CONNEX: Powerful system for strong interfaces in power grids

With the CONNEX connecting and jointing system for voltages up to 550 kV, constructors and operators of power grids benefit from advanced means and many options for the optimized use of transformers, gas-insulated switchgear (GIS) and cable systems. 

CONNEX offers the widest range of modular connecting and jointing components in plug-in technology accompanied by many practical extra tools. The list on the right gives you an overview of the CONNEX product range. This variety combines elementary properties and unique advantages for resilient power grid operation. Indoors and outdoors, above and below ground. In cities and made caverns, on land and at sea:

• Versatile in use, flexible for repurposing
• Minimizes installation workload and risks
• Enables compact and environmentally conscious equipment designs
• Safe, robust and reliable in lifelong operation
• Certified for offshore, proven in use worldwide

CONNEX for GIS and transformers

CONNEX streamlines operations, protects existing equipment and makes the use of transformers and GIS more flexible in all life cycle phases.

Transformers and GIS form a unit with built in CONNEX sockets and can therefore be delivered in a closed state, factory tested, ready for transportation and connection. Transformers and GIS remain also closed when CONNEX cable connectors, bushings or surge arresters are installed on them. This is done efficiently by a plug-in process – without interfering with the equipment, without handling insulating oils or gases.

Likewise, CONNEX components can be dismantled and replaced at any time, for example to switch from bushings to cable connectors or vice versa. CONNEX extra tools for current and voltage testing or earthing and short-circuiting are also easy to connect. In addition, CONNEX sockets enable variable treatments of star points for protective measures on the transformer.

All these positive effects may also be achieved for equipment in operation - CONNEX can be retrofitted.

Modular cable systems with CONNEX components ensure optimum operational readiness for plannable work and unexpected applications with sustainable solutions.

Quick Deploy systems can be used as quickly as possible and as versatile as necessary. To this end, they are made in needs-based configuration levels and for specified areas of application: As basic systems consisting of highly flexible cables with prefitted CONNEX cable connectors. Flexibly expandable to Plus systems with various CONNEX joints. Both for numerous applications such as construction work, testing, as bypasses in the event of equipment failures, etc.

Or as complete solutions for extensive applications and complex requirements, including complementary tools and consumables, with installation and application training. Two examples: The Universal Repair Kit enables high-voltage cable routes to be repaired as fast as possible. It can be used flexibly on all specified cable types and also permanently as a lasting solution. The efficient and safe use of mobile units is made possible by comprehensive CONNEX connecting and jointing systems, whether for single transformers and GIS or for complete substations.

Pre-assembled CONNEX systems are also in demand offshore: They can be integrated into prefabricated modules ready for connection and can implement all equipment connections and cable jointings in and to offshore wind farms - from wind turbine nacelles and offshore platforms to equipment in onshore substations.