Key Considerations for Purchasing a Resistive Load Bank

Firstly, clarify core technical parameters. The rated power must match the tested equipment, with a recommended 20% margin to avoid overloading. For power adjustment precision, step-type or continuously adjustable models are preferred to meet diverse testing requirements. The voltage adaptation range should align with the equipment's output level and support ±10% voltage fluctuation to ensure test stability. The resistance accuracy should be ≤±1% and the temperature coefficient ≤50ppm/℃ to minimize the impact of ambient temperature on data. Heat dissipation performance is crucial: air-cooled models (noise ≤75dB) are suitable for low-power applications, while water-cooled designs are recommended for high-power scenarios to ensure long-term full-load operation.

Secondly, adapt to the usage scenario. Portable models are ideal for low-power (≤10kW) testing due to their mobility; cabinet or modular products are recommended for medium to high-power (10kW-100kW) applications to support expansion; water-cooled or container-type models need to be customized for ultra-high-power (≥100kW) testing. Ordinary models suffice for basic load simulation, while intelligent models with PLC control are suitable for complex tests. For multi-purpose testing, resistive-inductive-capacitive composite products can be considered.

Thirdly, strictly control product quality and safety. Core resistors should preferably be made of nickel-chromium alloy, and electrical components should be from well-known brands such as Schneider. Multiple protections including overload, over-temperature, short-circuit, and over-voltage/under-voltage protection are essential. The shell should be made of rust-resistant materials with standardized wiring and reliable grounding.