Product Center

Double throw Outdoor high voltage 12kV disconnetor

Short Description:

GW4  Isolating switch unipolar type, with three unipolar link together into a three-pole arm conductive, isolating switch linkage, the linkage rod by the left and right-handed spirals, easy to adjust the three-phase synchronous also be a single pole use.
GW4 Series isolation switch from the base, post insulator and conductive parts, each pole has two cylinders are mounted on the base ends of the bearing housing, with cross-connecting rod can be rotated horizontally. Knife made conductive by the brass, the contact point is in the middle of two columns, porcelain knife are fixed on top of the pillars.


Product Detail

Product Tags

ISOLATING SWITCH

Isolation switch (disconnector), that is, in the sub-position, there is an insulation distance between the contacts that meets the specified requirements and an obvious disconnection mark; in the closed position, it can carry the current under normal circuit conditions and abnormal conditions within a specified time ( such as short-circuit current switching devices.

GW9

TECHNICAL PARAMETER

Isolating switch model
Isolating switch model
GW4-12 series outdoor use disconnector suit for operating in the power system of outdoor,AC 50HZ,rated voltage 12kV or 40.5kV,close or open the power line that maybe electrified but without load.

Normal service conditions

Altitude:≤3000m

Ambient air temperature:-40℃~+40℃

Wind velocity less than 35m/s

The ambient air is not significantly polluted by dust,smoke,corrosive and flammable gases,vapours or salt.

Pollution grade less than Degree III

Earthquake grade less than Degree 8

Type Rated voltage Rated current Rated peak withstand current Rated short-time current(4s)

GW4-12

12

200

40

16

400

50

20

630

50

20

1000

63

25

1250

63

25

GW4-40.5

GW4-40.5D

40.5

400

50

20

630

50

20

1000

63

25

1250

80

31.5

PELATED PRODUCTS

PRODUCT DETAILS

>>   Operational principle                                                                                                                                              / 工作原理
>>   Safety protection                                                                                                                                                     / 安全防护
>>   Product characteristics                                                                                                                                           / 产品特性
>>   Product details                                                                                                                                                        / 产品细节
>>   Why choose us                                                                                                                                                        / 为什么选择我们

>> Isolating switch

Isolating switch , generally refers to a high-voltage isolation switch, that is, an isolation switch with a rated voltage of 1kV and above, usually referred to as an isolation switch, which is the most used electrical appliance in high-voltage switching appliances. Its working principle and structure are relatively simple, but due to the large amount of use and high requirements for work reliability, it has a great impact on the design, establishment and safe operation of substations and power plants.

5
隔离开关功能

Safety protection   //  Fine workmanship  //  Easy to install  //  Long life  //  Provide custom

>> Operational principle工作原理

The main feature of the isolation switch is that it has no arc extinguishing ability, and can only divide and close the circuit without load current. The isolating switch is used for all levels of voltage, used to change the circuit connection or isolate the line or equipment from the power supply. Usually with an interlock to prevent misoperation when the switch is under load, sometimes a pin is required to prevent the switch from being disconnected under the action of a large faulty magnetic force.

>> Safety protection安全防护

1. During the overhaul of electrical equipment, provide an electrical interval and a clearly visible disconnection point to ensure the personal safety of maintenance personnel.
2. The isolating switch cannot be operated with load: it cannot operate with rated load or large load, and cannot divide and combine load current and short-circuit current, but those with arc extinguishing chamber can operate with small load and no-load line.
3. In general power transmission operation: first close the isolating switch, then close the circuit breaker or load switch;
When the power is cut off: first disconnect the circuit breaker or load switch, and then disconnect the isolating switch.

