Product Description

RH type coating wire-wound resistor is a power type wire-wound resistor. The product adopts corrugated resistance alloy tape to be wound on the ceramic skeleton in the form of side standing. , The resistor has the characteristics of high power, strong resistance and easy installation.

Application

1. As a braking resistor to protect the inverter, servo, etc. from the harm of motor regenerative power

2. As a resistive load in the power electronic load test

3. Used as sampling resistor, current limiting resistor, starting resistor and protection resistor in power electronic equipment

Technical Specifications

• 1. Resistance and resistance tolerance: 1Ω≤R ±5% (J), 1Ω>R ±10% (K)

  2. Rated load: maximum surface temperature: 50~200W ≤275℃,>200W ≤350℃

  3. Short-time overload: no visible damage, ΔR≤±(5%R+0.05Ω) 10 times 5s

  4. Insulation resistance: R≥100MΩ 1min DC 1000V

  5. Withstand voltage: no visible damage, no arcing breakdown ΔR≤±(0.1%R+0.05) AC 3000V 5S

  6. Resistance temperature characteristics: ±260PPM/℃ (less than 5Ω, no detection is required)

  7. Terminal strength: no looseness or mechanical damage 45N 30S

• 8. Resistance body strength: no visible damage 200N 30S

  9. Vibration resistance: no visible damage, ΔR≤±(0.1%R+0.05Ω) f:5-200Hz a=1g X.Y.Z 2h each

  10. Heat resistance: no obvious discoloration and damage except the terminal, the mark is clear 350℃ 2hours

  11. Thermal shock: no visible mechanical damage, 15 minutes at -55°C after rated load for 30 minutes

  12. Moisture resistance: no visible damage, clear signs, ΔR≤±(5%R+0.05Ω), insulation resistance≥10MΩ DC100 40℃ 95%RH 500hours

  13. Durability (rated load): no visible damage to the appearance, clear signs, ΔR≤±(5%R±0.05Ω) 100% load 0