IEC 61140:1997

Defines classes of electrical and electronic equipment regarding protection against electric shock. Applies to equipment intended for connection to an external power supply with voltages up to 440 V r.m.s. between phases and 250 V r.m.s. between phases and earth, for use by the general public in homes, offices, workshops, schools, farms and the like, and for medical and dental purposes. Has the status of a technical report. Has the status of a basic safety publication in accordance with IEC Guide 104.

Contains details of protective provisions against electric shock for both direct and indirect contact. It has been prepared for electrical equipment with rated voltages not exceeding 1 000 V a.c. with a rated frequency not exceeding 1 000 Hz or 1 500 V d.c. Technical committees may, however, consider the possibility of using this report for equipment operating at higher voltages and higher frequencies. This report provides technical committees with guidelines for the practical implementation of the principles laid down in IEC 60536 for protection against electric shock when specifying requirements for protective provisions applicable to their equipment. Has the status of a type 2 technical report. Has the status of a basic safety publication in accordance with IEC Guide 104.

Applies to the protection of persons and animals against electric shock. It is intended to give fundamental principles and requirements which are common to electrical installations, systems and equipment or necessary for their co-ordination. Prepared for installations, systems and equipment without a voltage limit. NOTE - There are some clauses in this standard which refer to low-voltage and high-voltage systems, installations and equipment. For the purpose of this standard, low -voltage is any rated voltage up to and including 1 000 V a.c. or 1 500 V d.c. High voltage is any rated voltage exceeding 1 000 V a.c. or 1 500 V d.c. The requirements of this standard apply only if they are incorporated, or are referred to, in the relevant standards. It is not intended to be used as a stand-alone standard. Has the status of a basic safety publication in accordance with IEC Guide 104.