HV Outdoor Cable Terminations | Gas Filled & Insulating Liquid Terminations

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HV Outdoor Cable Terminations 72.5kV up to 550kV

The Sudkabel range of HV Outdoor Cable Terminations includes both Gas Filled Outdoor Terminations & Insulating Liquid Outdoor Terminations, covering EHV and HV maximum voltage capabilities from 72.5kV up to 550kV. The High-Voltage Outdoor Terminations are designed to ensure safe, durable and efficient connections between XLPE-Insulated Cable systems and Overhead Lines, transformers or switchgear.

Sudkabel‘s HV Outdoor Cable Termination range is available in two advanced insulation technologies Gas Filled (Sudkabel EHFVCS) and Insulating Liquid Filled (Sudkabel EHFVC & EHFV variants), engineered for the toughest environmental and operational demands, with applications being electrical substation outdoor connections, transformer interfaces, polluted industrial zones, space-constrained sites and more. Additionally, both solutions are compliant with Power Cable Standards IEC 60840, IEC 62067 & IEC 60815, ensuring the HV Outdoor Cable Terminations are compatible with international grid standards and an extensive range of extra high-voltage and high-voltage applications.

Need help finding the right HV Cable Joints, Terminations & Connectors for your operations? Contact our experts:

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Outdoor Terminations Gas Filled & Insulating Liquid Technical Specifications

The following tables provide further insight on the technical specifications of Sudkabel‘s EHV HV Outdoor Cable Terminations, featuring both Liquid Insulation Terminations (EHFVC and EHFV variants) & Gas Filled Terminations (EHFVCS):

Sudkabel HV Outdoor Cable Terminations (Filled with Liquid Insulation) Technical Specifications
Highest voltage Um	kV	72.5kV	123kV	145kV	170kV	245kV	300kV	362kV	420kV	550kV
Variant with composite insulator	–	EHFVC	EHFVC	EHFVC	EHFVC	EHFVC	EHFVC	EHFVC	EHFVC	EHFVC
Variant with porcelain insulator	–	EHFV	EHFV	EHFV	EHFV	EHFV	EHFV	EHFV	EHFV	EHFV
Impulse lightning voltage	kV	350	550	650	750	1050	1050	1175	1425	1550
Switching impulse voltage	kV	–	–	–	–	–	850	950	1050	1175
Normative document	IEC	60840 60815	60840 60815	60840 60815	60840 60815	62067 60815	62067 60815	62067 60815	62067 60815	62067 60815
Cu/Al conductor (min.)	mm²	95	150	240	240	400	400	500	630	800
Cu/Al conductor (max.)	mm²	3200	3200	3200	3200	3200	3200	3200	3200	3200
Rated current (max.) *	A	3150	3150	3150	3150	3150	3150	3150	3150	3150
Rated peak current *	kA	170	170	170	170	170	170	170	170	170
Rated short-time withstand current *	kA/s	63/3	63/3	63/3	63/3	63/3	63/3	63/3	63/3	63/3
Standard pollution class	–	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy
Length with class d/III (approx.) EHFVC/EHFV [L]	mm	1350/1020	1720/1490	1980/1700	2290/1950	2590/2540	3070/3040	3580/-	4100/-	5020/5130
Weight with class d/III (approx.) EHFVC/EHFV **	kg	80/-	90/175	95/195	105/235	370/470	390/570	780/-	960/-	1100/1400
Base plate dimensions [a]	mm	420	420	420	420	600	600	700	700	700
Hole distance [b]	mm	345	345	345	345	500	500	600	600	600
Hole diameter [Ø c]	mm	18	18	18	18	23	23	23	23	23
Bolt diameter [Ø d] (≤1000 mm² />1000 mm²)	mm	30/50	30/50	30/50	30/50	30/50	30/50	30/50	30/50	30/50
Bolt length [I]	mm	100	100	100	100	100	100	100	100	100

 

Sudkabel HV Outdoor Cable Terminations (Gas Filled) Technical Specifications
Highest voltage Um	kV	123kV	145kV	170kV	245kV	300kV	362kV	420kV	550kV
Variant with composite insulator	–	EHFVCS	EHFVCS	EHFVCS	EHFVCS	EHFVCS	EHFVCS	EHFVCS	EHFVCS
Impulse lightning voltage	kV	550	650	750	1050	1050	1175	1425	1675
Switching impulse voltage	kV	–	–	–	–	850	950	1050	1240
Normative document	IEC	60840 60815	60840 60815	60840 60815	62067 60815	62067 60815	62067 60815	62067 60815	62067 60815
Cu/Al conductor (min.)	mm²	150	240	240	400	400	500	630	800
Cu/Al conductor (max.)	mm²	2500	2500	2500	2500	3200	3200	3200	3200
Rated current (max.) *	A	3150	3150	3150	3150	3150	3150	3150	3150
Rated peak current *	kA	170	170	170	170	170	170	170	170
Rated short-time withstand current *	kA/s	50/3 63/1	50/3 63/1	50/3 63/1	50/3 63/1	50/3 63/1	50/3 63/1	50/3 63/1	50/3 63/1
Standard pollution class	–	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy	≥ d/III heavy
Length with class d/III (approx.) [L]	mm	1925	2192	2192	3120	3120	3650	5240	5240
Weight with class d/III (approx.) **	kg	180	200	200	350	350	650	800	800
Max. longitudinal force effect	kN	2	2	2	2	2	2	2	2
Base plate dimensions [a]	mm	420	420	420	600	600	800	800	800
Hole distance [b]	mm	345	345	345	500	500	700	700	700
Hole diameter [Ø c]	mm	18	18	18	23	23	23	23	23
Bolt diameter [Ø d]	mm	50/60***	50/60***	50/60***	60	60	60	60	60
Bolt length [I]	mm	100	100	100	100	100	100	100	100

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Insulating Liquid Outdoor Terminations | Sudkabel EHFVC & EHFV

EHV HV Liquid-Filled Terminations with Composite or Porcelain Insulators

What’s the difference? Sudkabel‘s EHFVC Liquid-Filled Termination offers a lightweight, silicone-sheathed composite insulator, whereas the EHFV Liquid-Filled Termination provides a more rugged porcelain insulator. However, both HV Outdoor Cable Terminations ensure operational reliability, longevity, and easy adaptation to site-specific challenges.

