JUNXY series pure resistive load bank is a safe and simple way to provide loading test, commissioning test, aging test, acceptance test for UPS, generator, AC voltage regulator, transformer, PV inverter, EV charger, AC & DC converter, battery bank, rectifier, energy storage system, PDU & many more AC & DC source. Such AC & DC source must be load bank commissioning verified before they could be used for the entire backup power system, make sure the backup power system runs perfectly in case of any downtime.
A generator load bank test is a critical procedure used to ensure that a generator operates reliably and can handle its full load capacity. Here's what it involves: • Artificial Load: The test uses a load bank to apply an artificial electrical load to the generator, simulating the conditions it would encounter during actual use • Performance Verification: It verifies that all primary components of the generator set are in proper working condition • Operational Readiness: The test ensures the generator can operate at its maximum capacity for a specified period, which is essential for emergency or backup power systems • Preventative Maintenance: Regular load bank testing is part of a comprehensive preventative maintenance plan, helping to identify and fix issues before they become critical problems • Regulatory Compliance: For certain applications, such as healthcare or data centers, load bank testing may be mandated by regulations or industry standards Overall, generator load bank testing is a proactive measure to guarantee that backup power systems will function as expected during an outage or power failure, providing peace of mind and operational security.Load bank types:The pure resistive load bank includes 2 load types regarding its load voltage types: pure resistive 1phase & 3phase AC load bank & pure resistive DC load bank. Vertical cooling load bank or horizontal cooling load bank, outdoor type load bank and indoor type load bank designed according to the test site condition. The 3phase AC load bank could be by star connection or delta connection regarding the 3phase resistors connection configuration.
Load bank functions & protections:The pure resistive AC load bank outputs active load power only without the reactive power, The pure resistive AC load bank is capable to go by 3phase balance & unbalance loading test which meets clients’ different testing purpose. Load bank full power on/off is also a key function to test the power source on/off heavy load capability.
The pure resistive AC load bank digital meter testing each phase voltage, current, active power, power factor, reactive power & apparent power. The load bank load voltage & load current detected by the digital meter, and if the voltage & current exceed the preset value, the load bank digital meter will convert its NO contact to NC contact, activate the protection diagram, indicate over voltage/current alarm & protection with load removed automatically. A temperature sensor is also needed in case of load bank over temperature loading, to make sure the control system contactor, PLC, relay and its conducting wires always working in a good temperature condition.
It is very important to make sure fan always work normally to cool huge heat during loading test, so a digital meter to detect fan working voltage & current is needed. Alarm & load removed protection activated as soon as load bank fan low current and over voltage running.
Load bank fuse and circuit breaker protection is also essential for each load step, could provide the over current protection if any short circuit happens
Load bank control modes: The load bank has 2 control modes: either by local panel control or PC software remote control, 2 modes interlocked. The load bank communication by RS232, RS485, LAN, CAN. JUNXY series AC/DC load bank remote control communication protocol would be provided for clients’ integrating the load bank into the ATE system.
| Technical Specifications | |
| Model | JUNXY-AC480V-1250KW-R Resistive AC Load Bank |
| Load Element | Stainless steel resistors |
| Load Voltage | AC480V 3Phase 4Wire, 50/60Hz |
| Load Power | 1250KW for AC480V 3Phase 4Wire |
| Rated Load Steps
@AC480V |
1KW, 2KW*2, 5KW, 10KW, 20KW*2, 40KW, 50KW*3, 100KW*10(1KW-1250KW adjustable) |
| Power Factor | PF=1 |
| Load Accuracy | ±5% |
| Digital Meter | Voltage, Current, Power, Frequency and etc. |
| Power Supply | AC480V 3phase 4wire 50/60Hz
(Load bank fans & control power supply) |
| Control Mode | Manual control by push button |
| Wire Connections | Copper bus bar for wire connections |
| Insulation Class | F |
| Fan Noise | 90dB |
| Cooling Mode | Force-air VERTICAL cooling |
| Work Mode | Continuous work |
| Protections | Over voltage/current/temperature with load removed protection and alarming, emergency stop button, fan lack of air volume protection |
| Ambient Temperature | -10℃～+50℃ |
| Dimension | 1600*1850*2000mm(W*D*H) |
| Weight | Around 1.35T |
| Mobility | Stationary & moved by forklift pocket |
| Humidity | ≤95% |
| Altitude | ≤2500 meters |