TX20
Service Conditions:
1. Ambient Temperature:-5°C-+40°C
2. Elevation:≤ 2000m
3.Humidity:≤ 50% at 40°C,≤ 90% at monthly temperature of 25°C;
4. Pollution Degree 3;
5. Mounting type: type III
6.Angle between mounting surface and vertical surface:≤ 5º
7.Screw mounting.
Table 1:
Size | TX10 | TX20 | TX30 | TX40 | TX40-2 | Rated insulating voltage Ui(V) | 660 | 660 | 660 | 660 | 660 | Rated operating volt Ue(V) | 220 | 220 | 220 | 220 | 220 | Rated thermal current Ith(A) | 25 | 35 | 45 | 55 | 55 | AC-8a Rated operating current under AC-8a le(A) | 16 | 25 | 32 | 40 | 40 | AC-8b Rated operating current under AC-8b le(A) | 8 | 12.5 | 16 | 20 | 20 |
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Table 2:
System | Rated bolt.Ue(V) | Rated Current.leA) | Making&breakingConditions | AC-8a | 220 | See Table 1 | lc/le | Ur/Ue | CosΦ | Operating times | AC-8b | 1.0 | 1.05 | 0.80 | 30000 | 6.0 | 0.35 | 6000 |
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Table 3:
System | Rated bolt.Ue(V) | Rated Current.leA) | Making Conditions | Breaking Conditions | Service Life(times) | Operatingfrequency (Times/h) | lc/le | Ur/Ue | CosΦ | lc/le | Ur/Ue | CosΦ | AC-8a | 220 | le<17 le≥17 | 6 | 1 | 0.65 | 1.0 | 0.17 | 0.65 | 300 | 60 | 0.35 | 0.35 | AC-8b | le<17 le≥17 | 6 | 0.65 | 6.0 | 1 | 0.65 | 120 | 20 | 0.35 | 0.35 |
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