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BS EN 60521:1995

BS EN 60521:1995

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Class 0.5, 1 and 2 alternating-current watthour meters

Available format(s)

Hardcopy , PDF

Superseded date

07-04-2003

Language(s)

English

Published date

09-15-1995

Publisher

British Standards Institution

Explanatory foreword in relation to Class 0.5 meters
Clause
1. Scope
2. Units
3. Definitions
4. Classification
5. Mechanical requirements
6. Electrical requirements
7. Marking of Meters
8. Accuracy
9. Starting and running with no-load
10. Adjustment
APPENDIX A - Graphical symbols for watthour meters
Annex ZA (normative) Other international publications
                     quoted in this standard with the
                     relevant publications
Annex ZB (normative) Special national conditions
TABLES
    I. Clearances and creepage distances
   II. Standard basic currents
  III. Standard reference voltages
   IV. Power loss
    V. Apparent power loss
   VI. Heating
  VII. A.C. Voltage tests
 VIII. Voltage marking
   IX. Voltage and current balance
    X. Reference conditions
   XI. Percentage error limits (single-phase meters and
       polyphase meters balanced loads)
  XII. Percentage error limits (polyphase meters carrying
       a single-phase load, but with balanced polyphase
       voltages applied to voltage circuits)
 XIII. Interpretation of test results
  XIV. Temperature coefficient
   XV. Influence quantities
  XVI. Variations due to short-time overcurrents
 XVII. Variations due to self-heating
XVIII. Starting currents
  XIX. Minimum range of adjustment

Gives type tests for measurement of electrical energy in the frequency range 45 to 65 Hz having a voltage across connection terminals not exceeding 600 V.

Committee
PEL/13
DevelopmentNote
Supersedes BS 5685-1(1979) Inactive for new design. (03/2004)
DocumentType
Standard
Pages
30
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
NF EN 60521 : 1995 Identical
SN EN 60521 : 1995 Identical
NBN EN 60521 : 1995 Identical
DIN EN 60521 : 1995 Identical
I.S. EN 60521:1995 Identical
EN 60521:1995/corrigendum Dec. 1997 Identical
IEC 60521:1988 Identical

BS EN 60514:1995 Acceptance inspection of class 2 alternating-current watthour meters
BS 7856:1996 Code of practice for design of alternating current, watthour meters for active energy (classes 1 and 2)

BS 7003:1988 Specification for spring-operated impact-test apparatus and its calibration
BS EN 60514:1995 Acceptance inspection of class 2 alternating-current watthour meters
BS 6458-2.1:1984 Fire hazard testing for electrotechnical products. Test methods Glow-wire test
BS EN 60060-2:1995 High-voltage test techniques Measuring systems
BS 5458:1977 Specification for safety requirements for indicating and recording electrical measuring instruments and their accessories
BS 7697:1993 Nominal voltages for low voltage public electricity supply systems

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PDF - English
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