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Separable Connector System For High Voltage Networks

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HV-CONNEX 72.5 kV – 245 kV
The advantages of the CONNEX system are especially evident for high voltage applications. Simple on-site installation and factory tested, reliable components provide a safe and cost effective solution. Plug-in HV-CONNEX systems eliminate costly oil and gas insulation work during the installation process of transformers and gas insulated switchgear. CONNEX cable joints are more flexible, a big advantage when building or converting electrical systems. The wide range of products includes all the connection components needed to test the system and the attached equipment.
Test standard: TNT 10.97 CONNEX cable connector system
4 5-S 6 6-S
Current rating

IN (A)
2500 2500 2500 2500
Max. working voltage

Um (kV)
72,5 145 170 245
AC voltage test

50 Hz/1 min (kV)
140 275 325 460
Lightning impulse withstand voltage (BIL)

1,2/50 μs (kV)
325 650 750 1050
Partial discharge

2 x Uo (pC)
DC voltage test

15 min 6 x Uo (kV)
144 304 348 508
Rated short-time withstand current

0,5 sec (kA)
63 63 63 63
Rated short-time withstand current

1 sec (kA)
50 50 50 50
Nominal impulse current

160 160 160 160

The space required for mounting is approximately half that of conventional systems.
Flexibility is increased with the availability of horizontal, vertical and angled CONNEX connections to gas insulated switchgear and transformers. This often leads to space saving setups in the substation and reduced installation time.
Cable shield tests can be made without unplugging the system, further reducing installation time.
There is no unsealing or opening of the actual cable termination required, eliminating costly oil and insulating gas work during installation.
Improved safety is assured, using factory pre-assembled and tested components.


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