In contrast to dead tank circuit breakers, the interrupter unit in live tank breakers is not grounded during operation; it is exposed to high-voltage potential and therefore these circuit breakers are called live tanks.

1.Brief Introduction

H.V. A.C.porcelain type SF6 gas circuit breakers, with voltage from 40.5-550kV and rated current up to 4000A, manufactured by our company, are provided with

three kinds of operating mechanism, pneumatic, spring and hydraulic type.

Motor is used in spring mechanism to charge closing spring and charge opening spring at closing. Disk spring is used in hydraulic mechanism to be charged instead

of traditional compressed nitrogen gas for charge, and hydraulic driving is used at both opening and closing. Compressed air is used in pneumatic mechanism as driven

force for open while spring is used for close. The three kinds of operating mechanisms have their own features and are used in circuit breakers of different voltage

class respectively.Due to the unit structure in circuit breaker, there are advantages of minimized number of breaks,lower number of parts, simple structure,high

reliability and long period of inspection.

2.Normal Service Condition

2.1.Altitude:≤3000m

2.2.Humidity monthly:≤90%
2.3.Max .wind velocity:≤35m/s
2.4.Pollution class:Ⅲclass,IV class
2.5.Ambient air temperature:-35℃~40℃(It’s satisfied under condition of -40℃ in heavy cold area)
2.6.Max .temperature difference daily: 25K
2.7.Earthquake withstand density:8 degree
2.8.Ice coating: ≤10mm
2.9.Max. radiance from sun: 1000 W/m2

3. Basic Components

All construction types of our live tank circuit breakers consist of the same basic components:

1. interrupter unit

2. post insulator

3. Pillar

4. control cabinet

5. operating mechanism cubicle

4.Reference Project

Safe  Robust  Eco-friendly  Tempetature-resistant  Economical

Our products meet the requirements of national and international standards. This has been confirmed by comprehensive type tests according to the latest IEC and ANSI standards.

Our Turnover & Exhibitions in the Past Few Months

Any more information about our products if you need,just feel free to contact .