For use in equipment insulated with fluid oil, typically for transformers, switchgears, capacitors…
Equipment bushings are epoxy insulated castings in accordance with CENELEC EN 50180.
Plug-in type equipment bushings meet the requirements of CENELEC EN 50180 and IEC 60137
The standard rings are equipped with 6 tabs for retaining the bail.
Epoxy transformer bushings for 24 – 36 – 72.5 kV
Epoxy transformer bushings for 24 - 36 - 72.5 kV
Epoxy resin material
| Raw material | Aromatic epoxy resin, hardened with dicarboxylic acid anhydrides filled with silanised silica | |
|---|---|---|
| Tensile strength | ISO R 527 | 79,28 N/mm² |
| Flexural strength | ISO R 178 | 102,45 N/mm² |
| Impact strength | ISO 179 | 9,2 kJ/m² |
| Noth impact strength | ISO 179 | 1,2 kJ/m² |
| Compressive Strength | ISO R 604 | 130 - 150 N/mm² |
| Critical stress intensity factor (K ic) | CG 216-0/89 | 1.9 - 2.1 Mpa.m 1/2 |
| Specific energy at break (Gic) | CG 216-0/89 | 300 - 340 J/m² |
| Glass transition point | ISO 11357-1 (DSC) | 115 +5/-10 °C |
| Class of flammability | UL 94 | V1 >12mm |
| Water absorbtion | ISO 62 | 0,018% by wt. |
| Coeff. of linear thermal expansion | DIN 53752 (20 - 80°C) | 31-36*10-6 K-1 |
| Tracking resistance | IEC 60112 | CTI >600 -0.0 |
| Dielectric constant | DIN 53483 | 4,2 (23 °C, 50 Hz) |
| Dissipation factor | IEC 60250 | 0,0309 % (23°C - 50 Hz) |
| Dielectric strength | IEC 60243 - 1 | 17 - 20 kV/mm |
| HV arc resistance | ASTM D 495 | 182 - 189 seconds |
| Density | ISO 1183-1 | 1.9 g/cm³ |
| Color | brown |
Epoxy transformer bushing 24 kV - 250 A - Interface A
Epoxy transformer bushing 24 kV - 250 A - Interface A
Epoxy transformer bushing 24 kV - 250 A - Interface A
Epoxy transformer bushing 36 kV - 630 A - Interface C
Epoxy Transformer bushings 24-36-72,5 kV
| Article | Art | Interface | Rated Voltage | Rated current | Thread | A | B | C | Weight | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | kV | A | mm | mm | mm | kg | |||||
| BUS-24-250-R | B21353 | A | 24 | 250 | M10 | 189,5 | 73 | 110 | 1,06 | ||
| BUS-24-250-N | B21352 | A | 24 | 250 | M10 | 224,5 | 108 | 110 | 1,20 | ||
| BUS-24-250-L | B21351 | A | 24 | 250 | M10 | 284,5 | 168 | 110 | 1,43 | ||
| BUS-36-630 | B21350 | C | 36 | 630 | M16 | 330 | 150 | 128 | 2,50 | ||
| BUS-72,5-630 | B22647 | F | 72,5 | 630 | M16 | 384 | 175 | 150 | 4,90 | ||
| BUS-72,5-1250 | B22648 | F | 72,5 | 1250 | M16 | 384 | 175 | 150 | 5,75 |