Related content
- 2025-06-14Sunwin DC Charging Pile Test Device The new energy electric vehicle DC charging pile comprehensive test device is the core product of Sunwin in the field of DC charging pile testing. It, together with the three-phase programmable AC power supply and loadThe new energy electric vehicle DC charging pile comprehensive test device is the core product of Sunwin in the field of DC charging pile testing. It, together with the three-phase programmable AC power supply and load bank, constitutes the test system of the DC charger, which fully meets the test requirements of the DC charging pile.
- 2025-06-10Sunwin 1000KW Resistive Load BankIn the field of power equipment detection, precision and stability are eternal pursuits. Sunwin 1000KW resistive load bank, with excellent performance, innovative technology and reliable quality, brings you an unprecedented power detection experience and meets the diverse high-power detection needs!
- 2025-06-06Sunwin AC Charging Pile Test DeviceSunwin's AC charging pile test devices, such as the WN1000 series, are designed and manufactured in strict accordance with the national standards GB/T18487.1 - 2015 and GB/T 20234.2 - 2015. They have excellent performance and comprehensive functions, providing reliable guarantees for the quality inspection of AC charging piles.
- 2025-04-02Sunwin Charging ResistorPre-charging resistors are often used in specific aspects such as electronic devices, batteries, and inverters. For different devices, the working methods are not exactly the same, but the purpose is to avoid the large current of the charging power supply at the beginning of charging from causing possible damage or damage to the device.
Typical applications of load bank in power testing
1. Power generation equipment testing Generators (diesel/gasoline/gas generators):
Load capacity verification: Gradual test from no-load to rated load, detection of voltage, frequency stability and recovery characteristics.
Overload capacity test: Short-term overload (such as 110% rated load) to verify the response speed of the protection device.
Parallel operation test: When multiple generators are connected in parallel, power is distributed through the load bank to detect synchronization and load balancing capabilities.
New energy power generation (photovoltaic inverters, wind power converters): Simulate grid impedance characteristics to test the inverter's islanding effect protection, harmonic suppression capability and grid-connected stability.
2. Power system testing UPS (uninterruptible power supply):
Full load/half load test to evaluate battery life, voltage fluctuations at the moment of switching and recovery capabilities.
Load distribution balance test of redundant UPS systems.
Battery pack: Discharge test: Use constant current load bank to simulate real discharge scenarios, detect battery capacity, internal resistance and consistency, and avoid "false power" problems.
Switching power supply / DC power supply: Load adjustment rate test: Stability of output voltage when load changes (such as load jump from 0% to 100%).
3. Power grid and distribution system test
Substation / distribution transformer: No-load loss and load loss test (equivalent load method) to evaluate energy efficiency level.
Short-circuit impedance simulation to test the accuracy of the action threshold of the protection device.
Harmonics and power quality: Non-linear load bank (such as rectifier, inverter simulation) is used to test grid harmonic pollution and evaluate the filter effect.
4. Equipment aging and reliability test
Aging test: Run the power supply equipment at full load for a long time to expose early faults (such as poor heat dissipation and component aging).
Environmental adaptability: Use a temperature and humidity chamber to test the changes in load characteristics under high and low temperature and humid and hot environments.
Please give us a message
