Power resistance and resistance box system solution providerManufacture of national brands of power resistors and resistor boxes

1. Product features:

1) High power, fast heat dissipation, impact resistance, high stability, high mechanical strength.

2) It has strong impact resistance, can brake frequently and instantaneously, and can load for a long time. The resistance value will not change too much, and the product consistency is high.

2. Product structure:

1) The high temperature resistant mullite ceramic tube is used as the resistance matrix, the high-quality alloy wire is evenly wound, and the outside is coated with non combustible insulating heat dissipation oil

Paint to protect, so that the resistance has a better appearance and heat dissipation effect, after natural drying, baking at different temperatures before assembly.

2) Different installation methods can be made according to customers' needs. One resistor can achieve multiple resistance values, and can be made into non inductive or adjustable mode.

3) Because of the flexible installation method, it is often used to assemble high-power resistance box or resistance cabinet, which is an ideal electronic component for load test.

4) It can be made according to customers' requirements.

3. Application fields:

Inverter, servo motor, servo driver, power load, elevator, lifting, medium frequency furnace, electric furnace, induction heating equipment industry, new energy vehicle manufacturing, wind power pitch system, wind power electronic control system and converter, solar photovoltaic inverter industry, small and medium-sized wind turbine (including grid connected / off grid type), medical equipment Machinery industry (such as paper machine), communication industry, rail transit, railway locomotive, aviation, shipping, military industry units, welding equipment, environmental protection equipment, power system, fan load, mining equipment, transformer, CNC machine tool, reactive power compensation device, laser industry, State Grid, engineering supporting, universities and Design Institutes.....

Test item

Test condition

Specifications

Resistance tolerance

JIS-C-5202 5-1

Resistance Nominal Tolerance 1≤R 1>R ±5%(J) ±10%(K)

Temperature 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 up ≤350℃ MAX

Short-term overload

JIS-C-5202 5-5, 1000% rated power 5 seconds

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, 2000V DC 1 minute

Free or appearance or structural irregularity 

△R/R≤±(0.1%+0.05Ω)

Terminal strength

JIS-C-5202 6-1 ASZ 8kg 30s, ASCB / ASC 5kg 10s

Free of appearance or structural irregularity

Vibration

JIS-C-5202 6-3 1.5mm,10-50-10Hz/min X-Y-Z 2 hours each

Free or appearance or structural irregularity
Surface coating crack△R≤±(1%+0.05Ω)

Thermal shock

JIS-C-5202 7-3 Room temp 30 minutes
ON-55℃ 15 minutes 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
Surface coating crack ΔR/R≤±(3%+0.1Ω)

 Load life

JIS-C-5202 7-10, 90Min ON-30Minutes OFF 500H

Free of appearance or structural irregularity
Discoloration of marking △R≤±(3%+0.1Ω)