impedance
RL - 20003 RL - 20003 RL - 25002 RL - 32002 RL - 40002 RL - 50002 RL - 50002 RL - 75003 RL - 75003  
480 Volts50/60 Hz 3%
Impedance
RL - 16002 RL - 20002 RL - 25002 RL - 32002 RL - 40002 RL - 50002 RL - 50002 RL - 60002 RL - 75002  
5%
Impedance
RL - 16003 RL - 20003 RL - 25003 RL - 32003 RL - 40003 RL - 50003 RL - 50003 RL - 60003 RL - 75003  
600 Volts50/60 Hz 3%
Impedance
RL -13002 RL -16002 RL - 20002 RL - 25002 RL - 32002 RL - 40002 RL - 40002 RL - 50002 RL - 60002 RL - 75002
5%
Impedance
RL - 13003 RL - 16003 RL - 20003 RL - 25003 RL - 32003 RL - 40003 RL - 40003 RL - 50003 RL - 60003 RL - 75003
    CONSULT FACTORY
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