| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Manual Type |
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Application
SF6 gas insulated load break switch is outdoor type pole mounted 11KV 3 phase 50/60Hz ac SF6 insulated. The make and break switching operation can be performed in " ON/ OFF LOAD" condition,used for the sectionalization of HT network.
The assembly of Sf6 insulated load break switch is supplied as a single unit with single pole mounting arrangement and can be manually operated. The unit can facilitate the installation of the assembly on both sides (left or right) of the pole to operate and install the operating handle in accordance with the site conditions.
Tank case material is stainless steel: tank case is designed for its maximum robustness so that at a maximum bursting pressure of the tank,switching operaion is not disturbed. Moreover, its minimum welding line of stainless steel tank case results in minimum corrosion
The insulation of load break switch is SF6 gas,meets the requirement of IEC60376 latest application. To maintain the insulating capacity of SF6 gas during the service life of switch, a moisture and de-composed gas obsorber contain in the tank
The enclosure is sealed for life and meets "Pressurized sealed system" criteria in conformity with the standard IEC62271-1.
SF6 load break switch is fitted with safety bursting mumbrane located in the safest part of the tank. It will avoid any damage to the operator in case of an overpressure (internal arc). opening the membrane before the tank or bushing are destroyed.
A low pressure gauge is provided at the bottom of tank which can be visible /readable by operator along with the low pressure lockout mechanism, which interlocks/ prevents the electrical and mechanical operation if the gas pressure is low.
The polymer insulators are made of HTV (High Temperature Vulcanization) silicone rubber polymer having excellent hydrophobic properties so as to meet the electrical and mechanical characteristics of international standards IEC61109,60383 & 62271 (Latest edition). The insulators is grey color and free from cracks and any other visible coating defects.
Keystone
The mechanical and electrical characteristics of the silicon rubber insulator is as under:
Technical Performance
Usual service condition
| 1 | Item | Unit | 12/24 | ||
| 2 | Rated voltage KV Rated frequency | Hz | 50/60 | ||
| 3 | Rated insulation level (charged SF6 gas 0.05MPa/20°C) | Lightning impulse withstand voltage (peak) | Phase to phase , phase to earth | kV | 75/125 |
| Across open contacts | 85/145 | ||||
| 1 min P.F withstand voltage | Phase to phase , phase to earth | 42/64 | |||
| Across open contacts | 48/79 | ||||
| Raining withstand voltage test | 34/50 | ||||
| 4 | Insulation level under zero gauge pressure 1 min P.F withstand voltage | kV | 30 | ||
| 5 | Rated current | 630 | |||
| 6 | Rated load breaking current at 0,05MPa /20°C) | A | 630 | ||
| 7 | Breaking current at zero gauge pressure | 630 | |||
| 8 | Rated short-circuit making current | kA | 50 | ||
| 9 | Rated short-time withstand current / duration | kA/s | 20/4 | ||
| 10 | Rated peak withstand current(peak) | kA | 50 | ||
| 11 | Rated cable charging breaking current | A | 25 | ||
| 12 | Rated line charging breaking current | 1.5 | |||
| 13 | Rated loop breaking current | 630 | |||
| 14 | Breaking times of rated load breaking current | times | 100(E3 class) | ||
| 15 | Rated SF6 gas pressure | Mpa | 0.05±0.01 | ||
| 16 | Main loop resistance for each phase | μΩ | ≤120 | ||
| 17 | Relative gas leakage rate | yearty | ≤1% | ||
| 18 | SF6 gas moisture content | Delivery ex-factory value | ppm | ≤150 | |
| Switch operating value | ≤300 | ||||
| 19 | Mechanical life | times | 5000(M2 class) | ||
| 20 | Contact gap | mm | 47 ±2 | ||
| 21 | Contact over-travel | 17±2 | |||
| 22 | Average opening speed | m/s | 1.2±0.2 | ||
| 23 | Average closing speed | 0.6±0.2 | |||
| 24 | Closing time | ms | 25-60 | ||
| 25 | Opening time | 18-45 | |||
| 26 | Rated operating voltage | V | DC220,AC220 | ||
| 27 | Rated power for energy storage motor | W | 40 | ||
| 28 | 1 min P.F withstand voltage for secondary loop | kV | 2 | ||
| 29 | Phase-to-phase spacing | mm | 235±1.5/340±1.5 | ||
| 30 | Net weight | kg | 125/155 | ||
Our Services
FAQ
Q 1. Are you a factory or trading company?
A.We are a factory.
Q 2. Where is your factory located? How can I visit there?
A. Our factory is located in Wenzhou City, Zhejiang Province, China. You can fly to Longwan airport directly. All our clients,from home or abroad, are warmly welcome to visit us!
Q 3. What's the payment term?
A. We accept TT, 30% deposit and 70% before shipment, Western Union, L/C At Sight is ok! We'll show you the photos of the products and packages before you pay the balance.
Q 4. Tell me the standard of package? What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q 5. Would you accept to use our logo ?
A. If you have good quantity,it absolute no problem to do OEM.
Q 6. How about the transport?
A. If the number of goods is small we usually use TNT,DHL,FEDEX,EMS and some express you offered. If the number of the goods is big usually we use the FWD you offered or we provided. Either by sea or by air is OK.
Q 7. What is your Production lead time / delivery time?
A: Generally, it will take 25 to 30 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Silicone rubber's regular product is 1,000/ week , Porcelain's need 2-3 weeks about 1000 pcs.
Q8. How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
A: 2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
A: 3.Most goods we have the type report according the IEC STANDARD
Q9. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the courier cost.
Q10. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q11. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q12.What certificates do you have?
A:ISO9001,OHSAS18001,ISO14001 certificate and Type test report of product.
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