Automatic sectionalizer, Gas insulated switchgea

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Product Name

SF6 GAS Insulated Auto Section Switch

Purpose

SF6 GAS Insulated automatic sectionalizer switch. Multi-point neutral grounding system. Can make or break malfunctioning areas of power distribution line. Minimizing the damage to customer facilities

Characteristic

Features of SF6 GAS Insulated automatic sectionalizer

High technic
Small and light, which makes it easy to use
Uses Puffer-type interruption method
Available in a wide range of temperatures -20℃ ~ 40℃
Safety
Safe operation in live wire
Operation and opening can be viewed by eye – prevents accidents during maintenance
Excellent arc interruption abilities
Easy installation
Small and light, which makes it easy for installation
Overload protection
In over current lock below 800A, it operates under inverse time characteristic.
Charged spring trip
When the product is undergoing breaking operation according to T-C curve due to overloading, or if the backup protection is operating even if ASS wasn’t broken as overload has been removed, zero voltage will occur. Then, ASS will instantaneously release to isolate the line downstream of ASS.
Inrush-current blocking function
When ASS has operated correctly (Current bigger than 10% but smaller than 100% of setting current) and has broken an opening motion and then proceeded to close, this function will stop ASS mistaking the inrush-current from downstream equipment and malfunctioning.
Over current locking funtion
If a malfunction which is bigger than rated interrupting current (900A) occurs, the prouct will product the switch. If the current is biger than the lock current (800A±10%), the switch will lock. GASS will then be interrupted in zero voltage after malfunctioning current is removed by backup protection.
Service condition
Surrounding temperature: maximum 40/Minimum 20℃
Altitude: less than 1,000m

Classification		Characteristics
Model		SGA-4 A
Rated Voltage		25.8 kV
Rated Current		400 A
Rated Short-time Current		12.5 kA (rms). 1s
Rated Short Circuit Making Current		32.5 kA (peak)
Rated Breaking Current		880 A
Pick-up current	Phase	50,70,100,140,200,300,400 A, BLOCK
	Ground	25,35,50,70,100,150,200 A, BY-PASS
Insulating Material		SF6 GAS

* Korean switchgear manufacturer, SnS Co., Ltd.

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SF6 GAS Insulated Auto Section Switch > For overhead line

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