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Dowei Electric Dead Tank Circuit Breaker LW24

Dowei Electric Dead Tank Circuit Breaker LW24

Product catalog summary

General Description:
The document outlines the specifications and standards for Dead Tank Circuit Breakers manufactured by Ningbo Dowei Electric Co., Ltd. These circuit breakers comply with international standards such as IEC 62271, ANSI C37 series, and are certified by ISO 9001, KEMA, CESI, CE, TUV, UL, and ASTA. They are designed to withstand seismic activities and adhere to structural standards like ASTM A325 and ANSI/AISC 360. The breakers are suitable for high altitudes up to 5000 meters and offer reliable and flexible solutions for high current switching.

Typical Specification:
The document provides detailed specifications for SF6 Gas Dead Tank Circuit Breakers ranging from 40.5kV to 363kV. Key parameters include:

Rated Voltage: 40.5 to 363 kV
Rated Frequency: 50/60 Hz
Rated Continuous Current: 3150 to 4000 A
Rated Short Circuit Breaking Current: 31.5/40 to 50 kA
Rated Short Circuit Making Current: 80/100 to 125 kA
Rated Peak Withstand Current: 80/100 to 125 kA
Short Line Fault Breaking Current: 36/30 to 45/37.5 kA
Out of Phase Breaking Current: 10 to 12.5 kA
Rated Power-Frequency Withstand Voltage: 95 to 510 kV
Lightning Impulse Withstand (BIL): 185 to 1175 kV
Type of Mechanism: Spring or Hydraulic
Mechanical Endurance: ≥5000 operations
Rated Operating Sequence: O-0.3s-CO-180s-CO
Close Time: ≤100 ms
Open Time: ≤30 ms
Breaking Time: ≤60 ms
Three Phase Operation: 3p or 1p
Rated SF6 Gas Pressure: 0.5 to 0.6 Mpa
Weight: 1550 to 100000 kg

Catalog excerpts

Dowei Electric Dead Tank Circuit Breaker LW24-2

Dead Tank Circuit Breaker General Description: • IEC 62271, ANSI C37.04, C37.06, C37.09 • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 62271 & IEEE C37, ~ 5000m • High current switching capability, Reliable and Flexible solutions SF6 Gas Dead Tank Circuit Breaker 40.5~363kV Rated continuous current A Rated short circuit breaking current kA Rated short circuit making current kA Rated peak withstand current kA Short line fault breaking current kA Out of phase...

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