Product Overview
The ZN63(VS1)-24 is a new generation 24kV indoor vacuum circuit breaker, employing solid-insulated poles and an optimized operating mechanism. This design ensures maintenance-free operation, high insulation reliability, and extended mechanical endurance.
Designed for air-insulated switchgear, it excels in frequent operation and auto-reclosing applications. It is fully interchangeable with VD4 and VEP switches, and compatible with armored withdrawable switchgear models like ASN2, AMS, and ZSI, making it the ideal drop-in replacement for your projects.
Technical Specifications
|
No. |
Item |
Unit |
Parameter |
|||
|
1 |
Rated Voltage |
kV |
24 |
|||
|
2 |
Rated Insulation Level |
Power-Frequency Withstand Voltage for 1 min (rms value) (Between Phases, Phase-to-Earth, Across Vacuum Interrupter) |
kV |
Between phases, phase-to-earth / across the interrupter |
65/79 |
|
|
Lightning Impulse Withstand Voltage (Peak Value) (Between Phases, Phase-to-Earth, Across Vacuum Interrupter) |
125/145 |
|||||
|
3 |
Rated Frequency |
Hz |
50 |
|||
|
4 |
Rated Current |
A |
630/1250/1600/2000/2500/3150 |
|||
|
5 |
Rated Short-Circuit Breaking Current |
kA |
20 |
25 |
31.5 |
|
|
6 |
Rated Short-Time (4s) Withstand Current |
kA |
20 |
25 |
31.5 |
|
|
7 |
Rated Short-Circuit Making Current |
kA |
50 |
63 |
80 |
|
|
8 |
Rated Peak Withstand Current |
kA |
50 |
63 |
80 |
|
|
9 |
Rated Operating Sequence |
O-0.3s-CO-180s-CO |
||||
|
10 |
Rated Number of Operations at Rated Short-Circuit Breaking Current |
times |
20 |
|||
|
11 |
Rated Cable-Charging Breaking Current |
A |
32 |
|||
|
12 |
Rated Single Capacitor Bank Breaking Current |
A |
630 |
|||
|
13 |
Rated Back-to-Back Capacitor Bank Breaking Current |
A |
400 |
|||
|
14 |
Mechanical Endurance |
times |
10000 |
|||
|
15 |
Permitted Cumulative Wear Thickness of Moving and Fixed Contacts |
mm |
3 |
|||
Core Advantages
- Solid-Insulated Reliability: Employs solid-insulated poles for the main conductive circuit. Highly resistant to harsh environments, ensuring maintenance-free operation and extended lifespan.
- Seamless Drop-in Replacement: Fully interchangeable with VD4 and VEP switches. Compatible with major armored switchgear (ASN2, AMS, ZSI), reducing retrofit time and engineering costs.
- Heavy-Duty Performance: Rated 24kV with short-circuit breaking up to 31.5kA. Capable of 20 rated short-circuit breaking operations and 10,000 mechanical operations for long-term stability.
- Versatile Configurations: Available in both fixed-mounted and withdrawable (truck-type) configurations to match different switchgear designs and project requirements.
Model Designation
ZN63 - 24 / □ - □
ZN -- Vacuum Circuit Breaker
63 -- Design Code
24 -- Rated Voltage (kV)
□ -- Rated Current (A)
□ -- Rated Short-Circuit Breaking Current (kA)
Hot Tags: zn63(vs1)-24 series indoor ac high voltage vacuum circuit breaker, China zn63(vs1)-24 series indoor ac high voltage vacuum circuit breaker manufacturers, suppliers, factory, indoor vacuum circuit breaker, ZN85 40 5 Series Indoor High Voltage Vacuum Circuit Breaker, ZN63 VS1 24 Series Indoor AC High Voltage Vacuum Circuit Breaker, ZN63 VS1 12 Series Indoor High Voltage Vacuum Circuit Breaker, ZN63 VS1 12 Series Indoor Epoxy Cast Pole Vacuum Circuit Breaker, ZN28 12 Series Indoor High Voltage Vacuum Circuit Breaker