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Interlocked Fuse Protection Gas Insulated Switchgear RMU

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Address: No. 25 Street , Hanghai Road, Zhengzhou,Henan,China

Contact name:Ken Chan (English)

Knkong Electric Co.,Ltd

Interlocked Fuse Protection Gas Insulated Switchgear RMU

Country/Region	china
City & Province	zhengzhou henan
Categories	Other Chargers

Product Details

GB ISO 12KV Gas Insulated Switchgear Medium Voltage Ring Main Unit

Product Introduction

General

The Fuse switch which named F-unit is a double-position load switch with an independent grounding switch, the tripping

device and the load switch farms the load switch-fuse combination.

The Grounding switch uses double mode, which can be grounded on both sides of the fuse at the same time, thus it ensures

that the fused fuse is not charged other the earthing switch is closed. Double grounding switch is interlocked mechanically, and primary ground operates grounding of two earthing switches of the same time.

The front cover of the fuse compartment is also mechanically interlocked with the earthing switch, and only when it is founded,

the fuse can be contacted.

Service environment

Air temperature: -35℃~+40℃
Humidity: Monthly average 95%; Daily average 90%.
Altitude:≤ 1000m (Up to 5000 m can be custom)
Ambient air not apparently polluted by corrosive and flammable gas, vapor, etc.
No frequent violent shake

Technical Data

No.	Item		Unit	Parameter
1	Rated voltage		kV	12	24	36
2	Rated frequency		Hz	50/60
3	Rated current		A	630(1250*)
4	1min Power frequency withstand voltage	wet	kV	38	50	70
4	1min Power frequency withstand voltage	dry	kV	48	60	85
5	Lightning impulse withstand voltage		kV	75	125/150	170
6	Rated short circuit breaking current (peak)		kA	80	63	63
7	Rated active load and close circuit breaking current		A	63	50	50
8	Rated transferring current		A	1700	1200	1200
9	Rated short circuit making a current (peak)		kA	80	63	63
10	Rated cable(line) charging breaking current		A	50 and 10 50/10
11	Cable charge breaking current in earthing fault		A	20	20	20
12	Rated withstand current (peak)		kA	80	63	63
13	Short-time withstand current (2s)		kA	25	20	20
14	Mechanism life		times	5000	2000	2000