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WHK Series Multifunctional Control Cabinet
Power range: 11-300KW
WHK-W, WHK-P series full-automatic liquid level pressure control cabinet: It is a combination of comprehensive protection part of peripheral operation mechanical motor and various other sensing devices. It is an economical and practical method for starting and stopping the pump motor based on power frequency. Control system for automatic, water supply equipment that is safe, reliable, and easy to maintain.
Various models in the series have functions such as main circuit short circuit, phase loss, overload, pump casing leakage of special pumps, over-temperature protection of stator windings, etc., which can cooperate with the efficient and reliable operation of water pumps.
WHKZ (XJ01) auto-coupling step-down starter control cabinet is our company's electrical control cabinet for pump products. In order to make the various pumps used by users work safely, reliably and efficiently, it can effectively protect the leakage of the pump motor, Over temperature, phase loss, short circuit, overload, water leakage, voltage drop, automatic start, switch, stop.
WHK-H series frequency conversion constant pressure water supply automatic control cabinet uses AC frequency conversion speed regulation technology and microcomputer detection and control technology, which are controlled by frequency converter (speed adjustment), programmable controller or intelligent frequency conversion constant speed water supply controller and The combination of the introduction of low-voltage electrical appliances, a new type of energy-saving water supply equipment for positioning the pump in the full flow range.
The control cabinet controls the output frequency of the inverter through the microcomputer based on the transient pressure of the system pipe network as a stable parameter (comparative positioning). Automatically track and adjust the speed of the pump; realize PID closed-loop adjustment of the water pressure of the system, thereby ensuring that the pressure at the end of the pipe network is constant, so that the entire water supply system continues to operate efficiently. When the water consumption is increased, the output frequency of the inverter becomes larger, the pump speed is increased, and the water supply is increased; when the water consumption is decreased, the inverter output frequency is decreased, the pump speed is slowed, and the water supply is reduced, ensuring that the user's Need for pressure and flow. The frequency conversion constant pressure water supply type is adopted, and it is not necessary to build a high-level water tank, a water tower, and the water quality is correspondingly less susceptible to secondary pollution.
The frequency conversion and constant pressure water supply method improves the water supply efficiency and water quality. It belongs to the new energy-saving technology promoted by the state and is an ideal modernized building.
WHK-H series variable frequency constant pressure water supply automatic control cabinets are produced and tested in accordance with "JB / T3009-93 Microcomputer Controlled Variable Frequency Speed Regulation Water Supply Equipment Standard" approved by the Ministry of Construction in 1994. Over the years, the products have won praise and trust from customers for their excellent performance, good technology and good service.
Conditions of Use:
1. Generally, the pump motor adopts the method of auto-transformer to reduce its starting current and reduce the impact of the power grid and equipment.
2. The equipment has a small starting current, but a large starting torque.
3. After the device is started for the second time (the total time for the second start cannot be greater than 120 seconds), the second start can be performed after 4 hours of cooling.
4. The equipment has a small investment, easy maintenance and installation, and easy access to spare parts.
1. The control cabinet is suitable for AC 50HZ (or 60HZ), voltage 380V, power 11-300KW
2. This equipment is mainly used in industrial, agricultural, and various water supply occasions.
3. This equipment is suitable for starting operation of various high-power water pump motors.
Structural characteristics and working principle:
1. Select Danfoss, ABB, Fuji, Sanken and other inverters;
2, digital PID adjustment, keyboard operation, digital display, fully automatic operation unattended;
3. The circuit design is concise and clear, and the thinking is clear, which is convenient for failure analysis and maintenance;
4. Excellent performance, flexible control methods, strong anti-interference ability, stable and reliable work;
5. Adjust the speed of the pump motor without loss: realize the stepless change between the water supply amount from zero to the maximum value of the system;
6. In the automatic state, the pump motor is automatically started. No impact on the power grid and pipe network, greatly extending the service life of pumps, motors, piping systems, and electrical control systems;
7. Manual and automatic control function settings can ensure the safe and continuous operation of the equipment;
8. The control is programmed, and a variety of control methods can be realized according to user requirements. Such as: timing switch system, fire-fighting linkage, small flow and zero flow automatic shutdown sleep, centralized management of the host computer.
9. Multiple pumps can be operated alternately and cyclically, and the service life of the pumps is balanced at the average working time of each pump, thereby avoiding the long-term non-operation of the standby pumps and rusting, and ensuring that the pumps can be put into operation smoothly when a fire occurs;
10. The basic control function is powerful and the optional additional functions are abundant. Such as: timing switch system, the pump is automatically changed. For small and zero flows