RARA HPS Series

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