Ws AC load includes single-phase AC load, three-phase AC load, RL resistive load, RLC resistive capacitive load, RCD nonlinear load and other series. The products are widely used in daily maintenance test, engineering acceptance, factory inspection test and product aging of all kinds of switching power supply, medium frequency aviation power supply and inverter. It can simulate the test process of starting characteristics, stability characteristics, transient characteristics and output parameters of pure resistive, inductive, capacitive and mixed loads, and detect the performance of AC power supply when connected to different loads. The optimized subsection type is adopted for power input to meet the needs of different loads and different power factors. Function introduction: 1. During the project acceptance of newly installed UPS equipment and generator set equipment, check whether the output power of ups and generator set equipment can meet the design requirements. 2. Routine maintenance and inspection of power supply equipment. 3. The user can set and adjust the discharge power, set the discharge time and timing time to automatically turn off the load according to the performance parameters and detection requirements. 4. The load power factor can be set to ± 0.3 ~ 1.0（ Resistive load and resistive capacitive load (optional) 5. RS485 communication interface and Modbus RTU standard communication protocol are configured for system integration. 4. After loading, the voltage, current, active power, reactive power, apparent power, power factor, frequency and other parameters of the equipment to be tested can be measured. 5. By controlling the load through computer software, automatic testing can be realized, and the test data can be displayed, recorded and managed（ (optional) 6. The test data can be saved in the software database, the historical test data can be queried at any time, exported to excel and other general format files, and printing is supported（ Optional). 7. The load has multiple protection functions such as overvoltage, overcurrent, overheating and fan abnormality. It can be unloaded automatically in case of danger. It can also be unloaded forcibly through manual emergency stop switch（ (optional) Application fields: Test the output power and load capacity of AC charging pile ups, generator set, AC power supply, microgrid, inverter and other AC equipment.
Product name	Ws-6300 series AC single-phase load box
model	WS-6305E	WS-6310		WS-6320E	WS-6330
Main technical indexes of load box
Rated voltage	AC 220V 50HZ(other voltage and frequency can be customized) Note: when the actual access voltage is lower than the rated voltage, the actual current and power will decrease in the same proportion.
Rated power	5KW	10KW		20KW	30KW
Maximum current	22A	45A		90A	136A
Minimum step	0.1KW	0.1KW		0.1KW	0.1KW
accuracy	≤1%F.S.	≤1%F.S.		≤1%F.S.	≤1%F.S.
control mode	Manual	Manual	Programmable	Manual	Manual	Programmable
Panel layout	power switch Power regulating switch Digital display instrument Buzzer	power switch Power regulating switch Digital display instrument Buzzer Emergency stop switch	power switch Local / remote transfer switch Digital display instrument Buzzer Emergency stop switch	power switch Power regulating switch Digital display instrument Buzzer Emergency stop switch	power switch Power regulating switchDigital display instrument Buzzer Emergency stop switch	power switch 10 Inch Touch Screen Local / remote transfer switchBuzzer Emergency stop switch RS485 communication interface
Communication protocol	NA	NA	Modbus RTU communication protocol	NA	NA	Modbus RTU communication protocol
Load mode	< constant resistance >	< constant resistance >	< constant resistance > < constant power > < constant current >	< constant resistance >	< constant resistance >	< constant resistance > < constant power > < constant current >
Data monitoring	Current, voltage, power, frequency
Voltage resolution	≤1%F.S.
Current resolution	≤1%F.S.
Protection function	Short circuit protection of working power supply Load overvoltage protection Fan interlock protection Fan fault protection Overtemperature protection PLC fault protection (programmable) Instrument fault protection (programmable)
Heat dissipation mode	Forced air cooling
Working power supply	AC 220V 50Hz
Installation mode	Indoor, 19 inch rack type	Indoor, mobile vertical cabinet type	Indoor, 19 inch rack type	Indoor, mobile vertical cabinet type	Indoor, mobile vertical cabinet type
Overall dimension	178-480-450mm Height * width * depth	450-450-330mm Height * width * depth	480-590-533mm Height * width * depth	850-580-700mm Height * width * depth	1200-620-700mm Height * width * depth
Equipment weight	20kg	55kg		85kg	100kg
Appearance color	Ral9003 white	Ral9003 white		Ral9003 white