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Dis Sub-12 Environmental protection gas switchgear

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Ring Main Unit

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Dis Sub-12 Environmental protection gas switchgear

DETAIL

Product Introduction

The problem of gas leakage and pollution can be solved by replacing sf6 with safe and environmentally friendly mixed gas in gas tank. It has high level of operation security and is used as the core unit of distribution network. The equipment is mainly composed of modular components such as sealed switching gas tank, cable chamber base, mechanical room and instrument room. Circuit breaker, load switch, three-station isolating switch, environment-friendly insulation bush and other core components are sealed in the gas tank. The structure is fully sealed and maintenance-free.
Vacuum circuit breaker and vacuum load switch adopt general main structure design, which can better ensure the consistency of switch body: closing and opening of main circuit, the spring mechanism is simple and reliable, the knob is adopted. And the three-station isolating grounding switch adopts mature knife gate structure, which has the characteristics of preventing the risk of connection the in the main circuit with electricity.
It is safe to use, environmental friendly, intelligent designed, convenient to use, maintenance-free, and the whole cost is low.

Product Features

Maintance Free

Dry air, movable and fixed contacts, arc-extinguishing chamberand busbar are sealed in one gas box. Maintance-free life is 30years.

Full-Sealed And Insulated In-Out Cables

Adopting corresponding full-sealed and insulated cable connectors as the requirements of users. Electrified display functions can show status of each circuit exactly.

Modularized And Expansible

Combination of expansible modules, one box contain 5 modules maximally, and contain more modules through the extension of busbar.

Multiply Connection Schemes

As the requirement of users,adopting load switch,load switch+fusible cutout, or vacuum circuit breaker combinations to meet the needs of various incoming and feeder line circuit.

Visible Open Connects

Through the observation window on the panel, we can see the open connects of load switch or the positions of grounding switch.

Electric Operation, FTU

Adopting special voltage transformers to collect electricity, provide power supply for operating mechanism and ftu, and measure the signals of protective voltage. Install the special battery and charging modules to ensure the continuous power supply for operating power resource and ftu. Supporting ftu mechanism with corresponding functions according to the requirements of users.

Technical Parameter

Items	Units	Parameter
Commmom
Rated voltage	KV	12
Rated frequency	Hz	50
Power frequency withstand voltage	KV/min	42/48
Lighting impulse voltage		75/85
Arc duration	s	≥0.5
Protective degree of primary parts		IP67
Protective degree of cubicle		IP4X
Protective degree of compartment		IP2X
Operating power supply voltage	V	DC：24、48、110、220 AC：110、220
Bus system
Rated current	A	630（1250）
Rated short time withstand current up to	KA/s	20/4(25/4)
Rated peak value withstand current	KA	50(63)
Load switch
Rated current	A	630
Rated short time closing current	KA	50
Rated short time withstand current up to	KA/s	20/4
Mechanical life of load switch		M2 10000
Mechanical life of three-station disconnecting switch		M1 3000
Electric life of load switch		E2 100
Circuit breaker
Rated current	A	630（1250）
Rated short time breaking current	A	20(25)
Rated short time closing current	KA	50(63)
Rated short time withstand current	KA	20/4(25/4)
Mechanical life of circuit breaker	KA/s	M2 10000
Mechanical life of three-station disconnecting switch		M1 3000
Electric life of circuit breaker		E2
Duty cycle		O-0.3s-CO-180s-CO
Load switch-fuse combination
Rated current	A	200
Rated short time breaking current	KA	31.5
Rated short time closing current	KA	80
Rated switching current	A	3150