66kV Outdoor Dead Tank SF6 Circuit Breaker

NegotiableUpdate on October 02

Model

Nature of the Manufacturer: Other

Product Category: The Outdoor Switchgear

Place of Origin: City, Province

Online Consult Contact Information

Overview

Product Details

The outdoor dead tank SF6 circuit breaker combination unit is a new compact intelligent high-voltage switchgear. The structure is composed of components such as incoming and outgoing bushings, circuit breakers, current transformers, etc… When the user needs, the components such as the isolating switch, the grounding switch, the voltage transformer as well as the arrester can be added. The product has the advantages of compact structure, small floor space, small on-site installation workload, short installation period, reliable operation, high intelligence and low maintenance.

Features:

1. The product adopts three-phase sub-box design with small interphase interference, the interphase width is 0.65m, light weight, good conductivity and no eddy current loss.

2. The circuit breaker has superior breaking performance.

The circuit breaker adopts the principle of self-arc extinguishing, fully utilizes the energy of the arc itself to improve its arc-extinguishing ability, to reduce the required operating power of the operating mechanism, and greatly improves product reliability.

3. Highly reliable operating mechanism

The circuit breaker adopts a CTB spring operating mechanism with low operating power and low maintenance, and three-phase mechanical linkage, which has high reliability at the same time.

4. Excellent and flexible SF6 gas system

The distribution of air chamber can be arbitrarily combined. The three-pole circuit breaker can be used as a gas chamber. Each pole circuit breaker can also be used as a separate air chamber. Each pole can also be used as a separate air chamber, and each air chamber is equipped with Density relay. Gas chamber diversity is more suitable for the flexibility and reliability of electrical systems.

5. Easy installation on site

The product is transported as a whole, and there is no need to open the cover at the site. As long as some simple connections are made, it can be operated after inflation and debugging.

6. Data Monitoring

The product uses sensors to monitor the operation status of key equipment in real time, and then collects and integrates the obtained data through the network. Finally, through the analysis of the data, the optimal management of the entire power system operation is achieved.

7. Superior economy

Nowadays, the lａnd is getting more and more attention. The 72.5kV dead tank SF6 circuit breaker integrates circuit breakers, current transformers and other components into one module, which greatly saves the lａnd area and meets the needs of the market.

8. Practical

The 72.5kV SF6 circuit breaker adopts standardized structural modules. The product structure is compact and adopts modular building arrangement, which can meet various main wiring requirements, achieve standardized and modular design and production, and is suitable for new construction, expansion and reconstruction of power plants and substations.

9. Design and manufacture

GB7674-2008 Gas insulated metal-enclosed switchgear with rated voltage of 72.5 kV and above

GB1984-2003 High voltage AC circuit breaker

GB/T11022-1999 General technical requirements for high voltage switchgear and control equipment standards

GB1985-2004 High voltage AC disconnector and grounding switch

IEC62271-102:2002 High-voltage switchgear and controlgear - Part 102: Alternating current disconnectors and earthing switches

Composition of main components

1. Circuit Breaker

The circuit breaker works with the current mature self-energy technology principle. The energy required to break the short-circuit current, in part from the arc itself, reduces the energy of the operating mechanism. The circuit breaker transmission mode is three-phase mechanical linkage, which can effectively ensure the three-phase switching and synchronizing

2. Mechanism of circuit breaker

The circuit breaker mechanism uses a CTB spring operating mechanism with low operating power and low maintenance. The mechanism has more than 10 years of experience in grid operation.

Ordering instructions

The combination appliance is a complete set of power equipment. When you choose the model, please contact us to confirm the technical solution, reach a technical agreement, and then sign the technical agreement and contract:

1. Accurate and clear wiring diagram, the number of each component and the more detailed technical parameters related to the equipment.

2. Main technical parameters and specifications of each component.

3. Requirements for control, measurement, and electrical and interlocking.

4. The name, specification, quantity and transportation mode of the auxiliary equipment and special tools required.

5. Whether the manufacturer needs to provide installation and technical services, technical training and other matters.

Ratings

Description	Unit	Technical Data
Rated voltage	kV	66
Maximum operating voltage	kV	72.5
Rated current	A	2000
Rated short-time withstａnd voltage (4s)	kA	40
Rated peak withstａnd voltage	kA	100
Rated power frequency withstａnd voltage	kV	160 (To ground)
Rated power frequency withstａnd voltage	kV	160+42 (Open contact)
Rated lightning impulse withstａnd voltage (peak)	kV	350 (To ground)
Rated lightning impulse withstａnd voltage (peak)	kV	350+60 (Open contact)
SF6 pressure	MPa	0.4 (Rated pressure)
		0.35 (For alarm)
		0.35 (For lockout)
SF6 annual air leak rate	％	≤0.5

Ratings of Circuit Breaker

Description			Unit	Technical Data
Rated voltage			kV	66
Maximum operating voltage			kV	72.5
Rated current			A	3150
Rated breaking current			kA	40
Rated closing current			kA	100
Closing time			ms	≤150
Opening time			ms	≤30
Total breaking time			ms	≤60
Asynchronous time of operation	Phase to phase	Close	ms	≤4
		Open	ms	≤2
Operating mechanism				CTB Electric spring operating mechanism
Supply voltage of control loop			V	DC220/110

Description		Unit	Technical Data
Installation		Indoor/Outdoor
Ambient temperature		℃	-40 ～ 60
Solar radiation		W/c ㎡	1000
Humidity		％	Daily average 95
Altitude		m	≤2000
Wind velocity		m/s	34
Earthquake condition	Horizontal acceleration	g	General area 0.15 strong earthquake area 0.3
	Vertical acceleration		0.075 0.15