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Vacuum Circuit Breaker ZW7 Series
Designed for control and protection in outdoor 35kV power transmission and transformation systems, this product is also suitable for normal operation and short-circuit protection in urban/rural distribution networks and industrial plants.
The product adopts a silicone rubber post-type structure, with an option for high pollution-resistant porcelain insulators. The vacuum interrupter is housed in the upper insulator, while the lower section consists of silicone rubber support. The operating mechanism is installed in the mid-lower section, resulting in a more compact and lightweight design compared to side-mounted configurations, which facilitates transportation and installation.
Excellent sealing performance, aging resistance, high temperature tolerance, non-flammability, explosion-proof design, extended service life, and convenient installation and maintenance.
Product Features
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- The protection CT, zero-sequence CT and zero-sequence voltage sensor withunified parameters have the characteristics of wide measurement range, high measurement accuracy and high reliability.
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- Adopt solid sealed vacuum interrupter, encapsulated by silicone rubber (as insulation and buffer).
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- The spring operating mechanism has been miniaturized and performanceoptimized, and its action reliability is much higher than that of the traditional domestic spring mechanism.
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- Meet environmental protection requirements: no oil and SF6 gas, high anti-fouling grade, beautiful, light, easy to transport.
Technical Parameter
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- Rated Voltage
- 40.5 kV
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- Rated Current
- 1250/1600/2500 A
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- Rated Frequancy
- 50 Hz
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- Rated Insulation Level
- 95/118 kV
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- Rated Short-Circuit Breaking Current
- 20/25/31.5 kA
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- Rated Short-Circuit Making Current (Peak)
- 50/63/80 kA
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- Rated Short-Circuit Withstand Current
- 20/25/31.5 kA
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- Rated Short-circuit Operations at Short-Circuit Current
- 30 Time
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- Rated Short-Circuit Duration
- 4 s
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- Rated Operating Voltage & Auxiliary Circuit Rated Voltage
- DC220 AC220 AC/DC220 V
