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Ht-12 SF6 ring network cabinet (standardized and customized by State Grid)

The core part of SF6 ring network cabinet adopts load switch, fuse and circuit breaker, which has the advantages of simple structure, small volume, low price, improving power supply parameters and performance and power supply safety.
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Product overview

The core part of SF6 ring network cabinet adopts load switch, fuse and circuit breaker, which has the advantages of simple structure, small volume, low price, improving power supply parameters and performance and power supply safety.

It is widely used in urban residential areas, high-rise buildings, large public buildings, factories, enterprises and other distribution stations and box substations in AC 10kV distribution systems.

 

Model meaning

HT

12

(V)

630

20

Model of SF & ring network cabinet of Huatuo group

Rated voltage 

12kV

Ring main unit type:

V-circuit breaker cabinet c-load switch cabinet f-combined electrical cabinet

M-metering cabinet

Rated current:630A

Rated short-time withstand current:

20kA

 

Technical Parameter

Project

Company

Parameter

Rated Voltage

 

kV

12

Rated Frequency

 

Hz

50

Rated Current

Circuit Breaker Cabinet, Load Switch Cabinet

A

630

 

Combined Electrical Cabinet

A

125

Loop Resistance

Circuit Breaker Cabinet

μΩ

≤150

 

Combined Electrical Cabinet

μΩ

≤400

Rated Short-time Withstand Current

kA

20

Rated Short-time Withstand Current Time

s

4

Rated Peak Withstand Current

kA

50

Rated Short-circuit Breaking Current

(circuit Breaker Cabinet)

kA

20

Rated Short-circuit Making Current (circuit Breaker Cabinet)

kA

50

Temperature Rise Test Current

Circuit Breaker Cabinet

A

693

 

Combined Electrical Cabinet

A

125

Expected Short-circuit Making And Breaking Current (switchgear)

kA

31.5

Rated Transfer Current (combined Apparatus Cabinet)

A

1750

Rated Power Frequency Imin Withstand Voltage (relative)

kv

42

Rated Power Frequency Imin Withstand Voltage (fracture)

kV

48

Peak Value Of Rated Lightning Impulse Withstand Voltage (phase To Ground)

kV

75

Peak Value Of Rated Lightning Impulse Withstand Voltage (fracture)

kV

85

Partial Discharge (ur. 12)

 

pc

≤10

Degree Of Protection (enclosure)

   

IP4X

Annual Gas Leakage Rate

   

≤0.01%

Gas Moisture Content

 

uL/L

≤150

Rated Operating Voltage (dc)

V

48

Design Pressure Of Inflatable Compartment

MPa

0.08

 

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