AT series active power load device is a pure resistive load that converts electrical energy into heat, simulating actual active power consumption of electrical equipment. Main applications include:

Diesel/gas generator factory tests and periodic maintenance load bank tests

Transformer load loss measurement and temperature rise tests

UPS/EPS performance and aging tests

Variable frequency power supply, inverter and shore power supply load tests

Data center diesel generator load bank exercises

MV/LV distribution system active load simulation

EV charger and energy storage PCS active power tests

Marine, railway and mining mobile power station load tests

Pure resistive load: Power factor close to 1.0, truly simulates active power consumption

Multi-stage power adjustment: Multiple independent resistor units, individually switchable for step-by-step power adjustment

AC/DC options: AC type for 50/60Hz systems, DC type for DC power supply tests

High-quality resistor elements: Nickel-chrome alloy or stainless steel resistor strips, high temperature resistant, oxidation resistant, stable resistance

Efficient heat dissipation: Forced air cooling for high power, water cooling or container cooling for ultra-high power

Protective enclosure: Outdoor type with rainproof, dustproof and corrosion-resistant enclosure, IP54-IP65

Intelligent monitoring: Optional electrical parameter meters, temperature monitoring, remote communication (Modbus / IEC 61850)

Safety protection: Over-temperature, over-current, fan failure, phase loss protection and emergency stop

Generator factory test: Match tested unit rated power, commonly 110% overload for 1 hour

Data center diesel generator exercise: Choose continuous duty, outdoor protection, remote-controlled load bank

Transformer load loss measurement: Choose low-inductance resistive load with power factor close to 1.0

UPS/EPS aging test: Choose step-load device to test output characteristics at different load rates

Shore power supply test: Choose AC type matching ship shore power voltage

Ultra-high power application: Choose containerized water-cooled load for transport and outdoor installation

Frequent switching: Choose contactor or thyristor switching to improve service life