1. Overview

VS1-12 / 630-20 vacuum circuit breaker (indoor high voltage vacuum circuit breaker) (hereinafter referred to as circuit breaker) is three-phase AC 50Hz, rated voltage is 7.2-12 kV power system indoor high voltage switchgear, as the power grid Equipment, industrial and mining enterprises power equipment protection and control unit, can be used for frequent operation of the place. With the ability to repeatedly break and fast reclosing.
VS1-12 / 630-20 vacuum circuit breaker with the operating mechanism and the circuit breaker body design, can be used as a fixed installation unit, can also be used with the chassis car for a separate hand car.

2. The product model and meaning

3. The product based on standards

Circuit breaker in line with GB1984-1989 "AC high voltage circuit breaker", JB3855-1996 "3.6-40.5KV indoor exchange high voltage vacuum circuit breaker", DL403-1933 "10-3521KV indoor high voltage vacuum circuit breaker ordering technical conditions" standard requirements, And comply with the relevant requirements of IEC56 (87 publications).

4. The use of environmental conditions

A) Ambient temperature
Maximum temperature: + 40 ℃:
Minimum temperature: -15 ℃;

B) Ambient humidity:
Daily average relative humidity: ≤ 95%;
Monthly average relative humidity: ≤90%;
Daily average vapor pressure: ≤2.2 × MPa;
Monthly average vapor pressure: ≤ 1.8 × MPa;

C) altitude; no more than 1500m;
D) Seismic intensity: no more than 8 degrees;
E) use of the place without dripping, no flammable and explosive hazards, no chemical corrosive gases and no severe vibration.

5. Technical data

5.1 circuit breaker main technical parameters in Table 1.

Note: When the rated breaking current does not exceed 40KA, θ = 0.3s
When the rated breaking current exceeds 40KA, θ = 180s
5.2 circuit breaker mechanical characteristics of the parameters in Table 2.

6. Product structure and working principle

6.1 Body structure The main part of the circuit breaker is set in the epoxy resin insulated tube made by APG process. This structure can effectively prevent the influence of external factors including external force impact, pollution environment and so on to the vacuum interrupter. The circuit breaker main body is mounted on the rear of the circuit breaker frame and is connected with the operating mechanism as a whole.
Circuit breaker in the closing position of the main circuit current path: (see Figure 2)
The upper outlet 27 is softened to the lower stent 30 to the lower outlet 31 via a bracket 26 fixed to the arc extinguishing chamber to the internal static contact of the vacuum interrupter, a movable contact and a conductive clip coupled thereto.
Circuit breaker factory are equipped with all kinds of current levels are dustproof insulation cover, in the actual use, rated current 1250A and below the level of operation may not have to take, eh your current 1600A and above must be removed when running.
6.2 operating mechanism (see Figure 1, Figure 2)
Figure 1 circuit breaker operating mechanism diagram

Figure 2 internal structure of the circuit breaker

The operating mechanism is a spring energy storage operation mechanism, the circuit breaker frame is equipped with a closing unit, one or several open-type electromagnets composed of the opening unit, auxiliary switch, indicating device and other components: front with a split button, manual storage Can operate holes, spring energy storage status signs, points and other signs.

6.2.1 Energy storage
The energy required to close the circuit breaker is provided by the closing spring energy storage. The energy storage can be done by an external power supply motor, or it can be done manually using the energy storage handle.
Energy storage operation: by the energy storage motor 16 fixed on the frame or the storage handle into the manual storage air counterclockwise rotation. During the electric energy storage, the chain rotation system (14, 23, 18) is driven by the motor output shaft 15, and the sprocket rotation system is driven by the turbine and the worm (11.13) during manual energy storage. When the sprocket 23 is rotated, the pin 2 pushes the slider 4 on the wheel 6 to follow the rotation of the storage shaft 7 and draw the closing spring through the arms 5 and 21 for energy storage. When the energy storage position is reached, the stop lever on the frame 3 depresses the slider 4 from the storage shaft and the sprocket rotation system. The energy storage retains the base 9 against the roller 8 to keep the storage position while the storage shaft Pull the display of the "stored energy" mark and switch the auxiliary switch to cut off the energy supply of the energy storage motor, then the circuit breaker is in the ready state of closing.

