I. Overview

ZW32-12/630-20 vacuum circuit breaker (outdoor high-voltage AC permanent magnet vacuum circuit breaker) (hereinafter referred to as the circuit breaker) is rated for electricity
Outdoor power distribution equipment with a voltage of 12KV and three-phase AC 50Hz. Mainly used for disconnecting and closing negative signals in power systems
Load current, overload current, and short-circuit current. Suitable for protection and control in power distribution systems of substations and industrial and mining enterprises
It is more suitable for rural power grids and places with frequent operations.
This installation and use manual specifies the main technical parameters, product structure, and operation of the circuit breaker
Principles and methods of installation, use, and maintenance.

2、 Model and name meaning

3、 Reference standards

GB3804-2003 High Voltage AC Circuit Breaker

GB3309-1989 Mechanical Testing of High Voltage Switchgear at Room Temperature

GB5582-1993 Pollution level of external insulation of high-voltage power equipment

GB/T11022-1999 Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards

DL/T402-2007 Technical Specifications for Ordering High Voltage AC Circuit Breakers

DL/T593-2006 Technical Guidelines for Shared Ordering of High Voltage Switchgear

JB3855-2008 General Technical Conditions for 10kV Indoor High Voltage Vacuum Circuit Breakers

4、 Environmental conditions for use

4.1 Surrounding air temperature: -45 ℃ to+40 ℃; Daily temperature difference: The daily variation is not greater than 25 ℃;

4.2 Altitude not exceeding 1000 meters, 2000 meters;

4.3 The wind speed shall not exceed 35m/s (equivalent to 700Pa on the surface of a cylinder);

4.4 The thickness of ice cover shall not exceed 10mm;

4.5 The sunshine intensity shall not exceed 1000W/m2;

4.6 The pollution level shall not exceed Grade IV of GB5582;

4.7 The seismic intensity shall not exceed magnitude 8;

4.8 Places without flammability, explosion hazard, chemical corrosion, and severe vibration;

4.9 If the product usage conditions exceed the above regulations, it shall be determined through consultation between the user and the manufacturer.

5、 Technical parameters and mechanical characteristics

5.1 Technical parameters are shown in Table 1:

5.2 Mechanical characteristic parameters are shown in Table 2.

5.2 Mechanical characteristic parameters are shown in Table 2.

5.3 The rated parameters of the isolation switch used with the circuit breaker are shown in Table 3.

The main technical parameters of the permanent magnet mechanism are shown in Table 4, and its wiring principle is shown in Figure 1.

6、 Structural characteristics

ZW32-12/630-20 vacuum circuit breakerIt consists of two parts: the circuit breaker body and the controller, and can also be equipped with isolation switches. circuit breaker
The structural form of the main body is a box mounted three-phase pillar type, mainly composed of a conductive arc extinguishing system, an insulation system, and a current interlocking system
It consists of six parts: sensor, transmission system, permanent magnet mechanism, and housing.

The external structure and installation dimensions of the circuit breaker are shown in Figure 1 and Figure 2.

The external PT appearance and installation dimensions are shown in Figure 3.

The appearance and installation dimensions of the permanent magnet controller are shown in Figure 4.



6.1 Circuit breakers equipped with vacuum arc extinguishing chambers have stable and reliable breaking performance, no combustion or explosion hazards, and are safe
Features such as maintenance free, small size, light weight, and long service life.

6.2 The circuit breaker adopts a fully enclosed structure with good sealing performance, which helps to improve the moisture-proof and anti condensation performance, and adapts to
Used in high temperature and humid areas.

6.3 The current transformer adopts an external current transformer, which can be installed in 2-3 sets, with 1-2 pieces per set, for protection
Protection and measurement. When the current ratio is between 150/5 and 1250/5, the measurement accuracy is level 0.5, the capacity is 10VA, and the protection accuracy is 10P10,
Capacity: 15VA.

6.4 The operating mechanism adopts a new CDY permanent magnet operating mechanism, which is installed inside the switch box and can effectively
Avoid corrosion of the switch mechanism caused by long-term outdoor environments. The operating mechanism is novel, simple, and reliable in action
Small in size and with a mechanical lifespan of over 10000 cycles.

The CDY type permanent magnet holding DC electromagnetic operating mechanism is a direct push, magnetic holding (locking) mechanism. The upper part of the institution is
The shaft output system consists of a handle and output shaft. The lower part is a permanent magnet drive system, consisting of permanent magnets, external magnetic yokes, and static magnets
Iron core, moving iron core, closing and opening coils, and manual tightening

The components of the emergency circuit breaker are composed of synchronous out of position double tapping, monostable state, permanent magnet, and electromagnetic composite structure.
The mechanism can be electrically opened, closed, and manually opened.

The 6.5 controller adopts the newly developed XY-V surge controller, with a service life of up to 20 years. (See Control for details)
User Manual

6.5.1 Eliminate misoperation caused by excitation inrush current during closing.

6.5.2 Eliminate misoperations caused by surge currents during operation.

6.5.3 It has overcurrent and quick break protection functions.

6.5.4 It has remote control function.

6.5.5 has remote control function.

