Appendix A: Specifications
A–10 WFM 601A, WFM 601E & WFM 601M User Manual
Table A–6: Safety standards
Characteristic Standard
U.S. Nationally Recognized Testing
Laboratory Listing ANSI/ISA S82.01 - Safety Standard for Electrical and Electronic Test, Measuring,
Controlling, and Related Equipment, 1994.
Canadian Certification CAN/CSA C22.2 No. 1010.1 - Safety Requirements for Electrical Equipment for
Measurement, Control, and Laboratory Use.
European Union Compliance Low Voltage Directive 73/23/EEC, Amended by 93/68/EEC
IEC1010-1 - Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use.
Additional Compliance UL3111-1 - Standard for Electrical Measuring and Test Equipment
IEC1010-1 - Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use.
Table A–7: Safety certification compliance
Characteristic Standard
Temperature (operating) 0° to +40° C
Altitude (operating) 2000 meters
Equipment Type Test and Measuring
Equipment Class Class I: Grounded product (as defined in IEC 1010-1, Annex H)
Overvoltage Category Overvoltage Category II (as defined in IEC 1010-1, Annex J).
Note: Rated for indoor use only.
Category Examples of Products in this Category:
CAT III Distribution-level mains, fixed installation
CAT II Local-level mains, appliances, portable equipment
CAT I Signal levels in special equipment or parts of equipment, telecommunications,
electronics
Pollution Degree Pollution Degree 2: Do not operate in environments where conductive pollutants may be
present.