DSH 524 Identification of Critical Components – Minimum description criteria

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DSH 524 0 Z& G  s  u0 k" d1 S

Identification of Critical Components – Minimum description criteria + n4 r( a5 p8 Z& W( h. L( ?

1.5.1 & l. f# \* n  G! W0 g

60950-1(ed.1) & 60950(ed.3)

Standard:
/ O; [; S2 x" ^3 ], WIEC 60950 (1999) 3rd ed., IEC
60950-1, 1st Ed. (2001)
( G  ^" T0 W- Q2 q; z& YSub clause:
" E8 B4 [0 y' d2 B3 }. j/ `1.5.1
Sheet No.
524
3 P4 N9 R8 A/ W) ZSubject:
Identification of Critical
Components – Minimum
2 Q  H1 M" t$ ^6 R* G- L6 k3 g7 cdescription criteria
Key words:
Components
Decision taken at the 40th
( A% B  m; p2 D2 P% v; W/ w: L+ Emeeting 2003
Question:
+ s% C) y# M' [7 h) ]General insulated wiring and printed wiring boards (pwbs) that are considered critical components
are very commonly used in ITE. A single unit may have multiple manufacturers and types of
each component within it. In an IECEE CB Report, is it acceptable to identify these critical
4 x* t  {0 ]( s# C* V; L, P) B) S4 Mcomponents by technical information (e.g., electrical ratings, flame class) and reference standard
/ L5 X. u( n5 {/ D# ]only, and not include manufacturer’s name and type number for each component?
Decision:
For general insulated wiring and printed wiring boards (pwbs) that are considered critical
components, it is acceptable to identify these components in the CB Report by technical
information (e.g., electrical ratings, flame class) and reference standard only, and not include
& E1 d4 [) B; mmanufacturer’s name and type number for each component.
For wiring and pwbs subjected to special requirements beyond the normal requirements applied to
* v. Y+ f& H) l+ E1 k6 aall these types of components, such as multi-layer wire investigated to Annex U, or coated pwbs
investigated per 2.10.6, the specific manufacturer and type of the component should be controlled
in addition to the technical information.