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BS EN IEC 60034-30-3:2024

BS EN IEC 60034-30-3:2024

$142.49

Rotating electrical machines – Efficiency classes of high voltage AC motors (IE-code)

Published By Publication Date Number of Pages
BSI 2024 28
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IEC 60034-30-3:2024 specifies efficiency classes for fixed-speed three-phase high-voltage cage induction motors in accordance with IEC 60034-1 that – have a rated voltage exceeding 1 000 V, but not exceeding 11 kV; – have a rated power from 200 kW to 2 000 kW; This document provides the global harmonization of energy-efficiency classes of three-phase cage induction motors with rated voltage above 1 000 V that are rated for direct online starting and fixed-speed operation at a 50 Hz or 60 Hz supply with sinusoidal voltage.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
6 English
CONTENTS
7 FOREWORD
9 INTRODUCTION
10 1 Scope
11 Figure 1 – Envelope of the load torque during starting:Load torque during starting in % of rated torque over speed in % of rated speed
12 Tables
Table 1 – Maximum external moment of inertia
13 2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
14 3.2 Symbols
4 Efficiency classification
4.1 Determination
4.1.1 General
4.1.2 Auxiliary devices
15 4.2 Efficiency rating – General procedure
Table 2 – Reference efficiency values ηr for 2p = 2, fN = 50 Hz
16 Table 3 – Reference efficiency values ηr for 2p = 4, fN = 50 Hz
17 Table 4 – Reference efficiency values ηr for 2p = 6, fN = 50 Hz
18 Table 5 – Reference efficiency values ηr for 2p = 2, fN = 60 Hz
19 Table 6 – Reference efficiency values ηr for 2p = 4, fN = 60 Hz
20 Table 7 – Reference efficiency values ηr for 2p = 6, fN = 60 Hz
21 Table 8 – Technology factor cu for rated voltage UN
Table 9 – Technology factor cc for method of cooling (IC class)
Table 10 – Technology factor cs for starting conditions for motorswithin the scope of this document
22 5 Required documentation
23 Annex A (informative)Standardized nameplate efficiency values
Table A.1 – Standardized nameplate efficiency levels
24 Annex B (informative)Proposal for technology factor for starting conditions for high voltage cage induction motors outside the scope of this document
Table B.1 – Technology factor cs for starting conditions for high voltage cage induction motors outside the scope of this document
25 Annex C (informative)Example for determining the nominal efficiency
26 Bibliography

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BS EN IEC 60034-30-3:2024
$142.49