145kv 132kv Sf6 Circuit Breaker

Item:150kv 145kv 132kv Sf6 Circuit Breaker
Excellent Arc Extinguishing Performance: SF6 gas is highly effective at extinguishing arcs.
Compact Structure: The design is simple and space-efficient.
Good Opening Performance: Provides reliable operation with balanced performance.
Sealed Design: Reduces operational noise significantly.
Low Maintenance Requirements: Minimizes inspection and maintenance workload.

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Product Description

Item:150kv 145kv 132kv Sf6 Circuit Breaker

This circuit breaker uses the principle of self-energy arc extinguishing, which allows for significant reductions in the diameter and weight of the pressure cylinder. As a result, the operating work is minimized, making the use of a spring operating mechanism feasible.

Key Features:

Each circuit breaker consists of three single poles and three spring mechanisms mounted on three brackets.

It can perform both single-pole operation and three-pole electrical linkage.

The spring operating mechanism is installed on the side of the bracket.

The electrical control system is housed within the mechanism box.

Design Structure:

Upper Part: Contains a single-break arc extinguishing chamber.

Middle Section: Features a porcelain sleeve for insulation.

Lower Part: Includes components for sealing, opening springs, and buffers.

Model Description

Main Technical Parameters

Serial number	Parameter		Unit	Value
Serial number	Parameter		Unit	LW30-126W/T3150-40	LW30-126W/T4000-40(H)
1	Applicable environment			Applicability in normal alpine regions
2	Rated voltage		kV	110/126/132/145
3	Rated frequency		Hz	50(60)
4	Rated current		A	3150
5	first opening coefficient			1.5
6	Rated short-circuit breaking current Ik		kA	40 /31.5
7	Rated short-circuit making current (peak value)		kA	100/ 80
8	Rated short-circuit withstand current		kA	40 /31.5
9	Rated peak withstand current		kA	100/ 80
10	Rated short circuit duration		S	4
11	Rated out-of-step breaking current		kA	10 /8
12	Near zone fault breaking current		kA	90% IK, 75% IK
13	Rated line charging switching current		A	31.5
14	Nominal Operation Sequence			0-0.3S-C0-180S-C0
15	Main circuit resistance		µΩ	≤65
16	Mechanical life		Second-rate	6000 or 10000
17	radio interference level		µV	≤500
18	Creepage distance	between fractures	mm	3906/3150
18	Creepage distance	to the ground	kg	3906/3150

Structure And Mounting Dimensions

Possible causes of electrical circuit failure

Insulation Breakdown:

Deterioration of insulation materials due to age, moisture, or contamination can lead to arcing or short circuits.

Mechanical Failures:

Issues with the operating mechanism (e.g., springs or linkages) can prevent the circuit breaker from functioning correctly.

Gas Leakage:

Loss of SF6 gas due to leaks can reduce arc extinguishing capability and lead to circuit failure.

Electrical Overloads:

Excessive current can cause overheating and damage to circuit components.

Product Real Shot

FAQ

Q1：What is the function of an SF6 circuit breaker?

A1：The primary function is to protect electrical systems by interrupting fault currents and isolating sections of the circuit during faults.

Q2：How does the self-energy arc extinguishing principle work?
A2：This principle utilizes the energy from the electrical arc itself to help extinguish it, reducing the need for large external mechanisms and allowing for more compact designs.

Q3：What maintenance practices are essential for SF6 circuit breakers?
A3：Key practices include regular inspections for gas pressure, checking for leaks, maintaining mechanical components, and testing the electrical control system.

Q4：Can SF6 circuit breakers be operated remotely?
A4Y：es, they can be equipped with remote control systems for operation and monitoring, enhancing operational flexibility.

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