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AIZ-330-Z

 

The bus- bar supports of outdoor application AIZ-330-Z are used for tubular bus-bar supporting of rigid bus-bar at 330 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 (Z- rigid fitting of aluminium tubular bus-bar)

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 tube of rigid bus-bar, mm

Conventional diameter of bus

Spacing, H, mm

Weight, kg

AIZ-330-Z30-4 UHL1

30/25

30

3051

156,1

AIZ-330-Z40-4 UHL1

40/35

40

3051

156,2

AIZ-330-Z50-4 UHL1

50/45

50

3052

156,5

ОП-330-Z70-4 UHL1

70/64

70

3062

156,8

AIZ-330-Z80-4 UHL1

80/72

80

3070

158,0

AIZ-330-Z90-4 UHL1

90/80

90

3074

158,3

AIZ-330-Z100-4 UHL1

100/90

100

3086

158,6

AIZ-330-Z110-4 UHL1

110/100

110

3092

158,7

AIZ-330-Z120-4 UHL1

120/110

120

3094

159,3

AIZ-330-Z130-4 UHL1

130/116

130

3107

161,3

AIZ-330-Z140-4 UHL1

140/120

140

3112

161,3

AIZ-330-Z150-4 UHL1

150/136

150

3122

162,3

AIZ-330-Z170-4 UHL1

170/156

170

3142

163,5

AIZ-330-Z200-4 UHL1

200/180

200

3162

167,5

AIZ-330-Z250-4 UHL1

250/230

250

3187

163,5

 

 

Main technical characteristics

 

Technical 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

- when the specific surface conductivity of the layer of pollution, mkSm

315


30

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


 

 

Bus- bar supports are made on the basis of polymer rod insulators which are intended for isolation and fastening the opened distribution devices of electric power stations and substations. Insulators are made in accordance to IEC 62231standard.
 
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-Z....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.