Air Insulated Ring Main Unit with Load Break Switch

China Air Insulated Ring Main Unit with Load Break Switch, Find details about China Ring Main Unit, Switchgear from Air Insulated Ring Main Unit with Load Break Switch

Basic Info.

Model NO.

SM66

Insulating Medium

Sf6

Type

Half Gas Insulated

Configuration

Indoor Lbs/Indoor Current Transformer

Trademark

powertech

Transport Package

Wooden Packing

Specification

IEC, GB

Origin

Zhejiang, China

HS Code

8537109090

Model NO.

SM66

Insulating Medium

Sf6

Type

Half Gas Insulated

Configuration

Indoor Lbs/Indoor Current Transformer

Trademark

powertech

Transport Package

Wooden Packing

Specification

IEC, GB

Origin

Zhejiang, China

HS Code

8537109090

Product Desciption

Air Insulated Ring Main Unit with Load Break Switch

General

SM66-Moule type RMU with SF6 load switch as main switch, for whole cabinet is suitable for electric distribution automation and compact also expandable metal close switchgear.It characters in its simple structure, flexible operation, reliable interlocking and convininent installation etc. It also can be assembly with RCB series VCB with permanet magnet mechanism.

Service environment

a) Air temperature: Maximum temperature: +40ºC; Minimum temperature:-35ºC
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level: Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake.

Technical parameters

No	Item		Unit	Parameter
1	Rated voltage		kV	12	24	36
2	Rated current		A	630/800
3	Rated frequency		Hz	50/60
4	1min Power frequency withstand voltage	wet	kV	38	50	70
		dry	kV	48	60	80
5	Lightning impulse withstand voltage Common value		kV	75	125/150		125
6	Rated transfer current		A	1700	1200	800
7	Rated active load and close circuit breaking current		A	63	50	50/40
8	Rated cable charge breaking current		A	50 and 10
9	Rated short circuit breaking current		kA	80	63	50/40
10	Rated short circuit making current (peak)		kA	63	50	63	50
11	Short time (2s) withstand current, load switch/earth		kA	25/20	20/20	25/20	20/20
12	Rated withstand current (peak)		kA	80	63	50/40
13	Mechanism life		Times	5000		2000	2000
Remarks: Rated current of combination of switch and fuse decided by the fuse current.