The bypass comprehensive action technology is a new type of operation technology that improves the reliability of power
supply in the distribution network. It includes various operation methods such as conventional distribution network
operations, live line operations, bypass operations, and mobile power supply operations. The 12kV/24KV engineering type
bypass load switch is the core equipment that meets the comprehensive new operation technology of the bypass. This
switch uses flexible power cables, self-locking quick plug-in cable connectors, bypass switches, mobile box transformers,
and other equipment to build different distribution units in a modular combination to provide bypass power to users. It can
not only enable distribution operators to complete line maintenance work under uninterrupted power supply, but also provide
temporary power supply for difficult to handle cable line faults, narrow the scope of power outages, reduce the impact of
power outages on users, and improve power supply reliability. The bypass load switch adopts SF6 gas with outstanding
insulation and arc extinguishing performance and advanced main circuit structure. The switch features are as follows:
1.1. The interior of the body is injected with high-purity (99.9%) SF6 gas with outstanding insulation and arc extinguishing
performance, so the arc breaking time is short (1/2 Cycle), the insulation recovery speed is fast, and the insulation
performance is good.
1.2. The very short arcing time during load current breaking has little consumption on the contacts at the breaking point,
so there is no need to maintain or replace the main circuit.
1.3. The main circuit operating mechanism is a simple inverted triangle structure (Trigger), which is not affected by high-
frequency vibrations, gravity, external impacts, etc. caused by earthquakes or strong winds. Its performance is very stable
and its mechanical life is long.
1.4 The surface of the body is made of SUS304 stainless steel treated with paint, so it will not be corroded. The operating
mechanism and mechanical transmission part are also installed inside the sealed body, so there will be no malfunction
due to corrosion.
Even at atmospheric pressure (0 kg · f/C ), its insulation and breaking performance can be fully guaranteed. Even if the
SF6 gas inside the body leaks and its pressure drops to 0, it can still ensure all insulation and breaking performance.
1.6 With Charged current display and counting display;
1.7 Possess nuclear phase function
1.8 has manual operation, electric operation, and remote control opening and closing functions (optional), making
operation convenient, fast, and safe.
1.9 Equipped with fault detection, alarm, and automatic fault cutoff functions (optional) for easy fault detection and protection.
Technical parameters:
3.2 Technical parameters
3.2.1 Rated value
Rated voltage: 8.7/15/24kV
Rated current: 200A/400A
3.2.2 Insulation level
1min power frequency withstand voltage between phases and to ground: 42KV/64 kV
1min power frequency withstand voltage between fractures: 45KV/79kV
Rated lightning impulse withstand voltage between phases and to ground: 75KV/125kV
When the SF6 gas switch is at 0 gauge pressure, the insulation level and rated breaking current of 200A/400A can also
be reached.
3.2.3 Dynamic thermal stability performance
Rated peak withstand current: 31.5kA
Rated short time withstand current: 12.5KA/4S
3.2.4 Breaking capacity
Rated breaking current: 200A/400A
Rated current breaking times: more than 100 times
Rated breaking capacitance current: 25A
Rated breaking line charging current 2.5A
Switching no-load transformer inductance current 15A
| Project Value |
Unit |
|
| Main circuit resistance |
μΩ |
≤150 |
| Rated closing/opening operating voltage |
V |
DC 24 |
| Switch closing speed m/s |
m/s |
1.8±0.4 |
| Switch opening speed m/s |
m/s |
1.8±0.4 |
| Switch closing time ms |
ms |
700-1000 |
| Switch opening time |
ms |
700-1000 |
| Switch contact opening distance |
mm |
40±2 |
| Switch contact travel |
mm |
58±2 |
| Switch closing asynchronous |
ms |
≤3 |
| Switch opening asynchronous |
ms |
≤3 |
| Rated gas pressure gauge pressure Mpa |
Mpa |
0.07±0.005 |
| Annual leakage rate of SF6 gas%/year |
%/ |
≤0.5%/ |
| Total weight |
kg |
95 |
Company Introduction
NingboVille Enterprise Co.,Ltd.is a combination of Transformer R&D center, production, sales and
after sales service,possesses of strong technical strength andexcellent manufacturing equipments, as
well as modern Office facilities. It specially produces large scale power transformer and industrial
transformers of high quality and reliability. A large share of its resources are devoted to research and
development of industrial and special transformers and reactors for any special application,such as the
iron and steel and electrometallurgical industries.The company main working is suppling,engineering,
designing,manufacturing, executing, and commissioning for transformer .
Why Choose Us
FIRST-CLASS PROCESSING AND TEST EQUIPMENT
We have more than 500 sets of sophisticated, advance production and test equipments, complete and perfect processing
equipments, and scientific and rational processing technology, which guarantee first-class products, Authorized by the
Bureau of Zhejiang Technology Supervision, Quzhou Fangyuan Inspection Company of Power Transmission and
Transformation Equipment, whick is based on our testing center, undertakes the quality inspection of the industry in our
province, this is a solid guarantee for our excellent product quality.
BEAUTIFUL ENVIRONMENT
We are confident that good products come from good personnel, and good environment makes qualified personnel. The
company is committed to creating a garden-like working environment for employees. We have green belts, modern
standardized workshops and well-planned parks where we sow our youth; we work hard, so we are harvesting the future.
With the first-class quality products, reasonable price and excellent after-sale services.product not only best-selling all
over the country,but also in the international market have higher credit, such as Thailand, Vietnam, Myanmar, Indonesia,
alaysia,Philippines, Ethiopia and Nigeria, Saxonstan, Uzbekistan, Korea, Turkey, Sudan, Iran etc. especially in the steel
enterprises, VILLE production of transformers already have high reputation.
Our Services
FAQ
| 1. Q: |
What is your delivery time ? |
| A: |
Depend on the type of transformer. |
| 2. Q: |
What is your payment term? |
| A: |
30% advance by T/T , 70% before delivery by T/T or L/C or we can discuss about it. |
| 3. Q: |
What kind of starndard you follow? |
| A: |
IEC, ANSI, CSA, GB, etc |
| 4. Q: |
What kind of supporting documentation you can provide normally |
| A: |
Quotation,outline drawing,manufacturing plan, quality control plan
testing plan, financial report, type test report(KEMA, CESI),reference list,etc |
| 5. Q: |
What is your normal wanrranty period? |
| A: |
12 months after transformer operation. |
| 6. Q: |
Can u do installation and commissioningin user's site? |
| A: |
Yes, we can send our installation team to user's country for service. |
| 7. Q: |
Do you have any experience in this kind of transformer? |
| A: |
Yes, we can provide reference list for check. |
| 8. Q: |
Are you manufacturer or trading company? |
| A: |
Manufacturer with own import & export company. |
Thanks for choosing VILLE as your reliable partner and
please trust both of us will create a brilliant future!
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