Zhejiang Shendun Electric Appliance Co

This series of products fills the gap in domestic control and protection switching appliances (equipment) and is a modular single product. It integrates the main functions of traditional circuit breakers (fuses), contactors, overload (or overcurrent phase failure) relays, starters, isolators, etc.
Functional distance automatic control and local direct human control function
Board indication and electromechanical signal alarm function
Under-voltage protection function
Phase loss protection function
Adjustment and coordination Time current protection characteristics (with inverse time limit and instantaneous three-stage protection characteristics)
Product model
Digital basic control and protection switching appliances
Liquid crystal advanced control and protection switching appliances
Fire control and protection switching appliances
Isolation type control and protection switching appliances
Leakage type control and protection switching appliances
Communication type control and protection switching appliances
Two-speed control and Protection switching appliances
Three-speed control and protection switching appliances
Reversible control and protection switching appliances
Star-delta decompression starter
Self-coupling decompression starter
Resistor voltage reducing starter
The series control and protection switching appliance integrates control and protection functions and is equivalent to a circuit breaker (fuse), contactor, overload relay auxiliary appliance. It well solves the problem of protection and control characteristic matching between components that cannot or is difficult to solve with separate components, making the protection and control characteristics more perfect and reasonable (it has inverse time limit and instantaneous three-stage protection characteristics as long as it is based on the load power or current You can correctly select a single product to replace the previous various electrical appliances from the power incoming end to the load end without reducing the capacity, which greatly reduces the designer's workload.
It has operational reliability and continuous operation performance of the system. It can be put into use without maintenance and has the continuous operation performance after breaking short-circuit fault. After the breaking short-circuit current test, it still has an electrical life of not less than 2 times. This is difficult to achieve in a system composed of separate components such as circuit breakers. The characteristics have greatly improved the operational reliability and continuous operation of the system. Among them, the index is the internationally leading and the highest domestic index for similar products.
Energy-saving and material-saving, small size, small installation area, no separate component contacts, reducing line heating. It has the advantages of saving energy and materials.
Compared with plastic case circuit breakers, it has the characteristics of high breaking capacity and short arcing distance. The short circuit breaking capacity reaches high during rated operation. The breaking type is the standard type and the economic type is under the expected short circuit current. The breaking time is only the current limiting coefficient reaching the leading level of the molded case circuit breaker and the current limiting level of the fuse, which greatly limits the dynamic thermal impact of the short-circuit current on the system. The arcing distance is only.
With protection settings Both the thermal trip (inverse time limit) current and the magnetic trip (definite time limit) current with adjustable current characteristics can be adjusted on the panel, that is, in addition to the conventional thermal protection current that can be set according to the load power, the overcurrent protection setting current It can also be adjusted on the panel (the adjustment range of the distribution load is 0.000000000000000000000000000-case circuit breaker). It overcomes the shortcoming that the user cannot adjust the short-circuit protection setting current of the molded case circuit breaker after leaving the factory
Working conditions
The upper limit value of ambient air temperature does not exceed ℃
The lower limit value does not exceed ℃
The daily average value does not exceed ℃
When the ambient air temperature exceeds the above range, special settings must be made at the factory
/> The altitude of the installation site does not exceed meters
Atmospheric conditions
The relative humidity of the atmosphere does not exceed the ambient air temperature of ℃. There can be higher
relative humidity at lower temperatures. Monthly average The average maximum relative humidity of the month when the minimum temperature is ℃ is that measures must be taken to prevent condensation on the product due to temperature changes
Pollution level
Installation category III (system) Category IV (system) < br/> The control power supply voltage should be within the fluctuation range of ()
Applicable places
Industrial facilities
Power distribution and motor protection and control systems in metallurgy, coal mines, steel, petrochemical ports, ships, railways and other fields
/> Motor control center, especially intelligent electronic control system or power distribution control and protection system requiring high rated operating breaking capacity
Single motor control and protection system
Power distribution center
Commercial and civil Facilities
Electrical control and protection systems such as lighting power conversion pumps, fans, air conditioners, firefighting lighting, etc. in modern buildings
Remote control lighting systems.
Hospital
Information processing center (bank, municipal securities trading center, etc.)
Telecommunications room
Commercial building (large shopping mall, supermarket, etc.)
Infrastructure
/> Port or railway system (airport, railway passenger transportation center, etc.)
Highway lighting or ventilation system
Military station control and protection system (such as border guard post radar station)
Fire protection system
Fire pumps and fans for various occasions
Precautions
Equipment installation requirements
To ensure the accuracy of the protection characteristics, the installation of connecting wires should comply with regulations. Before use, carefully check the coil voltage and accessory control power supply voltage. Correct and consistent to avoid damage. The operating knob should be able to operate normally. The electromagnet should attract the operating knob and turn it to the position where the electromagnet is released. Its mounting surface allows for left and right rotation relative to its axis.
If it is in the tripped state (both rotated in the position), the knob should be turned to the re-locked position and then turned to the position to achieve remote control.
It should not be exposed to wind and rain during transportation and storage before use. Place it in a warehouse where the daily average relative humidity is not greater than (at ℃, the ambient temperature is not higher than ℃ and not lower than ℃
Setting and operation
Before operation, the user should set the parameters for air parameter operation (in the motor When starting and running, pressing the setting key is invalid. Press the setting key to select the setting type. Press the shift key in sequence to select the data shift. Press the data key to modify the data. After setting a certain parameter, press the setting key to enter the next setting status value. Unnecessary options should be abandoned at the end. After setting all parameters, press the reset key to exit the setting state.