HV Bushings | High Voltage Transformers & Switchgear Bushings | 11kV 33kV 66kV
Porcelain | Epoxy | Resin Types
HV Bushings | High Voltage Bushings for Switchgear & Transformers from Stock | 11kV 33kV 66kV | UK & Export Sales
HV bushings
Thorne & Derrick supply from stock a complete range of Equipment Bushings which utilise epoxy and porcelain insulation designed for use in inner cone and outer cone type power transformers, switchgear, distribution transformers and pole mounted transformers operating at LV MV HV electrical voltages.
Porcelain insulation is a proven technology which provides low cost, long life and maintenance-free solutions which can withstand all environmental conditions.
For a given operating voltage porcelain insulators can be provided with varying creepage distances depending on environmental conditions.
Porcelain bushings are normally supplied with brown glaze however if required, they can be given a grey glaze. All bushings meet the requirements of BS EN ISO 60137 Standards.
♦ BS EN ISO 60137: Insulated Bushings for Alternating Voltages above 1000V
Please contact us for technical support, stock availability and competitive quotations for the complete range of porcelain bushings.
Bushings hv | Outer Cone
Dimensions & Ratings Of Nexans Euromold Bushings
The below diagrams show the dimensions of the Interfaces of equipment outer-cone bushings according to CENELEC standards EN 50180:2010 and EN 50181:2010. Should you require any selection or specification support for Medium & High Voltage Bushings please do not hesitate to contact us.
Nexans Euromold Bushings | Gas Insulated Switchgear (GIS)
The Euromold range of switchgear and transformer bushings use advanced materials to provide an extended life cycle of operational service requiring minimal maintenance, low loss and high efficiency, reducing energy consumption and increasing cost savings – the bushings are approved by electrical equipment OEM’s including Hitachi Energy (ABB), Schneider, Brush and Siemens with a product design and performance specification guaranteed to reduce downtime and maintenance costs.
Nexans Euromold Bushing Interfaces
- Bushings for MV HV (Medium & High Voltage Applications)
- 180AR-1 – interface A1 equipment bushing
- 180AR-2 – interface A1 equipment bushing
- 180AR-3 – interface A1 equipment bushing
- 180A-24P-O – interface A1 in-air bushing
- 400T1 – interface B2 equipment bushing
- 400AR-1 – interface B2 equipment bushing
- 400AR-2 – interface B2 equipment bushing
- 400AR-8 – interface B1 equipment bushing
- 400SFR-P – interface B2 equipment bushing
- 400AR-3 – interface C1 equipment bushing
- 400AR-4 – interface C2 equipment bushing
- 400AR-5 – interface C2 equipment bushing
- 400AR-6 – interface C1 equipment bushing
- 400SFR-B – interface C2 equipment bushing
- 400A-24B – interface C1 in-air bushing
- 670AR-2 – interface D2 equipment bushing
- 900AR-1 – interface F3 equipment bushing
- 900AR-2 – interface F2 equipment bushing
- 900AR-3 – interface F1 equipment bushing
- 900AR-4 – interface F1 equipment bushing
Nexans Euromold Bushings
SHORT CIRCUIT RATINGS for High Voltage Equipment
| Interface type |
Contact type | Current rating (A) | RMS symm. (kA) | Peak asymm. (kA) |
Voltage Um (kV) |
|||
| 1 sec. | 2 sec. | 3 sec. | ||||||
| Interface A | A1 | Pin and socket | 250 | 12.5 | 9.0 | 7.5 | 31 | 24 |
| Interface B | B1 | Pin and socket | 250 | 12.5 | 9.0 | 7.5 | 31 | 36 |
| B2 | Pin and socket | 400 | 16.0 | 11.3 | 9.2 | 40 | 36 | |
| Interface C Symmetrical Interface C Compact |
C1 | Bolted | 630 | 28.0 | 19.7 | 16.1 | 70 | 36 |
| C2 | Bolted | 1250 | 75.0 | 53.0 | 43.3 | >150 | 36 | |
| Interface D | D1 | Bolted | 800 | 50.0 | 35.3 | 28.8 | 125 | 24 |
| D2 | Bolted | 1250 | 75.0 | 53.0 | 43.3 | >150 | 24 | |
| Interface E | E1 | Bolted | 800 | 50.0 | 35.3 | 28.8 | 125 | 36 |
| E2 | Bolted | 1250 | 75.0 | 53.0 | 43.3 | >150 | 36 | |
| Interface F | F1 | Bolted | 2500 | – | – | – | – | 36 |
| F2 | Bolted | 630 | 28.0 | 19.7 | 19.1 | 70 | 52 | |
| F3 | Bolted | 1250 | 75.0 | 53.0 | 43.3 | >150 | 52 | |
Bushings hv | Inner Cone
Pfisterer Connex
CONNEX Medium & High Voltage Size 1, 2 & 3 Bushings | Surge Arresters | Connectors
Pfisterer CONNEX bushings for use with medium/high voltage air-insulated or gas-insulated SF6 switchgear and oil filled transformers with integration of surge arresters – optional connections for test adapters, short-circuit and earthing systems are available in the CONNEX range.
