Pfisterer CONNEX Connectors (MV-HV Inner Cone Plugs & Cable Terminations)

Pfisterer CONNEX Cable Plugs | Medium & High Voltage Cables 33kV 52kV

Thorne & Derrick | Distributed from Stock | Approved Supplier | UK & Export Sales

Thorne & Derrick stock and distribute Pfisterer CONNEX Connectors for medium and high voltage cable connection and termination of cables to electrical systems – we provide competitive prices for Pfisterer CONNEX connectors used to terminate polymeric insulated MV-HV cables into gas insulated switchgear and electrical equipment bushings from extensive stocks to UK and international destinations.

CONNEX Connectors

Pfisterer MV CONNEX cable connectors are specified to terminate medium/high voltage cables into gas insulated switchgear, RMU ring main units, transformers, transducers and capacitors typically distributing 33kV/52kV electricity – depending on MV bushings a range of sizes are available to terminate polymeric cables into inner cone equipment bushings with XLPE/EPR insulation, bonded or easy strip semicon, copper wire/tape screen and with or without armour.

Cable Connectors Overview

CONNEX Connectors Size 0 24kV 250A 25-70sqmm
CONNEX Connectors Size 1 33kV 630A 50-185sqmm
CONNEX Connectors Size 2 33kV 800A 35-300sqmm
CONNEX Connectors Size 3 33kV 1250A 50-630sqmm | Installation Tools
CONNEX Connectors Size 3s 52kV 1250A 120-630sqmm
Also: Surge Arresters MV HV Medium & High Voltage
Bushings MV HV Medium & High Voltage Up to 33kV

Cable Fittings for Medium Voltage Networks up to 66kV

CONNEX from Pfisterer meets all performance requirements for a universal system of separable connectors: fully insulated with metal housing and providing touch-proof properties – maintenance-free, suitable for outdoor use and waterproof. This means MV-CONNEX can be used even in the most extreme conditions including offshore wind energy sector – the Medium Voltage Cable Components product range includes traditional plug and socket combinations, multiple sockets, bus-bar connectors, surge arresters and voltage detecting systems to enable the installation, maintenance and commissioning of both onshore and offshore substation switchgear and transformers.

Pfisterer CONNEX Connectors | MV Connection System for Cables, Transformers and GIS

Stockists & Suppliers | Pfisterer CONNEX

CONNEX Benefits

75% time saving by the cable jointer for the first installation
Compact design for confined spaces and electrical equipment
Suitable for onshore and offshore indoor/outdoor substations
Quick change of location as a replacement transformer
Flexible conversion of medium voltage transformers
Touch-safe maintenance of MV electrical equipment
High protection against electromagnetic fields
Cable connectors certified for offshore applications
Tested safety according to IEC Standards
Support Services | Training Installation Courses
Standard & Custom Connectors | Enquiry Form
Supporting MV Products | Test Leads Dummy Plugs Earth Caps & Earthing/Current Testing

MV Cable Accessories for
Global Onshore and Offshore Substations | we can deliver from stock to UK and international projects.

CONNEX | Certified for offshore wind energy applications by the classification society DNV GL for the connection and termination of medium/high voltage power cables. Image DNV GL.

MV-CONNEX Technical data & Size classification list

Medium Voltage Cable Termination Connectors up to 52kV

The following table provides a specification overview of CONNEX connectors, manufactured by Pfisterer, to suit electrical equipment bushing sizes 0, 1, 2, 3 & 3S on medium/high voltage (MV HV) gas insulated switchgear and substation applications.

Should you require any selection support to enable the correct specification of MV HV Cable Accessories, including CONNEX type connectors please do not hesitate to contact us.

Bushing Size			0			1				2				3				3-S
Max. operating voltage	Um	kV	24kV			36kV				42kV				42kV				52kV
Rated voltage	U	kV	20kV			30kV				36kV				36kV				45kV
Phase-to-earth voltage	U0	kV	12kV			18kV				20.8kV				20.8kV				26kV
Nominal current	IN	A	250 Amps			630 Amps				800 Amps				1250 Amps				1250 Amps
Conductor round			stranded	solid	flexible	stranded	solid		flexible	stranded	solid		flexible	stranded	solid		flexible	stranded	solid		flexible
Cross-section ) (reference value)	Min.	sqmm	25	35	16	25	70		16	25	70		16	35	95		25	35	95		25
	Max.	sqmm	70	70	50	240	240		185	400	325		240	800	1000		400	800	1000		400
3)Diameter^*(design specification)	Min.	[mm]	5.6	5.6	5.6	4.9	8.3		6.5	4.9	8.3		6.5	6.1	10.5		6.5	17.5	10.5		6.5
	Max.	[mm]	11.9	11.9	11.9	20.1	20.1		18.3	24.1	22.0		20.6	36.0	36.0		26.8	36.0	36.0		26.8
Voltage tap			w/o			with^*¹⁾		w/o		.1) th / w/ow _i		w/o (XL)		with^*1) / w/o		w/o (XL)		with^*¹⁾ / w/o		w/o (XL)
*Diameter over insulation^3) after removing of the semi-conductive cable screen**	Min.	[mm]	12.7			13.5		13.5		13.5		36.0		15.5		46.0		15.5		46.0
	Max.	[mm]	23.5			31.5		36.0		36.0		44.0		46.0		55.0		46.0		55.0
Rated power withstand voltage 1min		[kV]	54			81				95				95				117
Partial discharges at 2 x UO		[pC]	≤ 10			≤ 10				≤ 10				≤ 10				≤ 10
Rated lightning impulse 1,2/50 ìs		[kV]	125			170				200				200				250
D.C. voltage test 15min.		[kV]	72			108				125				125				156
Rated short-time withstand current 1s 3s		[kA]	16 –			31.5 16				40 25				60 40				60 40
Rated impulse current		[kA]	40			125				125				150				150

*1) Earth the voltage tap test lead separately if it is not needed
*2) The range of the cross section is only valid if min. resp. max. diameter over conductor and min. resp. max. diameter over cable insulation are in the specified range
*3) The total range of cable connectors is covered by several CONNEX components

CONNEX Connectors | High Voltage Substations & Gas Insulated Switchgear

CONNEX | specified by UK Network Rail (PADS Approved) and international rail electrification projects for medium voltage power and distribution systems.

➡ Should you require customer service or technical support please contact us – view the full range of Pfisterer CONNEX Connectors below.

MV Cable Preparation | From stock and approved by Pfisterer for the installation of CONNEX connectors we distribute the most extensive range of Cable Jointing Tools for the preparation of medium voltage polymeric cables up to 66kV.

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