Portable Resistive Load Bank High Precision Compact Design

1. Definition

2. Working Principle

• Resistive Type (Most Common): Electric current passes through power resistors and converts energy into heat via Joule effect, cooled by forced air or water cooling; Power Factor = 1.0.
• Inductive Type: Inductive coils consume reactive power to simulate motor and transformer loads with lagging power factor.
• Capacitive Type: Capacitors provide capacitive reactive power for power compensation and filtering simulation with 超前 leading power factor.
• Combined RLC Type: Integrated resistive, inductive and capacitive loads with adjustable power factor (0.1–1.0) to simulate complex working conditions.

3. Main Structure

• Load components: Resistor / inductor / capacitor modules
• Control system: Manual / PLC / remote control, step & continuous load adjustment
• Measuring instruments: Voltage, current, frequency, power, power factor and temperature monitoring
• Cooling system: Forced air cooling (portable type) / water cooling (high power & long-time operation)
• Protection functions: Over-current, over-temperature, phase loss, short circuit and emergency stop

4. Classification

• By load characteristic: Resistive, inductive, capacitive, combined RLC
• By voltage level: Low voltage (400V/690V), medium & high voltage (3kV/6kV/10kV)
• By installation: Portable / trailer-mounted, skid-mounted / fixed type
• By function: AC type, DC type, harmonic simulation type, intelligent programmable type

5. Main Applications

1. EDG / MTG Generator Testing
   Full-load & step load transient test; verify frequency and voltage transient response; long-term full-load endurance test for temperature rise, fuel consumption and protection setting calibration; paralleling and load sharing test.
2. UPS & Inverter Test
   Power switching, backup duration, load capacity and harmonic suppression performance test.
3. Battery & Energy Storage Test
   Capacity test, discharge curve measurement, internal resistance analysis and BMS protection verification.
4. Offshore & Explosion-proof Application
5. Explosion-proof load bank with Ex'e, Zone 2, IIA T3, IP65 for outdoor skid-mounted EDG/MTG regular load maintenance, avoiding carbon deposition and wet cylinder caused by no-load or light-load operation.
6. New Energy Industry
   Energy dissipation for wind & PV inverter, grid adaptability test.

6. Key Technical Parameters

7.Summary