ZW32-12G/630A Outdoor High Voltage Vacuum Circuit Breaker

ZW32-12 series outdoor high voltage vacuum circuit breaker is suitable for three-phase power systems with rated voltage 12kV and AC 50Hz, serving as section switches or tie switches in urban networks, and as outgoing switches in outdoor substations of rural distribution systems, for making and breaking load currents and short-circuit currents. Mainly applicable to power equipment renovation and construction in rural networks, urban networks, mines, and railways.

Product Details

ZW32-12G/630A Outdoor High Voltage Vacuum Circuit Breaker

ZW32-12G/630A Outdoor High Voltage Vacuum Circuit Breaker | 12kV Rural and Urban Distribution Protection Equipment

I. Overview

ZW32-12G/630A Outdoor High Voltage Vacuum Circuit Breaker is suitable for three-phase power systems with rated voltage 12kV and AC 50Hz, serving as section switches or tie switches in urban networks, and as outgoing switches in outdoor substations of rural distribution systems, for making and breaking load currents and short-circuit currents. Mainly applicable to power equipment renovation and construction in rural networks, urban networks, mines, and railways.

II. Model and Meaning

ZW32-12G/630A Outdoor High Voltage Vacuum Circuit Breaker Model Meaning Diagram

III. Structure and Features

Fully sealed structure: Good sealing performance helps improve moisture and anti-condensation performance, suitable for high temperature and humid areas, effectively avoiding mechanism rust caused by long-term outdoor operation. Compact and reasonable overall structure, small size, light weight (less than 80kg).
Vacuum interrupter: Stable and reliable interrupting performance, small contact wear, large short-circuit interrupting current up to 20kA, no combustion or explosion hazard, safe and maintenance-free.
Outdoor-specific epoxy resin sleeve: Enhances insulation stability under humid conditions, resists erosion caused by ultraviolet radiation, suitable for environments with high weather resistance requirements and harsh operating conditions.
Operating mechanism: Novel, simple, reliable operation, mechanism life up to 10,000 times or more. Convenient for manual or electric operation, also can be remote controlled.
Multi-functional: Can be equipped with two-phase or three-phase outdoor current transformers to meet control and measurement requirements. With controller can achieve remote control and monitoring.
Equipped with isolating switch: This circuit breaker can be equipped with an isolating switch, with a reliable mechanical interlocking device between the isolating switch and the circuit breaker body.

Overview and Main Technical Parameters

ZW32-12 series pole-mounted outdoor high voltage vacuum circuit breaker is a three-phase AC 50Hz outdoor high voltage switchgear with rated voltage 12kV. Suitable for interrupting and closing load current, overload current and short-circuit current in urban or rural distribution systems.

Item		Unit	ZW32-12G/T400-12.5	ZW32-12G/T630-16	ZW32-12G/T630-20
Rated Voltage		kV	12
Rated Current		A	400	630	630
Rated Short-circuit Breaking Current		kA	12.5	16	20
Rated Short-circuit Making Current (Peak)			31.5	40	50
Rated Peak Withstand Current			31.5	40	50
Rated Short-time Withstand Current			12.5	16	20
Rated Short-time Duration		s	4
Rated Insulation Level	Lightning Impulse Withstand Voltage (Peak)	kV	Between phases and to earth: 75, Across isolating gap: 85
	1min Power Frequency Withstand Voltage		Between phases and to earth: 42, Across isolating gap: 48
Rated Operating Sequence		-	Open-0.3s-Close-Open-180s-Close-Open (electric mechanism)
Rated Short-circuit Current Breaking Times		times	30
Mechanical Life			10000
Rated Operating Voltage (Opening/Closing Coils)		V	DC220, 110, AC220
Allowable Cumulative Wear Thickness of Fixed and Moving Contacts		mm	3
Overcurrent Release Rated Current		A	5
Current Transformer Ratio		-	200/5, 400/5, 600/5
Contact Gap		mm	9±1
Contact Overtravel			2±0.5
Average Opening Speed		m/s	1.2±0.3
Average Closing Speed			0.6±0.2
Opening Time		ms	30-60
Closing Time			20-40
Closing Bounce Time			≤2
Three-phase Opening/Closing Synchronism			≤2
DC Resistance of Each Phase Circuit		μΩ	≤80
Charging Motor	Rated Voltage	V	220
	Rated Power	W	200
	Charging Time	s	≤8
Isolating Switch	Circuit Resistance (between circuit breaker terminal block and isolating switch incoming plate)	μΩ	≤120
	Three-phase Blade Center Deflection during Closing	mm	≤2
	Three-phase Blade Opening/Closing Synchronism Deviation		≤2
	Insulation Distance from Conductive Parts to Earth		≥160
	Isolating Gap Opening Distance		≥200
Weight		kg	125

Outline Drawing

ZW32-12G/630A Outdoor High Voltage Vacuum Circuit Breaker Outline Drawing

V. Installation Diagram

ZW32-12G/630A Outdoor High Voltage Vacuum Circuit Breaker Installation Diagram 1

ZW32-12G/630A Outdoor High Voltage Vacuum Circuit Breaker Installation Diagram 2

ZW32-12G/630A Outdoor High Voltage Vacuum Circuit Breaker | 12kV Rural and Urban Distribution Protection Equipment

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