6.2.2 closing
In the closing operation, regardless of the hand by pressing the "closing" button or remote operation so that the closing electromagnet action, can make the energy storage shaft 19 rotation, so that the child 9 release roller 8, closing spring contraction (34, 36, 37, 38, 39) drives the insulating tie rod 33 and the movable contact into the closing position, and the cam lever 5, 21 rotates the energy storage 7 and the cam 22 on the shaft Compress the contact spring 32 to maintain the contact pressure required for the contact.
After the closing action is completed, the closing and holding of the sub-ring 38 and the semi-axis 41 remain in the closed position, while the energy storage indicator, energy storage auxiliary switch reset motor power supply circuit connected. If the external power supply is also connected again into the energy storage state, connecting rod 44 pull the / sub-signs, display "together" mark, turn the link to pull the main auxiliary switch switch.
When the circuit breaker is in the closed state or the use of locking device without the use of locking device unlocking and hand-car circuit breaker in the advance and exit process, can not be closed.

6.2.3 opening
You can press the "sub-gate" button, but also reliably turn on the external power supply so that the sub-gate switch or over-current release solenoid operation to keep the sub-sub-41 and semi-axis 41 to unlock the lock to achieve the opening operation. And the energy stored by the contact spring and the sub-gate spring 35 separates the interrupter 28 from moving. In the latter part of the process, the hydraulic buffer absorbs the residual energy during the opening process and limits the opening position.
By the link 44 pull the / minute indicator shows the "minute" mark, while pulling the counter. To achieve the counter count, driven by the drive connecting rod auxiliary switch switch.

6.3 anti-error interlock.
The circuit breaker can provide perfect anti-misoperation action.
6.3.1 After the circuit breaker closing operation is completed, close the interlocking bending plate 1 to move down to hold the cooperative bending plate 2 on the closing and holding shaft, and will not be able to be closed again when the circuit breaker is not opened.
6.3.2 circuit breaker in the closing after the end of how the electrical signal is not removed in time, the circuit breaker inside the anti-jump control circuit will cut off the closing on multiple reclosing. (Optional)
6.3.3 Hand-crank circuit breaker When the test position or working position is not reached, the pin 4 of the closing plate 2 is buckled by the interlocking plate 3, and the closing circuit is cut off to prevent the circuit breaker from closing Load area.
6.3.4 Hand-crank circuit breaker in the working position or test position after closing, by the roller 5 into the mechanism lock version 6, the car will not move, to prevent the state in the closing or pull out the load area.
6.3.5 If the electrical closing lock is selected, the closing operation is prevented without unlocking the locking device.
Note: closing the device power of 2.7W, the operating voltage range of 0.65-1.1 times the rated voltage.

6.4 VS1-12 / 630-20 vacuum circuit breaker dimensions
6.4.1 hand car type VS1-12 dimensions (installed in the 680mm wide central counter)

6.4.2 Hand car type VS1-12 Dimension drawing (installed in 880mm wide central cabinet)

6.4.2 Hand car type VS1-12 Dimension drawing (installed in 880mm wide central cabinet)...

6.4.4 Fixed VS1-12 Dimension drawing (800mm) Dimension drawing

6.4.5 Fixed VS1-12 Dimension drawing (1000mm) Dimension drawing

6.5.1 VS1-12 hand car internal electrical wiring schematic

6.5.2 VS1-12 fixed internal electrical wiring schematic


6.6 circuit breaker and cabinet with the size
6.6.1 circuit breaker and cabinet (680mm or 800mm wide) recommended with the dimensional drawings
A) VS1-12 (680mm) and the cabinet (680mm) recommended with the size
B) VS1-12 (800mm) and cabinet (800mm) recommended with the amount of size

6.6.3 VS1-12 (1000mm) and the cabinet (1000mm) recommended with the size of the following figure

6.6.4 static and dynamic contact with the size see Figure XIII

6.7 grounding device assembly size shown in Figure 14

6.8 A, C phase over-current blur (two overfeed 5A) Intermediate transformer external wiring diagram shown below

6.9 A, B, C three-phase overcurrent trip (three overfeed 5A) Intermediate transformer external wiring schematic diagram below

