AIZ-110-P
The bus- bar supports of outdoor application AIZ-110-P are used for supporting box-shaped buses of rigid bus- bars at 110 kV voltage and current frequency to 60 Hz in open distribution devices of electric power stations and substations.
Bus-bar supports are made in climatic design UHL, category 1 according to GOST 15543.1-89 and GOST 15150-69, in which:
- altitude above sea level not more 1000 m;
- thickness of the crust of ice less than 20 mm;
- wind speed in glaze condition to 15 m/s;
- wind speed in the absence of glaze to 40 m/s;
- environment value of temperature of air + 40 °C;
- environment value of temperature of air - 60°C.
Environment not explosive, the content of corrosion-active agents must comply with the atmosphere requirements I and II according to GOST 15150-69.
Decoding of bus-bar symbols:
AIZ-X1-X2X3-X4-UHL1,
AIZ- trade mark of bus-bar supports,
X1- nominal voltage in kV,
X2- index, which shows standard performance of bus-bar support (P- index for box-shaped buses),
X3- width of aluminium bus,
X4- pollution degree by GOST9920,
UHL- pollution performance by GOST 15150, installation category by GOST15150.
Variants of performance are introduced in table 1.
Table 1
Type of bus-bar support of rigid bus-bar |
Width of box-shaped bus, mm |
Spacing, H, mm |
Weight, kg |
AIZ-110-P100-4 UHL1 |
100 |
1232 |
22,6 |
AIZ-110-P125-4 UHL1 |
125 |
1257 |
22,7 |
AIZ-110-P150-4 UHL1 |
150 |
1282 |
22,8 |
AIZ-110-P175-4 UHL1 |
175 |
1307 |
22,9 |
AIZ-110-P200-4 UHL1 |
200 |
1332 |
23,1 |
AIZ-110-P225-4 UHL1 |
225 |
1357 |
23,3 |
AIZ-110-P250-4 UHL1 |
250 |
1382 |
23,5 |
Main technical characteristics
Technical specifications |
Value |
Rated voltage, kV |
110 |
Maximal working voltage, kV |
126 |
Test voltage of full lightning impulse, kV |
450 |
50%-ing discharge voltage of industrial frequency in polluted and humid condition, kV
-when the specific surface conductivity of the layer of pollution, mkSm |
110 |
Minimal breaking load on bend, kN, not less |
10 |
The minimal breaking torque, not less, kN*m |
1 |
Creepage distance, cm |
280 |
The highest peak of the rated short time withstand current (current of electrodynamic resistance), kA |
40 |
Acceptable traction of buses in the horizontal plane of bus-bar supports in the place of bus fixation, N |
1480 |
Dimensions of bottom flange, mm |
Diam. 178* 4hols.diam.18 |
The bus-bar support DOES NOT FALL TO THE GROUND in condition of overloads on bend, it just curves. That’s why it eliminates possibility of personal injury.