>> Product characteristics产品特性

According to the different installation methods, high-voltage isolation switches can be divided into outdoor high-voltage isolation switches and indoor high-voltage isolation switches.
Outdoor high-voltage isolating switches refer to high-voltage isolating switches that can withstand the effects of wind, rain, snow, dirt, condensation, ice and thick frost, and are suitable for installation on terraces.
It can be divided into single-column disconnector, double-column disconnector and three-column disconnector according to the different insulating strut structures.
Among them, the single-column knife switch directly uses the vertical space as the electrical insulation of the fracture under the overhead busbar. Therefore, it has the obvious advantages of saving floor space, reducing lead wires, and at the same time, the opening and closing state is particularly clear. In the case of ultra-high voltage power transmission, the effect of saving floor space is more significant after the single-column knife switch is used in the substation.

>> Why choose us

DESIGN SERVICES

Packaging design and improved product mix have a history of more than 20 years. It is the most important to establish and maintain the unique characteristics and style of products

PRODUCT SAMPLING

Mass production can only start after you approve it

DEVELOPMENT

New product development, different market characteristics and commitment to international trade facilitation, credibility and transparency

AFTER-SALE SERVICE

Customer feedback: actively looking for solutions to problems, professional technical guidance and long-term after-sales service

奖状

COMPANY INTRODUCTION

公司图片
Company profile

       Lawrence Electric Co., Ltd. is a high-tech enterprise focusing on power transmission and distribution products, providing customers with one-stop service of power transmission and distribution products.

        It mainly produces and sells lightning arrester, insulator, fuse, isolation / load switch, SF6 / vacuum circuit breaker, power supply fittings, optical cable fittings, switch cabinet and other transmission and distribution products. The company has production bases and sales centers in Jiangxi, Zhejiang, Uganda, Tanzania and other places.

Nature of Business

        Our products have operated safely in the power supply systems of more than 20 countries and regions around the world for more than 10 years. They are also qualified suppliers of China State Grid and China Southern Power Grid. At present, they have gained a good reputation in the field of power system in the world.

world

        We have received high-quality product recommendation letters from power supply companies in Kenya, Uganda, Tanzania, Zambia, Guinea, Ghana, Togo, Mozambique, Nepal, Guyana, Myanmar and other countries and regions.

Real shooting factory

factory

Conformity inspection

test

Ehibition

xhibition

22

------------------------------------------------------------

企业愿景:成为全球输配电集成供应商
OUR VISION: ONE STOP SERVICE FOR THE GLOBAL DISTRIBUTION AND SUBSTATION ELECTRICAL MATERIALS.
企业价值观:以卓越品质立企业之本,以优质服务得民众之心。
OUR VALUE: SUPERIOR QUALITY BUILDS THE FOUNDATION, EFFICIENT SERVICE WINS CUSTOMER’S CREDIT.
企业精神:团队协作,勇于开拓,持之以恒,共创辉煌。
OUR SPIRIT: FOCUS ON TEAMWORK AND COLLABORATION
BRAVE IN EXPLORATION AND CREATIVITY
NEVER GIVE UP ON ANY COMPANY PERSONNEL
TO CREATE A BRILLIANT TOMORROW TOGETHER
员工行为:倾听,微笑,赞美,坚守承诺,感恩。
CONDUCT CODE: LISTEN, SMILE, PRAISE, APPRECIATE
企业责任:为客户创造价值,为员工创造美好生活,为社会做出应有贡献。
OUR RESPONSIBILITY: MAXIMIZE CUSTOMER’S PROFIT, CREATE GREAT CONDITION FOR STAFF,
MAKE CONTRIBUTIONS TO THE WHOLE WORLD !。

PACKAGING AND TRANSPORTATION

Packaging-and-transportation

SHOPPING INSTRUCIONS

Warranty

We are aware of the quality assurance. If you have any question, please contact the customer service, so as to ensure that you can use them and solve your worries.

About Delivery

The production cycle is generally 10 to 30 working days depending on the product. In case any urgent materials please contanct with us for fast delivery.


  • Previous:
  • Next:

  • Write your message here and send it to us