AIZ-220-SH
The bus- bar supports of outdoor application AIZ-220-SH are used for fixation of two aluminium tubular buses of rigid bus- bars at 220 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 (SH- hinge fixation of aluminium tubular buse),
X3-conditional diameter 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 |
Diameter of tube of bus-bar, mm |
Distance between buses, L, mm |
Conditional diameter of bus |
Spacing, H, mm |
Weight, Kg |
AIZ-220-SH50-4 UHL1 |
50/45 |
870 |
50 |
2190 |
78,0 |
AIZ-220-SH60-4 UHL1 |
60/54 |
870 |
60 |
2200 |
78,0 |
AIZ-220-SH70-4 UHL1 |
70/64 |
870 |
70 |
2225 |
78,5 |
AIZ-220-SH80-4 UHL1 |
80/72 |
870 |
80 |
2230 |
79,0 |
AIZ-220-SH90-4 UHL1 |
90/80 |
870 |
90 |
2230 |
79,4 |
AIZ-220-SH100-4 UHL1 |
100/90 |
870 |
100 |
2235 |
80,0 |
AIZ-220-SH110-4 UHL1 |
110/100 |
870 |
110 |
2245 |
80,5 |
AIZ-220-SH120-4 UHL1 |
120/110 |
870 |
120 |
2245 |
80,5 |
AIZ-220-SH130-4 UHL1 |
130/116 |
870 |
130 |
2255 |
81,0 |
AIZ-220-SH140-4 UHL1 |
140/120 |
870 |
140 |
2260 |
81,5 |
AIZ-220-SH150-4 UHL1 |
150/136 |
870 |
150 |
2260 |
81,7 |
AIZ-220-SH170-4 UHL1 |
170/156 |
870 |
170 |
2280 |
83,5 |
AIZ-220-SH200-4 UHL1 |
200/180 |
870 |
200 |
2310 |
85,2 |
AIZ-220-SH250-4 UHL1 |
250/230 |
870 |
250 |
2315 |
86,9 |
Main technical characteristics
Technical specifications |
Value |
Rated voltage, kV |
220 |
Maximal working voltage, kV |
252 |
Test voltage of full lightning impulse, kV |
950 |
50%-ing discharge voltage of industrial frequency in polluted and humid condition, kV |
220 |
Minimal breaking load on bend, kN, not less |
8 |
The minimal breaking torque, not less, kN*m |
2 |
Creepage distance, cm |
570 |
The highest peak of the rated short time withstand current (current of electrodynamic resistance), kA |
100 |
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. 225* 4hols.diam.18 |