place of Origin：Hang Zhou, China
General Description
ZN23-40.5 indoor high voltage vacuum circuit breaker is main switchgear of 40.5KV three phases AC 50Hz which are suitable for controlling and protecting the distribution system of industrial enterprises, substationm specially for metallurgy industry where it needs frequent operate electric arc furnace.
This breaker complies the requirement of GB1984-89 “AC High voltage circuit breakers” breaker carries can be pushed into GBC-35, JYN1-35 high voltage switchboard, if the plugs of breaker to be removed, it can be instalied independently.
Main Technical Parameters
|
Item |
Description |
Unit |
Data |
||
|
1 |
Ratedvoltage |
KV |
40.5 |
||
|
2 |
Lightningimpulsewithstandvoltage(peak) |
185 |
|||
|
3 |
1minpowerfrequencywithstandvoltage |
95 |
|||
|
4 |
Ratedfrequency |
Hz |
50 |
||
|
5 |
Ratedcurrent |
A |
1250 |
1600 |
2000 |
|
6 |
Ratedshortcircuitbreakingcurrent |
KA |
20 |
25 |
31.5 |
|
7 |
Ratedshorttimewithstandcurrent |
20 |
25 |
31.5 |
|
|
8 |
Ratedpeakwithstandcurrent |
50 |
63 |
80 |
|
|
9 |
Durationofratedshortcircuitwithstandcurrent |
S |
4 |
||
|
10 |
Ratedshortcircuitmakingcurrent |
KA |
50 |
63 |
80 |
|
11 |
Ratedoperatingsequence |
(O)-0.3-(CO)-180S-(CO) |
|||
|
12 |
Closingtime |
ms |
≤75 |
||
|
13 |
Openingtime |
≤60 |
|||
|
14 |
Nosofbreakingratedshortcircuitbreakingcurrent |
times |
20 |
||
|
15 |
Mechanicallife |
10000 |
|||
Note:Please contact the factory to confirm the latest parameters
Outline and installation dimension
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