• 72.5kV 126kV 145kV 252kV HV SF6 Circuit Breaker
72.5kV 126kV 145kV 252kV HV SF6 Circuit Breaker
discuss personally
Model
LW35-252/4000-50
LW35-252/3150-50
LW35-145/4000-50
LW35-145/3150-50
LW35-126/4000-50
LW35-126/3150-50
LW35-72.5/4000-63
LW35-72.5/3150-50
Basic info
Brand Wone
Model NO. 72.5KV 126KV 145KV 252KV SF6 Circuit Breaker
Rated voltage 145kV
Rated normal current 3150A
Series LW35
Product Detail

Description

LW35 serial circuit breakers, including LW35-72.5, LW35-126, LW35-145 and LW35-252 products, are designed with self-energizing principle that arc generated in the interrupter is distinguished at a specified time with a part of energy produced by the arc itself. They are used for making and breaking normal current, fault current and switching lines to realize the operation (three-pole opening & closing operation and fast automatic-reclosing operation),  control and protection of power system.


Main Features


  • Less consumption of SF6 gas, benefitial for environmental protection. When other kinds of circuit breaker at 0.6 MPa must be filled with SF6 of 27 kg/set, this kind of circuit breaker only need 19.3 kg/set.

  • Dynamic sealing system adopts advanced Glyd-ring and Step seal to reduce starting friction and prevent leakage.

  • Adopt imported control valve of stable performance and anti-slow-opening function in case of pressure loss.

  • Two sets of independent opening control circuit are adopted in hydraulic mechanism with two sets of relay protection to enhance service reliability.


Technical parameter:


LW35.png

What are the purity requirements for SF6 gas in the interrupter of a tank circuit breaker?

  • SF₆ Gas Purity: The purity of SF₆ gas is generally required to be 99.8% or higher. High-purity SF₆ gas ensures its excellent insulating and arc-quenching performance. The presence of impurities can reduce the insulation strength and arc-quenching capability of SF₆ gas. For example, contaminants such as moisture and air can affect the ionization process and the cooling effect of the arc.

  • Toxic and Harmful Substances: When SF₆ gas contains a significant amount of impurities, it may produce more toxic and harmful substances under the influence of the arc, posing greater risks to both equipment and human health.


Know your supplier
Wone
Main Categories
High voltage/Low voltage/Wire cable/Instrument meters/New energy/Tester/Production equipment/Generator/Electrical fittings/Integrated Electrical Equipment
Business Type
Design/Manufacture/Sales
Highest Annual Export (USD)
$50,000,000
Professional Experience
1 years
Workplace
65666m²m²
占位
占位
Related Products
Related Knowledges
Development of an Outdoor Integrated Low - Voltage Current Transformer
Development of an Outdoor Integrated Low - Voltage Current Transformer
In power grid construction, line losses reflect planning, design, and operation management. They’re key for evaluating power systems. For refined low - voltage transformer area line loss management, accurate line loss counting is critical. So, solidifying basic data, ensuring data accuracy, and proper original data collection matter for analysis. We must also optimize factors affecting collection accuracy, make preventive measures, and boost refined line loss management.1 Current Status of
Dyson
07/05/2025
What might be the future development trends of outdoor current transformers?
What might be the future development trends of outdoor current transformers?
I'm Echo, a 12-Year Veteran in the CT Industry, Talking About What's Coming NextHi everyone, I'm Echo, and I've been working in the current transformer (CT) industry for 12 years.From learning wiring and equipment debugging with my mentor to now leading a team tackling complex on-site issues, I've witnessed many technological advancements and industry changes. Especially with outdoor current transformers, there have been significant developments, but also much room for improvement.A few days ago
Echo
07/05/2025
Ratio Trial Verification Method for Current Transformers
Ratio Trial Verification Method for Current Transformers
Fellow electric power calibration workers, you must have encountered this situation: The nameplate of an outdoor current transformer has been tormented by wind, sun, rain, and freezing, to the point where the transformation ratio is indistinguishable! Don't panic, we have a solution - use a current transformer calibrator and through the “transformation ratio trial calibration method”, we can figure out the actual transformation ratio and errors clearly. Here, taking the SHGQ - DC typ
Oliver Watts
07/05/2025
Why Does the Secondary Insulation of Outdoor Current Transformers Drop?
Why Does the Secondary Insulation of Outdoor Current Transformers Drop?
I'm Felix, a 15-Year Veteran in the CT Industry, Sharing What You Need to Watch Out ForHi everyone, I'm Felix, and I've been working with current transformers (CTs) for over 15 years. Today, let’s talk about why the secondary insulation of outdoor CTs sometimes drops, and what you can do to prevent it.Common Causes:1. Moisture Ingress — Poor Sealing is the Biggest Problem!Outdoor CTs are constantly exposed to wind and rain. If the sealing isn't tight enough, moisture can get inside a
Felix Spark
07/05/2025
What tests need to be conducted on current transformers?
What tests need to be conducted on current transformers?
By Oliver, 8 Years in the Electrical IndustryHi everyone, I'm Oliver, and I've been working in the electrical industry for 8 years.From early days doing substation equipment commissioning to now managing protection and metering configurations for entire distribution systems, one of the most frequently used devices in my work has been the Current Transformer (CT).Recently, a friend who's just starting out asked me:“How do you test current transformers? Is there a simple and effective way to
Oliver Watts
07/04/2025
What should be noted when choosing a current transformer for a 10kV station transformer circuit?
What should be noted when choosing a current transformer for a 10kV station transformer circuit?
Practical Experience Sharing from an Electrical Engineer in the FieldBy James, 10 Years in the Electrical IndustryHi everyone, I'm James, and I've been working in the electrical industry for 10 years.From early involvement in substation design and equipment selection, to later taking charge of relay protection and automation system commissioning for entire projects, one of the most frequently used devices in my work has been the current transformer (CT).Recently, a friend who's just starting out
James
07/04/2025
×
Inquiry
Download
Experts Electrical is dedicated to serving the personnel in the global power industry.
Join Experts Electrical, not only can you discover power equipment and power knowledge, but also canhnd like - minded friends!