Products
24kV Indoor Withdrawable Vacuum Circuit Breaker
Model:VS1-24 withdrawable
Choose TaiLi Electric VS1-24 withdrawable vacuum circuit breaker for 24kV medium-voltage systems. TaiLi Electric VS1-24 features enhanced insulation and 1000mm cabinet fit, ensuring safe operation in industrial and renewable energy applications.
TaiLi Electric VS1-24 withdrawable vacuum circuit breaker (hereafter “this breaker”) is a 24kV, three-phase, 50Hz indoor switchgear device. Unlike 12kV products, 24kV systems demand higher insulation levels, creepage distances, and phase spacing. This breaker adopts enlarged solid-insulated poles and optimised electric field design, achieving safe and reliable switching within 1000mm cabinets. TaiLi Electric VS1-24 is widely used in wind farm step-up stations, PV collector substations, medium-sized substations, and frequent-operation industrial sites.
Key Features & Specifications
- Enhanced Solid-Insulated Poles for 24kV Class – The vacuum interrupters and main circuits are fully encapsulated in high-purity epoxy, with creepage distance ≥480mm and phase spacing of 210mm (or 250mm for high-current versions), ensuring stable performance even in polluted or humid environments.
- Integrated Spring Operating Mechanism– Equipped with a high-reliability spring mechanism, supporting both motor and manual charging, with optimised opening/closing speeds for 24kV system recovery voltage characteristics.
- Designed for 1000mm Withdrawable Cabinets– Precision-guided truck mechanism ensures smooth insertion/withdrawal and full interchangeability, simplifying maintenance and spare parts management.
- Reliable Electrical & Mechanical Interlocks– Prevents truck movement under load, includes anti-pumping and undervoltage lockout functions for enhanced safety.
- Long Life, Low Maintenance– Mechanical endurance ≥20,000 operations, suitable for frequent daily switching. Solid-insulated poles eliminate regular cleaning and anti-pollution treatment.
Table of Technical Parameters：
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Item |
Unit |
Technical Specification |
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|
Rated voltage |
Kv |
24 |
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|
Rated insulation level |
Peak value of rated lightning impulse withstand voltage |
125 |
||||
|
1 min power-frequency withstand voltage |
65 |
|||||
|
Rated short-circuit breaking current |
kA |
20 |
25 |
31.5 |
40 |
|
|
Rated current |
A |
630、1250 |
630、1250、1600、2000、2500、3150 |
1250、1600、2000、2500、3150 |
||
|
Rated short-time withstand current(r.m.s.) |
kA |
20 |
25 |
31.5 |
40 |
|
|
Rated peak withstand current |
50 |
63 |
80 |
100 |
||
|
Rated short-circuit making current |
50 |
63 |
80 |
100 |
||
|
Rated operating sequence |
|
O-0.3s-CO-180s-CO O-180s-CO-180s-CO (40kA) |
||||
|
Rated short-time withstand duration |
s |
4 |
||||
|
Mechanical endurance |
operations |
20000 |
10000 |
|||
Overall Dimension Drawing (for 1000mm Wide Cabinet)
|
Rated current |
A |
630 |
1250 |
1600 |
2000 |
2500 |
3150 |
|
Rated short-circuit breaking current |
kA |
20，25，31.5 |
20，31.5，40 |
31.5，40 |
31.5，40 |
31.5，40 |
31.5，40 |
|
Matched static contact dimensions |
mm |
∅35 |
∅49 |
∅55 |
∅79 |
∅109 |
∅109 |
|
Phase-to-phase distance |
mm |
275±1.5 |
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Workshop
Why Choose TaiLi Electric
· 24kV expertise– Proven experience in wind and PV projects, familiar with special insulation and grid-code requirements.
· Fast delivery – Standard models in stock; custom orders in 15 working days.
· Full support – Sizing, design, on-site commissioning, and 24/7 warranty assistance.
FAQ
Q1: Can it be used above 1000m altitude?
A: Yes, but insulation levels must be corrected (approx. +8%~13% per 1000m). We reserve insulation margin and can customise upon providing altitude details.
Q2: Is it suitable for frequent switching (e.g., 5 times/day)?
A: Absolutely. Standard mechanical life is 20,000 operations, ideal for daily PV/wind switching. Upgraded mechanisms for 60,000 or 100,000 operations are also available.
Q3: Why must the cabinet be 1000mm wide?
A: 24kV requires larger creepage and clearance distances. An 800mm cabinet cannot ensure safe insulation and is not type-tested. Using non-standard widths poses serious safety risks.
Q4: Can it be remotely operated via motorised truck?
A: Yes. We offer motorised truck options with local/remote control and IEC 61850 integration for unmanned substations.
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Contact Info
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Address
No.81, Jingsan Road, Economic Development Zone, Yueqing City, Zhejiang Province, China
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For inquiries about transformer, switchgear, medium voltage circuit breaker or price list, please leave your email to us and we will be in touch within 24 hours.
