Production

name

Adjustable Resistor   Variable Resistor  Precision Resistor,Sliding Rheostat

Power rating

15W-20KW

Resistance value

0.01Ω-100KΩ

Resistance tolerance

0.1%, 0.5%, 1%, 5%, 10%

Features

1. Copper wire or chrominum alloy wire is wound on the ceramic tube coated with non-flammable resin,good dissipation ,high stability, and long life.

2.high power rating,high overload.

3.The DDR series own higher resistance value than the DQR series.

4.Widely used in power supply,transducer, elevator,arena audio and

Lifting,Braking,Ship ,Load equipment, high requirement equipment

industry,ect.

5.For customer specifications,can be made into mid-high class variable resistor(by hand).

Common

specification

50W20Ω,80W20Ω,100W20Ω,100W100Ω,150W10Ω,150W20Ω,200W20Ω,

200W200Ω,300W20Ω,300W150Ω,300W200Ω,400W150Ω,500W100Ω,

800W75Ω,1040W50Ω,1040W75Ω,2000W40Ω,2500W50Ω,3000W75Ωect.

Performance

Test item

Test  condition

performance

Temoerature

coefficient

JIS-C-5202  5-2

±350PPM/Max

Power rating

load

JIS-C-5202  5-4

40,power rating 1H

R≤±(1%+0.1Ω)Surface temperature ≤350

Short-term

overload

JIS-C-5202  5-5

1000% rated power 5s

Free or appearance or

structural irregularity

R≤±(2%+0.1Ω)

Insulation

resistance

JIS-C-5202  5-6   

1000V  DC  

100 MΩ Min

Dielectric

withstanding

voltage

JIS-C-5202  5-7   

1500V  DC  60s

Free or appearance or

structural irregularity

R≤±(0.1%+0.05Ω)

Vibration

JIS-C-5202  6-3

1.5mm,10-50-10Hz/min

Free or appearance or

structural irregularity

R≤±(1%+0.05Ω)

Thermal

shock

JIS-C-5202  7-3

Room temp 30 min ON-55

15 min OFF

Resistor free of structural irregularity crack of silicon cement surface

R≤±(2%+0.1Ω)

humidity

JIS-C-5202  7-5

40 90%RH 240H

Free or appearance or

structural irregularity

      R≤±(3%+0.1Ω)

Load life

JIS-C-5202  7-10

90Min ON-30Min OFF 500H

Free or appearance or

structural irregularity

Discoloration of marking

R≤±(3%+0.1Ω)

NOTE

1.     For customer specifications,please contact us to discuss the details.

2.     Different power rating owning multi weight ,dimension and packing .

3.     More details, please contact us.