Operating instructions

Issue Date: 2003-09-25 Page 6 of 25 Report Reference # E203413-A17-CB-1
IEC 60950
SubClause Difference + Test Result - Remark Verdict
UL International Demko A/S
Group - Differences to IEC60950, Third Edition (1999)
2.7.1 Replace the text of this Sub-Clause by:
Basic requirements
To protect against excessive current, short circuits
and earth faults in PRIMARY CIRCUITS, protective
devices shall be included either as integral parts of
the equipment or as parts of the building
installation, subject to the following, a), b), and c)
Pass
2.7.1.a a).Except as detailed in b) and c), protective
devices necessary to comply with the requirements
of subclause 5.3 shall be Included as parts of the
equipment
N/A
2.7.1.b b).For components in series with the mains input to
the equipment such as the supply cord, appliance
coupler, r.f.i. filter and switch, short circuit and
earth fault protection may be provided by protective
devices in the building installation.
Pass
2.7.1.c c).It is permitted for PLUGGABLE EQUIPMENT
TYPE B or PERMANENTLY CONNECTED
EQUIPMENT, to rely on dedicated overcurrent and
short circuit protection in the building installation,
provided that the means of protection, e.g. fuses or
circuit breakers, is fully specified in the installation
instruction.
N/A
2.7.1.c If reliance is placed on protection in the building
installation. the installation instructions shall so
state, except that for PLUGGABLE EQUIPMENT
TYPE A the building Installation shall be regarded
as providing protection in accordance with the
rating of the wall socket outlet.
N/A
2.7.2 This subclause has been declared 'void' N/A
3.2.3 Delete NOTE 1, and in table 3A delete the conduit
sizes in parentheses.
N/A
3.2.5 Replace as follows:
"60245 IEC 53" by "H05 RR-F"
"60227 IEC 52" by "H03 VV-F or H03 VVH2-F"
"60227 IEC 53" by "H05 VV-F or H05 VVH2-F"
N/A