AC Input Reactors


Eagtop AC Output ReactorAn AC Input reactor is installed at the input side of the variable frequency inverter, to reduce the inrush and peak current. Improve the power factor and input current waveform as well as suppressing the harmonics.

Their function is to reduce the current distortion caused by the input stage rectifiers by slowing the rate of change of current and thus charging the internal capacitor at a slower rate over a longer time.

Gator Products supplies standalone AC Input reactors from 1.5kW right up to 450kW.

 

More Information

If the supply is very low impedance the AC reactor will be required to limit current into the inverter; particularly the input rectifiers and capacitors. A low impedance supply is one where, when the inverter is running at full load, the voltage drop measured at the input terminals is one percent or less. If the short circuit current of the supply is 200 times greater than the full load input current of the inverter, the supply impedance is low. A low impedance supply will cause high currents to flow in the input rectifies and DC link capacitors, and may cause overheating.

If the supply is subject to transients, voltage peaks etc. The AC reactor will reduce these and protect the inverter from damage. Voltage surges and transients can be caused by power switching, lighting strikes, or badly regulated supplies. In an industrial installation, transients may be caused by old DC drives, welding equipment, load switching, and especially power factor correction equipment. The inverter is protected from transients internally, but where frequent transients of high energy are expected, an input AC reactor will limit the magnitude and energy adsorbed by the inverter.

Models

AC Input Reactor Model Power Size (kW) Maximum Amps
MCREACL0005EISC 1.5 5
MCREACL0007EISC 2.2 7
MCREACL0010EISC 4 10
MCREACL0015EISH 5.5 15
MCREACL0020EISH 7.5 20
MCREACL0030EISH 11 30
MCREACL0040EISH 15 40
MCREACL0050EISH 18.5 50
MCREACL0060EISH 22 60
MCREACL0080EISC 30 80
MCREACL0090EISC 37 90
MCREACL0120EISH 45 120
MCREACL0150EISH 55 150
MCREACL0200EISH 75 200
MCREACL0250EISH 90/110 250
MCREACL0290EISH 132 290
MCREACL0330EISH 160 330
MCREACL0490EISH 220 490
MCREACL0530EISH 250 530
MCREACL0600EISH 280 600
MCREACL0660EISH 300 660
MCREACL0800EISH 380 800
MCREACL1000EISH 450 1000

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