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ZN23-40.5 Indoor VCB 33kV 40.5kV Vacuum Circuit Breaker

ZN23 indoor vacuum circuit breaker

Additional information

Product Details:

ZN23-40.5 Indoor VCB 33-40.5kV Vacuum Circuit Breaker


General Introduction

ZN23-40.5 series handcart type indoor vacuum circuit breaker for the high life rated 40.5kA, three-phase AC 50Hz indoor high-voltage electrical equipment. Apply to industrial and mining enterprises, substation and transmission and distribution systems for control and protection switching; particularly suitable for metallurgy, electric arc steel-making industries, etc. frequent operation required, as a control and protection equipment. This product meets the GB 1984-89 “AC High Voltage Circuit Breaker” standard. Circuit breaker directly into the GBC-35, JYN1-35 cabinet, remove the plug can be installed separately


Working Conditions

1. Altitude: ≤1000m;

2. Air temperature: -15°C ~ +40°C;

3. Relative humidity: daily average is not more than 95%, saturated vapor pressure daily average is not more than 1.8kPa.

4. Earthquake intensity: not more than 8.

5. Installation places: No fire, explosion hazard, serious filthy places.

6. In the second system, the amplitude of induced electromagnetic interference does not exceed 1.6kv

7. Power condition: DC 110V, 220V; AC 110V, 220V

Technical Specification

No Item Units Technical parameters
1 Rated voltage kV 40.5
2 Thunder impulse withstand voltage(peak value) kV 185
3 lmin industrial frequency withstand voltage kV 95
4 Rated frequency Hz 50
5 Rated current A 1250,1600,2000
6 Rated short-circuit break current kA 25 31.5
7 Rated peak value withstand current kA 25 31.5
8 Rated peak value withstand current KA 63 80
9 Rated short-circuit duration time s 4
10 Rated short circuit breaking time ms
11 Rated short circuit closing current kA 80
12 Rated operation order 0-0.3s-C0-180s-C0
13 Time of closing brake ms 50~85
14 Time of breaking brake ms 40~85
15 Rated short-circuit current break and close times Times 20
16 Mechanical life-span Times 10000
17 Rated dropout current of condenser bank A 630
18 Rated power of energy-storage electric machine W 275
19 Rated volt of energy-storage motor V 25 ± 2
20 Storage time S ≤15
21 Closing and opening solenoid rated voltage V ≈220,110
22 Loss of pressure tripping device rated voltage V ≈220,110
23 Over current tripping device rated current A 5
24 Auxiliary switch rated voltage current A DC10


 Outline Drawing 

ZN23 vacuum circuit breakerZN23 40.5KV indoor VCB

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