Product brand: Wanzhou
Manufacturer: Wanzhou Electric
WYQ Series liquid resistance starter
■ Scope of application
Applicable to three-phase AC 50Hz, rated working voltage 380V~10kV, rated power 75kW~10000kW wound AC asynchronous Motor Heavy load smooth soft start, especially for industrial and mining enterprises with unstable or low grid voltage.
■ working principle
In the rotor circuit of the controlled winding motor, the specially prepared electrolyte is used as the resistance in series, and the resistance value of the series resistance is always satisfied during the starting process by adjusting the concentration of the electrolyte and changing the distance between the two compare plates electric machinery The requirements of mechanical characteristics on the value of series resistance enable the motor to speed up evenly and start smoothly under the condition of obtaining larger starting torque and smaller starting current. End of starting, electrical switch Short circuit the rotor circuit.
■ Main performance characteristics
Soft start, small starting current: Iq ≤ 1.3Ie (A);
The starting temperature rise of the motor is reduced, and the service life of the motor is effectively extended;
The starting process is smooth mechanical equipment No impact;
It can start 5-10 times continuously, and the starting performance is better than that of frequency sensitive starter;
Low requirements for the power grid, which will not produce harmonics and affect the power grid;
Reliable and simple structure, convenient installation and maintenance;
Good versatility, suitable for soft starting of winding motor under any load condition, especially for heavy load starting;
It has multiple protection functions such as starting timeout, voltage loss, overtravel, overtemperature, etc;
When it is used in northern cold regions, the equipment has its own electric heating function.
■ Main technical parameters
Starting starting current: Iq ≤ 1.3Ie (A);
Starting time: 10~60s, preset, adjustable on site;
Number of starts: 5~10 consecutive starts;
Normal working temperature of electrohydraulic system: 5~70 ℃;
Enclosure protection grade: IP20, IP30.
■ Compliance with standards
Low voltage switchgear and control equipment: GB7521.1-1997 IEC439-1: 1992;
WYQ liquid resistance starter: Q/XWZ2-2000.
■ Environmental conditions for use
Ambient temperature: - 40~50 ℃;
Relative humidity: ≤ 90%;
Altitude: ≤ 2000m (those above 2000m can be specially designed according to specific working conditions);
The ground inclination is not more than 5 °;
The installation site shall be free from fire, explosion, chemical corrosion and severe vibration;
Note: If there are special use conditions, please declare and negotiate with the manufacturer when ordering.
■ Ordering Instructions
Please provide the following information when ordering:
Motor model, rated power, rated rotor current, rotor voltage, rated speed;
Load characteristics of motor driving (operating condition description);
Cabinet surface color;
If users have special requirements, please negotiate with our company to order.