6.5.6 It has a single coil permanent magnet circuit breaker control function and can directly perform opening and closing operations on the permanent magnet circuit breaker.
6.5.7 After the controller capacitor is fully charged, it can perform one "O-0.3s-CO" operation when the power supply disappears
Make it.

6.5.8 GSM, GPRS communication and backend monitoring and control functions. (Optional configuration)

6.6 The auxiliary switch has six pairs of normally open and normally closed auxiliary contacts.

6.7 Outdoor isolating switches and circuit breakers can be installed to form an integrated system, and the circuit breakers and isolating switches have reliable mechanical properties
Mechanical interlocking device.

7、 Working principle

7.1 Charging: After the switch is closed (opened), the closed (opened) capacitor has no power, and the controller will adjust the capacitor
Charging, if the fully charged time is less than the time specified in Table 1, it cannot be operated again during the charging process.

7.2 Closing: When the circuit breaker is in the open state, operate the controller's closing button or remote control closing button to close the circuit breaker
Connect the closing circuit, and the closing capacitor outputs a closing current to the permanent magnet mechanism's closing and opening coils. The closing and opening coils convert electromagnetic energy into kinetic energy of the iron core, which drives the main shaft to move. The four-bar linkage mechanism drives the insulation rod and vacuum arc extinguishing chamber to move
End, complete the closing operation. After the closing is in place, the magnetic force of the moving iron core and the static iron core of the permanent magnet mechanism is used to offset the overtravel
The force of the spring and the opening spring keeps the circuit breaker in the closed state.

7.3 Recloser Operation: When the circuit breaker is in the closed state and the closing capacitor is fully charged, it can achieve "opening -0.3s"
Close and open "one reclosing operation.

7.4 Opening operation: When the circuit breaker is in the closed state, pull the manual opening handle or operate the controller's opening button
Or remotely control the opening button, the controller connects the opening circuit, and the opening capacitor outputs the opening current to the permanent magnet mechanism for closing and opening
Coil, closing and opening coil converts electrical energy into a magnetic field to counteract the magnetic field of the permanent magnet mechanism. The main shaft is located in the overtravel spring and opening spring
Under the action of spring force, it moves and drives the insulation rod and the moving end of the vacuum arc extinguishing chamber through a four-bar linkage mechanism to complete the opening operation
Make it.

7.5 Overcurrent tripping process: When the controller detects that the secondary current passing through the current transformer reaches 5 ± 0.5A,
When the set delay time is reached, output the opening command to the closing and opening coils to complete the opening action.

8、 Installation, use, and maintenance

8.1 After opening the box, check whether the insulation straight tube of the circuit breaker is broken, and whether the product nameplate and certificate of conformity match the order
Is the packing list consistent with the actual product.

Before putting the circuit breaker into operation, the rated voltage and current of each operating component should be carefully checked against the actual situation
Is the situation consistent. Conduct trial operations using the closing and opening methods provided by the institution to check if all indicators are correct
Exactly.

8.3 The circuit breaker can be installed on a single pole or a double pole. The installation diagram is shown in Figure 5, Figure 6, Figure 7
Eight.

8.4 Circuit breakers, due to their special design structure, ensure long-term maintenance free use for users, requiring only about every three years
Perform a power frequency withstand voltage test on the right.

8.5 Users are not allowed to replace or use electrical components that are inconsistent with the original model specifications at will.

8.6 Operators should have a preliminary understanding of the performance, installation, adjustment, and maintenance knowledge of the mechanism, and should address any issues that arise during operation
Record it and notify the manufacturer if necessary.

9、 Transportation, acceptance and storage

9.1 Transportation

During transportation, the entire switch must be packed in a closed packaging box and secured. It must not be flipped or tilted during transportation,
Earthquake prevention measures need to be taken.


9.2 Acceptance

After receiving the circuit breaker, the user should perform the following tasks


9.2.1 Check if the packaging is damaged.

9.2.2 Check the completeness of documents, accessories, and spare parts against the product packing list.

9.2.3 Check whether the technical parameters and product certification on the circuit breaker nameplate meet the ordering requirements.

9.3 Storage

This circuit breaker should be stored indoors in a dry, ventilated, moisture-proof, and protected from harmful gases. Long term storage should be carried out regularly
Check if the environment meets the requirements. Packing, unpacking, and storage should be done indoors in a dry environment, and the products and their components should be stored in a dry place
Verify if it is complete and consistent.

10、 Ordering Notice

10.1 When placing an order, the model of the product should be specified (such as the rated current and rated short-circuit breaking current of the circuit breaker)
Whether equipped with isolation switch, whether equipped with current transformer and its quantity, auxiliary power supply method, etc.), name, quantity and location
The transformation ratio, accuracy, and capacity of the current transformer are required.

10.2 The user shall propose the installation method and select the corresponding fastening accessories.

10.3 Users can choose the corresponding functional configuration according to their usage requirements, such as the controller with GPRS function or other functions
User specified functionality.

11、 Factory documents

11.1 One copy of product qualification certificate.

11.2 One copy of the installation and use manual.

11.3 Packing list copy.

11.4 One factory inspection report.