Prove the performance, don't assume it
A generator set that has never run at full load has never been tested. Load banks apply a precise, controllable, repeatable electrical load so that the real performance of a generator — voltage regulation, frequency stability, temperature rise and fuel consumption — can be measured rather than assumed.
Cunmi supplies resistive and capacitive load banks for factory testing, site commissioning and periodic verification of standby plant, with particular focus on data centres and factories. Every load bank is available with automatic stepping, programmable load profiles and data logging for test reports.
Load bank product family
| Product Type | Capacity | Power Factor Range | Typical Application |
|---|---|---|---|
| Resistive | To 1,000 kW per unit | Unity | Commissioning and periodic testing |
| Capacitive | Configured per project | Leading | Power-factor and data-centre testing |
| Combined resistive / capacitive | Configured per project | 0.8 lagging to unity | Full load-bank commissioning |
| Containerised | Multi-unit packages | Unity | Data centres, factories, rental fleets |
| Trailer-mounted | To 1,000 kW | Unity | Mobile service and rental fleets |
General technical specification
Exact ratings are configured per project. The table lists the standard parameter envelope of the Cunmi load bank range.
| Capacity | To 1,000 kW per unit, paralleled for higher ratings |
|---|---|
| Voltage | 400 V – 11 kV, 50 Hz / 60 Hz |
| Load steps | 1 kW minimum resolution |
| Control | Manual, automatic ramp, programmable profile |
| Cooling | Forced air, horizontal discharge |
| Protection | Over-temperature, air-flow, phase imbalance |
| Enclosure | IP23 indoor / IP54 containerised |
| Instrumentation | Power analyser with harmonic measurement |
| Data logging | USB, Ethernet, Modbus TCP |
| Compliance | IEC 60947, ISO 8528 verification |
Where load banks are used
发电机组出厂测试
验证发电机在额定负载下的稳态与瞬态性能
数据中心调试
验证发电机在额定负载下的稳态与瞬态性能
医院应急测试
验证发电机在额定负载下的稳态与瞬态性能
船舶发电机调试
验证发电机在额定负载下的稳态与瞬态性能
UPS 系统验证
验证发电机在额定负载下的稳态与瞬态性能
租赁机组检测
验证发电机在额定负载下的稳态与瞬态性能
Load bank in operation
Need a load bank for commissioning?
Tell us the generator rating, voltage and the tests you need to perform. We will specify the load bank capacity, step resolution and control interface.