> Products > SF6 Circuit Breaker > LW9-72.5 Sulfur Hexafluoride Circuit Breaker

New Products

LW9-72.5 Sulfur Hexafluoride Circuit Breaker

Item: LW9-72.5 Sulfur hexafluoride circuit breaker
1.SF6 gas provides superior capabilities for extinguishing electrical arcs.
2.The breaker features a straightforward structure and a compact size, making it easy to install.
3.It offers balanced operation with effective opening performance.
4.The sealed design minimizes operational noise, ensuring quieter performance.
5.The circuit breaker has low inspection and maintenance workload, making it user-friendly.

Send Inquiry

Product Description

The LW9-72.5 Sulfur hexafluoride circuit breaker is an outdoor three-phase AC 50Hz high-voltage electrical device. It is primarily designed for the protection of power transmission and transformation lines, and it can also serve as a tie circuit breaker.

Key Features:

Three-Phase Assembly:

The circuit breaker is assembled as a three-phase unit on a frame, featuring a CT15 spring mechanism.

Control Options:

It allows for manual control of three-phase operations on-site, as well as remote control. However, it does not support single-phase operation.

High-Quality Insulation:

Utilizing sulfur hexafluoride (SF6) gas as an insulating medium, this breaker offers extremely high insulation levels. At a pressure of 0.3 MPa, it can easily pass various insulation tests with a substantial safety margin.

Simple Structure and Sealing Performance:

The circuit breaker features a straightforward design with good sealing capabilities. The arc-extinguishing chamber, resistor, and strut form an independent gas barrier, and the low moisture content of the SF6 gas enhances reliability.

Easy Installation and Maintenance:

The LW9-72.5 Sulfur hexafluoride circuit breaker is designed for easy installation and maintenance, requiring no disassembly of internal components to maintain airtightness.

Model Description

Working Environment：

Item: LW9-72.5 Sulfur hexafluoride circuit breaker Installation and Operating Conditions

Mounting Options:

Side-mounted

Middle-mounted

Ambient Temperature Range:

Upper limit: +40°C

Lower limit: -30°C

Altitude:

Maximum: ≤2000m

(For altitudes above 2000m, the rated insulation level should be increased accordingly)

Wind Resistance:

Maximum wind pressure: 700 Pa (equivalent to wind speeds of 34 m/s)

Seismic Resistance:

Earthquake intensity: up to 8 degrees

Pollution Level:

Class I

Maximum Daily Temperature Difference:

No more than 25°C

Main Technical Parameters

Serial number	Parameter	Unit	Value
1	Rated voltage	kV	72.5
2	Rated current	A	2500/3150
3	Rated short-circuit breaking current	kA	31.5/40
4	Rated short-circuit making current (peak value)	kA	80
5	Rated short-time withstand current	kA	31.5/40
6	Rated short circuit duration	S	4
7	Rated peak withstand current (peak)	kA	80
8	Near zone fault breaking current	kA	31.5×75%
9	Rated out-of-step breaking current	kA	31.5×25%
10	first open pole coefficient		1.5
11	Opening time	S	≤0.03
12	Breaking time	S	≤0.06
13	Closing time	S	≤0.15
14	split time	S	≥0.3
15	united time	S	0.06
16	Weight of sulphur hexafluoride gas charged into circuit breaker	kg	3.5
17	Circuit breaker gross weight	kg	1000
18	Mechanical life	Second-rate	3000

Structure And Mounting Dimensions

Product Real Shot

FAQ

Q1: What is the lead or shipping time?

A1: The lead time depends on the quantity ordered, generally within 20-30 days upon receipt of advance payment.

Q2: What is the rated voltage of the LW9-72.5 Sulfur hexafluoride circuit breaker?

A2: The rated voltage is 72.5 kV and 66 kV.

Q3: How do you control quality?

A3: We have a professional QC team that follows Total Quality Management (TQM) principles to ensure quality. Each step complies with standards, and we will provide photos or videos for your reference.

Hot Tags: LW9-72.5 Sulfur Hexafluoride Circuit Breaker, China, Suppliers, Manufacturers, Factory, Wholesale, Price

Product Tag