Busbar Contact Box Earthing Switch Vacuum Circuit Breaker Switchgear Vcb

Description

We attempt for excellence, provider the customers', hopes to be the most beneficial cooperation team and dominator enterprise for staff, suppliers and shoppers, realizes value share and continuous advertising for overhead transformer, Metal Enclosed SF6 Ring Main Unit, distribution transformers. We have always adhered to the principle of market first and customer first. From the selection of raw materials, production to shipment, we implement strict control to ensure first-class product quality. In the face of the diversity of clients, we always try operate according to different needs of individual customers, providing them with customized service differentiation. We take innovation as our quality policy, follow quality promises, service promises and reputation promises, and take customer satisfaction as our highest pursuit. We adhere to people-oriented, build the cornerstone of the company with talents, and we promote the development of the company with technology.

10kv Indoor High Voltage Vacuum Circuit Breaker

The vacuum circuit breaker mainly consists of three parts: vacuum arc extinguishing chamber, operating mechanism, bracket, and other components.

1. Vacuum arc extinguishing chamber

According to the different types of switches, there are ceramic vacuum arc extinguishing chambers with external screens, small vacuum arc extinguishing chambers with intermediate sealed cup shaped longitudinal magnetic fields, and inner sealed glass bubble arc extinguishing chambers. The basic structure is as follows:

1) Airtight insulation shell

The airtight insulation system composed of a ceramic, glass or microcrystalline glass airtight insulation cylinder, a movable end cover, a fixed end cover, and a stainless steel corrugated pipe is a vacuum sealed container. To ensure airtightness, in addition to the strict operating procedures in the sealing type, the material itself is also required to have small breathability and internal gas release.

2) Conductive system

It is composed of a fixed conductive rod, a fixed running arc surface, a fixed contact, a moving contact, a moving arc surface, and a moving conductive rod. The contact structure can be roughly divided into three types: cylindrical contact, transverse magnetic field contact groove curved surface with spiral shape, and longitudinal magnetic field contact. At present, this type of arc extinguishing chamber adopts longitudinal magnetic field technology, which has strong and stable arc extinguishing ability.

3) Shielding system

Shielding cover is an indispensable component in the vacuum arc extinguishing chamber, and there are various types of shielding cover, such as the main shielding cover surrounding the contact point, corrugated pipe shielding cover, and voltage equalizing shielding cover. The function of the main shielding cover is as follows: ① To prevent products from splashing onto the inner wall of the insulation shell during the arc process, thereby reducing the insulation strength of the shell. ② Improving the uniformity of electric field distribution in the arc extinguishing chamber is beneficial for reducing local field strength and promoting the miniaturization of the vacuum arc extinguishing chamber Condensing arc products and absorbing some arc energy is beneficial for the recovery of the dielectric strength of the arc gap.

operating mechanism

According to the different types of circuit breakers, different operating mechanisms are used. Common operating mechanisms include spring operating mechanism (VS1), permanent magnet operating mechanism, and combination operating mechanism (VBD).

What are the characteristics of vacuum circuit breakers

(1) Strong breaking capacity, up to 50kA; After fracture, the medium between the cracks recovers quickly and there is no need to replace the medium.

(2) The contact opening distance is small. The contact breaking distance of the 10kV vacuum circuit breaker is only about 10mm. The required operating power is small, the action is fast, the operating mechanism can be simplified, and the service life can be extended. Generally, maintenance is not required for around 20 years.

(3) Short arc extinguishing time, low arc voltage, low arc energy, low contact loss, and multiple interruptions.

(4) The mobile guide rod has small inertia and is suitable for frequent operation.

(5) When operating the switch, the action noise is low, making it suitable for urban use.

(6) Arc extinguishing or insulation media do not use oil, and there is no fire or explosion hazard.

(7) The contact head is a fully sealed structure, which will not reduce its performance due to the influence of moisture, dust, and harmful gases. Reliable operation and stable on-off performance. As an independent component, the arc extinguishing chamber is easy to install and debug.

(8) During the service life of the vacuum circuit breaker, the contact part does not require maintenance and inspection. Even if maintenance and inspection are carried out, the time required is very short.

