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ZW68-12 Type Primary and Secondary Fusion Column Circuit Breaker
Rated main circuit current
Rated current
The rated voltage
Application
The primary components are fully enclosed within an aluminum alloy housing, with built-in isolating switches, circuit breakers, current transformers, voltage sensors, operating mechanisms, etc., significantly reducing the installation space of the product and making on-site installation and maintenance easier. The use of a rotating arc chamber combined with environmentally friendly gas for comprehensive vacuum arc extinction is more environmentally friendly, with better insulation and arc extinction performance, and the operation is not affected by environmental factors, improving arc extinction efficiency and electrical life. The product housing is made of aluminum alloy die-casting, with a one-piece molding, lighter weight, and better sealing effect.
Technical specification
Main Technical Parameters Table of ZW68-12 Primary and Secondary Integrated Pole-Mounted Circuit Breaker

ZW68-12:
Rated voltage (KV): 12
Rated frequency (Hz): 50
Rated current (A): 630
Rated short-circuit breaking current (kA): 20
Rated peak withstand current (peak value) (kA): 50
Rated short-time withstand current (4S) (kA): 20
Rated short-circuit making current (peak value) (kA): 50
Mechanical lifespan (times): 10,000
Rated short-circuit breaking current and breaking times (times): 30
1-minute power frequency withstand voltage, dry type (phase-to-phase, phase-to-ground/open circuit) (kV): 42/48
1-minute power frequency withstand voltage, wet type (to ground, external insulation) (kV): 34
Lightning impulse withstand voltage (phase-to-phase, phase-to-ground/open circuit) peak value (kV): 75/85
Rated main circuit resistance (μQ): ≤200
Partial discharge (PC): <20
Rated operation sequence: O-0.3S-CO-180S-co
Rated operating voltage (V): DC220, 110, 48, 24; AC220, 110
Annual leakage rate (in %): ≤0.05%
Rated pressure (MPa): 0.02 (20℃)
Moisture content of dry air (20℃) (μL/L): ≤150 (handover acceptance value), ≤300 (operational allowable value)

Download
点击下载 附件:ZW68-12型一二次融合柱上断路器.pdf    大小: 35.58MB 下载:
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