I. Operation and principle of water choke tank
How it Works: A specially made lithium battery electrolyte is inserted into the motor rotor control loop of the winding motor as a resistor, and according to the adjustment of the concentration value of the lithium battery electrolyte and the change of the spacing between the two plates, the resistance of the series resistor takes into account the characteristics of the motor mechanical equipment during the whole start-up process. Thus, the motor can increase speed evenly and start stably under the condition of getting larger starting torque and less starting current. After starting, the electrical switch shorted the motor rotor control loop. Basic principle of operation: In addition to the re-closing of the motor high voltage switch cabinet, the water resistance cabinet receives the vacuum circuit breaker operation data signal, the moving pole plate runs from top to bottom, and the resistance value is slowly reduced within the set time, when the resistor is close to zero, the vacuum contactor installed in the water resistance cabinet is drawn, and the motor starts, after a few seconds, the moving pole plate is automatically calibrated to the initial situation. Wait for the next start. If the water block cabinet is started within the scheduled time, a common fault alarm system will be transmitted, and the high voltage switch cabinet will be automatically disconnected, and the motor will not lead the way.
Two, water resistance tank product specifications
The key of the liquid resistor starting cabinet consists of the following parts: Water storage tank, pole plate (split pole plate and static plate), transmission system organization, limit switch organization (limit switch) and related electrical components, such as automotive relays (or PLC), time relays, AC contactors, keys, display lights, etc., the key application, 3KV, 6KV, 10KV. Each rated voltage, output power range 200K7-8000KW winding communication AC asynchronous motor and bottom pressure squirrel cage communication AC asynchronous motor smooth soft start, compared with frequency sensitive resistor, soft starter, series reactor and other starting methods.
Three, water resistance tank performance characteristics
1, small starting current, smooth no impact, reliable operation of the power grid.
2, the starting current is less than 1.3 times the rated current.
3, can be started 10 20 times, especially suitable for heavy load start.
4, small impact on the power grid, no harmonic pollution.
5, start smoothly, effectively protect the motor and transmission machinery.
6, simple structure, easy installation and maintenance, high reliability.