Eaton devises cost-effective solution for metering electrical loads and controlling lighting
The requirement to meter the principal electrical loads for the new Orsett Hall Hotel Pavilion in Essex has been simplified using Memshield 2 distribution boards from Eaton Electric with added metering panels.
Being able to work with the electrical contractor to develop solutions for metering energy and controlling lighting helped Eaton Electric win a contract for a new multi-purpose conference and function centre near Grays in Essex. Orsett Hall Hotel Pavilion has a gross floor area of just over 500 m2, so principal loads have to be metered to account for energy use — the cost of which was considerably reduced using boards specially built to incorporate separate metering of lighting and small-power loads. Eaton offered the contractor, Essex Electrical Services, a split-load meter pack which sits below two Memshield 2 distribution boards to provide metering of supplies to each board. At Orsett Hall, there are two 200 A 24-way TPN boards, one serving lighting loads and the other serving single-phase and 3-phase supplies — including ring circuits, air-handling plant, kitchen equipment etc. In addition to the price advantage of used a ready-made meter pack, there was an installation advantage in that the two Memshield 2 boards are fed by a single incoming cable via a rotary disconnect switch. Eaton also provided cost-effective lighting control using its Studio 2 and 3 dimming systems. The lighting installation includes a mixture of high-frequency compact fluorescent lighting and low-voltage tungsten-halogen downlighters. The main function area, the 300-seat Grahame Thomas Pavilion is used for wedding receptions, christenings, dinner dances and school proms. It can be divided into two separate areas. Eaton devised a scheme offering four pre-determined lighting scenes in each area. A key-operated switch enables them to be operated as a single integrated system or as two systems. Special care was taken to avoid problems with colour mismatch between the CFl and LV lighting when dimmed. A control linked to the fire-alarm system brings all lighting up to maximum power in the event of a fire alarm.
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