Universal Circuit Breaker CW3 Series Instruction Manual

Overview of CW3 Series Universal Circuit Breaker

This type of circuit breaker is widely used and can be applied to AC400V and 690V. At the same time, it is also the first in the industry to launch a universal circuit breaker with a maximum rated current of 7400A, and the derivative product CW3G isolating switch can be used for AC and DC, and its DC voltage can reach 1000V, so it can be said to be very special in the field of photovoltaic power generation. Suitable for.

The universal circuit breaker CW3 series also has two special circuit breakers of TH type and HU type, which can meet the requirements of use in humid tropical areas and the use requirements of AC1100V and 800V high-voltage places.

Generally speaking, the universal circuit breaker CW3 series is small in size and high in performance. It adopts an integrated design of electric energy detection and protection and control to make the function as perfect as possible. Another is to advocate the new concept of circuit breakers , to achieve rated short-time withstand capacity Icw = rated operating short-circuit breaking capacity Ics = rated ultimate short-circuit breaking capacity Icu, which is to completely realize the full current range selective protection, while also improving the universal circuit breaker The reliability of the device in operation. The breaking capacity parameters of the circuit breaker are as follows:

1. Rated ultimate short-circuit breaking capacity Icu: 400V specification (65kA to 150kA), 440V specification (50kA to 120kA), and 690V specification (42kA to 100kA), 800V/1140V (50kA).

2. Rated short-circuit breaking capacity Ics: 400V specification (50kA to 150kA), 440V specification (50kA to 120kA), and 690V specification (42kA to 100kA), 800V/1140V (50kA).

3. Rated short-time withstand current capability Icw: 400V specification (42kA to 135kA), 440V specification (42kA to 120kA), and 690V specification (42kA to 100kA), 800V/1140V (50kA).

The CW3 series of universal circuit breakers can be configured with different intelligent controllers, which can realize more abundant power parameter detection (including harmonic, power and electrical energy data display). The measurement accuracy is high and can meet the requirements of monitoring level. Universal circuit breakers are equipped with a variety of curve protection features, which can provide corresponding protection functions for different applications.

Model meaning of universal circuit breaker CW3 series

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Use conditions of universal circuit breaker CW3 series

◆The ambient air temperature range of the installation and use environment should be between -5℃ and +40℃.

◆The altitude of the installation site shall not exceed two kilometers.

◆The relative humidity of the air should not exceed 50% when the highest temperature is +40℃. If it is in a lower temperature environment, a higher relative humidity can be allowed.

◆The pollution level is 3, suitable for electromagnetic environment A.

◆The installation category of the main circuit of the universal circuit breaker CW3 series is IV, and the installation category of the remaining auxiliary circuits and control circuits is III.

◆The vertical inclination angle of equipment installation cannot exceed 5°. When it is installed in the cabinet and the door frame is installed, its protection level can reach IP40.

◆Storage conditions The ambient air temperature range is -25℃ to +70℃.

Technical parameters of universal circuit breaker CW3 series

The main technical parameters of circuit breaker models CW3-1000 and 1600 are shown in the figure below.

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The main technical parameters of circuit breaker models CW3-2500 and 4000 are shown in the figure below.

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The main technical parameters of circuit breaker models CW3-6300 and 7400 are shown in the figure below.

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Universal Circuit Breaker CW3 Series Intelligent Controller

◆EN35 type (Type EN35)

◆EN36 type (Type EN36)

◆Type EA35 (Type EA35)

◆Type EA36 (Type EA36)

◆ER35 enhanced (Type ER35)

◆ER36 enhanced (Type ER36)

◆EP35 type (Type EP35)

◆EP36 type (Type EP36)

◆EQ35 type (Type EQ35)

◆EQ36 type (Type EQ36)

◆EG35 generator protection type (Type EG35)

◆EG36 generator protection type (Type EG36)

Structure composition of universal circuit breaker CW3 series

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1. Nameplate; 2. Energy storage release indication; 3. Closing button; 4. Trademark; 5. Manual energy storage handle; 6. Secondary circuit terminal; 7. Circuit breaker "opening" locking device; 8. Trip indication and reset button; 9. Intelligent controller; 10. Opening button; 11. Indication of closing "I" and opening "O"; 12. Indicate "OK" when the closing is ready; 13. Drawer type Safety padlock device for universal circuit breaker "separation" position; 14. Withdrawable universal circuit breaker "separation", "test" and "connection" three-position unlocking switch; 15. Withdrawable universal circuit breaker rocker working hole; 16. Drawer type Universal circuit breaker "separation", "test" and "connection" three position indication; 17. Drawer type universal circuit breaker rocker storage hole.

Note:

1. "Separation" indicates that the main circuit and the secondary circuit are both isolated; "Test" indicates that the main circuit is isolated and the secondary circuit is connected; "Connected" indicates that the main circuit and the secondary circuit are both connected.

2. When the Changshu universal circuit breaker body is shaken to the "disconnected" or "tested" or "connected" position, it will be automatically locked (the rocker cannot be shaken anymore), and it can be unlocked by moving the "unlocking switch" to the left.

◆The drawer seat structure of the drawer type universal circuit breaker is shown in the figure below. It has a baffle to isolate the main circuit busbar, which plays a safety protection role when the circuit breaker is pulled out.

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18.Mounting hole; 19. Safety baffle; 20. Secondary circuit terminal; 21. Side plate.

Universal circuit breaker CW3 series secondary circuit wiring diagram

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The above is the instruction manual of the universal circuit breaker CW3 series, I hope it can help everyone. You can log in to the okplazas.com motor mall to view the product information of circuit breakers. Welcome to email: [email protected] for consultation, and you can also contact WeChat customer service online at +86-13689242098 for product consultation!