Abstract： AS 61869.13:2021 pdf download.lnstrument transformers Part 13: Stand-alone merging unit (SAMU)(IEC 61869-13:2021(ED.1.0) MOD). For a SAMU mounted inside an outdoor cabinet, the maximum temperature for very hot climates shall be increased to...

AS 61869.13:2021 pdf download.lnstrument transformers Part 13: Stand-alone merging unit (SAMU)(IEC 61869-13:2021(ED.1.0) MOD).

For a SAMU mounted inside an outdoor cabinet, the maximum temperature for very hot climates shall be increased to +55 °C. In the

most demanding applications, temperatures up to +70 °C may be specified.

5 Ratings

5.3 Rated insulation levels

5.3.2 Rated primary terminal Insulation level

Subclause 5.3.2 of IEC 61869-1:2007 is not applicable because a SAMU does not have high-voltage primary terminals. Insulation

requirements for analogue inputs connected to instrument transformer secondary circuits are given in 5.3.1301.

5.3.3 Other requirements for primary terminals insulation

Subclause 5.3.3 of IEC 61869-1:2007 is not applicable because a SAMU does not have high-voltage primary terminals.

5.3.4 Between-section insulation requirements

Subclause 5.3.4 of IEC 61869-1:2007 is not applicable because a SAMU does not have high-voltage primary terminals.

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