Outdoor High Voltage Vacuum Circuit Breaker ZW99-40.5

Outdoor High Voltage Vacuum Circuit Breaker ZW99-40.5

ZW99-40.5 series outdoor high voltage AC vacuum circuit breaker (hereinafter referred to as "circuit breaker") is a three-phase AC 50Hz outdoor high voltage switchgear; suitable for 35kV transmission and distribution system control and protection, can be used as 35KV prepaid metering control switch; This product has the advantages of small size, safety, reliability, frequent operation and low maintenance.
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Product Details

ZW99-40.5 series outdoor high voltage AC vacuum circuit breaker (hereinafter referred to as "circuit breaker") is a three-phase AC 50Hz outdoor high voltage switchgear; suitable for 35kV transmission and distribution system control and protection, can be used as 35KV prepaid metering control switch; This product has the advantages of small size, safety, reliability, frequent operation and low maintenance.


Applying ambient conditions

a) Altitude: no more than 2000m;

b) Ambient temperature: -35 ° C ~ +40 ° C;

c) relative humidity: the monthly average does not exceed 90%; the daily average relative humidity is not more than 95%;

d) the earthquake crack does not exceed 8 degrees;

e) Environmental pollution tolerance value: Grade III;

f) the wind speed does not exceed 34m/s;

j) The installation site should be a place free of flammable, explosive, chemically corrosive substances and frequent severe vibrations.


Technical parameters


Item

Unit

Value

1

Rated voltage

kV

40.5

2

Rated insulation level

Rated short-time withstand current

Dry test

kV

95

Wet test

80

Rated lightning impulse withstand voltage

185

3

Rated frequency

Hz

50

4

Rated current

A

1250, 1600

5

Rated short-time withstand current

kA

20

25

31.5

6

Rated peak withstand current

50

63

80

7

Rated short circuit breaking current

20

25

31.5

8

Rated short circuit closing current

50

63

80

9

Rated short circuit duration

s

4

10

Rated power supply for the closing, opening and auxiliary circuits

V

AC/DC 220

11

Rated operation sequence


O-0.3s-CO-180s-CO

12

Opening time

ms

20-45

13

Closing time

20-50

14

Full breaking time

≤80

15

Rated cable charging breaking current

A

100

16

Mechanical life

times

10000

17

Rated short circuit breaking current breaking times

times

20

18

Product quality

kg

300

19

Clearance between open contacts

mm

16±1

20

Contact over travel

4±1

21

Average closing speed

m/s

0.6±0.2

22

Average opening speed

1.6±0.3

23

Contact closing bounce time

ms

≤5

24

Simultaneity of three phase closing

≤2

25

Simultaneity of three phase opening

≤2

26

Main circuit resistance

μΩ

≤50



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