Fortress Simplifies Switchgear Interlocking

Fortress Interlocks has explained how it is able to simplify switchgear interlocking to protect personnel and plant in distribution systems. The company has extensive experience in ensuring that earth/ground switches cannot be closed on live busbars and that isolation procedures are strictly adhered to. Fortress recognises that creating a simple interlocking scheme is critical - no one wants to work with a system that is too complex to follow; operators will simply look for shortcuts.

In many power distribution projects, key interlocks are often left to the last minute to source and fit, which can result in confusion on site during final commissioning. Larger projects also have the added complication of multiple switchgear suppliers who, unless key interlocks are specified, often supply their standard product, which can be awkward and unsuitable. Involving Fortress in the initial stages of designing the interlocking system saves time and money via custom-built key interlock systems that are safe and, in many cases, very simple.

Fortress translates project switching requirements into physical hardware ensures a defined sequence of events, working closely with manufacturers of switchgear to ensure the correct products are utilised and systems can be integrated on site. The company has a key coding capability that ensures locks and keys can be clearly identified with their associated equipment. By mastering and part mastering, Fortress's key coding actually helps reduce the number of keys and simplifies the system.

Key coding is managed by Fortress to guarantee that there are not two keys the same on site, which can compromise safety; key coding also allows Fortress to customise a solution for all applications. With the addition of the new SL mini lock, Fortress offers a complete range of trapped key interlocks to suit all switchgear.

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