Danfoss VLT AQUA Drive FC 202 Design Manual

Also see for VLT AQUA Drive FC 202: Service guide Installation guide Installation guide Operating guide Installation guide

Contents

3.2 Enclosure Protection RatingsThe VLT® drive series are available in various enclosure protection to accommodate the needs of the application. Enclosureprotection ratings are provided based on 2 international standards:• UL type validates that the enclosures meet NEMA (National Electrical Manufacturers Association) standards. Theconstruction and testing requirements for enclosures are provided in NEMA Standards Publication 250-2003 and UL50, Eleventh Edition.• IP (Ingress Protection) ratings outlined by IEC (International Electrotechnical Commission) in the rest of the world.Standard Danfoss VLT® drive series are available in various enclosure protections to meet the requirements of IP00 (Chassis),IP20 (Protected chassis) or IP21 (UL Type 1), or IP54 (UL Type 12). In this manual, UL Type is written as Type. For example,IP21/Type 1.UL type standardType 1 – Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contactwith the enclosed units and to provide a degree of protection against falling dirt.Type 12 – General-purpose enclosures are intended for use indoors to protect the enclosed units against the following:• Fibers• Lint• Dust and dirt• Light splashing• Seepage• Dripping and external condensation of noncorrosive liquidsThere can be no holes through the enclosure and no conduit knockouts or conduit openings, except when used with oil-resistant gaskets to mount oil-tight or dust-tight mechanisms. Doors are also provided with oil-resistant gaskets. In addition,enclosures for combination controllers have hinged doors, which swing horizontally and require a tool to open.IP StandardTable 3.2 provides a cross-reference between the 2 standards. Table 3.3 demonstrates how to read the IP number and thendefines the levels of protection. The drives meet the requirements of both.NEMA and UL IPChassis IP00Protected chassis IP20Type 1 IP21Type 12 IP54Table 3.2 NEMA and IP Number Cross-referenceApprovals and Certification... Design GuideMG22B102 Danfoss A/S © 05/2017 All rights reserved. 93 3