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1 Outline
The ZN23-40.5/ 1600-25 2000-31.5 indoors high vacuum circuit breaker is rated voltage 35kV, in the three phase ac 50Hz system indoors installment, is suitable to place and so on industry and mining enterprise, power plant, transformer substation, uses in control and protection which the high-tension motor, the transformer, the capacitor installs, has the following merit:
a).Does not have the pollution, does not have the fire and the explosion hazard;
B) longer machinery, electrical life, electrical life 6,000;
C) moves overhauls the quantity to be extremely few, achieves nearly does not need to service;
D) may frequently operate;
E) holds the drive mechanism to be possible to select the CT19BN spring to hold the drive mechanism or the CD10 III electromagnetism holds the drive mechanism; This product conforms to GB1984-89 "A.c. high voltage Circuit breaker" and DL402-91 "A.c. high voltage Circuit breaker Ordering Engineering factor" request.
2 ．Use environmental condition
A) surrounding air humidity: Upper limit +40 ℃ , lower limit -10 ℃ ;
B) elevation: Does not surpass 1000m;
C) humidity: Relative humidity: The daily average value is not bigger than 95%, the monthly mean value is not bigger than 90%; Saturated steams the steam pressure: The daily average value is not bigger than the 2.2X10-3MPa monthly mean value not to be bigger than 1.8X10-3MPa
d) the surrounding air not the corrosive flammable gas, the steam and so on the obvious pollution;
E) non- regular fierce vibration. If has the special request to have to indicate in the ordering
3 Main technical parameter
3 ．1 The fixed parameter see Table 1
Table 1
|
Serial number |
Name |
Unit |
Value |
|
1 |
Rated voltage |
kV |
40.5 |
|
2 |
Fixed insulation level |
（ 1min ）
Labor frequency voltage
（ 1min ） |
95 |
|
Lightning surge voltage (peak value) |
185 |
|
3 |
Nominal frequency |
Hz |
50 |
|
4 |
nominal currents |
A |
1600,2000 |
|
5 |
fixed single condenser banks drop-out currents |
400 |
|
6 |
fixed short-circuit drop-out current |
kA |
25 31.5 |
|
7 |
fixed short-circuits the pass to gather the electric current (peak value) |
63 80 |
|
8 |
fixed peak values electric currents |
63 80 |
|
9 |
fixed short-time electric currents (4s) |
25 31.5 |
|
10 |
The fixed out of phase short-circuits the drop-out current |
21.7 27.4 |
|
11 |
Fixed operation sequence |
0-0.3s-CO
-180s-CO |
|
12 |
minute floodgates time (rated voltage) |
s |
≤ 0.06 |
|
13 |
Gathers Floodgate time (rated voltage) |
≤ 0.1 |
|
14 |
Mechanical life |
time |
6000 |
|
15 |
Electricity life |
Opens breaks the nominal current |
time |
6000 |
|
Opens breaks fixed short-circuits the drop-out current |
20 |
|
16 |
Moves, the static contact permission attrition thickness |
mm |
3 |
3 ．2 machineries adjustments parameter: See Table 2Table 2
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Serial number |
Name |
Unit |
Value |
|
1 |
Contact travelling schedule |
mm |
25 |
|
2 |
Overtravel |
8 |
|
3 |
Alternates with the center distance |
460 ± 2.5 |
|
4 |
Oil cushion power stroke |
15 |
|
5 |
Averageg gathers floodgate speed |
m/s |
0.8 ± 0.2 |
|
6 |
After evenly divided equally the floodgate speed (just to divide in 18mm contact travelling schedule average velocity) |
1.8 ± 0.2 |
|
7 |
Main return route resistance |
μΩ |
≤ 100 |
|
8 |
The contact gathers floodgate bounces the time |
ms |
≤ 3 |
|
9 |
Three coincides, divides the floodgate No Same time |
≤ 2 |
4、The contour and installs the size
1. Frame 2. Operating mechanism (CT19BN, CD10) 3. Tension bar 4. Explosion chamber note: Spacing 460mm
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