LSK electric power frequency pump control cabinet is assembled according to electrical wiring requirements of switchgear, measuring instruments, protective appliances and auxiliary equipment in closed or semi-closed metal cabinets or screen, the layout should meet the requirements of the normal operation of the power system, easy maintenance, does not endanger the person And the surrounding equipment safety. In normal operation, the circuit can be switched on or off by manual or automatic switch. Fault or abnormal operation with the protection of electrical cut off the circuit or alarm. By measuring instruments can display a variety of parameters in operation, but also to adjust some of the electrical parameters, deviation from the normal state of work for the prompt or signal. Commonly used in the hair, with substations.
purpose
High-rise buildings, urban residential areas, enterprises and institutions of life, fire water; oil and oil terminals long-distance pipeline between the pressure transmission system; all kinds of water works and secondary booster pumping station constant pressure water supply; sewage treatment Factories, airports, farmland irrigation and drainage (sprinkler irrigation station); industrial booster regulator system, hot water supply system; hotels, restaurants 24 hours supply of hot and cold water; air conditioning cooling water temperature and temperature control; city square music fountain automatic control .
Conditions of Use
Power requirements 380V 10%; 50HZ 5%, altitude less than or equal to 2000 meters, the ambient temperature is less than 40 ºC No explosion of dangerous medium, enough to corrode the metal box damp insulation of the damp gas and dust, the monthly average maximum humidity of less than or equal to 90%; 25 ºC, vertical installation slope less than or equal to 5%, vibration less than or equal to 0.6G.
Structure
Control cabinet structure is divided into the main loop part, control loop part, external attachment part
Main circuit: refers to the power input through the circuit breaker, contactor main contact, thermal relay main circuit to the output terminal (connected to the motor) circuit.
Control circuit: from the signal received to complete the contactor connected or disconnected control circuit, protection circuit and display circuit.
External accessories: liquid level, float switch, pressure switch, pressure gauge contacts, temperature control, etc., in order to achieve automatic work of the signal components.
Installation and commissioning precautions
Before wiring check internal components for damage, off, loose.
After checking the correct wiring according to the instruction manual of the control cabinet, connect the power cord, grounding wire and signal wire correctly, and the wire head must be crimped securely.
Do not connect the pump motor to load simulation test before commissioning. If the contactor action and panel instructions are correct, connect the motor cable.
Adjust the thermal relay protection settings, before starting to determine the pump steering, everything is correct to test run.
Use ammeter or clamp meter to validate the working current, the current of each line should be basically equal.
parameter
X-type | XP-type | |||||
Start directly | single pump | 2pump | 3pump | single pump | 2pump | 3pump |
Y-△Buck start | ||||||
Self-buck start | ||||||
Electronic soft start |
G/K-type | Q-type | |||||
Start directly | single pump | 2pump | 3pump | single pump | 2pump | 3pump |
Y-△Buck start | ||||||
Self-buck start | ||||||
Electronic soft start |
The company has a sound product quality and service system.Satified pre-sale technical advice (including special design)and excellent and efficient afer-sales service is LSK electronic control cabinet credibility guarantee.