Nidec DFS Series Power Installation Manual

22 DFS1/DFS2 Power Installation GuideIssue Number: 2Figure 3-2 Transporting the cubicle3.2 Planning the installationThe following considerations must be made when planning the installation:3.2.1 AccessAccess must be restricted to authorized personnel only. Safety regulations which apply at the placeof use must be complied with.3.2.2 Environmental protectionThe DFS drives are offered with a choice of two Ingress Protection (IP) ratings:IP23: Protection against fingers or similar objects larger than 12.5 mm. Protection from water fallingas a spray at any angle up to 60° from the vertical.IP54: Protection against ingress of dust is not entirely prevented but must not enter in quantities thatmay interfere with operation of the equipment. Protection from water splashing against the enclosurefrom any direction.The drive enclosure protects the internal components from:• Moisture, including dripping water or spraying water and condensation. An anti-condensationheater may be required, which must be switched off when the drive is running.• Contamination with electrically conductive material• Contamination with any form of dust which may restrict the fan, or impair airflow over variouscomponents• Temperature beyond the specified operating and storage ranges• Corrosive gassesDuring installation it is recommended that the vents on the drive are covered to prevent debris(e.g. wire off-cuts) from entering the cubicle.3.2.3 CoolingThe heat produced by the internal components must be removed without its specified operatingtemperature being exceeded. Note that a sealed enclosure gives much reduced cooling comparedwith a ventilated one and may need to be larger and/or use internal air circulating fans.3.2.4 Fire protectionThe enclosure is classified as a Fire Enclosure within the meaning of IEC 62109-1. It surrounds theinternal parts and is intended to minimize the spread of fire or flaming materials from within.NOTE