12kv Vacuum Ring Main Unit /Insulated Switch Cabinet

China 12kv Vacuum Ring Main Unit /Insulated Switch Cabinet, Find details about China Rmu, Sf6 from 12kv Vacuum Ring Main Unit /Insulated Switch Cabinet

Basic Info.

Model NO.

VSR3-12/D630A

Application

10kv Cable Network ,Elevated Cable Hybrid Network

Trademark

Transport Package

Export Package

Specification

500*895*1450mm

Origin

China

Model NO.

VSR3-12/D630A

Application

10kv Cable Network ,Elevated Cable Hybrid Network

Trademark

Transport Package

Export Package

Specification

500*895*1450mm

Origin

China

Product Desciption

Product Description

1.Description

VSR3-12/D630A series vacuum ring main unit is a 12kV fully enclosed and insulated switch cabinet produced by Zhuhai XJ Electric Co., Ltd. It adopts vacuum as the arc extinction medium, uses SF6 gas as the insulating medium and is applicable to neutral point earthing system via small resistance, neutral point ungrounded system and neutral point earthing system via an arc suppression coil for 10kV cable network and elevated cable hybrid network.
All live parts of vacuum switches of this cabinet and the switches are enclosed in a stainless steel gas chamber. The enclosed chamber is filled with the SF6 gas. SF6 gas is a colorless and odorless inert gas without any impact on the environment. Its dielectric strength is three times that of air and it is not decomposed even at 500ºC. Before leaving the factory, the switch cabinet is filled with SF6 gas at the specified pressure. The rated gas pressure is '0'MPa. The cabinet may be configured flexibly. Multiple cabinet types and combination schemes are available. There is either manual mechanism or motor-driven mechanism. Their overall and installation dimensions are similar. The cabinet may be installed outdoor or indoor, including in basement, concrete box and stainless steel box.

2.Features

Equipment intelligence: Vacuum arc extinction and external insulation by SF6 are adopted. The enclosed metal cabinet structure is compact and has two modes: UIT and distributed smart, for flexible switching to realize local fault handling.
Equipment integration: Switch, power PT, CT, sensor, smart terminal, automatic interface, dedicated connecting cables and other design are integrated. Joint debugging test is done once or twice in factory. Standard interfaces are reserved to realize fast and convenient plug connection on site.
Equipment practicability: The complete equipment is applicable to the construction of new cable rooms and reformation of original equipment in old cable rooms, cable lines for various demands to realize automation.
Maintenance-free equipment: The equipment and interface adopt a fully insulated and enclosed structure. The backup power is configured with a super capacitor to ensure the equipment is highly reliable and maintenance free in design.

3.Main Technical Data

Item		Parameters
Body of switch cabinet (VSR3-12/630A)
Name		Loading switch	Circuit breaker
Rated voltage		12kV
Rated current		630A
Dielectric voltage at power frequency (phase-to-phase, phase-ground/break)		42kV/48kV
Lightning impulse withstand voltage (phase-to-phase, phase-ground/break)		75kV/85kV (peak)
Rated short-time withstand current		20kA (2s)	20kA (4s)
Rated short-circuit drop-out current		--	20kA
Closing/opening voltage		DC24V/DC48V
Mechanical life		10000 times
Current transformer	Phase CT ratio	600/5
	Zero-sequence CT ratio	20/1
Power transformer (PT) ratio		10/0.22