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REOHM BW 152

Braking resistor, max. continous power: 330 W

REOHM BW 152

Unique Selling Point


  • Very flat and compact construction
  • Easy installation
  • Short-circuit proof
  • Suitable for the use with any frequency drive
  • Use even in rough conditions
  • Good heat dissipation, assembly on heat sink possible
  • Highly resistive on overload

Description


The braking resistor of the series REOHM 152 are mounted close to the frequency converter and they are designed for drives with frequency converters of small to medium output. The Series 152 is available as a braking resistor (BW Series) or as a charging resistor (Series R).

Typical Applications: 

  • Drive Technology
  • Renewable energy

  

Maximum energy with minimum space

  • This unit is very compact with high power
  • In case of failure of resistor, this will become highly resistive.
  • Suitable for IP20-IP54 applications
  • Test voltage: 2,5 kV AC (at 900 V rated voltage)

Optional

  • With temperature switch
  • Cover for protection against high surface temperatures


Technical Data


  • Resistance values : 3 - 620 Ohm
  • Continuous power : 120 - 330 W
  • max. operating voltage : 900 V

Circuit example

Your contact: +49 - 212 8804-0 • info@reo.de

REOHM BW 152

Braking resistor, max. continous power: 330 W

Technical data

Type

Restiance value
[Ohm]

with 25°C and surface
temperature of.../P [W]

max.
opersation voltage
[V]

200K

220K

152 / 100

10 - 620

120

160

900

152 / 150

12 - 500

150

200

152 / 200

20 - 350

200 280

152 / 250

3 – 430

250

330

Higher power ratings on request

 

 

 

Note

The ratings apply for 100 % duty cycle and free access and exit of cooling air.

In general: Is the ambient temperature higher than 40 °C, the continuous power must be reduced by 5 % per 10 K temperature rise.

Your contact: +49 - 212 8804-0 • info@reo.de

REOHM BW 152

Braking resistor, max. continous power: 330 W

Dimension drawings



Dimensions

Type

B1
[mm]

B2
[mm]

H1
[mm]

L1
[mm]

L2
[mm]

L3
[mm]

D
[mm]

Connection wire

152 / 100

100

84

14

100

70

250

4,2

2 x AWG 18,UL 1659

152 / 150

100

84

14

150

120

250

4,2

2 x AWG 18,UL 1659

152 / 200

100

84

14

200

170

250

4,2

2 x AWG 18,UL 1659

152 / 250

100

84

14

250

220

250

4,2

2 x AWG 18,UL 1659

Other fixing dimensions possible

Your contact: +49 - 212 8804-0 • info@reo.de

REOHM BW 152

Braking resistor, max. continous power: 330 W

Surface temperature in function of power

Surface temperature REOhm 152 / 100

Surface temperature REOhm 152 / 150

 


Surface temperature REOhm 152 / 200

 

Surface temperature REOhm 152 / 250

 

Surface temperature increase, even over temperature, describes the increase in surface temperature when loaded.

 

Your contact: +49 - 212 8804-0 • info@reo.de

REOHM BW 152

Braking resistor, max. continous power: 330 W

Load diagram 

The power ratings apply for continuous duty. The power ratings can be increased in short-time operation in function of duty cycle by multiplication with the relevant factor from the diagram below or according to the formula as follows.