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

REOHM series 154

Max. continous power: 200 W

REOHM series 154

Unique Selling Point


  • Small dimensions
  • Fast connection
  • Short-circuit proof
  • Matching to any frequency converter
  • Less additional mounting area 
  • Compact shape
  • High-resistance at overload
  • Vertical and horizontal installation

Description


The braking resistor REOHM 154 protects the machine from a voltage rise in the intermediate circuit, if an electric machine operates as a generator (Electromotive brake). The current reduces also the speed of the machine. 

The serie REOHM 154 is available as braking resistor (series BW) or as charging resistor (series R).

As 154 R (Charging resistor, damping resistor, filter resistance, etc.)

The charging resistor is a current limiting resistor for the charging and discharging of capacitors and limitates for example the current flowing into the intermediate circuit capacitor inrush current. For this the device must be designed for a high single pulse energy and nominal voltage. The inductance of the resistor contributes to limit the inrush current, so wirewound resistors are the right choice.

Typical Applications: 

  • Drive Technology
  • Renewable energy
  • Electromobility

 

Maximum energy with minimum space

  • The compact design enables the use in all applications where
    little space is available (for example in cabinet and frequency converter)
  • Unity-Version can be assem-bled as low-profile and upright
  • In case of failure of resistor, this will become highly resis-tive
  • 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 : 2,2 - 500 Ohm
  • Continuous power : 50 - 200 W
  • max. operating voltage : 900 V

Circuit example

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

REOHM series 154

Max. continous power: 200 W

Technical data

Type

Resistance value
R [Ohm]

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

max.
Operation voltage
U [ V ]

200K

250K

154 / 50

10 - 100

50

60

900

154 / 100

3 - 500

100

150

154 / 150

2,2 -160

120

160

154 / 200

5 - 200

140

180

154 / 250

5 - 250

160

200

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 series 154

Max. continous power: 200 W

Dimension drawings

Horizontal version Upright mounting
 



Dimensions

Type

B1
[mm]

H1
[mm]

L1
[mm]

L2
[mm]

L3
[mm]

L4
[mm]

D
[mm]

Connection wire

154 / 50

40

21

150

135

120

250

5,5

2 x AWG 14,UL 1659

154 / 100

40

21

170

155

140

250

5,5

2 x AWG 14,UL 1659

154 / 150

40

21

210

195

180

250

5,5

2 x AWG 14,UL 1659

154 / 200

40

21

250

235

220

250

5,5

2 x AWG 14,UL 1659

154 / 250

40

21

290

275

260

250

5,5

2 x AWG 14,UL 1659

Other fixing dimensions possible

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

REOHM series 154

Max. continous power: 200 W

Surface temperature in function of power

Surface temperature REOhm 154 / 100

Surface temperature REOhm 154 / 150

 


Surface temperature REOhm 154 / 200

 

Surface temperature REOhm 154 / 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 series 154

Max. continous power: 200 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.