AIZ-330-E
- 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 (E- double fixation of aluminium tubular buses),
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-330-Е50-4 UHL1 |
50/45 |
870 |
50 |
3052 |
158,0 |
AIZ-330-Е60-4 UHL1 |
60/54 |
870 |
60 |
3062 |
158,0 |
AIZ-330-Е70-4 UHL1 |
70/64 |
870 |
70 |
3062 |
158,1 |
AIZ-330-Е80-4 UHL1 |
80/72 |
870 |
80 |
3070 |
158,2 |
AIZ-330-Е90-4 UHL1 |
90/80 |
870 |
90 |
3086 |
158,4 |
AIZ-330-Е100-4 UHL1 |
100/90 |
870 |
100 |
3092 |
158,7 |
AIZ-330-Е110-4 UHL1 |
110/100 |
870 |
110 |
3092 |
160,2 |
AIZ-330-Е120-4 UHL1 |
120/110 |
870 |
120 |
3094 |
160,8 |
AIZ-330-Е130-4 UHL1 |
130/116 |
870 |
130 |
3107 |
160,9 |
AIZ-330-Е140-4 UHL1 |
140/120 |
870 |
140 |
3122 |
161,0 |
AIZ-330-Е150-4 UHL1 |
150/136 |
870 |
150 |
3122 |
161,3 |
AIZ-330-Е170-4 UHL1 |
170/156 |
870 |
170 |
3142 |
161,5 |
AIZ-330-Е200-4 UHL1 |
200/180 |
870 |
200 |
3162 |
161,7 |
AIZ-330-Е250-4 UHL1 |
250/230 |
870 |
250 |
3162 |
161,9 |
Main technical characteristics
echnical specifications |
Value |
Rated voltage, kV |
330 |
Maximal working voltage, kV |
363 |
Test voltage of full lightning impulse, kV |
1175 |
50%-ing discharge voltage of industrial frequency in polluted and humid condition, kV |
315 |
Minimal breaking load on bend, kN, not less |
8 |
The minimal breaking torque, not less, kN*m |
950 |
Creepage distance, cm |
920 |
The highest peak of the rated short time withstand current (current of electrodynamic resistance), kA |
160 |
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. 300* 8hols.diam.18 |
The monolithic core of insulator of bus-bar support eliminates possibility of internal discharge and breakdown, unlike tubes filled with foam, as well as leakage of current in internal cavity and on the wall of tube as consequence of condensation in contrast to hollow tubes. Flanges of bus-bar supports are made from cast high-strength aluminium alloys. Absence of welds in flanges allows applying insulators in the conditions of low temperature in Siberia.
Advantages of bus-bar supports AIZ-330-E....UHL1
Thanks to the silicone adhesive coating on the insulating body of the bus-bar support useful service life- 30 years; high firmness to influence of acids and alkalis, to an ultra-violet exposure; resistance to erosion and tracking; high hydrophobic properties; light weight; more resistible for acts of vandalism; ensures safety conditions even during installation and exploitation works.
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.