Technical specification
Switch load break switch FN18 |
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Rated voltage | Un | kV | 12kV | 24kV | ||||
Rated current | In | A | 400 | 630 | 1250 | 400 | 630 | 1250 |
Max.rated rated current | I | A | 400 | 630 | 1250 | 400 | 630 | 1150 |
Short circuit making capacity | Ima | kA
peak |
67 | 67 | 67 | 50 | 50 | 50 |
Peak withstand current | Idyn | kA
peak |
82 | 82 | 82 | 82 | 82 | 82 |
Short time current 1sec. 2sec.
3sec. |
Ith“
“ |
kA eff“
“ |
31.525
20 |
31.525
20 |
31.525
20 |
2525
16 |
2525
16 |
31.525
16 |
Mainly active load breaking capacity(test duty 4, IEC 60265-1 (IEC265)) | I | A | 400 | 630 | 1250 | 400 | 630 | 1250 |
Mainly capacitive breaking capacity(test duty 4, IEC60265-1 (IEC 265)) | I | A | 150 | 150 | 150 | 80 | 80 | 80 |
Mainly inductive breaking capacity cosφ=0.15 | A | 16 | 16 | 16 | 16 | 16 | 16 | |
Rated earth fault breaking capacity,IEC 60265-1 (IEC 265)
Earth fault breaking capacity Capacitive breaking capacity |
I I |
A A |
150 90 |
150 90 |
150 90 |
75 31.5 |
75 31.5 |
75 31.5 |
Max. Breaking capacity in co-operation with fuses IEC 62271-105 (IEC 420 1990-11) | A | 1600 | 1600 | 900 | 900 | |||
Max. Fuse size | In | A | 125 | 125 | 80 | 80 | ||
Power frequency withstand voltage 50Hz1 min.-to earth and between poles-across
isolating distance |
kV
kV |
42
45 |
55
70 |
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Impulse withstand voltage 1.2/50μs-to earth and between poles
-across isolating distance |
kV
kV |
75
85 |
125
145 |
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Pole distance | P | mm | 150 and 170 | 235, 250 and 275 | ||||
Max.operating torque at:-closing K/A mech.
-opening K/A mech. |
Nm
Nm |
115-120 Nm
K-mech. 120 Nm/A-mech. 3Nm |
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Operating angle on the shaft | degree | 130 | ||||||
Opening time | ms | 40-60 |
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