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What is the Degree of Protection (IP) of an external protection enclosure for a TRIHAL Cast Resin dry type transformers? 

For indoors, the standard protection enclosure of the TRIHAL cast resin dry type transformer is IP 31. For non-standard and indoors, an IP 23 enclosure for a polluted atmosphere can be installed. For outdoors and customised transformers, an IP 35 minimum protection enclosure can be ordered.
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