因为好像目前GB还是按照旧的60950 Differences between "IEC 60950-1:2001" and "IEC 60950-1:2005"
? : Level of importance (0=not, 3=very) Page 3 of 20 Document date: 4-Apr-2006
Subclause Change ? Comment
Foreword Added 0 Additional parts "22" and "23" mentioned that are planned but not published
yet (Mar-2006).
1.1.1 Clarified 2 IEC 60950-1 applies as well to components and subassemblies intended for
incorporation in ITE.
1.1.3 Modified 1 "Support systems" were deleted from list of excluded examples.
1.2.2.3 New 1 RATED RESTING TIME replaces subclauses 1.2.2.3~5 (CONTINUOUS OPERATION,
SHORT-TIME OPERATION and INTERMITTENT OPERATION).
1.2.5.3 New 0 PLUGGABLE EQUIPMENT as definition covering both pluggable equipment types
A and B.
1.2.8.3 New 0 MAINS SUPPLY as definition covering both AC and DC mains supply.
1.2.9.7 New 0 RMS WORKING VOLTAGE introduced as defined term.
1.2.10.4 New 0 SOLID INSULATION introduced as defined term.
1.2.13.15 New 0 CHEESECLOTH introduced as defined term.
1.2.13.16 New 0 WRAPPING TISSUE introduced as defined term.
1.2.13.17 New 0 PROTECTIVE CURRENT RATING introduced as defined term which is similar to
previous term "current rating of the circuit under test" of subclause 2.6.3.4.
1.3.3 Clarified 1 If the test voltage is not specified in a test item the rated voltage or any value
in the rated voltage range shall be used for test.
1.4.8 Modified 1 "Note 2" added for additional requirements of USA and Canada for
overvoltage protection of TNV circuits.
1.4.14 Clarifi ed 1 Adding to third paragraph: "The failure of functional insulation is only
simulated when required by 5.3.4 c)" (risk of fire, risk of electric shock).
1.5.1 Modified 0 Adding "Note 3" (Switzerland does not allow mercury switches) and deleting
second paragraph and old "Note 3".
1.5.6 Modified 0 Complete change of subclause by adding information from IEC 60384-14.
However, application principle of X- and Y-capacitors not changed.
1.5.7 Complete change and concept for bridging resistors. Detailed requirements
for:
·Resistors bridging functional/basic/supplementary insulation (1.5.7.1)
·Resistors double/reinforced functional insulation (1.5.7.2)
·Resistors double/reinforced functional insulation – Special
requirements when connected to antenna/coaxial cable (1.5.7.3)
1.5.7.1 Only subclauses 2.10.3 and 2.10.4 (distances) apply to such resistors.
1.5.7.2 Very different concept:
·Single resistor is acceptable if it passes "Resistor test"
·Group of resistors must either pass "Resistor test" or pass subclauses
2.10.3 and 2.10.4 (distances) with each resistor short-circuited in turn
"Resistor test":
Damp heat test of IEC 60068-2-78 plus impulse test and resistance
measurement.
1.5.7.3
Modified 2
Same as 1.5.7.2 above but with different impulse generator for circuits with
coaxial cable connection.
1.5.9 Requirements for varistors (VDR) specified.
1.5.9.1 Secondary circuit surge suppressors: any suitable component allowed
Primary circuit surge suppressors: only VDR allowed.
1.5.9.2 An interrupting means must be provided for protection of the VDR in series.
1.5.9.3 It is allowed to bridge functional insulation by VDR, no additional
requirements.
1.5.9.4 It is allowed to bridge basic insulation by VDR with additional requirements:
·one side of the VDR must be earthed
·only possible for pluggable equipment type B or permanently
connected equipment or equipment with permanently connected
earthing conductor
·more restrictions for countries FI, NO, SE
1.5.9.5
New 2
It is not allowed to bridge supplementary/double/reinforced insulation by
VDR.
1.6.1 Modified 0 "Note" for Australian national difference was deleted.
1.7.1 Clarified 0 Clarification for the use of the Class II symbol.
1.7.2 Modified 0 Re-arranging of content of subclauses 1.7.2, 1.7.10 and 1.7.16. 太感谢了！
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