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Circuit board, Suzhou Philchuangneng double-layer good single-layer difference produced in Liushi
Internal copper material, red copper, good brass or even iron difference
Silver The ones ordered from our company contain silver and are thick
Plastics are divided into new materials and recycled materials
Control and insurance Zhongkai Kaibao Xinling control and protection switch electrical appliances Guojia Ouyi manufacturer direct sales price control and insurance Jiangsu Yuantai Jiangsu Kailong Shanghai Jiayi Basic Fire Isolation Pressure Reducing Resistor Star-Delta Leakage
Mainly used in power systems from AC rated voltage to rated current, capable of making, carrying and breaking under normal conditions including specified operating overloads Current under normal conditions, and can connect, carry and break current under specified abnormal conditions, such as short-circuit current.
Compared with the system composed of separate electrical appliances
It has the characteristics of self-coordination of control and protection. The series of control and protection switching appliances integrate control and protection functions, which is equivalent to circuit breaker, fuse + contactor + overload relay. +Auxiliary electrical appliances. 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. There is no need to reduce the capacity, which greatly reduces the designer's workload.
丨 Price 丨 Supplier 丨 Fan 丨 Fire protection The continuous operation performance still has an electrical life of no less than 10 times after the short-circuit current breaking test. This is difficult to achieve in a system composed of separate components such as circuit breakers. This feature greatly improves the operational reliability of the system. and the continuous operation of the system, among which the indicators are among the internationally leading and domestically highest indicators for similar products.
Energy-saving materials have the advantages of small size, less installation area, no separate component contacts, reduced circuit heating, energy saving and material saving.
Compared with plastic case circuit breakers
It has the characteristics of high breaking capacity and short arcing distance. When the rated operating short-circuit breaking capacity reaches high, the breaking type is the standard type and the economical type, breaking under the expected short-circuit current. The time is only ~, the current limiting coefficient reaches the lower level, reaches the leading level of molded case circuit breakers, and reaches the current limiting level of fuses, which greatly limits the dynamic thermal impact of short-circuit current on the system. The arcing distance is only ~.
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Compared with the protection system composed of molded case circuit breaker, it has the characteristics of adjustable protection setting current, thermal tripping inverse time current and magnetic tripping fixed time The current can be adjusted on the panel, that is, in addition to the conventional thermal protection current that can be adjusted according to the load power, the overcurrent protection setting current can also be adjusted on the panel. The adjustment range of the distribution load is ~, and the adjustment range of the motor load is For ~. It overcomes the disadvantage that the short-circuit protection setting current of the molded case circuit breaker cannot be adjusted by the user after leaving the factory, so that even if the product is installed at the end of the line and the short-circuit current is small, it still has a good short-circuit protection function.
Compared with the performance of contactors, it has the characteristics of long life and convenient operation
The mechanical life is up to 10,000 times, and the electrical life is 10,000 times. It can be operated manually on site or realize remote automatic control. Function. The advanced separation design of the contacts and the electromagnetic system is adopted, which effectively suppresses the secondary bounce of the contacts, greatly improves the electrical life of the product, and is especially suitable for severe occasions such as heavy-load starting.
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Note
1. Under normal circumstances, when the rated current is below the switch selects the main frame, ~ the switch selects the main frame, the following can also be used Main body frame.
2. The basic configuration of the switch is the switch body + electronic overload release + short circuit alarm contact + overload alarm contact type: fire alarm contact + auxiliary contact, two normally open and one normally closed.
3. Please determine the design or adjust the setting current according to the actual load capacity and power.
4. One auxiliary contact is normally open and the other is normally closed.
Three auxiliary contacts are normally open and two are normally closed
5. For the rated operating current range of the overload electronic release, see the basic technical parameter table.
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Product complete model and type
Series product basic model
Series digital fire control and protection switch electrical appliances
Series isolation type Control and protection switching appliances
Product multi-function combination device model
Two-speed control and protection switching appliances
Three-speed control and protection switching appliances
Reversible control and protection switching appliances
Star-delta pressure reducing starter
Starter
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Ordering Instructions
When ordering, users need to provide the following information
Detailed description of the model such as control and protection switch, frame level current, main body rated current, auxiliary
Provide the power, current and voltage of the controlled motor.
If you have special requirements, please specify them in text. For example, auxiliary requirements, etc.
How to judge whether the control and protection switch you bought is a high-quality product
Look at the appearance of the mold, whether there are burrs, the size of the gap, etc. If a product even has problems with its appearance mold engraving, what can make us believe that the parts inside are of high quality
Main control module
The main control module is the soul component of the entire product! The commonly used circuit boards are produced in Yangzhou, Jiangsu. However, in order to save costs, some manufacturers use main control modules made locally in Liushi, resulting in extremely harsh control accuracy and control environment. It makes the product unstable and causes the product to trip for no reason
The identification is very simple. Friends who have the conditions can dismantle the casing to see whether the circuit board is single layer or double layer. The single layer is inferior. The more accessories on the circuit board, the better. Of course, this is only identified with the naked eye, and the performance needs to be tested on the inspection bench
Contact silver point content
The silver point used in the national standard is pure silver with a silver content. The silver content of our silver points is pure silver. Silver
With the naked eye, you can only see the thickness and gloss of the silver dots! Weighing is possible
if conditions permit. Warranty time
The current national warranty time is one month. If a manufacturer can provide free replacements and unconditional returns every month, then it is trustworthy. Those that cannot be achieved are basically inferior products, that is, the manufacturer promises a one-month warranty, and then various problems arise, time and cost for replacement. 丨 Price 丨 Supplier 丨 Fan 丨 Fire protection
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