EN 60618:1997/A2:1997

Overview

EN 60618:1997/A2:1997 is the European adoption (amendment A2) of IEC 60618 dealing with inductive voltage dividers (IVDs). This amendment (1997) updates safety, marking and documentation requirements for IVDs and aligns voltage test and safety clauses with IEC 61010-1. It was prepared by IEC Technical Committee 85 (Measuring equipment for electromagnetic quantities) and is reflected in national standards (e.g., SIST EN 60618:2000/A2:2000).

Key topics and requirements

• Scope: Applies to inductive voltage dividers used in measurement and calibration applications (document is an amendment to IEC 60618:1978).
• Safety and voltage tests: Voltage tests and other safety requirements are referred to and governed by IEC 61010-1: Safety requirements for electrical equipment for measurement, control and laboratory use – Part 1: General requirements.
• Manufacturer information: The amendment requires additional manufacturer documentation items:
  • Overvoltage category (e.g., CAT II)
  • Pollution degree (e.g., Pollution degree 1)
• Marking and symbols:
  • Use symbols according to IEC 61010-1 for overvoltage category and pollution degree on the instrument.
  • Example marking change: replace previous test-voltage “star” with the overvoltage category symbol plus pollution degree.
• Documentation:
  • The common-mode voltage must be provided in separate documentation when it differs from tabulated values.
  • New items dd) and ee) were added to documentation and marking clauses to capture overvoltage category and pollution degree.
• Standards development: Amendment based on TC85 voting records and FDIS process, showing consensus updates to safety alignment.

Applications and users

• Typical users and beneficiaries:
  • Manufacturers of inductive voltage dividers - for compliance, marking and technical documentation.
  • Calibration and metrology laboratories - for correct use, safety classification and traceable calibration.
  • Test and measurement engineers - selecting dividers for instrumentation, power electronics testing and high-voltage measurement setups.
  • Compliance and safety officers - ensuring equipment meets IEC/EN safety and overvoltage categorization rules.
• Common practical uses:
  • Precision voltage division for calibration of voltmeters and ADC front-ends.
  • Reference dividers in high-voltage test labs and power-electronics development.
  • Metering and verification of stabilized power supplies, converters and rectifiers.

Related standards

• IEC 60618 (base standard for inductive voltage dividers)
• IEC 61010-1 (safety and overvoltage/pollution degree requirements referenced in this amendment)

Keywords: inductive voltage dividers, EN 60618:1997/A2:1997, IEC 60618, IEC 61010-1, overvoltage category, pollution degree, voltage divider safety, calibration, metrology.