Contact us

Sales hotline :
+86-917-3363886
E-mail:
sunnymeng@westpowerelectric.com
Web:
www.tongzhongdianqi.com

   ID:sunny-meng6
location:Return VTZ-24
VTZ-24
☆ introduce 

VTZ-24 Solid-enclosed Indoor High Voltage Vacuu  Circuit Breaker


VTZ-24.jpg


1.General  Description

VTZ-24 Solid-enclosed Indoor High Voltage Vacuum Circuit Breaker is widely used for

3phase AC 50(60)HZ and 24KV indoor device,which is used for protecting and controlling electrical equipment in fields of industry&mining enterprise. power plants and substation.

Adopt embedded poles in main circuit,modularized mechanism ,integrated stored energy

hand shank and reasonable whole structure Meanwhile,it own long mechanical life,excellent breaking property and strong suitability.

Equipped with fuse handcart,disconnector handcart and voltage transformer handcart.

2.Applying  conditions:

Ambient temperature;-10----+40

Relative humidity:daily average ≤95%,monthly average ≤90%

 Seismic intensity ≤8

Saturated vapor pressuredaily average ≤2.2kPamonthly average≤1.8kPa

Altitude:≤1000m;(Not including special requirement

Service environmentshould be avoided fire, explosion risk, serious pollution, chemical corrosion and violent vibration

3.Technical specification

No.

Item

Unit

Data

1

Rated voltage

kV

24

2

Rated frequency

Hz

50/60

3

Rated insulation levels

Rated power frequency withstand voltage/1min

kV

65

Rated lighting impulse withstand voltage

kV

125

4

Rated current

A

630

1250

1600

2000

2500

3150

5

Rated short circuit breaking current        Rated short time withstand   current(4s)

kA

20

20





25

25

25





31.5

31.5

31.5

31.5

31.5

6

Rated short circuit making current(peak)   Rated withstand current(peak)

kA

50

50





63

63

63





80

80

80

80

80

7

Rated duration of short circuit

s

4

8

Rated operating sequence


O-0.3s-CO-180s-CO

9

Mechanical life

Times

30000

10*

Rated single capacitor bank breaking current

A

400

11*

Rated back to back capacitor bank breaking current

A

400

12

Max DC component


50%

Remark:1.No.10 &No.11 are offered while user need.

4. Overall drawing








Overall of fwithdrawable circuit breaker






Overall of fixed circuit breaker




5. Secondary connection diagram













prev:VTZ-40.5
next: VTZ-12