Zw20-12f Type Sf6 Outdoor AC Vacuum Interrupter Air Circuit Breakers for Three Phase Systems

• Breaking Capacity: 20ka, 25ka, 31.5ka
• Operation: Manual Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: ACB
• Model NO.: ZW20-12
• Poles Number: 4
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker
• Certification: VDE, ISO9001:2008
• Product Name: Zw20-12
• Rated Current: 630A, 1250A
• Application: Electric Power Transmission
• MOQ: 1 Piece
• Rated Voltage: 7.2kv, 12kv, 17.5kv, 24kv
• Trademark: GGAOE
• Origin: Zhejiang, China
• HS Code: 7201500010
• Production Capacity: 100000 Piece/Pieces Per Month

Product Description

Product Description

 

overview

ZW20-12F series outdoor high-voltage AC boundary vacuum circuit breaker (hereinafter referred to as "Boundary circuit breaker") is an outdoor high-voltage switchgear with three-phase AC 50Hz and a rated voltage of 12kV. It is mainly composed of a vacuum circuit breaker body, distribution automation feeder terminal, voltage transformer, control cable, etc. the circuit breaker body is equipped with a vacuum arc extinguishing chamber, current transformer, zero sequence current transformer, and other components.
Boundary circuit breakers have remote management mode, and the protection control function and communication function can be reliably judged, and the detection is used in substations, industrial and mining enterprises, and urban and rural power grids for control and protection. It is especially suitable for places requiring frequent operation and urban milliampere zero sequence current and phase-to-phase fault short-circuit current, so as to realize automatic removal of single-phase grounding fault and phase-to-phase short-circuit fault.
Boundary circuit breakers adopt vacuum arc extinguishing chamber and SF6 gas insulation. The box adopts foreign advanced gas sealing, explosion-proof, and insulation structure technology, with excellent overall sealing performance. Its spring operating mechanism adopts a miniaturized design, and excellent performance and action reliability are much higher than the domestic traditional spring operating mechanism.
The boundary circuit breaker shall comply with GB / T 1984-2014 high voltage current circuit breaker, DL / T 402 - 2016 high voltage current circuit breaker, DL / T 403 - 2000 technical conditions for ordering 12kV - 40.5kV high voltage vacuum circuit breaker, DL / T 721 - 2013 remote terminal of distribution automation system and other technical standards.

Main Technical Parameters
No.	Item			Unit	Data
1	Rated frequency			Hz	50
2	Rated voltage			kV	12
3	Rated current			A	630	1250
4	Rated short-time power frequency withstand voltage	Interphase, to earth(wet)	kV/min	34/1
					Interphase, to earth(dry)		42/1
					Fracture (dry)		48/1
					Secondary circuit to earth		2/1
5	Rated lightning impulse withstand voltage	Interphase, to earth	kV	75
				Fracture		85
6	Rated short-circuit breaking current			kA	20/25
7	Rated short-circuit making current(peak)				50/63
8	Rated short-time withstand current and duration			kA/s	(20/25)/4
9	Rated peak withstand current			kA	50/63
10	Rated short-circuit breaking current breaking times			Times	30 (E2 Level)
11	Gas Rated Gauge Pressure			MPa	0
12	Main circuit resistance			μΩ	≤120
13	Rated Operating Voltage and Rated Voltage for auxiliary(control) circuit			V	AC/DC220,DC48,DC24
14	Mechanical life			Times	10000 (M2 level)
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate.

Ordering Instructions:

The following technical information should be provided when placing an order: Main wiring scheme number, purpose and single line system diagram, rated voltage and rated current rated short-circuit breaking current/distribution room layout plan and arrangement and configuration diagram of switchgear;
Requirements for control measurement and protection functions of switchgear, as well as requirements and schematic diagrams for other interlocking and automatic devices;
The models specifications and quantities of the main electrical components inside the switchgear;
When the switchgear is used in special environmental conditions; detailed instructions should be provided when placing an order;

Felds of Application

Company Profile

Certifications

Delivery

FAQ

Q:what's your major products?
A: oil immersed transformer, dry type transformer, Transformer Substation, High and Low Voltage Switchgear

Q: Can your product be customized?
A: Considering differences in voltage, frequency and other special transformer product in different countries and regions, our product can be customized according to your requirements.

Q: When can I get the price?
A:Usually we quote within 24 hours after we get your inquiry.

Q: What about lead or shipping time?
A: The lead time depends on the quantity you ordered, generally within 15 days upon receipt of advance payment.

Q: What is the price of shipping?
A: Depending upon the port of delivery, prices varies.

Q: Do you offer guarantee for the products?
A: Yes. We offer at least one years guarantee for all of our transformers.

Q: Your Advantage?
A: 15 years experience, Advanced production equipment, Stable quality, Fast delivery, Professional & good & Prompt service. Also some free parts can be provided for you.