I.S. EN 60521:1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
CLASS 0.5, 1 AND 2 ALTERNATING-CURRENT WATTHOUR METERS
Hardcopy , PDF
21-05-2003
English
01-01-1995
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Important note : Users cannot be edited or removed once added to your Multi user PDF.
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
Applies only to newly manufactured induction type watt-hour meters of accuracy classes 0.5, 1 and 2, for the measurement of alternating current electrical active energy of a frequency in the range 45 Hz to 65 Hz and to their type tests only.
| DevelopmentNote |
Supersedes IEC 60043, IEC 60170 and IEC 60280. (02/2002)
|
| DocumentType |
Standard
|
| Pages |
92
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| NBN EN 60521 : 1995 | Identical |
| IEC 60521:1988 | Identical |
| DIN EN 60521 : 1995 | Identical |
| NF EN 60521 : 1995 | Identical |
| BS EN 60521:1995 | Identical |
| EN 60521:1995/corrigendum Dec. 1997 | Identical |
| SN EN 60521 : 1995 | Identical |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.