- Product Details
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Quick Details
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Certificate:
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ISO9001
-
Standard:
-
IEC-56 GB-1984-89
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Product name:
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VCB/VACUUM SWITCH
-
Rated frequency:
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50Hz/60HZ
Quick Details
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Place of Origin:
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Hubei, China
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Rated current:
-
1250/1600/2000A
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Rated voltage:
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33/35/40.5KV
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Certificate:
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ISO9001
-
Standard:
-
IEC-56 GB-1984-89
-
Product name:
-
VCB/VACUUM SWITCH
-
Rated frequency:
-
50Hz/60HZ
ZN85-40.5 indoor high voltage vacuum circuit breaker (Solid-closure structure)
Overview
ZN85-40.5 type indoor high voltage vacuum circuit breaker (Hereinafter referred to as the circuit breaker) is appropriate to 40.5kv,50Hz three phase current system, applicable to break loading current ,over load current ,fault current in mining industrial enterprise, power station, transformer substation. Vacuum circuit breaker pole insulation has experienced air insulation- composite insulation - embedded insulation,It has formed three generations of vacuum circuit breaker. In the first generation -air insulation,live part exposed in air, Its insulation affected by dust,moisture, Insects and so on. In the second generation- composite insulation,The arcing chamber protected by epoxy resin sleeve. But the sleeve does not wrap the high-voltage electric parts wholly,It would be affected by dust,Moisture,Insects and so on. The third generation of insulation is embedded pole,By the APG process, Using epoxy resin to seal the whole arc extinguish chamber and the upper and lower outlet. To do this, Not only reduce the arcing chamber size and also completely unaffected by the external environment (dust, moisture, etc.) so that improve the weatherability,Epoxy resin at this time not only as a part of the main insulation,At also be a support for the mechanical,The electric field distribution and the stress distribution is superior to the various shapes of insulating clapboard structure. Vacuum circuit breaker and operating mechanism adopts upper and lower arrangement structure,Effectively reduce the depth of the vacuum circuit breaker.Spring operating mechanism is specifically designed for this new type of vacuum circuit breaker,Installed in the vacuum circuit breaker frame,The structure is more suitable for the upper and lower arrangement structure,And become the integral part of the overall structure of vacuum circuit breaker. The simple mechanism design,The output curve and its performance is more suitable for the characteristics and requirements of 40.5kV vacuum circuit breaker. The overall layout is reasonable, beautiful,Simple,small volume,Flexible operation, Reliable performance,With electrical characteristics of long service life,Convenient maintenance,Free maintenance machanism. The vacuum circuit breaker is suitable for frequent operation ,Various occasions and operating conditions which are harsh place.
The normal conditions
1 Ambient temperature: max +40°C ,min -15℃(storage and transportation under -30℃ is allowed);
2Altitude: ≤1000m;
3 Relative humidity: Daily average relative humidity≤95%; Monthly average relative humidity≤90%; Daily average saturated vapor pressure:≤2.2*10-3 MPa,Monthly average value ≤1.8*10-3 MPa;
4 Earthquake intensity:≤8 degree;
5 The installation should be free from fire,Explosion, Severe vibration,Chemical corrosion and serious pollution.
Main technical data
|
No. |
Item |
Unit |
Value |
||
|
1 |
Rated voltage |
KV |
40.5 |
||
|
2 |
Rated insulation level |
Rated lighting impulse withstand voltage (peak) |
KV |
185 |
|
|
Short-time power frequency withstand voltage(1min) |
KV |
95 |
|||
|
3 |
Rated short-circuit breaking current |
KA |
25 |
31.5 |
|
|
4 |
Rated current |
A |
1250/1600 |
1250/1600/2000 |
|
|
5 |
Rated withstand current(peak) |
KA |
63 |
80 |
|
|
6 |
Rated operations of short circuit breaking current interruption |
Times |
20 |
||
|
7 |
Rated short-circuit duration |
S |
4 |
||
|
8 |
Rated operating sequence |
|
Opening-0.3S-closing opening-180S-closing opening |
||
|
9 |
Rated power voltage of closing and opening operating loop |
V |
AC,DC220 AC,DC110 |
||
|
10 |
Closing time |
ms |
50~100 |
||
|
11 |
Opening time |
ms |
30~60 |
||
|
12 |
Rated breaking current( a capacitor) |
A |
630 |
||
|
13 |
Rated breaking current(back to back capacitor) |
A |
400 |
||
|
14 |
Mechanical life |
Times |
20000 |
||
Parameters of the mechanical characteristics of circuit breaker assembly after adjustment
|
No. |
Item |
Unit |
Value |
|
1 |
Contact stoke |
mm |
22±2 |
|
2 |
Contact over travel |
mm |
8±2 |
|
3 |
Average opening speed |
m/s |
1.8±0.2 |
|
4 |
Average closing speed |
m/s |
0.65±0.2 |
|
5 |
Contact bouncing duration at closing operation |
ms |
≤3 |
|
6 |
Operating mechanism type |
|
3AV Special spring mechanism |
|
7 |
Three-pole closing operation un-simultaneity |
ms |
≤2 |
|
8 |
Conductive circuit resistance of each phases |
μΩ |
<45 |
Order guidelines
1 Vacuum circuit breaker’s name,model,main technical data and order quantity;
2 Vacuum circuit breaker’s rated voltage and rated current and rated short-circuit breaking current;
3 Vacuum circuit breaker’s Operation mechanism mode and control voltage;
4 Spare parts name and quantity,rated voltage of tripping and closing coil;
5 Other questions or special requirements please contact with manufacturer.
