FT8-12(24) series indoor high-voltage AC vacuum load switch, load switch-fuse combination device
Negotiable
China
1688 Danhe East Road, Xiangshan County, Zhejiang Province
+86 0574-59101862
Online Contact
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Product Introduction

Product features:

The FT8-12(24) series indoor high-voltage AC vacuum load switch - load switch-fuse combination device is characterized by reliable and simple interlocking, compact structure, small size, aesthetically pleasing appearance, stable performance, safe and reliable interruption, and suitability for frequent operations. It also features both manual and electric operation functions, with intuitive and convenient operation, low operating force, and more reliable anti-misoperation protection. The load switch-fuse combination device also protects transformers from overload and prevents equipment from running in a single-phase condition.

① Miniaturization: Compact width and height, with cabinet width of 500mm (12kV)/700mm (24kV) and cable connection height ≥ 650mm.

② Integration: Load switch + isolating switch + grounding switch + fuse in an integrated design, and the switch can be mounted upside down.

③ When the isolating switch is in the off position, the distance from the isolating blade to the ground remains greater than 125mm (12kV)/180mm (24kV).

Application range:

The product offers control, protection, and monitoring functions for electrical circuits. It is suitable for use in airports, subways, large buildings, distribution substations, factories, and enterprises.

Product Parameters

Serial Number

Name

Unit

Parameters

1

Rated voltage

kV

12

24

2

1min power frequency withstand voltage (effective value) (phase-to-phase, phase-to-ground/breaker)

kV

42/48

65/79

3

Lightning impulse withstand voltage (effective value) (phase-to-phase, phase-to-ground/breaker)

kV

75/85

125/145

4

Rated current

A

630, 1250

5

Rated frequency

Hz

50

6

4s rated short-time withstand current

kA

20, 25

7

Rated peak withstand current

kA

50, 63

8

Rated short-circuit closing current

kA

50, 63

9

Rated active load breaking current

A

630, 1250

10

Rated closed-loop breaking current

A

630, 1250

11

5% rated active load breaking current

A

31.5

12

Rated cable charging breaking current

A

10

13

Rated breaking current of single capacitor bank

A

630

14

Rated back-to-back capacitor bank breaking current

A

400

15

Rated no-load transformer breaking current

kVA

1250kVA transformer no-load current

16

Mechanical life of main switch

Times

10000

17

Mechanical life of isolating switch and earthing switch

Times

3000