XGW☐-12 Prefabricated Enclosed Ring Main Box (Compact Type)

Negotiable
China
No.868 Jiahang Road, Jiading District, Shanghai
+86 21 69900817
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Product Introduction

The XGW☐-12 prefabricated enclosed ring main box (compact type) installs and debugs 10kV ring main units, current transformers, voltage transformers, automation station terminals (DTU), and indicating instruments into a movable, enclosed, moisture-proof, and condensation-proof stainless steel box, thereby realizing the integration of primary and secondary systems in urban distribution networks, shortening the construction period, and greatly improving the reliability of urban power grid operation.

Product Features:

·The high-voltage ring main unit can be equipped with our company's SF6 fully insulated ring main unit (LMG-12), environmentally friendly gas ring main unit (LCG-12), or solid insulated ring main unit (SMG-12).

·The box-type switching station can be equipped with station terminals and communication devices (DTU) according to user requirements to realize automation "three-remote" functions.

·A cable sealing plug is added at the bottom of the high-voltage cabinet. Tightening the screws on the sealing plug clamps the cable to achieve a sealing effect, thereby preventing water vapor in the cable trench from entering the high-voltage cabinet along the cable. Condensation-proof cotton is installed on the inner side of the top of the high-voltage cabinet instrument room to absorb water vapor and prevent water droplets from dripping after condensation.

Product Parameters

Item

Unit

Parameter

Rated Voltage

kV

12

Rated Frequency

Hz

50

Rated Current

Busbar

A

630

Feeder (Circuit Breaker Part)

Insulation Level

Partial Discharge

Single Compartment Part

pC

≤10

Rated 1min Power Frequency Withstand Voltage

To Earth and Between Phases

kV

42

Across Isolating Distance

kV

48

Rated Lightning Impulse Withstand Voltage

To Earth and Between Phases

kV

75

Across Isolating Distance

kV

85

Auxiliary and Control Circuit 1min Power Frequency Withstand Voltage

kV

2

Rated Short-Time Withstand Current

Main Circuit 4s

kA

20

Earthing Switch 4s

Earthing Connection Circuit 2s

kA

17.4

Rated Peak Withstand Current

Main Circuit

kA

50

Earthing Switch

Earthing Connection Circuit

kA

43.5

Rated Short-Circuit Making Current (Peak) Vacuum Circuit Breaker

kA

50

Rated Short-Circuit Breaking Current

Vacuum Circuit Breaker

kA

20

Short-Circuit Breaking Current Breaking Operations

Times

30

Mechanical Life

Vacuum Circuit Breaker

Times

10000

Three-Position Disconnector

Disconnector

Times

3000

Earthing Switch

Times

3000

Internal Arc Withstand Current and Duration

kA/s

20/1

Loop Resistance (Environmental Protection Unit Cabinet V)

μΩ

≤200

Loop Resistance (SF6 Unit Cabinet V)

μΩ

≤150

Disconnector Loop Resistance

μΩ

40

Ring Main Box Enclosure Protection Degree

 

IP4XW

Overall Dimensions (Width × Depth × Height)

mm

3200*1150*2300/1600*1200*2350