Separable Connectors For Eaton Xiria MV HV Switchgear RMU (Ring Main Unit)
Published 02 May 2018
Separable Connectors To Terminate Cables Into MV Switchgear
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Uploaded By:Â Chris Dodds Thorne & Derrick Sales & Marketing Manager
The following article confirms the current types and manufacturers brands of Separable Connectors that are approved to terminate medium/high voltage cables (11kV/12kV up to 24kV) into Ring Main Unit switchgear for application with Eaton Xiria 12kV/24kV medium voltage distribution networks.
Separable connectors manufactured by Nexans Euromold are moulded from high quality EPDM rubber, fully insulated and sealed, widely installed onto medium/high voltage pad-mounted switchgear, transformers, sectionalising cabinets and used to terminate MV cables into switchgear up to 24kV.
Separable Connectors
The MV switchgear manufactured by Eaton is provided with epoxy resin cable bushings or cones according to EN 50181 – the following types of separable connectors are manufacturer approved and compatible with their switchgear.
| MV Panel Type | Switchgear Bushing Cone | I [A] | Maximum Short-Circuit Current | Cable Connector | MV Cable |
| Load Break Switch | Interface C | 630A | 17.5-24kV 16kA-1 & 3s | Bolted T-Plug | Cu/Al XLPE |
| 3.6-12kV 20kA-1 & 3s | |||||
| Circuit Breaker | Interface A | 200A | 17.5-24kV 16kA-0.6s | Elbow Type Plug | Cu/Al XLPE |
| 3.6-12kV 20kA-0.4s | |||||
| Circuit Breaker | Interface C | 500A | 17.5-24kV 16kA-1 & 3s | Bolted T-Plug | Cu/Al XLPE |
| 3.6-12kV 20kA-1 & 3s |
- Cables are Polymeric Insulated XLPE type usually with operating voltages of 11kV/12kV up to 24kV
Interface A Circuit-breaker 200A including current transformers
Interface C Circuit-breaker 500A including current transformers
Interface C Load-break switch 630A without current transformers
MV Cable connectors & Terminations
Cable connectors are not included with the switchgear and should be ordered seperately.
For 24kV connections separable connectors with an earthed layer on the outside must be used, for 12kV connections connectors without an earthed layer might be used also.
Both types of separable connectors may not exceed certain dimensions to avoid incompatibility of the MV connector with the switchgear panel.
The interface bushings or switchgear cones in the Eaton medium voltage system are according to EN 50181. They can be of the Interface A (250A design, panel rating 200A) and Interface C (630A).
For connection of MV-HV cables into air insulated equipment or cable-end boxes we can provide a complete range of heat shrink cable terminations or for working on switchgear located in potentially explosive atmospheres such as offshore oil and gas platforms where it is not possible to use heat shrink type kits a cold shrink termination can be provided.
Full supporting range of MV-HV cable connectors to enable the termination and connection of copper or aluminium conductors onto busbar are available also from stock.
As an example some possible brands are shown here including Nexans Euromold connectors:
Euromold Type K158LR Xiria Circuit Breaker Outer Cone Type Interface A 200A Bushing
Euromold Type K430TB Xiria Circuit Breaker Outer Cone Interface Type C 500A Bushing
Tyco Type RSES Xiria Circuit Breaker Outer Cone Inerface Type A 200A Bushing
Tyco Type RSTI58 Xiria Load Break Switch Outer Cone Interface Type C 630A Bushing
Euromold Type K400TB Xiria Load Break Switch Outer Cone Interface Type C 630A Bushing
Tyco RSTICC58 Xiria Circuit Breaker Outer Cone Interface Type C 500A Bushing with double cable for metering (one primary cable and one cable for a voltage transformer)
Tyco Type RICS Xiria Load Break Switch Outer Cone Interface Type C 630A Bushing
Euromold
The Euromold range of Separable Connectors are suitable for the termination of power cables onto all MV-HV bushing interfaces:
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View the complete range of Nexans Terminations | Joints | Connectors
THORNE & DERRICK are national distributors LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment – we service UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
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