Product Overview
- 500 kW, three-phase AC resistive load bank (Model S 500 L) designed for outdoor use with a purpose-built canopy and IP54-rated control chamber.
- Rated for 400 VAC, 50 Hz, star (4‑wire) connection with 1 kW resolution and a multi-step configuration (1+2+2+5+10+10+20+50+100*4).
- Rugged carbon-steel powder-coated enclosure, portable on 4 universal casters; dimensions 1715 × 1261 × 1632 mm, weight ~850 kg.
Product Features
- High-resolution load stepping: 1 kW step resolution and defined step sizes for precise loading and step-load testing.
- Outdoor protection: canopy and IP54 rating for dust and splash resistance; rated to operate from -20°C to +60°C and up to 2,000 m altitude.
- Robust electrical design: copper busbars, resistive load elements, AC contactor switching, 700 VAC insulation test rating.
- Multiple control options: manual (toggle/push buttons), remote via PLC/software, and connectivity including fast connectors, grounding connections and RJ45.
- Built-in protections: thermal emergency cut-out, air-flow switch, fan overload protection, emergency stop; heavy-duty axial fans with horizontal airflow (~1250 CM/min).
Product Value
- Provides safe, repeatable and measurable loading to validate generators, UPS, inverters and power distribution before commissioning or after maintenance.
- Reduces commissioning risk and downtime by verifying equipment capacity, stability under step loads and cooling/distribution performance under realistic conditions.
- Supports compliance and performance testing for critical industries (data centers, marine, defense, renewables) to meet acceptance criteria and standards.
- Enables preventive maintenance (UPS discharge, battery/inverter checks) and grid/microgrid integration testing (absorbing excess power, demand response).
Product Advantages
- High power capacity (500 kW) with fine load control gives flexible, accurate test profiles from very low to full load.
- Weather-protected, transportable design for on-site outdoor testing without needing additional shelters.
- Multiple control and interface options streamline integration into existing test procedures and remote control environments.
- Strong safety and reliability features (thermal, fan, emergency stop protections) minimize risk during high-power testing.
- Manufacturer strengths: China-based Rata with an experienced technical team, factory quality control, competitive pricing and international sales/export experience.
Application Scenarios
- Generator testing: full-load verification, acceptance testing, stability during step-load changes.
- UPS and battery systems: discharge/autonomy tests, inverter capacity verification, preventive maintenance.
- Data centers and critical facilities: commissioning load simulation, utility-to-backup transfer testing, thermal and distribution validation.
- Renewable energy and microgrids: inverter performance testing, absorbing excess generation for grid stability.
- Marine, offshore and defense: onboard power system verification and compliance testing (DNV/ABS/Lloyd’s applicability).
- Factory testing and commissioning: engine/turbine/electrical system quality assurance prior to delivery.