JUNXY-AC415V-105KW-R 3Phase Unbalance Test Load Bank

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The load bank is expecially designed for ac source 3phase unbalance power loading test, UPS unbalance load bank aging test

What is the pure resistive AC & DC load bank?

Load bank applications:

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.

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-AC415V-105KW-R AC Load Bank
Load Element Stainless steel resistors
Rated Voltage  

AC415V 3 Phase 4 Wire

AC240V single phase

Rated Power 105KW for AC415V 3 Phase 4 Wire

35KW for AC240V single phase

Load Steps 1KW, 2KW, 4KW, 8KW, 10KW*2 Per Phase
Load Power Adjustment Manual control by push buttons: Any combinations of load steps to have load power up to 35KW per phase
Power Factor PF=1.0
Load Accuracy ±5%
Display Voltage & Current displayed by digital meter
Mains Voltage 240 50HZ, single phase
Wire Connections A, B, C & N
Insulation Class F
Protection Level IP20(indoor use
Fan Noise 75dB
Cooling Mode Force-air cooling
Work Mode Continuous work
Protections Overheating/Buzzer alarm,

Over heating/current/voltage protection,

Ambient Temperature -10℃+50℃
Mobility Four wheels, lifting rings in chassis top
Humidity ≤95%
Altitude ≤2500 meters