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Medium & High Voltage Device

ZW20 outdoor vacuum circuit breaker

ZW20 type outdoor vacuum circuit breaker is a 12 kV post switchgear. it adopts vacuum arc extinguishing and SF6 insulation technology. it can be widely used in the distribution system of urban and rural power network. it can be used as the protection of sub-load current, combined load current, overload current and short circuit current. Cooperate with feeder automation terminal to realize feeder automation and distribution automation, support a variety of communication modes and communication protocols. Circuit breaker built-in capacitive energy recovery device, no additional power supply voltage transformer.

l Through a full set of type tests

l The pole column is made of hydrophobic epoxy resin, which is safe and environmentally friendly

l Manual or electric spring operating mechanism, long electrical and mechanical life

l Digital signal transmission anti-jamming, extendable

l Can be used as recloser, segmenter

l Support for three-stage current protection and multiple feeder automation modes

l All outdoor design, circuit breaker good sealing, reliable operation in wet, high cold, high dry heat, high pollution and other environments.

l Class E2、M2、C2 Outdoor Vacuum Circuit Breaker
l Electronic current/voltage transformers with high accuracy

l Single-phase grounding fault detection

l Line loss measurement function

l High reliability vacuum interrupter

Model			ZW20
Rated voltage			kV 12
Rated Current			630A
Rated frequency			50Hz
Rated power frequency withstand voltage		Relative/interphase	42 kV
		Fracture zone	48 kV
Rated impulse voltage	lightning withstand	Relative/interphase	75 kV
		Fracture zone	85 kV
Rated short-circuit breaking current			20 kA
Rated short-time withstand current			20kA ,4s
Rated operational sequence			O-0.3s-CO-180s (15s)-CO
Mechanical operating life			10,000
Operating conditions			-30~+45℃
Protection level			IP 65
Feeder Automation Terminal
Protection function			Interphase fault/single-phase ground fault/break-line fault detection
Control functions			Switching Operation / Remote Local Switching / reclosing
Measurement monitoring function			Line operation status/battery voltage/fault recording
Communication function			GPRS/ Fiber / Ethernet / Power Broadband Carrier etc

Size	L×H×W=1186 mmL×H×W=831 mmL×H×W=822 mm
Weight:	About 120 kg

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