H3-VV-6B n eupex 125 Helical gear Reduction Boxes H3

Flender/Flender Gear Units/Helical gear Reduction Boxes H3

Control & Instru mentation (&) Chapter-0.0 2, MECON Limited, All Right Reserved Page 4 of 1 All materials shall be designed to withstand extremes of all ma gnetic, electrical, mechanical and thermal stresses which may be encountered during normal and abnormal operating conditions. []. Cables Design Criteria Cables shall be so designed and manufactured that damage does ot occur in handling, during transit, storage, installation and operation nder any or all the climatic and operating conditions which they may be subjected to. Outer sheath of cables shall have rodent and termite repulsion property. Cables shall be suitable for laying in conduits, ducts, trenches, trays or for direct burial in ground in both and wet locations. Cables shall be capable of operating satisfactorily under the power supply voltage and frequency variations as specified in the specification. Current ratings and ratings factors of cables shall not be worse than the ones specified in IS: 3. Performance characteristics of ca bles shall be based on the fol lowing conditions of laying: 1. All cables shall be laid in single layer on tray and multi- buried in ground. 2. Cables shall be suitable for laying in duct or burying in ground up to depth of 1.5 meters with uncontrolled back fill and chances of floodi ng by water. All instrumentation cables shall be Flame Retardant Low Smoke ( FRLS) type (Both for inner she ath and outer sheath). Fillers in multiple conductor cables shall be flame retardant. All cables shall be provided ith marking including manufacture rs name, insulation material, conductor sizes, no of pairs, voltage rati ngs, type of cable, etc, progressive markings to read mar king of the length of the cable at each meter interval and FRLS. All cables shall be suitable for continuous operation at 7 deg except for high temperature resistant Teflon insulated cables, which shall be uitable for continuous operation at 2 deg .