Model |
Protection zone |
Protection level |
Suitable location |
TU2-10 |
LPZ1,LPZ2 zone boundaries of and LPZn |
Class 3 |
Normally installed in the distribution box of the premises; or installed in the computer information equipment, electronic equipment and control equipment, or the nearest lighting box, socket box. |
TU2-40 |
boundaries of LPZ0B and LPZ1 zone,or LPZ1 and LPZ2 zone |
Class2 |
Usually installed in the building distribution electric box,metering box;or installed in the computer center,motor housing,building control room,monitoring room, industrial automation,operation room and other places of power distribution box;also can be installed in the general distributionbox of the six floors below building, or the general distribution box of villa |
TU2-80 |
LPZOA,LPZ0B zone boundaries of LPZ1 zone |
Class1 |
Usually installed in the piercing lined low voltage main distribution cabinet |
TU2-1 |
Used in LPZ0A,LPZ0B zone |
Class 1 |
Usually used in lightning riskhigher equipment system of the first primary surge protection, installed in the general distribution box of distribution box, outdoor distribution box and so on. |
Distribution network grounding systemvoltage
Grounding system |
TT system |
TN-S system |
TN-C-Ssystem |
IT system |
The maximum voltage of the grid |
345V/360V |
253V/264V |
253V/264V |
398V/415V |
Main technical parameters and performance
Project Name |
Parameter |
TU2-10 |
TU2-20 |
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Nominal discharge current |
In(kA) |
5 |
10 |
||||
Maximum discharge current |
Imax(KA) |
10 |
20 |
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Maximum continuous operating voltage |
Uc(V) |
275 |
320 |
385 |
275 |
320 |
385 |
Voltage protection level |
Up(kV) |
1.0 |
1.3 |
1.3 |
1.3 |
1.5 |
1.5 |
Test classification |
Grade III testing |
Grade III testing |
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Poles |
2,4,1N |
2,4,1N |
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Structure type |
D,B type |
D,B type |
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operation status |
Window indicator |
Colorless or green:normal,red: fault |
Colorless or green:normal,red: fault |
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Backup protective |
Backup fuse |
gl/gG16A |
gl/gG16A |
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Backup CB |
C10 |
C16 |
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dimensions |
Refer to drawing no.1,3,4 |
Refer to drawing no.1,3,4 |
Project Name |
Parameter |
TU2-10 |
TU2-20 |
||||||
Nominal discharge current |
In(kA) |
20 |
30 |
||||||
Maximum discharge current |
Imax(KA) |
40 |
60 |
||||||
Maximum continuous operating voltage |
Uc(V) |
275 |
320 |
385 |
420 |
275 |
320 |
385 |
420 |
Voltage protection level |
Up(kV) |
1.5 |
1.5 |
1.8 |
2.0 |
1.8 |
2.0 |
2.2 |
2.2 |
Test classification |
Grade III testing |
Grade III testing |
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Poles |
1,2,3,4,1N,3N |
1,2,3,4,1N,3N |
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Structure type |
D,B,X type |
D,B,X type |
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operation status |
Window indicator |
Colorless or green:normal,red: fault |
Colorless or green:normal,red: fault |
||||||
Backup protective |
Backup fuse |
gl/gG40A |
gl/gG60A |
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Backup CB |
C32 |
C50 |
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dimensions |
Refer to drawing no.1,3,4 |
Refer to drawing no.1,3,4 |