The 11kv molded vacuum interrupter is Wenzhou Xifa Electric Power Equipment Co., Ltd. specially designed to withstand harsh weather conditions. It is suitable for installation extremely challenging environments, such as in coastal substations, high-altitude humid mountainous areas, and auxiliary facilities on offshore platforms, etc. Moreover, it compliant with IEC 62271-100 standard.It has the following technical highlights and advantages.
Unique “three-proof” molding process:
1. Anti-condensation: Eliminating the internal air gap by the solid insulation prevents the occurrence of surface flashover.
2. Anti-deformation:The molded structure enhances the mechanical strength of the arc extinguishing chamber.
3. Anti-aging: The unique epoxy system has excellent resistance to ultraviolet rays and cold/hot temperature cycles, ensuring the long-term reliability of the insulation system, supporting a 20-year service life in outdoor cabinet installations..
The high voltage 11kv molded vacuum interrupter can be used in indoor medium-voltage switch cabinets,on outdoor pole-mounted circuit breakers, and in industrial plant areas. It is suitable for frequent operations, short-circuit interruption, and harsh environments, thus ensuring power maximum supply safety and stability.
1. We base our design on the IEC standard as bottom line and set the design goal based on the demands of harsh environments.
2. There are professional report as data support about high humidity and salt spray resistance.
3. High quality and reasonable price ,and offer 24-hour after-sales service
In an offshore thermal power plant in Indonesia, the local humidity is consistently above 85% and is also accompanied by salt fog. The locals often suffer from the damage of vacuum interrupter. After purchasing Wenzhou Xifa Electric Power Equipment Co., Ltd.'s high voltage 11kv molded vacuum interrupters for operation for 3 years, no faults caused by insulation degradation or corrosion occurred.In addition, costs have been reduced by 20%.
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Rated Voltage |
12 KV |
|
|
Rated Frequency |
50/60 H |
|
|
Rated Current |
630/1250 A |
1250/2000/2500/3150 A |
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Rated Short Circuit Breaking Current |
20/25 KA |
25/31.5/40 KA |
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Rated short-circuit closing current |
50/63 KA |
63/80/100 KA |
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short-time withstand current (4s) |
20/25 KA |
25/31.5/40 KA |
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Rated peak withstand current |
50/63 KA |
63/80/100 KA |
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Loop resistance under rated contact pressure |
≤25 μΩ |
≤20 μΩ |
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Contact self-closing force |
80±40 N |
250±50 N |
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Number of breaking operations at rated short-circuit breaking current |
30(Class E2） |
20-30(Class E2） |
Q1:At which level does your insulation performance fall in the IEC standards? Could you provide the specific values for the power frequency and lightning impulse withstand voltages?
A1:high voltage 11kv molded vacuum interrupters meet the "general insulation level" for 12kV equipment as stipulated in IEC 62271-1. The typical parameters are:
Power frequency withstand voltage (1 minute): 42 kV (to ground / between phases) / 48 kV (at the breaker)
Impact withstand voltage (peak): 75 kV (to ground / between phases) / 85 kV (at the breaker)
We have designed a 10%-15% design margin for our export products to ensure safe operation even in grid fluctuations or harsh environments.
Q2:What tests do you conduct before the products leave the factory? How can you ensure that each of them that you deliver to me is of good quality?
A2: We implement a 100% inspection system. Before each arc-extinguishing chamber is shipped out, it must pass the following tests:
Power frequency withstand voltage test: Inspect internal insulation and vacuum degree.
Loop resistance test: Ensure good contact.
Magnetic control vacuum gauge test: The actual measured internal vacuum level (better than 1.33×10⁻³ Pa).
Appearance and size inspection.
All test data will be recorded and archived, enabling individual traceability.
Address
No. 391, Jingqi Road, Yanpan Industrial Zone, Yueqing City, Zhejiang Province, China
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