Nidec Digitax ST Series Installation Manual

Nidec Digitax ST Series Installation Manual Manual pdf 16 page image

16 Digitax ST Installation GuideIssue: 73 Mechanical InstallationSafety information3.1 Fire protectionThe drive enclosure is not classified as a fire enclosure. A separate fire enclosure mustbe provided.For installation in the USA, a NEMA 12 enclosure is suitable.For installation outside the USA, the following (based on IEC 62109-1, standard for PVinverters) is recommended.Enclosure can be metal and/or polymeric, polymer must meet requirements which canbe summarized for larger enclosures as using materials meeting at least UL 94 class5VB at the point of minimum thickness.Air filter assemblies to be at least class V-2.The location and size of the bottom shall cover the area shown in Figure 3-1. Any part ofthe side which is within the area traced out by the 5° angle is also considered to be partof the bottom of the fire enclosure.Follow the instructionsThe mechanical and electrical installation instructions must be adhered to. Anyquestions or doubt should be referred to the supplier of the equipment. It is theresponsibility of the owner or user to ensure that the installation of the drive and anyexternal option unit, and the way in which they are operated and maintained, comply withthe requirements of the Health and Safety at Work Act in the United Kingdom orapplicable legislation and regulations and codes of practice in the country in which theequipment is used.WARNINGStored chargeThe drive contains capacitors that remain charged to a potentially lethal voltage afterthe AC supply has been disconnected. If the drive has been energized, the AC supplymust be isolated at least ten minutes before work may continue.Normally, the capacitors are discharged by an internal resistor. Under certain, unusualfault conditions, it is possible that the capacitors may fail to discharge, or be preventedfrom being discharged by a voltage applied to the output terminals. If the drive has failedin a manner that causes the display to go blank immediately, it is possible the capacitorswill not be discharged. In this case, consult Nidec Industrial Automation or theirauthorized distributor.WARNINGCompetence of the installerThe drive must be installed by professional assemblers who are familiar with therequirements for safety and EMC. The assembler is responsible for ensuring that theend product or system complies with all the relevant laws in the country where it is to beused.WARNING