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FZRN-40.550-20 Vacuum Disconnect Load

Summary

FZRN -40.5/50-20 vacuum disconnect load break switch and fuse combination apparatus is used for 35kV substation, small volume, convenience for installation,especially for no power-supply area, it is easy and safe for changing the fuse.


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Product name:FZRN -40.5/50-20 Vacuum Disconnect Load
Break Switch and Fuse Combination Apparatus

Summary

FZRN -40.5/50-20 vacuum disconnect load break switch and fuse combination apparatus is used for 35kV substation, small volume, convenience for installation,especially for no power-supply area, it is easy and safe for changing the fuse.

Ambient condition
1. Altitude: 1000m;
2. Ambient temperature: -40 ~+40 ;
3. Relative humidity: daily average 95 , monthly average 90 ;
4. Earthquake intensity: 8 degree;
5. Pollution grade: degree.

Structure feature
The short-circuit breaking current can up to 20kA, long mechanism life, there is an security linkage between main switch, disconnect blade and earthing blade, it can operate frequently. It according to the standard of GB16927, IEC420 & IEC62271-105.


No. Item Unit Combination apparatus Load break switch
1 Rated voltage kv 40.5 40.5
2 Rated current A 50 1250
3 Rated power frequency HZ 50/60 50/60
4 Rated short-circuit breaking current KA 20 *
5 Rated short-circuit making current * 40
6 Rated peak withstand current * 40
7 Rated short-time withstand current * 16
8 Rated transfer current A 2000 *
9 Rated connect current 2000 *
10 Rated active load breaking current *
11 Rated short-circuit duration S * 4
12 Rated short-time(1min)
P.F. withstand voltage
KV phase to phase, to earth and normal gaps: 95
disconnect gaps:115
13 Rated lightning impulse 
withstand voltage(peak)
phase to phase, to earth and normal gaps:185
disconnect gaps: 215
14 Circuit resistance u Ω 80 80

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