Typical applications: switching stations, circuit breaker units, motors, condensers and MV/HV electrical equipment including GIS and transformers – inner cone CONNEX bushings for gas insulated switchgear are available in size 1, 2 or 3 to integrate with most types of medium voltage electrical equipment.
Bushings
Euromold
The Webster-Wilkinson range from Thorne & Derrick covers:
Standard Porcelain Bushings
- Bushings suitable for use outdoors
- Offer enhanced insulation levels in excess of ISO 60137 requirements
- Ideal for use in transformer applications where high pollution levels exist due to the anti-corrosion plating
Power Bushings
- High specification porcelain bushings
- Suitable for use on power transformers
- Available in free-flow and self contained designs
Low PD Bushings
- Low partial discharge porcelain bushings
- Available from 12kV to 52kV
- Features a bonded flange arrangement
Cable Box Bushings
- Designed for use inside cable boxes
- Feature cork composite gaskets
- Available in Oil/Oil, Oil/Heat Shrink and Oil/Air designs
DIN Bushings
- Doughnut shaped oil seal compressed around a terminal ‘bolt’
- Porcelain brown glazed ceramic insulators
- Compliances – DIN 42530, DIN 42531, DIN 42532, DIN 42533, DIN 42534, DIN 42539, DIN 42541
EN Bushings
- Comply with current EN Standard requirements
- A plastic under oil arrangement gives enhanced anti-rotation properties
- No need for additional gaskets
ENA Bushings
- Energy Networks Association (ENA) compliant
- Suitable for ground mounted distribution transformers and unit substations, or
- pole mounted transformers
BEBS Bushings
- Compliant with British Electricity Boards Specifications
Switchgear & Transformer Bushings
Contact us for complete range of Indoor & Outdoor Transformer Bushings manufactured in accordance with IEC 60137 and product standards including EN50386 and EN50180. A standard range of porcelain bushings are offered according to EN50336 (historically BS2562 & BS6435) for use up to 36kV 4000A.
Cable box bushings are designed for use indoors but can be used in several insulating mediums typically oil/compound (fully insulated), oil /air (partially insulated) and air/air (partially insulated).
- BS EN 50386 Bushings up to 1kV and from 250A to 5kA for liquid filled transformers
- BS EN50180 Bushings above 1kV up to 52kV and from 250A to 3,15 kA for liquid filled transformers
- BS EN50336 Bushings for transformers and reactor cable boxes not exceeding 33kV/36kV
Bushing Connectors & Cable Terminations
Thorne & Derrick distribute the most extensive range of MV HV Medium & High Voltage Cable Joints, Terminations & Connectors from manufacturers including 3M, Prysmian, Nexans Euromold, Elastimold, Pfisterer CONNEX & SEANEX and Shrink Polymer Systems.
Heat shrink, cold shrink, push-on and slip-over cable accessories enable the jointing, terminating and connection of 11kV-33kV and 66kV-132kV cables to oil, air or gas insulated switchgear, transformers, motors and overhead lines distributing electricity at medium/high voltages.
MV HV High Voltage Cable Joints | Cable Terminations | Cable Connectors | Distributed from Stock | UK & Export Sales
