Portable Resistive Load Bank Ideal For Onsite Testing And Commissioning Of Electrical Power Sources Including Generators And UPS Systems

1. Flexible and precise power regulation

Total rated power: 200 kW; pure resistive load; power levels: 1 kW, 2 kW, 2 kW, 5 kW, 10 kW, 20 kW, 20 kW, 40 kW, 50 kW, 50 kW; level combinations are freely configurable; step resolution: 1 kW; supports fine-grained incremental loading and tuning.

Resistance accuracy: ±3%; equipped with high-quality, lightweight, high-power resistors; the overall power factor reaches up to 0.99; load operating conditions are stable.

2. Reliable hardware architecture and heat dissipation

Heat dissipation: A forced-air front-and-rear cooling system with an optimized heat dissipation duct layout, ensuring that no excessive heat buildup occurs even during prolonged full-load operation.

Machine Body: Overall dimensions: 800 × 700 × 1900 mm; Self-weight ≤ 150 kg; Equipped with universal casters at the bottom for easy mobility and relocation indoors; IP20 indoor protection rating; Computer-standard cabinet appearance.

Wiring: Main circuit copper busbar wiring and auxiliary power supply wiring terminals; all connections are secure and designed for high-current operating conditions.

3. Enhance the multi-layered security protection system

The system integrates a comprehensive protection mechanism covering overvoltage, overcurrent, high-temperature overheating, fan failure alarms, and emergency shutdown: in the event of fan stalling or chamber overtemperature, the system automatically reduces load or initiates shutdown; it also provides abnormal audible and visual alarms to prevent safety incidents such as dry burning or electrical breakdown; furthermore, the input voltage is limited to no more than 1.1 times the rated value, thereby preventing equipment damage caused by high-voltage surges.

4. Intuitive and stable control and monitoring capabilities

Local physical buttons for manual control; simple and easy to operate; no remote control functionality.

Provides real-time digital display of voltage, current, and power; measurement response accuracy: 0.5%FS; operational data is presented in an intuitive visual format.

Supports uninterrupted continuous online operation 24/7; the resistive design ensures a service life of up to 15 years; noise levels at a distance of 1 meter are <80 dB, and noise levels under standard data center operating conditions are well-controlled.

1. Acceptance testing and routine maintenance testing of diesel generator sets

Conducts factory acceptance testing of new units, on-site delivery with load verification, and periodic load-based maintenance of the generator set to resolve issues such as long-term unloading or light-load carbon buildup and incomplete combustion; tests the full-load output stability, voltage regulation and stabilization capability, overload protection, and voltage drop characteristics of the generator set.

2. UPS (Uninterruptible Power Supply) and Industrial Frequency Inverter Aging Test

Validation of high-power three-phase UPS systems, including full-load aging tests, switching performance, backup runtime duration, voltage regulation capability, and overload protection function; as well as endurance stress testing conducted under simulated actual field power load conditions.

3. Testing of Energy Storage PCS and Photovoltaic Grid-Connected Inverters

Energy storage converter full-power discharge test, overload capability verification, islanding prevention basic load simulation, grid-connected load-bearing stability test of photovoltaic inverters, efficiency measurement, and protection function verification

4. Acceptance of data center and IDC backup power supply systems

Conduct final acceptance testing for the backup diesel generator set in the computer room and the UPS power supply system, as well as regular load-bearing drills, to verify the reliability of the backup power switch-over and the system's sustained load-bearing capacity during a mains power outage.

Q1:During system boot-up, a high-temperature alarm triggers an automatic circuit breaker trip.

A:

Causes: Poor ventilation in the equipment room; air intake or exhaust vents blocked by debris; damaged fan failing to rotate; prolonged operation at power ratings exceeding the rated capacity; ambient temperature exceeding 50°C

Solution: Clear obstructions in the air ducts to ensure unobstructed airflow both forward and backward; inspect and replace faulty cooling fans; strictly adhere to a load capacity not exceeding 200 kW; install an outdoor exhaust system for cooling in high-temperature environments.

Q2: It is not possible to load only one phase; attempting to load a single phase will result in an error.

A: The hardware design of this device requires that the three phases must be subjected to synchronized balanced loading; it does not support single-phase unbalanced loading. When configuring the load, simply synchronize all three phase settings for the system to operate normally.

Q3: There is a slight discrepancy between the power display value and the theoretical power rating of the gear position.

A:The electrical resistance accuracy of ±3% corresponds to the factory standard tolerance and falls within the normal range; loose terminal connections or poor contact may also cause deviations in voltage drop and power readings; tightening the copper busbar connection screws will resolve this issue.

Q4: The fan does not start upon power-on; fan fault alarm triggered.

A:Check whether the auxiliary AC220V control power supply is properly connected; check if the fan's power supply line is loose; check if the fan's bearings are seized or the motor is damaged; troubleshoot the wiring or replace the cooling fan.