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LC1F3304 Datasheet(PDF) 11 Page - List of Unclassifed Manufacturers |
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LC1F3304 Datasheet(HTML) 11 Page - List of Unclassifed Manufacturers |
11 / 252 page TeSys™ IEC-Style Contactors and Starters Selection Guide Technical Information: Protective Treatment / Climatic Environment 11 01/04 © 2001-2004 Schneider Electric All Rights Reserved • For pilot devices, the use of “TC” treatment can be extended to outdoor use provided the enclosure is made of light alloys, zinc alloys, or plastic material. In this case, it is essential to ensure that the degree of protection against penetration of liquids and solid objects is suitable for the applications involved. “TH” Treatment for Hot and Humid Environments This treatment is for hot and humid atmospheres where installations are subject to condensation, dripping water, and the risk of fungi. Plastic insulating components are also resistant to attacks from insects such as termites and cockroaches. These properties have led to this treatment being described as “Tropical Finish,” but this does not mean that all equipment installed in tropical and equatorial regions must have undergone “TH” treatment. On the other hand, certain operating conditions in temperate climates may well require the use of “TH”-treated equipment (see the Limits for Use of “TC” Treatment section on page 10). The following are special characteristics of “TH” treatment: • All insulating components are made of materials which are either resistant to fungi or treated with a fungicide, having increased resistance to creepage (Standards IEC 112, NF C 26-220, DIN 5348). • Metal enclosures receive a top-coat of baked, fungicidal paint, applied over a rust inhibiting undercoat. Components with “TH” treatment may be subject to a surcharge (a large number of Telemecanique products are “TH” treated as standard and are, therefore, not subject to a price surcharge). Please consult our local representatives or agents. Special Precautions for Electronic Equipment Electronic products always meet the requirements of “TC” treatment. A number of them are “TH”-treated as standard. Some electronic products (for example, programmable controllers, flush-mountable controllers CCX, and flush-mountable operator terminals XBT) necessitate the use of an enclosure providing a degree of protection to at least IP 54 (as defined by the standards IEC 60664 and NF C 20 040) for use in industrial applications or in environmental conditions requiring a “TH” treatment. These electronic products, including flush-mountable products, must have a degree of protection to at least IP 20 (either provided by the enclosure itself or following installation) for restricted access locations where the degree of pollution does not exceed 2 (a test booth not containing machinery or other dust producing activities, for example). Protective Treatment Selection Guide Location Environmental Conditions Duty Cycle Internal Heating of Enclosure when Not in Use Type of Climate Protective Treatment of Components Enclosure Indoors No dripping water or condensation Unimportant Unnecessary Unimportant “TC” “TC” Presence of dripping water or condensation Frequent switching off for periods of more than 1 day No Temperate “TC” “TH” Equatorial “TH” “TH” Yes Unimportant “TC” “TH” Continuous Unnecessary Unimportant “TC” “TH” Outdoors (sheltered) No dripping water or dew Unimportant Unnecessary Temperate “TC” “TC” Equatorial “TH” “TH” Exposed outdoors, or near the sea Frequent and regular presence of dripping water or dew Frequent switching off for periods of more than 1 day No Temperate “TC” “TH” Equatorial “TH” “TH” Yes Unimportant “TC” “TH” Continuous Unnecessary Unimportant “TC” “TH” These treatments cover, in particular, the applications defined by methods I and II of guide UTE C 63-100. |
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