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A Load Bank is a controllable artificial load device. It replaces actual electrical loads to perform load testing, performance verification and calibration for generators, UPS, inverters and batteries. It converts electrical energy into heat (or consumes reactive power) to accurately simulate real-site load operating conditions.
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.
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
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.
UPS & Inverter Test Power switching, backup duration, load capacity and harmonic suppression performance test.
Battery & Energy Storage Test Capacity test, discharge curve measurement, internal resistance analysis and BMS protection verification.
Offshore & Explosion-proof Application
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.
New Energy Industry Energy dissipation for wind & PV inverter, grid adaptability test.
6. Key Technical Parameters
Rated power (kW/kVA); rated voltage & frequency; adjustable power factor; step/continuous load regulation; measurement accuracy; air/water cooling; explosion-proof & ingress protection grade (Ex certification, IP65).
7.Summary
A Load Bank is a professional simulated load facility for power equipment. It can accurately test the load capacity, voltage/frequency stability, protection logic and paralleling performance of generators and power supplies without connecting real on-site loads, widely used in power generation, offshore engineering and data center industries.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2017
Total Annual:
>18
Employee Number:
100~500
Ecer Certification：
Verified Supplier
Reliable Power Solutions Expert.
KINGWAY GROUP has been deeply engaged in the power generation sector for over 20 years, standing as a high-tech enterprise integrating production, R&D, overseas sales, and after-sales services. The company boasts 18 patents covering various core technologie...
Reliable Power Solutions Expert.
KINGWAY GROUP has been deeply engaged in the power generation sector for over 20 years, standing as a high-tech enterprise integrating production, R&D, overseas sales, and after-sales services. The company boasts 18 patents covering various core technologie...
