DSH 700 Push force for connectors
http://decisions.iecee.org/icons/ecblank.gif DSH 700
Push force for connectors
4.3.5
60950-1(ed.2)
Standard- No. Year
IEC 60950-1:2005 DSH
0700
2008
Category: OFF
Subclause:
4.3.5
Developed by: ETF 2
Subject:
Push force for connectors
Key words:
-Travel adapter;
- connector misconnection
Decision approved at the
46th CTL Plenary Meeting
in 2009
Question:
A travel adapter consists of two separable parts:
·AC/DC unit (down transformation of voltage, safety separation provided)
·DC/DC unit with output cable (supply stabilization and voltage adjustment, no safety separation
provided)
The unit can be used at AC mains (both units connected together) or DC (units separated, only DC/DC
used). The AC/DC unit has a (Class II) IEC 60320-1 type appliance inlet; the DC/DC unit uses a
special 2-pins input connector.
With a small force applied (less than 30 N) an IEC 60320-1 coupler can be inserted into the input
connector of the DC/DC unit and make contact.
a. Is such design acceptable if a warning label is provided on the DC/DC unit and additional remarks
are provided in the user manual that state that the connector of the AC power cord shall not be
pushed into the input connector of the DC/DC unit?
b. How much force must be applied during the testing of the input connector (DC) and appliance
coupler (AC)?
Decision:
A test force of 60 N (as specified in IEC 60320-1, no safety factor considered) shall be applied when
testing possible misconnection of IEC 60320 and similar connectors.
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