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Rated Parameters
Table 1. Technical parameters of ZN63A(VS1)-12/24kV high voltage ac vacuum circuit breaker
No. | Item | unit | Parameter | |||
1 | Rated Voltage | kV | 12 | 24 | ||
2 | Rated Frequency | Hz | 50/60 | |||
3 | Rated lightning impulse withstand voltage(peak) | kV | 42 | 55 | ||
4 | Rated power frequency withstand voltage (1s)(Effective) | kV | 75 | 125 | ||
5 | Rated short-circuit breaking current | kA | 20,25,31.5,40 | |||
6 | Rated current | A | 630,1250,1600,2000,2500,3150 | |||
7 | Rated peak withstand current | kA | 50,63,80,100 | |||
8 | Rated short time withstand current | kA | 20,25,31.5,40 | |||
9 | Rated short circuit continuous time | s | 4 | |||
10 | Rated short-circuit on/off current | kA | 50,63,80,100 | |||
11 | Percentage of the dc component of the rated short-circuit breaking current | % | 35 | |||
12 | Rated operation sequence | O-0.3s-CO-180s-C | ||||
13 | Rated single/back-to-back capacitor bank breaking current | A | 630/400 | 630/400 | 630/400 | 800/400 |
14 | Rated short-circuit current breaking | times | 50 | 50 | 50 | 30 |
15 | Mechanical life | times | 10000 | |||
16 | Rated opening/closing operation voltage | V | AC/DC110 AC/DC220 | |||
17 | Rated voltage of energy storage motor | V | AC/DC110 AC/DC220 | |||
18 | Power frequency withstand voltage of secondary circuit | V | 2000 | |||
Table 2. Parameters for spring operation mechanism
No. | Item | unit | Parameter | |
1 | Rated operation voltage | Closing tripping coil | V | AC/DC110 AC/DC220 |
Opening tripping coil | ||||
2 | Working current | Closing tripping coil | A | 1.1 |
Opening tripping coil | ||||
3 | Power of energy-storage motor | W | 70,80 | |
4 | Working voltage of energy-storage motor | V | AC/DC220 | |
5 | Motor energy storage time | S | ≤15 | |
6 | Aux.contact | pair | 6NO,6 NC | |
Breaking capacity | AC/10A;DC/5A | |||
Rated Parameters
· In addition to meet the requirements of the design drawings, the assembled and adjusted circuit breakers shall also meet the requirements listed in table 3.
Table 3.Mechanical parameters after adjust the circuit breaker

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