ZW32-12F Outdoor AC High Voltage Vacuum Boundary Circuit Breaker

Outdoor AC high-voltage vacuum demarcation circuit breaker integrating protection, sectionalizing and intelligent control for 10kV distribution networks.

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Overview

The ZW32-12F outdoor AC high-voltage vacuum demarcation circuit breaker (hereinafter referred to as the demarcation circuit breaker) is a multifunctional intelligent device that integrates a vacuum circuit breaker, a demarcation circuit breaker, and a sectionalizer. It primarily consists of the vacuum demarcation circuit breaker, an intelligent demarcation controller, and an external voltage transformer (Note: dual-side PTs are optional in distribution network automation ring lines). This product is widely used in 10kV urban and rural overhead ring lines as a sectionalizing disconnector, tie switch, and automated switchgear for load distribution in ring lines. It can also serve as a demarcation switch (commonly known as a watchdog) in branch lines supplying large users and as a demarcation circuit breaker and sectionalizer in feeder overhead distribution networks. The vacuum demarcation circuit breaker features remote management, protection control, and communication capabilities. It can reliably detect milliampere-level zero-sequence currents and phase-to-phase short-circuit fault currents within the demarcation boundary, automatically clearing single-phase grounding faults and phase-to-phase short-circuit faults.

This product manual covers the reference standards, operating environment conditions, models and rated parameters, structural features, working principles, ordering instructions, and methods of operation, installation, use and maintenance of the boundary circuit breaker.

Model meaning

ZW32-12F Outdoor AC High Voltage Vacuum Boundary Circuit Breaker

Main technical parameters

Project			Unit	Parameter
Rated voltage			kV	10
Maximum operating voltage			kV	12
Rated insulation level	1min power frequency withstand voltage	Dry test	kV	42
Rated insulation level	1min power frequency withstand voltage	Wet test	kV	34
Rated insulation level	Lightning impulse withstand voltage		kV	75
Rated current			A	630
Rated short-circuit breaking current			kA	20
Rated capacitor bank breaking current			A	400/630
Rated operating sequence				0-0.3S-CO-15S-CO-15S-CO
Rated short-circuit breaking current breaking times			times	20
Rated short-circuit making current (peak value)			kA	50
Rated peak withstand current			kA	50
Rated short-time withstand current			kA	20
Rated short-circuit duration			s	4
Full break time			ms	≤100
Trip time (shunt trip)	Maximum operating voltage		ms	15~50
Trip time (shunt trip)	Rated operating voltage		ms	15~50
Trip time (shunt trip)	Minimum operating voltage		ms	30~60
Closing time			ms	25~60
Mechanical life			times	10000
Rated operating voltage			V	AC220
Operating mechanism				CT37-D spring mechanism
Allowable wear thickness of moving contact			mm	3
Weight			kg	110 (135 with disconnector)
Energy storage motor rated input power			W	≤250
Overcurrent release	Rated current		A	5
Overcurrent release	Tripping accuracy		%	±10