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Application: Power supply charging and discharging, inverter pre-charging, servo frequency conversion, lifting brake, centrifuge, tie-down machine, load test, elevator, dummy load, power aging test, wire drawing machine, robot, industrial automation and other mechanical and electrical equipment manufacturing.
Specification
| Model | RDDLZ-WWR-65 |
| Tolerance | ±5%, ±1% available |
| Max.Work Voltage | (P*R)1/2 V |
| Temperature Coefficient | 400 PPM/℃ |
| Short Time Overload | 5xPn (rated power) in 5 seconds |
| Dielectric Voltage | AC2.5kV/1min 50Hz |
| Insulation Resistance | DC500V, R≥100MΩ |
| Certification | CE, RoHS |
| Terminal Strength | 200N 30s, no damage |
| Operating Temperature Range | -25℃~+225℃ |
Derating Curve Diagram of Wire Wound Resistor
Temp. Rise Curve Diagram of Wire Wound Resistor
Tips: Physical concept of aluminum wire wound resistor.
Like other resistors, aluminum wire wound resistor in physics indicates the resistance magnitude of conductor to current flow. Resistance will cause the change of electron flux. The smaller the resistance, the greater the electron flux, and vice versa. For aluminum wire wound resistor, the resistance value is generally related to temperature, material, length and cross-sectional area. Temperature coefficient is a physical quantity to measure the influence of temperature on aluminum resistor. It is defined as the percentage change in resistance value for each 1℃ increase in temperature.
Aluminum wire wound resistors protect the machine from voltage rises in the DC bus. At the same time, the reduction in current causes engine to reduce speed, helps to brake the machine.