Model NO.: ZW7-40.5
Poles Number: 3
Type: Circuit Breaker
Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
Certification: ISO9001-2000, CCC
Trademark: CNHK
Transport Package: Wooden Package
Specification: ZW7-40.5 35kv
Origin: China
ZW6-40.5 (40.5kV)Â Vacuum Circuit Breaker, Outdoor Type, 1.General
1.1Ratings: Rated voltage up to 40.5kV, Rated current up to 2000A, AC50HZÂ
1.2 Application: for making and breaking load current, overload current and short-circuit protection of electric systems and equipments.
 1.3 Standard: IEC62271-100
2. Type and Interpretation:
Z Â : Â Vacuum circuit breaker
W Â :Â Outdoor
7Â -Â :Design code
40.5: Breaking voltage(kV)
3. Working Condition
3.1 Ambient air temperature: -25ºC~ +40ºC
3.2 Altitude: ≤2000m
3.3 Pollution level. ≤III
3.4 Wind speed: 34m/s (Equal to 700Â over cylindrical surface)
3.5 The external shocking and earthquake could be neglected.
3.6 The influence of sunshine radiation when 1000w/m should be taken into consideration.
3.7The amplitude of electromagnetic interference in the secondary system
Note: Customized products for other special working conditions are available on your requirements.
4. Main Technical Parameter
| Item | Unit | Data | ||||
| Rated voltage | kV | 40.5 | ||||
| Rated insulation level | 1min power frequency with stand voltage | Dry test | kV | 95 | ||
| Wet test | kV | 80 | ||||
| Rated lightning impulse withstand voltage | kV | 185 | ||||
| Rated frequency | Hz | 50 | ||||
| Rated current | A | 1250 | 1600 | 2000 | ||
| Rated short-circuit breaking current | kA | 20 | 25 | 31.5 | ||
| Rated short-circuit making current(peak) | 50 | 63 | 80 | |||
| Rated short-time withstand current | kA | 20 | 25 | 31.5 | ||
| Rated peak withstand current | 50 | 63 | 80 | |||
| Rated duration of short-circuit | s | 4 | 4 | 4 | ||
| Rated operation sequence | Â | O-0.3s-CO-180S-CO* | ||||
| Mechanical life(grade M2) | times | 10000 | ||||
| Electrical life | Â | E2 class | ||||
| Overall breaking time | s | Â | ||||
| Rated breaking current of cables charging | A | 50 | ||||
| Rated breaking times of short-circuit breaking current | times | 20 | ||||
| Peak value of TRV | kV | 114 | ||||
| Rated operating voltage and auxiliary circuit voltage | V | DC220,110,24 AC220,110,24 |
||||
| Weight | kg | 800 | ||||
5. Overall and Installation Dimension
Â
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