The HPS high power precision 4-terminal shunt resistor series from RARA offers a power rating of up to 250W on a suitable heat sink, with a maximum current limit of 387A (resistance value of 1mΩ). The HPS series is available with resistance values from 1mΩ to 100mΩ, tolerance options as low as ±0.05% and a maximum TCR of ±5 ppm/°C. Excellent short stability as low as ≤±0.02% at maximum current load for 1 hour and long term stability of ≤±0.2% after 1,000 hours.
- 4-terminal shunt resistor
- Temperature range of -55°C up to +100°C
- Maximum rated power of 250W (≤ +60°C)
- Resistance options of 1mΩ, 2mΩ, 5mΩ, 10mΩ, 20mΩ, 50mΩ and 100mΩ
- Tolerances options of ±0.05% (A), ±0.1% (B), ±0.5% (D) and ±1% (F)
- Maximum working current of 387A at 1mΩ
- Dielectric withstanding voltage of 500V AC for 60 seconds at a maximum leakage current of 2mA
- TCR options of ±3 ppm/°C or ±5 ppm/°C
- Short-term stability ΔR ≤±0.02%, ≤±0.03%, ≤±0.05% or ≤±0.1% for 1 hour at terminal & copper flange temperature ≤+60°C
- Long-term Stability ΔR ≤±0.2% after 1,000 hours at terminal & copper flange temperature ≤+60°C
Typical applications for the HPS series include:
- Current sensing
- Battery management
- Charge/discharge test equipment
- Laboratory power supplies
RARA HPS Series Specification Table
Attributes | Value |
---|---|
Temperature range | -55°C to +100°C |
Rated power | 250W (on a suitable heatsink) |
Resistance values | 1mΩ / 2mΩ / 5mΩ / 10mΩ / 20mΩ / 50mΩ / 100mΩ |
Tolerance | ±0.05% (A) / ±0.1% (B) / ±0.5% (D) / ±1% (F) |
Maximum working current | 387A (at 1mΩ) |
TCR | ±3ppm/°C / ±5ppm/°C |
Dielectric withstanding voltage | 500V AC for 60s (Max. leakage current 2mA) |
Short-term stability | ΔR ≤±0.02% / ≤±0.03% / ≤±0.05% / ≤±0.1% (for 1hr at terminal & copper flange temperature ≤+60°C) |
Long-term stability | ΔR ≤±0.2% (after 1,000hrs at terminal & copper flange temperature ≤+60°C) |