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Service grids are a robust flat plate style of resistor manufactured from 304 grade stainless steel elements insulated using mica and welded together to form a continuous low inductance resistance path. Service grid resistors can be supplied as either open banks or housed in ventilated enclosures.
Every grid has punched holes within the welded contact section to give intermediate tapping points.
Enclosures
There are two standard enclosure styles for service grid resistors; Industrial Housings for general purpose applications and System 22 Housings designed for steel mills, this allows the replacement of individual banks without disturbing other banks in the enclosure.
Either type of enclosure can be supplied as painted mild steel, hot dip galvanized to BS729 or natural finish grade 304 stainless steel.
HPR GRIDS
Versatile, robust construction
Good for continuous and short-term ratings
High ratio of surface area to active mass
Widest range of resistor materials
EN GRIDS
Best for force cooling
Excellent under vibration
All-welded connections
Fully automated manufacture
Cressall Resistors Ltd, Evington Valley Road, Leicester, LE5 5LZ U.K. Tel: (+44) (0)116 273 3633