Products Description

12kV vacuum interrupter embedded pole for indoor switchgear is a core component of high-voltage electrical appliances that seals the vacuum interrupter, conductive elements and insulating support parts into a whole through epoxy resin and other materials. It is assembled in the circuit breaker and its working principle is the same as that of the vacuum interrupter.

12 kv vacuum interrupter embedded pole supplier

Core design

a. Structural optimization: Direct-acting modular design is adopted to integrate the vacuum interrupter, incoming and outgoing busbars and insulation components, greatly reducing the conductor overlap surface and connecting bolts, significantly improving the compactness of the structure and assembly efficiency

b. Process upgrade: The APG (automatic pressure gel) process is used to achieve epoxy resin integrated sealing, which protects the vacuum interrupter from environmental influences such as dust and humidity, while optimizing the electric field distribution, and the insulation strength is more than 3 times higher than that of traditional air insulation

c. Performance enhancement: ‌

Insulation performance‌: The epoxy resin vulcanization layer converts surface insulation into volume insulation, with a lightning impulse withstand voltage of 85kV and a power frequency withstand voltage of 48kV;

Mechanical life‌: The overall mechanical life is ≥30,000 times, and the permanent magnet mechanism life can reach 100,000 times;

Environmental adaptability‌: Supports a wide temperature environment of -40℃ to 70℃ and withstands 8-degree earthquake intensity.

Normal use conditions

a. Ambient air temperature: not more than +40℃, and the average value measured within 24 hours does not exceed 35℃; the lowest ambient air temperature is -25℃.

b. Altitude 1000m and below, above 1000m, consult the supplier for technical confirmation.

c. Humidity conditions are as follows:

Relative humidity: daily average value is not more than 95%, monthly average value is not more than 90%;

Saturated vapor pressure: daily average value is not more than 2.2kPa, monthly average value is not more than 1.8kPa;

d. The surrounding air is not obviously polluted by dust, smoke, corrosive or flammable gas, steam or smoke, nor can it be polluted by organic solvents.

e. No frequent severe vibration.

Product Specifications

Specification Sheet

No.

Name

Unit

Data

Voltage Parameters

1	Rated frequency(fr)	Hz	50/60
2	Rated Voltage(Ur)	kV	12
3	Rated short-time (1 min) power frequency withstand voltage (Ud)	kV	48(Across the contact caps )
			48((To ground )
4	Rated lighting impulse withstand voltage(UP)	kV	85(Across the contact caps )
			85((To ground )

Current Parameters

1	Rated current	A	630	1250	630	1250	1600
2	Rated short-circuit breaking current(Isc)	kA	20	25	25	31.5
3	Percentage D.C component of rated S.C breaking current	%	40
4	Breaking operations of rated short circuit breaking current	Times	30
4		Times	Or afford with E2 class GB/T 1984 AND IEC 62271-100
5	Rated short-time withstand current(Ik)	kA	20		25	25	31.5
6	Rated short circuit duration(tk)	s	4
7	Rated withstand current (peak) (Ip)	kA	50		63	63	80
8	Rated short-circuit making current(IMC)	kA	50		63	63	80
9	Rated cable -charging brearking current	A	25
10	☆Rated breaking current of single capacitor bank (lbb)	A	400/630
11	☆Rated breaking current of back to back capacitor bank (lbb)	A
12	Circuit resistance at lowest rated contact force	A	≤25			≤23
13	Standard Operating sequence	O-0.3s-CO-180s-CO
14	Local discharge limit value (The tedt voltage is 1.1Ur)	pc	≤5

Mechanical Parameters

1	Weight of movable parts	kg	2.5
2	Closing force due to bellow and atmosphere	N	100±40
3	Force required to hold contacts open at full stroke	N	180±60
4	Rated contact final force	N	2500±200~3100±200
5	Added external contact force at touch point	N	1750±150~2200±160

Requirements for Switch Mechanical Characteristics

1	Clearance between open contacts	mm	19±1
2	Average opening speed(Contact closing position ~ 75% open distance)	m/s	1.3±0.2
3	Average closing speed (30% opening distance ~ contact closing position)	m/s	0.8±0.2
4	Contact closing bounce time	ms	≤2
5	Closing and opening non-simultaneity of three-phase contacts	ms	≤2
6	Maximum rebound during opening	mm	≤2
7	Over-travel	mm	4±0.5

Lifespan

1	Storage period	years	20
2	Mechanical life	Times	30000
3	Allowable wearing thickness of contacts	mm	3
Remark: 1.Meets or exeeeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-100 and GB 1984. 2.Rated characteristics to be given on request . 3.The movable seem of the EP could be only suffering a torque no more than 45 N.M and in order not to damage the metal bellows .the movable stem should be prevent from ratation when assembling .

Product Advantages

Structure and insulation performance

a. Integrated packaging design

b. Insulation reinforcement

Performance and reliability

a. High breaking capacity

b. Long life and low maintenance

c. Stable operation guarantee

Environmental adaptability

a.Wide temperature range operation

b. Earthquake resistance and high altitude adaptation

‌Product Applications

12kV vacuum interrupter embedded pole for indoor switchgear is Widely used in for power systems, mining and industrial fields, public facilities and civil fields.

Product Outline Drawing

12 kv vacuum interrupter embedded pole for indoor swithgear in stock

Why Choose Us?

product-717-476

Our Mission and Vision

Since our founding, we have been driven by a mission to revolutionize power transmission and distribution systems. Our vision is to expand our international market share and establish our VTZ brand as a symbol of quality and innovation in the electrical industry. We are committed to becoming a global leader, known for our dedication to advancing technology, ensuring quality, and prioritizing customer satisfaction.

After-sales and Service

We are committed to providing exceptional after-sales support to our global customers. Our services include worldwide technical support and warranty coverage, such as online remote technical support, video training, and on-site installation guidance. During the warranty period, we respond quickly to equipment defaults, and provide repair or replacement services, with the option to extend warranties as needed. To ensure effective communication, we also offer multilingual support and provide a comprehensive feedback mechanism that allows us to track customer satisfaction and continuously improve our service quality.

Excellence in research and development

Innovation is at the core of our business. We have independently developed the VTZ Series Vacuum Circuit Breakers and continue to invest in research and development to meet the evolving needs of the electrical industry. Our R&D team consists of senior technical experts with decades of experience in the design and manufacture of high and low voltage electrical equipment. Their expertise, combined with our advanced facilities, allows us to stay ahead of industry trends and continually optimize our product offerings.

Advanced manufacturing and production

We operate one of the most advanced and standardized assembly line manufacturing facilities in the industry, equipped with the latest technology, enabling us to produce a wide range of high quality electrical products with precision and efficiency. Wecomply with GB 1984-2024 and GB/T11022-2020 standards to ensure the highest quality. Our commitment to excellence is reflected in the durability, reliability, and compatibility of our products.

Adapting to industry trends

Guided by our strategic development plan, we continuously adapt our products to align with the latest trends in smart grids, power system automation, and high altitude environments. Our leading high-current, high-voltage, and long-life products are designed to meet the rigorous demands of today's power systems, providing our customers with reliable, maintenance-free solutions that stand the test of time.

Honors And Certifications

product-620-877 product-880-1274