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Control and protection switches丨Fire-fighting type
Overview
Improved control and protection switching appliances are a new category of products in the low-voltage electrical appliance industry. The category code is, which is the abbreviation of English control and protection switch electrical appliances.
The conforming standards "Low-voltage switchgear and control equipment, Part Multi-function Electrical Appliances, Section Control and Protection Switching Appliances" and "Low-voltage switchgear and control equipment, Multi-function Electrical Appliances, Control and Protection Switching Appliances" are equally adopted.
Function
The series of products adopts a modular single product structure, integrating traditional circuit breakers, fuses, contactors, overload or overcurrent, phase failure protection relays, starters, isolators, and comprehensive motor protection. The main functions of low-voltage electrical products such as generators are remote automatic control and local direct manual control, panel indication and electromechanical signal alarm functions, overvoltage and undervoltage protection, phase failure and phase loss protection, and undercurrent protection. Under-power function, with coordinated time current protection characteristics, four-stage protection characteristics of overload inverse time limit, definite time limit, short circuit instantaneous, and extra large short circuit instantaneous. By selecting functional modules or accessories as needed, you can control and protect various motor loads and distribution loads, integrating control and protection.
Control and protection switch fire-fighting type
Purpose
Control and protection switches are mainly used in power systems with AC, rated voltage from to, rated current from to, adjustable operating current from from, and control of motor power from Make, carry and break current under normal conditions including specified overload conditions, and be able to make, carry and break current under specified abnormal conditions such as short circuit.
Product advantages
Compared with systems composed of separate electrical appliances
Features of self-coordination of control and protection Series control and protection switching appliances integrate control and protection functions, equivalent to circuit breakers and fuses + 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.
It has unparalleled operating reliability and continuous operating performance of the system. It can be put into use without maintenance after breaking the short-circuit current, that is, it has continuous operating performance after breaking the short-circuit fault. After the breaking short-circuit current test is carried out, it can still be put into use. It has an electrical life of not less than 10 times, which is difficult to achieve by systems composed of separate components such as circuit breakers. This feature greatly improves the operational reliability and continuous operation of the system. Among them, the indicators are among the same kind. The product's international leading index is the highest domestically.
Energy-saving materials have the advantages of small size, less installation area, no separate component contacts, reduced circuit heating, energy saving and material saving.
Control and protection switch fire-fighting type
Compared with molded case circuit breaker
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 standard and economical. The breaking time under the expected short-circuit current is only ~, and the current-limiting coefficient reaches the leading level of molded case circuit breakers and 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 ~.
Compared with the protection system composed of plastic case circuit breaker, the thermal trip inverse time limit current and the magnetic tripping time limit current, which have the characteristics of adjustable protection setting current, can be adjusted on the panel, that is, in addition to the conventional In addition to the 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 for the distribution load is ~, and the adjustment range for the motor load is ~. 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.
Other features
Complete set of accessories: auxiliary contacts and signal alarm contacts, shunt release, remote re-release, door or drawer panel operating mechanism, control circuit conversion module, etc., which can be configured on a single product A complete control and protection unit realizes coordinated control and protection functions.
Flexible installation, horizontal installation, vertical installation and horizontal installation will not affect the performance. It can be widely used in compact complete sets, including fixed or drawer-type ones, which are used in / and / drawers. It has incomparable advantages that separate components cannot match.
The terminal blocks of the fully reliable protection level high-board front plug-in type rear panel wiring are all anti-touch functions. When equipped with a high protection level shell, it can be applied to wet places in civil buildings, basements, pump rooms, coal mines, ports, shipbuilding, petrochemical and other fields. It is an ideal product to replace the current electromagnetic starter protection type and combined starter.
Control and protection switch fire-fighting type
Complete product models and types
Basic control and protection switching appliances
Liquid crystal advanced control and protection switching appliances
Fire-fighting control and Protection switchgear
Isolation control and protection switchgear
Leakage control and protection switchgear
Communication control and protection switchgear
Two-speed control and protection switchgear
Three-speed control and protection switching appliances
Reversible control and protection switching appliances
Star-delta decompression starter
Self-coupling decompression starter
Resistance decompression starter
Control and protection switch fire-fighting type
Note
1. Under normal circumstances, when the rated current is below, the main frame is selected for the switch, and the main frame is selected for the switch. .
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. Two auxiliary contacts are normally open and one is normally closed.
Three auxiliary contacts are normally open and three are normally closed
5. For the rated operating current range of the overload electronic release, see the basic technical parameter table.
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 of the controlled motor ,Current and voltage.
If you have special requirements, please specify them in text. For example, auxiliary requirements, etc.
For details, please refer to our company's sample information
Control and protection switch fire-fighting type
Control and Protection switch fire-fighting type
Control and protection switch fire-fighting type
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