ZN63(VS1)-12 Indoor High Voltage Vacuum Circuit Breaker

Category：

Indoor High Voltage Vacuum Circuit Breaker
Browse number：

59
Release time：

2025-03-11 11:44:12
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Detailed Description

The VS1-12 indoor high-voltage vacuum Circuit Breaker is an indoor switchgear for three-phase AC 50Hz power systems with a rated voltage of 12kV. It sees as a protection and control unit for power grid equipment and industrial and mining enterprise power equipment. Suitable for places that require frequent operation at rated working current, or multiple disconnections of sho-circuit current.

The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, which can be used as a xed installation unit or equipped with a dedicated propulsion mechanism to form a handca unit.

1.Model and meaning

2.Main technical parameters

Number	Project		unit	Data value
1	Rated voltage		kV	12
2	Maximum operating voltage		kV	12
3	Rated current (A)		A	630,1000 1250	1250,1600 2000,2500	1250,1600 2000,3150	2000,2500 3150
4	Rated short-circuit breaking current breaking times		kA	20/25	31.5	40	50
5	Rated short-circuit closing current		kA	50/63	80	100	125
6	Rated peak withstand current		kA	50/63	80	100	125
7	4S rated short-time withstand current		kA	20	31.5	40	50
8	Rated Insulation level	Power frequency withstand voltage (before and after rated breaking)	kV	42 (fracture 48)
		Impact withstand voltage (before and after rated breaking)	kV	75 (fracture 84)
9	Rated operating sequence			Min-0.3 S-to-180 S-to-180 S-to-180
10	Mechanical lifespan		Once	20000
11	Rated short-circuit breaking current breaking times		Once	50
12	Rated closing voltage of operating mechanism (DC)		V	110，220
13	Rated opening voltage of operating mechanism (DC)		V	110，220
14	Contact opening distance		mm	11±1
15	Overtravel (compression length of contact spring)		mm	4±0.5
16	Three phase asynchronous opening and closing		ms	≤2
17	Contact closing bounce time		ms	≤2
18	Average opening speed		S	≤0.05
19	Average closing speed		S	≤0.08
20	Opening time		ms	≤50
21	Closing time		ms	≤100
22	Main circuit resistance of each phase		μΩ	≤40
23	Allowable wear and accumulated thickness of the dynamic and static heads		mm	3

3.Appearance and installation dimensions

Note: The parentheses indicate a rated current greater than 1600A

Installation Techniques for Circuit Breakers

Circuit Breaker Installation Tips

Installing a circuit breaker is crucial for safeguarding your electrical system. Proper installation ensures the safety of your home or workplace by preventing electrical hazards. Follow these essential circuit breaker installation tips for a secure and efficient setup.

1. Choose the Right Breaker

Before beginning the installation, ensure you choose the correct circuit breaker for your system. Consider the type of electrical system you have (single-phase or three-phase) and the amp rating that matches the wiring size. For instance, a 15-amp breaker should be paired with 14-gauge wire, while a 20-amp breaker needs 12-gauge wire.

2. Turn Off the Main Power

Safety is paramount when working with electricity. Always turn off the main power supply before installing a circuit breaker to avoid electrocution or damage to the electrical panel.

3. Check the Panel

Ensure that the electrical panel is in good condition. If it's old or damaged, it might be time for a replacement. The panel should be clean and free of debris to ensure proper breaker installation.

4. Insert the Circuit Breaker

Align the new circuit breaker with the slots in the panel. The breaker should snap into place securely. Make sure the breaker’s metal tab fits correctly into the panel’s bus bar.

5. Connect the Wires

Once the breaker is in place, connect the corresponding wires. The black (hot) wire should be attached to the terminal screw on the breaker. The neutral wire (usually white) should be connected to the neutral bus bar, and the ground wire (green or bare) should go to the ground bus bar.

6. Tighten the Connections

Ensure all wire connections are tight. Loose connections can cause electrical hazards like overheating or fires. Use a screwdriver to tighten each connection securely.

7. Test the Circuit Breaker

After installation, turn the main power supply back on and test the new circuit breaker. Flip the breaker switch to the "on" position and check if the connected circuit functions correctly. If the breaker trips immediately, recheck the wiring to ensure everything is correctly connected.

8. Label the Breaker

Once the circuit breaker is installed and tested, label it clearly. Labeling helps you identify the breaker’s function in Case of future maintenance or troubleshooting.

9. Regular Maintenance

Periodically check circuit breakers for signs of wear or damage. Over time, breakers may lose their effectiveness. If a breaker trips frequently, it may need to be replaced.

Conclusion

Installing a circuit breaker is essential for a safe and functional electrical system. By following these tips and prioritizing safety, you can ensure proper installation. Always consult a professional electrician if you’re unsure about the process to avoid mistakes and potential hazards.