Switchgear are important nodal points in modern power distribution. Consequently, important is their reliable functioning, a clearly defined switching operation according to specified parameters as well as the protection of personnel and protection against operational interruptions when an overload occurs. The International Electrotechnical Commission (IEC) has taken up the task of developing the required specifications, with worldwide standardization and further evolving developments. The same applies to IEC 62271-200 – the standard for medium-voltage switchgear panels. MODUTEC has implemented these requirements and already offers the complete product range of air insulated switchgear today, type-tested according to IEC 62271-200 in terms of

Power Module: that incorporates the Basic VCB, Draw Out mechanism, Shutter Assembly and Spouts that connects the VCB terminals to the Bus Bars. This helps the Panel Builder to build the MV Panel with ease as the rest of fabrication is much simpler to execute and can be configured to customized requirements appropriately.

Basic Kit: that is Type Tested as per IEC 62271-200 with the enclosure to house the VCB with Draw Out mechanism, Shutter Assembly and Spouts that connects the VCB terminals to the Bus Bars with provision to mount the Bus Bars, CTs, PTs and compliant with the Internal Arc requirements. The LV Metering & Protection chamber would need to be further manufactured at the Panel Builder’s end, (size being based on the number of meters & relays etc) and fitted on this Basic Kit above the VCB chamber. This helps the Panel Builder to get a Type Tested MV Panel without actually undertaking to do the Tests himself!

The regulation governing medium voltage switchgear is IEC 62271-200, High-voltage switchgear and controlgear, Part 200: A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV. Regarding non-specific aspects involving switchgear, this Standard often refers to the general Standard for medium voltage switchgear and controlgear, i.e. IEC 62271-1, High voltage switchgear and controlgear Part

Common specifications:
Sub-clause 9.1 of IEC 62271-200 (Information to be given with enquiries, tenders and orders) specifies that enquirers requesting an offer or placing an order for metal-enclosed switchgear and controlgear, should not only provide the main electrical characteristics of the system but also the service conditions if different from standard, i.e.