Download PDF
Your contact: +1 (317) 899-1395 • info@reo-usa.com

REOHM R 151

Load- and discharge resistor, max. continuous power: 300 W

REOHM R 151

Unique Selling Point


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

Description


The charging resistor R 151 is a current limiting resistor for the charging and discharging of capacitors and limits, for example, the current flowing into the intermediate circuit capacitor inrush current. They are available as a braking resistor (BW Series) or as a charging resistor (Series R).

Typical Applications: 

  • Drive Technology
  • Wind power, solar energies
  • Railway engineering
  • Electromobility

 

Available as UL version

The profile resistors REOhm 151 are also UL-certified and have a power of 50 W up to 30 W (also as a combination).

Maximum energy with minimum space

  • 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 : 1.1 - 2000 Ohm
  • Continuous power : 50 - 300 W
  • max. operating voltage : 900 V

Circuit example

Your contact: +1 (317) 899-1395 • info@reo-usa.com

REOHM R 151

Load- and discharge resistor, max. continuous power: 300 W

Technical data

 

Type

Resistance values
R [Ohm]

Continuous output
[ W ]

max. operating voltage
U [ V ]

R 151 / 50

1.1 - 200

50

900

R 151 / 100

3 - 300

100

R 151 / 150

4 - 300

150

R 151 / 200

5-1,000

200

R 151 / 250

5-1,000

250

R 151 / 300

7-2,000

300

 

Higher power ratings on request

Note

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

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

Your contact: +1 (317) 899-1395 • info@reo-usa.com

REOHM R 151

Load- and discharge resistor, max. continuous power: 300 W

Dimension drawings

Dimensions

Type

B1 [mm]

B2 [mm]

H1 [mm]

L1 [mm]

L2 [mm]

L3 [mm]

D [mm]

Connections

R 151 / 50 /...

80

60

14

70

50

250

4.2

2 x AWG 18,UL 1659

R 151 / 100 /...

80

60

14

110

80

250

4.2

2 x AWG 18,UL 1659

R 151 / 150 /...

80

60

14

160

130

250

4.2

2 x AWG 18,UL 1659

R 151 / 200 /...

80

60

14

210-216

180

250

4.2

2 x AWG 18,UL 1659

R 151 / 250 /...

80

60

14

260

230

250

4.2

2 x AWG 18,UL 1659

R 151 / 300 /...

80

60

14

310

280

250

4.2

2 x AWG 18,UL 1659

Other mounting-variations possible as customization

Your contact: +1 (317) 899-1395 • info@reo-usa.com

REOHM R 151

Load- and discharge resistor, max. continuous power: 300 W

Surface temperature as a function of load

Surface temperature REOhm 151 / 100

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

 

Load diagram

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