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R4-30A03

by Powerohm 

Catalog ID: R4-30A03

AC variable frequency drives are commonly used with a general purpose AC induction motor to form a reliable variable speed drive system. For applications that require faster deceleration rates, or where motor speeds are exceeding the synchronous speed set by the output frequency of the drive ( an overhauling load condition), a braking resistor is required. Braking resistors increase the braking torque capability of a variable frequency drive, producing faster and more controlled braking. The resistor dissipates regenerated power to keep the bus voltage from exceeding the rated limit of the drive. Standard units include resistors installed in a screened enclosure with a galvanized finish. Units are furnished with resistors wired to a terminal block with high temperature silicone or Teflon wire. Refer to the Enclosure Section of the catalog for enclosure details and finish options.

  • The resistor dissipates regenerated power to keep the bus voltage from exceeding the rated limit of the drive
  • Provide Controlled Braking

Resistance Tolerance: +/- 10%

Product Details

General

Application Powerohm
Available Options Mill Galvanized
Braking Torque 100 %
Duty Cycling 30 %
Enclosure Style NEMA 1
Enclosure Type GCE18
Horsepower - Maximum 30
Nominal Current (A) 22371
Resistance Ohms 25 Ohm
System Voltage 460 V
Type R4 Braking Resistor

Dimensions

Depth 10 in
Length 26.375 in
Width 10 in