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IEC Testing Equipment
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IEC60320-1 / UL60320-1 Appliance couplers for household and similar general purposes-Temperature rise gauges
Temperature rise
Contacts and other current‐carrying parts shall be so designed as to prevent excessive
temperature rise due to the passage of current.
Compliance is checked, for connectors/appliance outlets, by the following test.
Rewirable connectors are fitted with polyvinyl chloride insulated cords having a length of 1 m
and a cross-sectional area according to Table 8.
Appliance outlets are fitted with insulated conductors according to Table 8.
The terminal screws, if any, are tightened with two‐thirds of the torque specified in the appropriate column of Table 12.
The connector is inserted into an appliance inlet having brass pins with the minimum
dimensions specified in the relevant standard sheet, a tolerance of +0,02 mm being allowed,
the distance between pin centres having the value specified in the standard sheet.
Appliance outlets are connected to a plug connector.
For non-standardized appliance couplers, the counterpart specified by the manufacturer is
used.
An alternating current of 1,25 times the rated current is passed through the current-carrying
contacts for 1 h.
For connectors/appliance outlets with earthing contact, the current is then passed through one
current‐carrying contact and the earthing contact for 1 h.
The temperature rise of terminals and contacts shall not exceed 45 K.
After this test, the test samples shall withstand the test of Clause 16.