(9) The arc is extinguished in a closed container, and the arc and hot gas are not exposed.

(10) Equipped with multiple reclosing functions, suitable for the application needs of distribution networks

The vacuum circuit breaker is a three-phase indoor switchgear with a rated voltage of 12kV. It is suitable for the control and protection of industrial and mining enterprises, power plants, substations, power facilities and frequent operating places. It adopts the integrated design of VET operating mechanism and circuit breaker. It can be used as a fixed installation unit, or it can be equipped with a special propulsion mechanism. The components of the trolley unit adopt some main circuits and can use all solid sealing columns. It has high reliability and is maintenance-free to achieve a smaller disconnection. Device; can be equipped with KYN28A 12 trolley switch cabinet. In the home, it can also be used with fixed XGN switchgear.

It is an indoor switchgear with three-phase AC 50Hz rated voltage of 12KV power system. It is used as protection and control unit for power equipment and industrial and mining enterprises. Applicable to places that require frequent operation at rated operating current, or multiple times to break short-circuit current.

The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, and can be used as a fixed installation unit, or can be equipped with a special propulsion mechanism to form a hand truck unit.

Features: small size, light weight, suitable for frequent operation

Main structure: vacuum interrupter, electromagnetic or spring operating mechanism, bracket and other components.

Structure

1. This series of VCB adopts the integrated design of operating mechanism and VCB body, which is reasonably arranged, beautiful and compact.

2. This series of VCB is adapted to the wind and rain resistance of the vertical incubator, which can effectively prevent the VIS from being damaged by external factors.

3. Two different installation units, fixed and withdrawable, can meet the different requirements of different switch cabinets.

Application environmental conditions

Ambient temperature: -10℃-+40℃

Relative humidity: The average humidity in a day should not exceed 95%. The average humidity in a month should not exceed 90%.

Earthquake intensity: no more than 8 degrees.

The average pressure of saturated vapor pressure in one day should not exceed 2.2kPa; the average pressure in one month should not

Greater than 1.8Kpa;

Altitude: ≤1000m (except for special requirements)

It should be installed where there is no fire, explosion, serious pollution, chemical corrosion and severe vibration.

NO.	Item	Unit	Parameter
1	Rated Voltage	KV	12
2	Rated Lighting Impulse Voltage tolerance	KV	75
3	1 min Frequency Voltage	KV	42
4	Frequency tolerance of the secondary circuit voltage (1 min)	V	2000
5	Rated short-circuit breaking current breaking number	Times	50
6	1min power frequency	KA	42/48
7	Lightning impulse withstand voltage (peak)	KA	75/85
8	Rated short-circuit breaking current	KA	20/25	31.5	40
9	Rated crurrent	A	630 1250	630/1250	1250/1600
				1600/2000	2000/2500
				2500/3150	3150/4000
10	Rated thermal stability of current(RMS)	kA	20/25	31.5	40
11	Dynamic Stability rated current(peak)	kA	63	80	100
12	Rated short-circuit closing current(peak)	kA	63	80	100
13	rated operating sequence		O-0.3s-CO-180s-CO O-180s-CO-180s-CO
13	rated operating sequence		O-0.3s-CO-180s-CO O-180s-CO-180s-CO
14	Rated a single/back-to-back electric current breaking device group	A	630/400 800/400(40KA)
15	Mechanical life	Times	20000

VS1 Indoor high voltage vacuum circuit breaker (2)

(2)

Certifications

Certifications (2)

Exhibition

Exhibition2

Factory

COMPANY OVERVIEW

FAQ

Q1: How is the quotation procedure?

A: Quotation is based on the technical requirements. Please send the technical specification or single line diagram and quantity to us first. After technical communication and clarification, we will make the quotation.

Q2: Can I get some samples?

A: Yes, sample order is available for quality check and market test. But you jave to pay the sample cost and transportation cost.

Q3: Do you receive customized order?

A: Yes, ODM & OEM are welcomed.

Q4: What's the lead time？

A: According to the order quantity, small order usually need 15-25 days, big order based on negotiation.