3.7.2 Outside Installation/NEMA 3R Kit forRittal Enclosures130BB518.10Illustration 3.20 Cutaway Side View of CabinetThis section is for the installation of NEMA 3R kits availablefor the frequency converter frames D3h, D4h and E2. Thesekits are designed and tested to be used with IP00/IP20/Chassis versions of these frames in Rittal TS8 NEMA 3R orNEMA 4 enclosures. The NEMA-3R enclosure is an outdoorenclosure that provides a degree of protection against rainand ice. The NEMA-4 enclosure is an outdoor enclosurethat provides a greater degree of protection againstweather and hosed water.The minimum enclosure depth is 500 mm (600 mm for E2frame) and the kit is designed for a 600 mm (800 mm forE2 frame) wide enclosure. Other enclosure widths arepossible, however more Rittal hardware is required. Consultthe installation requirements for the maximum depth andwidth.NOTEThe current rating of frequency converters in D3h and D4hframes are de-rated by 3%, when adding the NEMA 3R kit.Frequency converters in E2 frames require no derating.Frame Size Part Number Instruction NumberD3h 176F3633 177R0460D4h 176F3634 177R0461E2 176F1852 176R5922Table 3.30 NEMA-3R Kit Ordering Information3.7.3 Installation on PedestalThis section describes the installation of a pedestal unitavailable for the frequency converters frames D1h, D2h,D5h, and D6h. The pedestal allows these frequencyconverters to be floor mounted. The front of the pedestalhas openings for input air to the power components.The frequency converter gland plate must be installed toprovide adequate cooling air to the control components ofthe frequency converter and to maintain the IP21 (NEMA1) or IP54 (NEMA 12) enclosure ratings.175ZT976.10Illustration 3.21 Frequency Converter Mounted on a PedestalSelection VLT® AQUA Drive FC 202 Design Guide66 MG20Z102 - VLT® is a registered Danfoss trademark33
