GOST R IEC 60044-7-2010 PDF

Full title and description

GOST R IEC 60044-7-2010 — "Instrument transformers. Part 7. Electronic voltage transformers". This is the Russian adoption (GOST R) of IEC 60044-7 and specifies requirements, performance and test methods for electronic voltage transformers (EVTs) with analogue outputs intended for measurement, protection, automation and control equipment.

Abstract

The standard sets definitions, ratings and principal requirements for single-phase electronic voltage transformers (EVTs) with analogue outputs covering electrical, thermal, insulation and accuracy performance, applicable tests (routine and type), marking and documentation. It is intended to ensure that EVTs provide reliable measurement and protection signals across normal operating conditions and during transient events.

General information

• Status: In force / active (GOST R adoption of IEC 60044-7:1999).
• Publication date: Approved 23 December 2010; introduced (effective) 1 July 2012.
• Publisher: Federal Agency on Technical Regulation and Metrology (Rosstandart) — national publication of the IEC base standard in Russian/English.
• ICS / categories: 17.220.20 (Instrument transformers).
• Edition / version: GOST R IEC 60044-7-2010 (based on IEC 60044-7:1999).
• Number of pages: Approximately 57–58 pages in the Russian publication (varies by publisher/format).

Scope

This standard applies to electronic voltage transformers (EVTs) with analogue output used for electrical measuring instruments and electrical protective devices at supply frequencies from 15 Hz to 100 Hz. It covers EVTs with nominal primary voltages from 0.1/√3 kV to 750/√3 kV inclusive, addressing their intended use for metering, protection, automation, signalling and control. Three‑phase arrangements are not treated as primary objects of the standard, although some requirements may apply.

Key topics and requirements

• Definitions, terms and symbols for electronic voltage transformers.
• Rated values and designation (nominal voltages, frequency range, accuracy classes and output characteristics).
• Accuracy requirements (steady-state error, phase displacement) and specified accuracy classes for measurement and protection applications.
• Insulation, dielectric and impulse withstand tests, and requirements for primary/secondary insulation and earthing.
• Performance under normal operating conditions and specified transient/disturbance conditions (short‑circuit, switching transients, DC offset effects).
• Routine and type test procedures, sampling criteria and limits for test results.
• Environmental, thermal and mechanical requirements (temperature, humidity, vibration) and EMC considerations for analogue outputs.
• Marking, documentation, installation and maintenance guidance for safe, interoperable use with metering and protection equipment.

Typical use and users

EVTs specified by this standard are used by power utilities, substation designers, protection and metering engineers, manufacturers of instrument transformers and EVTs, testing laboratories and organisations responsible for procurement and verification of measurement and protection devices. Typical applications include metering, protection relay inputs, automation systems and signal conditioning in high- and medium-voltage installations.

Related standards

Closely related documents include other parts of the IEC/60044 series (instrument transformers), the IEC/EN series that superseded parts of IEC 60044 (notably IEC 61869 series, including IEC 61869-11 for electronic voltage transformers), IEC 60038 (standard voltages) and IEC 60186 (capacitive voltage transformers — referenced for certain test/transition considerations). National GOST R equivalents of other IEC 60044 parts exist for current and voltage transformers.

Keywords

Electronic voltage transformer, EVT, instrument transformer, analogue output, voltage transducer, metering, protection, IEC 60044-7, GOST R, accuracy class, transient response, dielectric test, insulation.

FAQ

Q: What is this standard?

A: GOST R IEC 60044-7-2010 is the Russian adoption of IEC 60044-7 and specifies requirements and test methods for electronic voltage transformers (EVTs) with analogue outputs used for measurement and protection applications.

Q: What does it cover?

A: It covers definitions, rated values, accuracy and performance requirements, insulation and dielectric tests, transient performance, environmental/mechanical requirements, routine and type tests, marking and documentation for EVTs operating from 15 Hz to 100 Hz and nominal voltages from about 0.1/√3 kV up to 750/√3 kV.

Q: Who typically uses it?

A: Power utilities, protection and metering engineers, manufacturers of EVTs and instrument transformers, test laboratories, procurement and standards teams involved in substation equipment specification and conformity assessment.

Q: Is it current or superseded?

A: The GOST R adoption (2010) implements IEC 60044-7:1999. At the international level IEC 60044-7 has been partially replaced by the IEC 61869 series (IEC 61869-11 covers some EVT topics), so users should check whether newer national or international versions or the IEC 61869 series are required for new designs or procurement.

Q: Is it part of a series?

A: Yes — it is Part 7 of the IEC 60044 instrument transformer series and is associated with other parts addressing current transformers, capacitive voltage transformers and related instrument transformer topics; the broader IEC 61869 series now consolidates many instrument transformer requirements.

Q: What are the key keywords?

A: Electronic voltage transformer, EVT, instrument transformer, analogue output, accuracy class, transient response, dielectric test, metering, protection.