7. installation, commissioning

7.1 VS1-12 / 630-20 When the vacuum circuit breaker is lifted from the box, the hook shall be hung at the lifting hole marked on the circuit breaker. If the vacuum circuit breaker is moved, it shall not be allowed to move. The circuit breaker is subject to greater impact vibration.
Note: Remove the lifting device as required before entering the cabinet.
7.2 circuit breaker factory has been rigorous factory inspection, parameters are in line with technical requirements. The following preparations should be made before a circuit is energized.
A, check the circuit breaker for damage, if damaged please stop using:
B, remove the dirt, especially the insulation surface, due to the transport process or storage process caused by the dirt will affect the product insulation performance:
C, with the manual way to operate the circuit breaker for energy storage, closing and sub-gate, observe the energy storage status, sub-location indication is normal:
D, with the operation of the power supply to operate the circuit breaker for energy storage, closing the sub-gate, observe the energy storage status, sub-location indicator is normal;
E, hand-wheel-type circuit breaker according to the following steps; push the handle into the propulsion hole, clockwise to move forward, counterclockwise to exit. Advance the total stroke 200mm. In the sub-gate state, it should be smoothly into the working position or experimental position, please turn the handle 20 turns in the middle speed, when you hear the "click" when the sound is in place (should not be too large to damage the propulsion body), while the corresponding position (S8, S9) circuit connected.

7.3 Rated current at normal operating level 1600A and above Please remove the insulation cover as required.
7.4 for power frequency withstand voltage insulation test.

8. maintenance and maintenance

The company's circuit breaker selection of special sliding bearings, the use of special surface treatment of rust-proof technology, with long-term grease, under normal conditions of use, 10 to 20 years without maintenance, but due to differences in the use of the environment, still need to be necessary The inspection work.
8.1 Depending on the working environment, the circuit breaker body should be properly inspected within 6-12 months. After the appearance of the inspection, the need to clean the surface of the dirty parts of the equipment, with a dry cloth to wipe the surface of the insulation, and then stained with a silk cloth to wipe the other waste (Note that all cleaning agents can be applied to plastic or synthetic plastics material).
8.2 When the circuit breaker is placed for a long time, it may cause the circuit breaker to block the active part, and the circuit breaker shall be subjected to at least 5 times of energy storage and opening operation every year.
8.3 Insulation test shall be carried out at least once a year for the circuit breaker to determine whether the circuit breaker vacuum interrupter is leaky or other external causes the insulation strength is reduced.
8.4 For frequent operating areas, care should be taken to strictly control the number of operations specified in the technical conditions, can not continue to use beyond the useful life.

9. configuration

9.1 Secondary control voltage:

9.2 Locking device:
Function: Prevents closing when the secondary control power supply is not connected or below the technical conditions.
9.2.2 Overcurrent device:
Function: In the case of overload or short circuit in a circuit, the overcurrent relay is operated by the overcurrent relay to open the circuit breaker. Generally added in the A, C phase, there are three phases are added. When the current transformer secondary output capacity is sufficient, the choice of indirect over-current release program, there are 3.5A and 5A two, when the current transformer secondary output capacity is not enough to provide over-current release solenoid demand, Select the over-current trip solenoid on the intermediate transformer. (See Figure 14)

9.3 grounding device:
According to the circuit breaker with wide cabinet can be divided into: 680 screen grounding program, 800 screen grounding program, 1000 screen grounding program, the specific grounding assembly size see Figure 13, Figure 14.

9.4 Secondary components electrical parameters table:

10. transport, acceptance and storage

10.11 transport
A vacuum circuit breaker transport must be packed into the enclosed box and be fixed, remove the product when the first look at the box on the text description and logo, scraping attention to the product center of gravity, do not tilt.
B boxing, unpacking and storage should be in the dry room, the product and the parts to be checked whether the integrity and consistency.

10.2 Acceptance
A out of the box in the room, according to the packing list to check whether the random file is complete, check the product nameplate, certificate is consistent with the order, packing list is consistent with the physical.
B carefully remove the circuit breaker, clean up the surface dust pollution, from the appearance of the product whether there are signs of bumps, with particular attention to the vacuum interrupter whether there are signs of rupture.

10.3 Storage
The circuit breaker should be stored in the dry, ventilated, moisture-proof, shockproof and no harmful gas erosion of the indoor, long-term storage should be part of the transmission lubricating oil, and regularly check the environment is in line with the requirements, vacuum interrupter allows storage period of 15 years.

11. random files

A product certificate of competency
B factory inspection report
C Installation Instructions
D packing list

12. ordering information

The user should specify when ordering;
A VS1-12 / 630-20 vacuum circuit breaker type, name and order quantity
B VS1-12 / 630-20 vacuum circuit breaker rated voltage, rated current and rated short circuit breaking current
C rated operating voltage
The name and quantity of spare parts and spare parts
E The user can select the configuration according to the following table
Standard configuration: includes anti-jump device (K0), no locking device (Y1 + S2), no overcurrent device (Y7, Y8, Y9), no grounding device.