SIST EN 60564:1999/A2:1999

D.C. bridges for measuring resistance

EN following parallel vote

Gleichstrom-Widerstandsmeßbrücken

Ponts à courant continu pour mesure de résistance

Enosmerni mostički za meritve upornosti – Dopolnilo A2 (IEC 60564:1977/A2:1997)

General Information

• Status: Published
• Publication Date: 30-Jun-1999
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jul-1999
• Due Date: 01-Jul-1999
• Completion Date: 01-Jul-1999
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 73/23/EEC - Electrical equipment designed for use within certain voltage limits
• Ref Project: EN 60564:1993/A2:1997 - D.C. bridges for measuring resistance

Relations

• Amends: SIST EN 60564:1999 - D.C. bridges for measuring resistance
• Effective Date: 21-Sep-2010

Overview

SIST EN 60564:1999/A2:1999 is an important European standard developed by the CLC (European Committee for Electrotechnical Standardization) that specifies requirements for D.C. bridges used in measuring electrical resistance. This standard serves as an amendment (Amendment 2 from 1997) to the original IEC 60564 standard, ensuring updated safety and performance criteria in line with evolving electrical measurement technologies. It aligns closely with international IEC guidelines, improving the accuracy and safety of direct current (D.C.) resistance measurement bridges.

Key Topics

• Scope and Purpose
  The standard covers the specifications for D.C. bridge instruments designed specifically to measure electrical resistance with high precision, essential in both laboratory and industrial electrical testing environments.

• Safety Requirements
  A key update in this amendment references IEC 61010-1:1990, setting forth rigorous voltage testing and insulation resistance criteria to enhance operational safety. The insulation resistance minimum is set at 20 MΩ. Voltage tests and safety classifications focus on protecting operators and equipment from electrical hazards during resistance measurement.

• Marking and Information
  The standard mandates detailed marking requirements on the measuring bridges, including:

  • Common mode voltage
  • Overvoltage category (e.g., CAT II)
  • Pollution degree (e.g., Pollution Degree 1)
    These markings improve the clarity of operational limits and environmental suitability for the devices. Symbols must align with those defined in IEC 61010-1 for consistency across equipment.

• Specification Updates
  The amendment revises the replacement of voltage test symbols with clear overvoltage category symbols and pollution degree ratings in product documentation and labeling, facilitating easier user comprehension and regulatory compliance.

Applications

SIST EN 60564:1999/A2:1999 is widely applicable in the following areas:

• Electrical Testing Laboratories
  For precise resistance measurements in research and testing of electrical components and materials.

• Industrial Quality Control
  Ensuring electrical resistivity parameters meet quality thresholds during manufacturing of electronic and electrical devices.

• Calibration and Maintenance
  Used by technicians to verify and calibrate resistance measuring instruments in workshops and field operations.

• Educational and Training Institutions
  Providing standardized methods and equipment specifications for students and trainees in electrical engineering and instrumentation fields.

Related Standards

For comprehensive compliance and further technical guidance, EN 60564 interacts with and references the following standards:

• IEC 61010-1:1990 – Safety requirements for electrical equipment for measurement, control, and laboratory use. It details general electrical safety principles crucial for instruments covered under EN 60564.

• IEC 60564 (original) – The base standard for DC resistance measurement bridges, providing foundational technical and performance criteria.

• Additional IEC Symbol Standards – Ensuring consistent use of electrical and safety symbols across measurement equipment.

Summary

SIST EN 60564:1999/A2:1999 sets forth the technical and safety requirements for D.C. bridges measuring electrical resistance, critical for accuracy and user safety during electrical testing. By adhering to updated marking, insulation, and voltage test requirements aligned with IEC 61010-1, manufacturers and users benefit from enhanced clarity and protection. This standard is essential for professionals involved in electrical measurement, calibration, and instrumentation development, supporting reliable and safe resistance measurements in diverse sectors.

Keywords: D.C. bridges, resistance measurement, electrical safety standard, insulation resistance, overvoltage category, IEC 61010-1, electrical testing equipment, measurement instrumentation, EN 60564 amendment, pollution degree, direct current measurement.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-1999
(QRVPHUQLPRVWLþNL]DPHULWYHXSRUQRVWL±'RSROQLOR$,(&$
D.C. bridges for measuring resistance
Gleichstrom-Widerstandsmeßbrücken
Ponts à courant continu pour mesure de résistance
Ta slovenski standard je istoveten z: EN 60564:1993/A2:1997
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE
IEC
INTERNATIONAL
STANDARD
AMENDEMENT 2
AMENDMENT 2
1997-10
Amendement 2
Ponts à courant continu pour mesure de résistance
Amendment 2
DC bridges for measuring resistance
 IEC 1997 Droits de reproduction réservés  Copyright - all rights reserved
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Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
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Commission Electrotechnique Internationale
PRICE CODE C
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60564 Amend. 2 © IEC:1997 – 3 –
FOREWORD
This amendment has been prepared by IEC technical committee 85: Measuring equipment for
electromagnetic quantities.
The text of this amendment is based on the following documents:
FDIS Report on voting
85/170/FDIS 85/181/RVD
Full information on the voting for the approval of this amendment can be found in the report on
voting indicated in the above table.
__________
Page 21
8.1 Voltage tests and other safety requirements
Replace the existi
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