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ZW7-40.5
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ZW7-40.5 outdoor High Voltage Vacuum Circuit Breaker




1.General  Description

   ZW7-40.5 series of outdoor High Voltage Vacuum Circuit Breaker with Central Operating Mechanism are 3 phase.AC 50(60) Hz outdoor high voltage distribution equipment with 40.5kV rated voltage,which can be used to open or close loading current. over-loading current and short-circuit current.it is widely used  in rural electrical network and comply with GB1984-2003.Overall structure

of product adopt porcelain Insulator support type.Vacuum Interrupter is installed

inside. Upper insulator & bottom insulator is used for support insulator .three phases are amounted on same mechanism box.Moving end of vacuum interrupter is connected with operating mechanism through shaft and insulation lever.Operation mechanism is easy and convenient.

2.Applying  conditions:

Ambient temperature;-30----+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

40.5

2

Rated power frequency withstand voltage/1min

Dry

kV

95

Wet

80

3

Rated lighting impulse withstand voltage

kV

185

4

Rated frequency

Hz

50/60

5

Rated current

A

1250

1600

2000

6

Rated short circuit breaking current

kA

20/25/31.5

25/31.5

31.5

7

Rated withstand current(peak)

kA

50/63/80

63/80

80

8

Rated duration of short circuit

s

4

9

Rated operating sequence


O0.3sCO180sCO

10

Closing time

ms

50120

11

Opening time

ms

2060

12

Circuit resistance

μΩ

≤50(not including mutual   inductor)

13

Rated short circuit breaking times

Times

20

14*

Rated single capacitor bank breaking current

A

400

15*

Rated back to back capacitor bank breaking current

A

400

16

Mechanical life

Times

10000

17

Operating mechanism


CT19W

CD10

18

Max DC component


40%









4.Overall drawing




4. Secondary connection diagram






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