AIZ-220-D
Polymer bus-bar supports for movable fixation of aluminium tube of rigid bus-bar for the 220 kV voltage
The bus- bar supports of outdoor application AIZ-220-D are used for movable fixationof 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 (D- movable fixation platform of aluminium tubular bus),
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.
Type of bus-bar support of rigid bus-bar |
Diameter of aluminium tube of rigid bus-bar, mm |
Conventional diameter of tubular bus |
Diameter D, mm |
Spacing, H, mm |
Weight, kg |
AIZ-220-D50-4 UHL1 |
50/45 |
870 |
50 |
2190 |
78,0 |
AIZ-220-D60-4 UHL1 |
60/54 |
870 |
60 |
2200 |
78,0 |
AIZ-220-D70-4 UHL1 |
70/64 |
870 |
70 |
2225 |
78,5 |
AIZ-220-D80-4 UHL1 |
80/72 |
870 |
80 |
2230 |
79,0 |
AIZ-220-D90-4 UHL1 |
90/80 |
870 |
90 |
2230 |
79,4 |
AIZ-220-D100-4 UHL1 |
100/90 |
870 |
100 |
2235 |
80,0 |
AIZ-220-D110-4 UHL1 |
110/100 |
870 |
110 |
2245 |
80,5 |
AIZ-220-D120-4 UHL1 |
120/110 |
870 |
120 |
2245 |
80,5 |
AIZ-220-D130-4 UHL1 |
130/116 |
870 |
130 |
2255 |
81,0 |
AIZ-220-D140-4 UHL1 |
140/120 |
870 |
140 |
2260 |
81,5 |
AIZ-220-D150-4 UHL1 |
150/136 |
870 |
150 |
2260 |
81,7 |
AIZ-220-D170-4 UHL1 |
170/156 |
870 |
170 |
2280 |
83,5 |
AIZ-220-D200-4 UHL1 |
200/180 |
870 |
200 |
2310 |
85,2 |
AIZ-220-D250-4 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. 178* 4hols.diam.18 |