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Vacuum Circuit Breaker
Vacuum Circuit Breaker
Vacuum Circuit Breaker

35kV MV Indoor Vacuum Contactor with Permanent Mechanism/Switch for Switchgear, VAC1-36(40.5)kV

VAC1-36(40.5)kV
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1. General description
VACI-36(40.5)kV type indoor M.V. vacuum circuit breaker with tri-phase AC 50Hz, rated voltage 36kV. Applicable to industrial, power station and substation electric protection and control, especially suitable for frequent operation.
The product conforms to IEC 62271-100-2008 GB1984“AC M.V. Circuit Breaker” and JB3855“36-40.5kV Indoor AC M.V. Vacuum Circuit Breaker” standard.

2. Normal using condition
1) Ambient temperature≤+40℃； average in 24 hours≤+35℃, ≥-15℃；
2) Humidity: daily average <95%, monthly average<90%; daily average saturated vapor pressure<2.2kPa, monthly average saturated vap or pressure≤108kPa;
3) Altitude:≤1000m;
4) The surrounding air is not obviously polluted by dust, smoke, corrosive or inflammable gas, vapor, or salt-frog;
5) Outer vibration of switch external and controller can be ignored;
6) Electromagnetic interference in the amplitude of the second system ≤16kV.

3. Main technical parameter

Item

Unit

Data

Rated voltage

kV

36(40.5)

Rated frequency

Hz

50

Rated insulation level 1 min power frequency withstand voltage pole to earth

kV

95

Rated insulation level 1 min power frequency withstand voltage phase

kV

118

Rated insulation level lightning impulse withstand voltage pole to earth

kV

185

Rated insulation level lightning impulse withstand voltage phase

kV

215

Power frequency withstand voltage of secondary circuit

V

2000

Rated current

A

630,1250, 1600, 2000, 2500

Rated short-circuit breaking current

kA

20, 25, 31.5

Rated short-time withstand current

kA

20, 25, 31.5

Rated short circuit duration

s

4

Rated peak withstand current

kA

50, 63, 80

Rated short-circuit making current

kA

50, 63, 80

Rated short circuit current breaking times (class E2)

times

30

Rated single/back to back capacitor bank breaking current

A

630/400

Clearance between open contacts

mm

18~20

Contact stroke

mm

4~6

Allowable wear thickness of contact

mm

3

Average opening speed

m/s

1.4~2.0

Average closing speed

m/s

0.6~1.2

Contact closing bounce time

ms

≤3

Different phases of contact closing and opening

ms

≤2

Rebound amplitude of opening contact

mm

≤2

Opening time (rated voltage)

ms

20~50

Closing time (rated voltage)

ms

30~70

Mechanical life (M2)

times

10000

Rated operating voltage

V

AC110/220  DC110/220

Rated operation sequence

O-0.3s-CO-180s-CO

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