DSH 333 Separation of Internal Circuits

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DSH 333

Separation of Internal Circuits 2 {2 `3 g$ r8 _3 W( e- ^

6.6.1 / C, R3 j* |- v

61010-1(ed.1);am1;am2

Standard:
IEC 61010-1:1990 +A1:1992 + A2
/ N& S0 Q) m: [:1995
Sub clause:
3 g0 s5 B8 t, `; c9 o6.6.1
Sheet n. 333
8 W9 Z: r2 w$ X8 b9 h' q! RPage 1(1)
Subject:
$ I7 q* R, }( C2 }) R6 _( d+ qSeparation of Internal circuits
Key words:
0 c9 m5 ~% ^0 m) a6 _1 E4 z- Isolation system
: G) H/ v- @( }! P. V6 v7 w- Materials Declaration
! Q3 W3 F. S; dDecision n. 23 taken at
* V2 E7 l( K: h0 j4 S; b37th meeting/2000
6 O( K4 i& W/ z( M! F4 \Question:
  q% ]! ?* |  m+ d0 {- B; ?1 p1 `- RWhat should be the criteria for accepting a manufacturer’s declaration for
- Y2 k% h* w" `' sisolation systems and materials?
- J6 \3 `% o5 @3 Q1 b1 KThis question is from CTL.
- X$ A4 b' H7 Y& T% ODecision:
It was agreed that although manufacturer 's declaration may well be taken into consideration,
9 Z5 w  u5 d- e) U- d; t4 r9 S4 }$ Bhowever testing must be performed to ensure that requirements of IEC61010-1 is met.
Explanatory Notes:
In IEC61010-1, there is no requirement to simulate the ageing process of critical components
such as the mains / isolating transformers.
It should be noted that after each single fault condition test, where necessary, the required
high voltage test must also be applied to ensure that at least basic insulation exists.
Note that under compliance criteria there is no reference to 'Declaration by manufacturer'.


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