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High Power Rheostats

Rotary Variable Power Wire Wound Resistors

Heavy Duty Rheostat Load Boxes ( both Rotary and Slide type )

FVR, FVRB and DSR-WB series


  • High Power Rheostat Applications : Resistive Load simulation, heavy load machinery, Voltage and Current adjustment for Machinery & Equipment, Burn-in test loading and other general applications

  • High Power Rheostats : FVR

  • rated Power and rated resistance : 25W 50W 100W 300W and 500W

  • Rheostat doesn't have standard resistance value.

  • Rheostats are made according to customer's application need.

  • For parameters' determination, please click here.

  • Tandem mounted Rheostats : FVR

  • rated Power and rated resistance : 1000W, 1500W, 2000W, 2500W and 3KW

  • Rheostat is made according to customer's load current requirement.

  • Higher rated Power is possible, please contact us for detailsRotary

  • Rotary Rheostat Boxes / Heavy Duty Rheostat Boxes : FVRB :

  • Standard power range from 300W ~ 5kW

  • Resistance range is made according to customer's application need.

  • For some applications, power range can be up to 20kW

  • Options : Voltmeter, Ammeter, Thermal protection, Over-Current protection, Control Main Switch, Cooling System
     

  • Slide Rheostat with Handwheel : DSR-W :

  • support power up to 20kW
    This series bases on the DDR-F/DSR-F series power resistor with a Handwheel to adjust the resistance value.
    All Resistance values are made according to customer’s application need.
     

  • Adjustable Power Load Bank : 1-Phase DSR-WB / 3-Phase DSR3-WB

  • High Power Slide type Rheostat

  • This is made based on DSR-F series Power Wire Wound Resistor.

  • Standard power range for 1-Phase : 1kW - 50kW

  • Standard power range for 3-Pjhase : 3kW - 54kW

  • Resistance range is made according to customer's application need.

  • Support high load current requirement

  • Options : Voltmeter, Ammeter, Wattmeter, Ohm meter, Thermal and Over Current protection, Cooling System and Control Main Switch

  • Applications :

  • The function of a rheostat is to adjust the circuit current between the maximum current at the rheostat minimum resistance value to the minimum current at the rheostat rated resistance.

  • Motor speed control

  • Adjustable power load

  • Rated resistance value is made according to customer's need

  • Two rheostats with the same power rating doesn't mean they have the same maximum load current capacity.

  • For all FVR, FVRB and DSR-WB, please tell the followings :
    i) maximum Resistance and minimum Current
    ii) minimum Resistance and maximum Current
    iii) Voltage at minimum and maximum resistance

  • Different load currents and resistance ranges combinations need different resistance material to withstand the current and achieve the resistance value.

  • There is no standard rated resistance or resistance material that suitable for all applications even with the same rated power.

  • Rheostat rated Power = (Rheostat maximum load Current)2 x rated Resistance

  • In terms of Rated Power, a smaller Rated Resistance value means the rheostat can have larger Rated maximum Current capacity.

  • Please tell the best suitable resistance ranges that suitable for your application. All rheostats are made according to customer's application need.

  • There are more Note and Tips for application limitation and parameters determination at the application page.

  • Support High Load Current requirement

  • There are more Rheostats photos and Rheostat Boxes photos.

  • Rheostat Bank FVRB / Adjustable Load Bank DSR-WB options :

  • Ammeter, Voltmeter and Wattmeter

  • OverCurrent protection

  • Thermal protection

  • Cooling Fans system.

  • Prompt Delivery and e-mail us for pricing.

  • Support small quantity order and accept PayPal

FVR Rheostats : up to 500W

Power Watt Tolerance +/- % Dimensions in mm +/-3mm
D B L L1 d G
25W 5 <44 <50 <60 <25 6 2
50W <64 <70 <64
100W <84 <93 <66 <35 4
150W 10 <104 <120 <73 <35
300W <156 <170 <115 <55 10
500W <206 <215 <122 <65

Resistance and load current will be made according to customer's application need.

Rheostat sizes might be vary depend on resistance and load current.

 

Tandem mounted Rheostats : up to 3kW

Part Number Power Watt rated Resistance range ohm max. Temperature Dimensions in mm
min./OFF max. A D C B
FVR-500W/2 1000 0 5000 350C <215 <195 <218 <200
FVR-500W/3 1500 0 5000 <215 <195 <218 <300
FVR-500W/4 2000 0 5000 <215 <195 <218 <400
FVR-500W/5 2500 0 5000 <215 <195 <218 <500
FVR-500W/6 3000 0 5000 <215 <195 <218 <600

Resistance and load current will be made according to customer's application need.

Rheostat sizes might be vary depend on resistance and load current.

Rheostat Load Boxes : FVRB series : Power can be up to 20kW, depends on the resistance value and application.

Resistance and load current will be made according to customer's application need.

  W in mm D in mm H in mm
300W 220 240 150
500W 260 280 150
1000W 260 280 280
1500W 260 280 320
2000W 260 280 450
2500W 260 280 530
3000W 260 280 610
3500W 260 280 690
4000W 260 280 770

Load Box sizes might be vary depend on resistance and load current.

Power Slide Rheostat Load Banks : DSR-WB series :

Power can be up to 50kW, depends on the resistance value and application

- Support High Current up to 100A.

- Resistance and load current will be made according to customer's application need.

- Options : Main Control Switch, Over Current protection, Thermal protection, Meters.

Rated Power Max. Width mm Max. Depth mm Max. Height mm
1kW 430 210 320
2kW 610 210 320
3kW 710 210 320
4kW 530 260 370
5kW 610 310 370
6kW 710 310 370
10kW 780 410 370

Load Bank sizes might be vary depend on resistance and load current.

3-Phase Power Slide Rheostats Load Banks : DSR3-WB series :   

  

Existing is Three Phase asynchronous design.

If necessary we can support Synchronous requirement.

For some cases, can support Power up to 54kW and load Current up to 100A.

Please tell following parameters.

i) maximum Resistance and minimum Phase Current
ii) minimum Resistance and maximum Phase Current

iii) voltage (L-N or L-L) at minimum and maximum phase resistance

Resistance and load current will be made according to customer's application need.

- Options : Main Control Switch, Over Current protection, Thermal protection, Voltmeter, Ammeter, Power meter and Ohmmeter.

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