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General

FZN25-12DL/T630-20 indoor AC high voltage vacuum load switch is an indoor unit with three-phase AC of 50Hz,12KV rated voltage, applicable to industrial and mining enterprises’ power distribution stations and substations,etc. As the protection and control of electrical facilities, it is used for opening and closing load current, closed loop current, no-load transformer and cable charging current.

It matches an earthing switch with the ability to close short-circuit current. The operating mechanism can be divided into manual and electric type, which is convenient for realizing the three remote control requirements of the power system.

FZR25-12DL/T200-31.5 indoor AC high voltage vacuum load switch- fuse combination is an indoor unit with three-phase AC of 50Hz, 12KV rated voltage, applicable to industrial and mining enterprises’ power distribution stations and substations, etc.as short circuit protection and load confrol.

It matches an earthing switch with abiliy to close short-circuit current.The operating mechanism can be divided into manual and electric type,which is convenient for realizing the three remote control requirements of the power system.

Working Condition

●Alitude: 1000m.
●Ambient air temperature: Max.+40℃; Min.-25℃ (Allowed to storage and transportation at-30℃).
●Air relative humidity: Daily average is not greater than 95%, monthly average is not greater than 90%.
●Pollution level: II.
●Seismic intensity: Not more than 8 degree. No frequent and severe vibration.
●The surrounding air is not contaminated by corrosive or flammable gases, water vapor, etc.

Technical specification

No.

Ltem

Unit

Data

FZN25-12DL/T630-20 FZRN25-12DL/T200-31.5

1

Rated voHoge

KV

12

2

Rated current

A

630

200

3

Rated frequency

HZ

50

4

Rated insulation level

I min power Lightning impulse withstand voltage

KV

Arc chamber between open contacts 30; To earth, phase to phase 42;lsolation between open contacts 48

Lightning impulse withstand voltage

KV

To earth, phase to phase 75; Isolation between open contact 85

5

Rated short-tine withstand current

KA

20

6

Rated short circuit duratton

S

4

7

Rated peak withstand current

KA

50

8

Rated active load breaking current

A

630

9

Rated closed-loop breaking current

A

630

10

Rated cable charging breaking current

A

10

11

Rated breaking no-lood transformer capacity

KVA

1600

12

Rated short-drcuit breaking current

KA

- 31.5

31.5

13

Rated transfer current

A

2000

14

Fuse type

SDLAJ-12、XPNTI-12

15

Impactor output energy

J

1+0.5

16

Rated short circuit closing currenl

KA

80 (Expected peak)

17

Earthing switch rated short-lime withstand current

KA

20

18

Earthing switch rated short drcurt duration

S

2

19

Earthing switch rated peak withstand current

KA

50

20

Auxiliary circuit rated voltage

V

≈220V、≈llOV

21

Mechanical life

Times

10000

 Outline overall and installing dimensions

 T200-315 Indoor AC High Voltage Vacuum Load Switch 001

 


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