Eaton CROUSE-HINDS SERIES Operating Instructions Manual

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Eaton CROUSE-HINDS SERIES Operating Instructions Manual Manual pdf 25 page image

2510.4 Bohrflächen 10.4 Zones de forage10.4 Drilling areasThe maximum enclosure entry areas and entry quantities can be calculated from the overall dimensions of the enclosure.The usable entry area an maximum quantity of entries is calculated using table 10.4.1 and table 10.4.2.The table 10.4.1 and table 10.4.2. are used to calculate the maximum number of entries allowed on each enclosure face.For an enclosure side face the sizes are height and depth -25.4 (remove the depth of the lid.).Subtract the face of edge clearance from each size and multiply by each other.Finally multiply by the face area factor to give the total usable.Available glanding area =(Height - 2 * clearance) * (depth - lid depth - 2 * clearance) * Area FactorFor example: Enclosure 800 mm by 600 mm by 250 mmUsable right side area:800 - (2 * 20) * 250 - 25.4 - (2 * 12.5) * 0.70 = 106,187 mm²Based on an M20 entry using a surface area of 844 mm², the maximum quantity ofM20 Entries is106,187 mm² / 844 mm² = 125 pcsThis calculation should always be rounded down to the nearest whole number and additional restrictions below shouldalso be considered.In addition to the above the following must also be taken into account.No entry is permitted within 40 mm of an earth stud, a mounting foot or an internal mounting lug.The calculation takes into account the unusable area with round entries (based on minimum centres, 75% is maximumarea that can be utilised) and practical reductions to maintain functional performance requirements.Percentage of Entry that can be populated & Edge clearanceSmallest up to size 1000x800x400 Size 1001x801x400 up to largest sizeEnclosure Face Face Area Factor Face Edge Clearance Face Area Factor Face Edge ClearanceTop & Bottom Face A & B 0.70 12.5 mm / 20 mm 0.45 20 mm / 20 mmSides (Left & Right) Face C & D 0.70 12.5 mm / 20 mm 0.45 20 mm / 20 mmBack Face E 0.25 50 mm / 50 mm 0.10 100 mm / 100 mmLid Face F 0.30 50 mm / 50 mm 0.15 50 mm / 50 mmStandard cable entry area required - Based on Capri ADE 1FM12 M16 M20 M25 M32 M40 M50 M63Area required per piece 315 mm² 496 mm² 844 mm² 1248 mm² 2548 mm² 4076 mm² 7472 mm² 11692 mm²Table 10.4.1Table 10.4.2

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