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Products
1250A 15.5KV Vacuum Interrupter for Circuit Breaker
We are a factory specializing in the production of 1250A 15.5KV Vacuum interrupter for circuit breakerr，Insulating shell, ceramic has the best comprehensive performance. The insulation shell mainly plays the role of insulation support and participates in the formation of air tight insulation system.We look forward to becoming your long-term partner in China.
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Product Description
1. Product Introduction
The bellows is mainly made of stainless steel with a thickness of 0.1-0.2mm. It is mainly used to move the electrode within a certain range and seal it in high vacuum. The shielding cover around the contact is mainly used to absorb the metal vapor evaporated on the contact during the arc, so as to prevent the reduction of insulation strength and insulation damage caused by the metal vapor pollution of the insulating shell. At the same time, it is also conducive to the rapid recovery of gap dielectric strength after arc extinguishing. A protective cover is used outside the bellows to prevent the bellows from being burned by metal vapor.
2. Product Parameter (Specification)
| TD-15.5/1250-20B（25B）(W) | |||
| Main Technical Specification | |||
| Parameter name | Unit | Value | |
| 1 | Rated frequency | Hz | 50 |
| 2 | Rated Voltage | kV | 15.5 |
| 3 | Rated short-time（1min） power-frequency withstand voltage | kV | 50★ |
| 4 | Rated lightning impulse withstand voltage（Peak） | kV | 95★ |
| 5 | Rated Current | A | 1250 |
| 6 | Rated short-circuit breaking current | kA | 20/25 |
| 7 | Rated short-circuit making current | kA | 50/63 |
| 8 | Rated short-time withstand current | kA | 20/25 |
| 9 | Rated peak withstand current | kA | 50/63 |
| 10 | Breakding operations of rated short circuit breaking current | Times | 30 |
| 11 | Circuit resistance at lowest rated contact force | μΩ | ≤25 |
| 12 | Rated duration of short-circuit | s | 4 |
| 13 | Closing force due to bellow and atmosphere | N | 80±30 |
| 14 | Force required to hold contacts open at full stroke | N | 100±40 |
| 15 | Mechanical endurance | Times | 10000 |
| 16 | Contacts limit erosion | mm | 3 |
| 17 | Storage life | years | 20 |
| （Mechanical date of matching switchgear） | |||
| 1 | Clearance between open contacts | mm | 9±1 |
| 2 | Average opening speed (0～75% contact gap) | m/s | 1.1±0.2 |
| 3 | Average closing speed(30% contact gap-contact close position) | m/s | 0.7±0.2 |
| 4 | Rated added external contact final force | N | 1800±100 |
| 2200±100 | |||
| 5 | Contact bouncing duration at closing operation | ms | ≤2 |
| 6 | Closing and Opening non-simultaneity of three-phase contacts | ms | ≤1 |
| 7 | Maximum Rebound during opening | mm | ≤2 |
|
Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-100 and GB1984-2014 |
|||
| Note：“★”Within transformer oil or equivalent isolation medium | |||
3. Product Feature and Application
777 electrical brand vacuum interrupter adopts corrugated ceramic insulation shell and copper tungsten tungsten carbide alloy material.
The 1250A 15.5KV Vacuum interrupter for circuit breaker process flow makes the vacuum interrupter have the advantages of small volume, high insulation level, low closing value, long service life and convenient maintenance. The 1250A 15.5KV Vacuum interrupter for circuit breaker is mainly used in power transmission and distribution control system and metallurgical industry. Mining, petroleum, chemical industry, railway, broadcasting, communication, industrial high-frequency heating and other power distribution systems.
4. Product Details
The 1250A 15.5KV Vacuum interrupter for circuit breaker process is the core component of the breaking part of high voltage vacuum circuit breaker.
Generally speaking, this is a satisfactory conductor power supply, and the current is interrupted immediately in case of overload and short-circuit fault to ensure insulation.
It is the most ideal arc extinguishing device.
5. Product Qualification
1250A 15.5KV Vacuum interrupter for circuit breaker: CE, CCC, CQC, IP68, ISO9001-2015
Realize zero defect of products and wholeheartedly provide customers with high-quality products with stable quality, reliable performance and high added value.
6. Deliver,Shipping and Serving
1. Your inquiry will be replied within 24 hours.
2. We offer you professional service in fluent English.
3. Keep the mass production as the sample in high quality
4. Freight forwarder: faster, safer, and convenient.
5. Quality: we have QC on each process,provide high quality products.
Any problem or needed please feel free let us know, we are glad to service for you
We are factory, we can provide competitive price. And all the products will be shipped after quality inspection. Usually we quote within 24 hours after we get your inquiry.
7. FAQ
A1:We are factory with more than 10 years experience in this field.
A2: all products will be 100% inspected before shipment.
A3: Usually we will quote within 24 hours after receiving your inquiry.
A4: Credit Card, West Union, Paypal or T/T.
A5: if you can’t buy our product in your local area, we can send a sample to you. Sample will be charged by retail price, and plus all related shipping costs. Express delivery charge depends on the quantity of the samples.
