Cheapest Factory Wall Switch Socket - TDXG-12(L) Indoor AC high voltage SF6 ring main unit – TENPRO

Product characteristics

Small in size

Convenient installation

Performance stability

Maintenance – free

TDXG-12(L)

Indoor AC high voltage SF6 ring main unit

Scope of application

Ring main units are suitable for three-phase AC 50 Hz, rated voltage 12kV indoor distribution device. And It is widely used in industrial and civil cable ring network and power supply terminal.

It is especially suitable for receiving and distributing electric energy in small secondary distribution stations, open and close stations, industrial and mining enterprises, urban residential areas, airports, railways, tunnels, high-rise buildings and other power systems.

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Technical data

Name

Unit

Parameter

Rated voltage

KV

12

Main busbar rated current

A

630

Rated current

A

630

Rated frequency

Hz

50

Rated short-time withstand current

KA

20

Rated short circuit duration

S

4

Rated peak tolerant current

KA

50

Rated short-circuit closing current

KA

50

Rated active load breaking current

A

630

Rated closed-loop breaking current

A

630

Rated cable charging breaking current

A

10

Earthing switch rated short-time withstand current

KA

20

Earthing switch rated short duration

S

4

Earthing switch rated peak withstand current

KA

50

Rated insulation level

1min power frequency withstand voltage (effective value)

KV

 (phase, over the ground) 42; (fracture) 49

Lightning impulse withstand voltage (peak)

KV

 (phase, over the ground) 75; (fracture) 85

Main circuit resistance

μΩ

≤400

Mechanical life

 

load switch

times

5000

Earthing switch

times

2000

Auxiliary circuit 1min power frequency withstand voltage

KV

2

SF6 gas rated pressure (20 ℃ gauge pressure)

Mpa

0.040±0.005

Annual leakage rate of SF6 gas

 

≤1%

levels of protection

 

IP3X


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