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Indoor High Voltage Vacuum Breaker

24kV Plateau Type Indoor Vacuum Circuit Breaker

24kV Plateau Type Indoor Vacuum Circuit Breaker

Mostly purpose VS1-24indoor high-voltage vacuum circuit breaker is an AC three-phase 50HZ indoor high-voltage switching equipment with rated voltage of 24KV,mainly applied for protection and control in power distribution system of power plant,electric substation and industrial and mining......

Mostly purpose
VS1-24indoor high-voltage vacuum circuit breaker is an AC three-phase 50HZ indoor high-voltage switching equipment with rated voltage of 24KV,mainly applied for protection and control in power distribution system of power plant,electric substation and industrial and mining enterprise,It is especially applied for breaking of important load and place requiring frequent operation.

The manufacture of circuit breaker complies with GB1984-2003"AC High-Voltage Circuit Breaker",JB3855-1966"Technical Conditions for Ordering 3.6-40.5KV Indoor Vacuum Circuit Breaker"of national standard and relative IEC standards.It Has reliable interlocking function.
The operating mechanism of circuit breaker is spring energy storage type,which is either available for AC/DC energy storage operation or manual operation.

The circuit breaker can also be equipped with permanent magnetic operating mechanism of long service life,its mechanical life can get to 100000 times,which is suitable for place with extremely frequent operation.
The assembled structure design makes the circuit breaker can not only be used as a fixed unit but also as mid-cabinet unit when it is equipped with chassis.

Normal working environment
1.Altitude:≤2000m,It should be custom-made for>2000m.
2.Ambient temperature:Max.+40 ℃,Min.-25℃
3.Relative Humidity:Daily average value should be less than 95%,monthly average value should be less than 90%
4.The earthquake intensity:less than 8 degree.
5.The place where it is used is free from fire,explosion,chemical corrosion and intense vibration.

Technic Parameter 

Item

Unit

Parameter

Rated voltage

KV

24

Nominal Frequency

HZ

50

Nominal Current

A

630 1250 1600

Rated short circuit breaking current

KA

20 25 31.5

Switch Current of Nominal short-circuit(peak value)

KA

50 63 80

Substantial time of Nominal short-circuit

S

4

Breaking current frequency under rated short circuit

20

Rated operating sequence

 

0-0.3s-CO-180s-CO

Nominal Durable Voltage for Thunder-and Lightning Impact(fracture)

KV

125

1min Rated power frequency withstand voltage(fracture)

KV

65

Switch-on time

ms

≤100

Switch-off time

ms

≤50

Mechanical life

20000

Rated energy storage and operating voltage

V

≌220/110

breaking time

ms

≤65

energy storage time

s

≤10


 Mechanlcal characteristic adjustment parameter

Item

Unit

Parameter

Contact opening

mm

15±1

Contact Over-travel

mm

3.5±0.5

Switch off speed

m/s

0.9-1.2

Switch on speed

m/s

0.5-0.8

Contact closing bounce time

ms

≤2

rated contact pressure

N

20KA(2000≤200) 25KA(2400±200) 31.4KA(3100±200)

Three-phase switching on or off non-synchronic

ms

≤2


External & Build in Dimension
图1.jpg

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