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Home > Products > Indoor HV Vacuum Circuit Breaker > Vyf1-24 The New-Generation Indoor Vacuum Circuit Breaker

Vyf1-24 The New-Generation Indoor Vacuum Circuit Breaker

Basic Info

Model No.:  VYF1-24

Product Description



Model NO.: VYF1-24


Operation: Energy-storage Type


Arc-extinguishing Medium: Vacuum


Poles Number: 3


Function: Overcurrent Protection


Environment: Indoor High Voltage


Origin: Jiangyin Yunfeng, China




Breaking Capacity: High Voltage Circuit Breakers


Speed: High-Speed Circuit Breaker


Installation: Fixed


Type: Circuit Breaker


Certification: ISO9001-2000, CE


Trademark: YF


Product Overview

VYF1-24(VS1-24) series Vacuum Circuit Breaker is the new-generation indoor vacuum circuit breaker with integrated sealed pole rod developed by our company on basis of VS1,covering 630A-3150A/25kA-31.5kA series with rated parameters of 24kV.

VYF1-24(VS1-24) series vacuum circuit breaker is the three-phase 50-60 Hz indoor switchgear with rated voltage 124kV and serves as the protection and control unit of power grid equipment and power equipment of mining and industrial enterprises.

Equipped with the special pushing mechanism, it composes the handcart unit. APG seal technology or insulating cylinder is adopted for the primary part, to protect the vacuum arc-extinguishing chamber and other main circuit parts from being bumped, affected by dust and condensation. It is applicable for the site required for the frequent operation with rated operating current, or with multiple breaking of short-circuit current. It is also applicable for the site with severe environmental conditions.



Model Specification

Vyf1-24 The New-Generation Indoor Vacuum Circuit Breaker



Main Technical Parameters

1.Technical Data of VYF1-24(VS1-24) Vacuum Circuit Breaker

Serial No. Item Unit Numerical Value
1 Rated voltage kV 24
2 Rated frequency Hz 50
3 Rated current A 630,1250,2500,3150
4 Rated short-circuit breaking current kA 25,31.5
5 Rated short-circuit making current kA 63,80
6 Rated peak withstand current kA 63,80
7 Rated short-time withstand current(4 seconds) kA 25,31.5
8 Rated 1 min power-frequency withstand voltage kV 65(phase-to-phase,to earth)/79(fracture)
9 Rated lightning impluse withstand voltage kV 125(phase-to-phase,to earth)/145(fracture)
10 Rated operation sequence O-0.3s-CO-180s-CO
11 Main loop resistance μΩ ≤60(630A),≤50(1250A above)
12 Clearance betweent open contacts of conductive circuit resistance(including contact arm) of each phase mm 13±1
13 Allowable wear thickness of contact mm 3
14 Average opening speed m/s 0.8±0.2
15 Average closing speed m/s 1.4±0.3
16 Closing time ms 35-70
17 Opening time ms 20-50
18 Contact closing bounce time ms ≤2
19 Three-phase opening and closing asynchronization ms ≤1
20 Phase-to-phase center distance mm 275




2.Technical Data of Energy Storage Motor

Name Main Parameters
Rated operating voltage(V) AC, DC 220V AC,DC 110V/AC 100V
Rated output power(W) 65/80(rated current 2500 above)
Normal operating voltage range 85%-110% of rated voltage
Energy storage time under rated operating voltage(S) ≤15






3.Technical Data of Opening, Closing Coil

Name Main Parameters
Rated operating voltage(V) AC, DC 220V AC,DC 110V/AC 100V
Rated operating current(A) 1.0 2.0
DC resistance value of coil(Ω) 220 55
Normal operating voltage range of opening Reliable opening under the rated operating voltage of 65% to 120%; it shall not open in case of rated operating voltage less than 30%
Normal operating voltage range of closing Reliable closing under the rated operating voltage of 80%-110%




4.Structure and Characteristics

The mature APG technology is adopted for VYF1-24(VS1-24) series vacuum circuit breaker to seal the vacuum arc-extinguishing chamber and main confuctive circuit in the insulating cylinder, thoroughly solving the problem that the withstand voltage level is reduced due to environmental influence, guaranteeing the vacuum arc-extinguishing chamber can be applied to the severe environment.

VYF1-24(VS1-24) includes the domestic first-rate vacuum arc-extinguishing chamber. It has strong breaking capacity and high reliability. It meets the requirements of actual application, realing the free maintenance of primary part. The mature spring operation mechanism is adopted. Its performance is stable , reliable and of long service life. Its operation is simple and it has excellent anti-rust capacity. In the service period, only very little maintenance is required.

The type test shall be completed as per the extended electrical endurance level E2, extended mechanical life level M2 and very low restrike probability level C2 of capacitative current in GB 1984-2003. The consistency o size of tooling used for product assembly shall be guaranteed. Before all products are all delivered out of the factory, the cabinet pushing test of standard cabinet shall be carried out, guaranteeing the interchangeability and universality of product.

All products shall be performed with hundreds of mechanical operation running-in tests before being delivered out of the factory, ensuring the product performance is at the most stable stage.

The advanced imported test equipment is used to truly record the no-load mechanical characteristics of each product, and such characteristic curves shall be provided to the user, ensuring the reliability of product quality.

Vyf1-24 The New-Generation Indoor Vacuum Circuit Breaker

Vyf1-24 The New-Generation Indoor Vacuum Circuit Breaker Vyf1-24 The New-Generation Indoor Vacuum Circuit Breaker







Contact us if you need more details on Vacuum Circuit Breaker. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Indoor Switchgear、Protectors. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Indoor HV Vacuum Circuit Breaker

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