Key Features & Benefits

• Wide Voltage Range: Available for 72.5kV up to 550kV installations.

• Material Variants:

  • EHFVC: Fibreglass-reinforced plastic tube with silicone sheds

  • EHFV: High-strength porcelain insulator

• Sealed Field Control: Integrated push-on silicone rubber stress cone provides precise electric field control and seals the base of the termination.

• Synthetic Insulating Fluid: Filled with stable polyisobutylene for enhanced dielectric properties and long service life.

• Heavy Pollution Ready: Extended creepage distances available for areas with high environmental contamination.

• Altitude Adaptability: Optional longer insulators or higher voltage class accessories for sites above 1000 m.

• Space Efficiency: Compact short-height models support up to 30° installation inclination.

• Flashover Protection: Optional arcing horns enhance protection during overvoltages.

• Custom Support Structures: Available with resin-insulated post insulators for advanced mechanical integration.

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Gas Filled Outdoor Terminations | Sudkabel EHFVCS

EHV HV Gas Insulated Plug In Terminations 123kv – 550kV

The Sudkabel EHFVCS range offers a high-performance, maintenance-efficient Plug-In Terminations, which are gas filled instead of liquid insulated. These high-voltage cable terminations are designed for quick installation, minimal cable preparation, and feature compact dimensions.

Key Features & Benefits

• Rapid On-Site Assembly: Plug-in design drastically reduces installation time compared to liquid-filled terminations.

• Compact & Flexible: Minimal required cable length and adjustable mounting positions ensure adaptability even in tight installations.

• Pre-Filled with Insulating Gas: Eliminates the mess, complexity, and environmental considerations of liquid insulation.

• Installation Versatility: Can be installed at any angle depending on shed alignment.

• Optional Heating System: Enables use in extremely low-temperature environments.

• Pollution & Altitude Ready: Extended creepage paths and adaptable insulation for challenging climates and high elevations (>1000 m).

• Composite Insulation: Lightweight fibreglass-reinforced support tube with integrally cast high-grade silicone rubber sheds.

• Integrated Field Control: Elastic field control made of silicone rubber, permanently pre-assembled with the epoxy-resin socket-type insulator.

• Sealed Epoxy Interface: The termination is connected to the base plate via a socket-type epoxy resin insulator for a secure and weather-resistant seal.

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Gas Filled & Insulating Liquid Terminations Applications & Compliances

Südkabel’s EHFVCS Gas Filled Outdoor Terminations and EHFVC & EHFV Insulating Liquid Outdoor Cable Terminations are engineered to perform across a wide range of challenging installation scenarios. Including high-voltage substation connections, transformer interfaces, and harsh environmental conditions such as high altitudes, industrial pollution, and limited space, the Sukdabel HV Outdoor Cable Terminations offer adaptable, high-performance solutions that meet the demands of your operations.

• Substation Outdoor Connections: Reliable terminations from XLPE high-voltage cables to overhead systems or bushings.

• Transformer Interfaces: Safe and stable link between HV cable systems and transformer bushings.

• Mountain and High Altitude Sites: Modified insulator design available for installations >1000 m.

• Polluted Industrial Zones: Extended creepage and protective coatings available for dusty, coastal, or chemical environments.

• Space-Constrained Sites: Models with compact installation geometry and angled mounting capability up to 30°.

♦ IEC 60840 Cable Standards

IEC 60840 is Type-tested for performance in HV Outdoor Cable Terminations up to 170 kV.

♦ IEC 62067 Cable Standards

Applicable to accessories used in EHV cable systems >150 kV, confirming the EHFVCS is suited for the highest network classes.

♦ IEC 60815 Cable Standards

Pollution performance rating guarantees suitability for industrial, desert, or marine environments requiring long creepage distances.

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Südkabel | EHV HV Cable Joints, Terminations & Connectors

Thorne & Derrick | Distributors, Stockists & Suppliers

With over 125 years of experience, Südkabel has been at the forefront of market-leading cable technology, particularly in the development of XLPE-Insulated Cables. Südkabel’s product portfolio includes XLPE Power Cables up to 550 kV and EHV & HV Cable Accessories such as Plug-in Terminations, Compact Terminations, Outdoor Cable Terminations, Dry & Solid Outdoor Cable Terminations, Silicone Rubber Heat Shrink Cable Joints, as well as accompanying Cable Materials.

Get in touch with our team of experts – offering 40+ years of industry experience, we distribute the most extensive range of MV HV Medium & High Voltage Cable Joints, Terminations & Connectors from manufacturers including Südkabel, 3M, Prysmian, Nexans Euromold, Elastimold, Pfisterer CONNEX & SEANEX and Shrink Polymer Systems.

Data Sheets

• Sudkabel Cable Accessories for EHV HV Cables | Catalogue
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