ZW7-40.5 Outdoor Vacuum Circuit Breaker
Technical specification
|
No. |
Item |
Units |
Parameters |
||
|
1 |
Rated voltage |
KV |
40.5 |
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|
2 |
Rated insulation level |
Power frequency withstand voltage |
Dry |
95 |
|
|
Wet |
80 |
||||
|
Lightning impulse withstand voltage (peak) |
|
185 |
|||
|
3 |
Rated current |
A |
1250、1600、2000 |
||
|
4 |
Rated short-circuit breaking current |
KA |
20、25、31.5 |
||
|
5 |
Rated operating sequence |
|
O-0.3s-CO-180s-CO |
||
|
6 |
Rated short-circuit breaking current breaking times |
Times |
12 |
||
|
7 |
Rated short-circuit closed current(peak) |
KA |
50、63、80 |
||
|
8 |
Rated peak withstand current |
||||
|
9 |
Rated short-time withstand current |
KA |
20、25、31.5 |
||
|
10 |
Rated short-circuit duration |
S |
4 |
||
|
11 |
Average opening speed |
m/s |
1.5±0.2 |
||
|
12 |
Average closing speed |
0.7±0.2 |
|||
|
13 |
Contact closing bounce duration |
s |
≤2 |
||
|
14 |
Three phase closing and opening synchronism |
≤2 |
|||
|
15 |
Opening time |
≤150 |
|||
|
16 |
Closing time |
≤60 |
|||
|
17 |
Mechanism life |
Times |
10000 |
||
|
18 |
Rated operating voitage and auxiliary circuit rated voltage |
V |
Dc220、110、24 |
||
|
Ac220、110、24 |
|||||
|
19 |
Phase loop DC resistance(without current transformer) |
uΩ |
≤100 |
||
|
20 |
Permitted accumulate wear-thickness of dynarmic and static contact |
mm |
3 |
||
|
21 |
Weight |
kg |
800 |
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Product Model
Dimension
Product Functions
◆Comprehensive Current Switching: Safely breaks and closes load currents, over currents, and short-circuit currents in 40.5kV systems.
◆Vacuum Arc Extinguishing: Utilizes advanced vacuum arcing technology for high breaking capacity and long electrical endurance.
◆Integrated Current Measurement: Built-in current transformers with 0.2 accuracy class enable three-phase mutual protection and precise monitoring.
◆Condensation Control: Built-in condensation controller maintains reliable circuit breaker operation by regulating internal temperature.
Applicable Environment
◇Temperature Range: Reliable operation in ambient temperatures from -30℃ to +40℃.
◇Installation Altitude: Designed for elevations up to 2000 meters.
◇Wind Resistance: Engineered for wind speeds up to 34m/s.
◇Seismic Resistance: Capable of withstanding seismic intensity up to 8 degrees.
◇Temperature Stability: Designed for maximum temperature differentials not exceeding 25℃.
Product Highlights
◆Extended Mechanical Life: Rated for 10,000 mechanical operations, ensuring long-term reliability and reduced lifecycle costs.
◆True Maintenance-Free Operation: Simple construction with long maintenance cycles minimizes downtime and service requirements, ideal for remote or hard-to-access installations.
◆Superior Insulation & Pollution Resistance: Excellent insulation performance with good anti-pollution ability, making it suitable for industrial areas and coastal environments.
◆Safe Operation Design: Vacuum interruption eliminates fire and explosion risks, while spring or electromagnetic mechanisms provide mechanically sound, frequent operation capability.
◆High Altitude Capability: Standard design supports installations up to 2000 meters, with options for higher elevations, making it ideal for mountainous regions and plateau areas.