• Robert Dansertlaan 250, 1702 Groot-Bijgaarden, Belgium

Porseleinen LV-steunisolatoren

Porseleinen laagspanning steunisolatoren

Laagspanning keramische steunisolatoren – Catalogusblad
Download

Ceramic / porcelain material

Ceramic groupCeramic groupCeramic groupCeramic group
Sub-GroupC-110C-120C-130C-221
Silicious
Porcelain
Aluminous porcelain
Standard strength
Aluminous porcelain
High strength
Steatite low/loss
angle
PropertiesPropertiesPropertiesSymbolsUnitsAL2O3
<30%
AL2O3
30-50%
AL2O3
>50%
Apparent prosity (open)max.max.PaVolume %0.00.00.00.0
Bulk densitymin.min.δag/cm32,22,32,52,7
Flexural strengthmin.unglazedRfN/mm25090140140
min.glazedRfN/mm260110160-
Modulus of elasticityminEGPa6070100100
Mean coefficient linear expansionα 20-100°C10-6K-13-63-64-76-8
α 20-300°C10-6K-13-63-65-77-9
α 20-600°C10-6K-14-75-75-78-9
Specific heat capacity20°-100°CcpJ/kgK750÷900750÷900750÷900790÷920
Thermal conductivity20°-100°CλW/mK1÷2,51,2÷2,61,5÷4,02,3÷2,8
Resistance to thermal shockmin.ΔtK150150150100
Electric strengthmin.EdkV/mm20202020
Withstand voltagemin.UkV30303030
Relative permittivity48÷62 Hzεr6÷76÷76÷7,56
Dissipational 20°Cmax.48÷62 Hztanδ10-32525301,5
max.1 kHztanδ10-3----
max.1 MHztanδ10-31212151,2
Volume resistivity in terms of temperaturemin.20°CρvΩcm1013101310131012
min.200°CρvΩcm1081081081011
min.600°CρvΩcm104104104107
Temperature corresponding to a volume resistivitymin.100 MΩcmtK100°C200200200500
min.1 MΩcmtK1°C350350350800
For post insulators, hot-dip galvanized cast iron flanges assembled or with :
Sulphur cement = excellent mechanical performances and max use temperature 90°C - Reduced assembly time
Portland cement = max use temperature 200°C - Drying time in mould is longer

Keramische laagspanning steunisolatoren

Keramische laagspanning steunisolatoren

Keramische laagspanning steunisolatoren

Keramische laagspanning steunisolatoren

Keramische laagspanning steunisolatoren

Ceramic low voltage stand off insulator.

Ref.123HH2H3Ød1d2l1l2d3d3l3l3Weight
kVkVkVmmmmmmmmmmmmmmmmmmmmmmmmkg
BAC334P4,2-122123331644101044660,014
BAC337P6-152527372244101044660,021
BAC390P8-28404253355612125611110,061
BAC33382,527363849355612125611110,065
BAC336145,634555786451212303021215250,210
BAC33214,55,535575960355612125611110,090
1 - Nominal Voltage (Un) - 50 Hz
2 - Nominal Voltage (Un) - 20 MHz
3 - Rated Power Frequency Withstand Voltage, dry (50 Hz, 1 min)
H - Height insulating part
H2 - Usable Height support
H3 - Height with 1 male rod