ДСТУ EN 60076-1:2016 Трансформаторы силовые. Часть 1. Общие сведения (EN 60076-1:2011, IDT)

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EN 60076-1:2011

Power transformers — Part 1: General

прийнято як національний стандарт
методом " підтвердження" за позначенням

ДСТУ EN 60076-1:2016
(EN 60076-1:2011, IDТ)

Трансформатори силові. Частина 1. Загальні відомості

З наданням чинності від 2016-09-01

CONTENTS

FOREWORD

1 Scope

2 Normative references

3 Terms and definitions

3.1 General

3.2 Terminals and neutral point

3.3 Windings

3.4 Rating

3.5 Tappings

3.6 Losses and no-load current

3.7 Short-circuit impedance and voltage drop

3.8 Temperature rise

3.9 Insulation

3.10 Connections

3.11 Test classification

3.12 Meteorological data with respect to cooling

3.13 Other definitions

4 Service conditions

4.1 General

4.2 Normal service conditions

5 Rating and general requirements

5.1 Rated power

5.1.1 General

5.1.2 Preferred values of rated power

5.1.3 Minimum power under alternative cooling modes

5.1.4 Loading beyond rated power

5.2 Cooling mode

5.3 Load rejection on transformers directly connected to a generator

5.4 Rated voltage and rated frequency

5.4.1 Rated voltage

5.4.2 Rated frequency

5.4.3 Operation at higher than rated voltage and/or at other than rated frequency

5.5 Provision for unusual service conditions

5.6 Highest voltage for equipment Um and dielectric tests levels

5.7 Additional information required for enquiry

5.7.1 Transformer classification

5.7.2 Winding connection and number of phases

5.7.3 Sound level

5.7.4 Transport

5.8 Components and materials

6 Requirements for transformers having a tapped winding

6.1 General – Notation of tapping range

6.2 Tapping voltage – tapping current. Standard categories of tapping voltage variation. Maximum voltage tapping

6.3 Tapping power. Full-power tappings – reduced-power tappings

6.4 Specification of tappings in enquiry and order

6.4.1 General31

6.4.2 Constructional specification

6.4.3 Functional specification

6.5 Specification of short-circuit impedance

6.6 Load loss and temperature rise

7 Connection phase displacement symbols

7.1 Connection and phase displacement symbols for three-phase transformers and for single phase transformers connected in a three phase bank

7.1.1 Connection symbol

7.1.2 Phase displacement in clock number notation

7.1.3 Windings not intended to be loaded

7.1.4 Reconnectable windings

7.1.5 Examples

7.2 Connection and phase displacement symbols for single phase transformers not in three phase bank

7.2.1 Connection symbol

7.2.2 Phase displacement in clock number notation

7.2.3 Windings not intended to be loaded

7.2.4 Reconnectable windings

8 Rating plates

8.1 General

8.2 Information to be given in all cases

8.3 Additional information to be given when applicable

9 Safety, environmental and other requirements

9.1 Safety and environmental requirements

9.1.1 Liquid leaks

9.1.2 Safety considerations

9.2 Dimensioning of neutral connection

9.3 Liquid preservation system

9.4 DC currents in neutral circuits

9.5 Centre of gravity marking

10 Tolerances

11 Tests

11.1 General requirements for routine, type and special tests

11.1.1 General

11.1.2 Routine tests

11.1.3 Type tests

11.1.4 Special tests

11.2 Measurement of winding resistance

11.2.1 General

11.2.2 Dry-type transformers

11.2.3 Liquid-immersed type transformers

11.3 Measurement of voltage ratio and check of phase displacement

11.4 Measurement of short-circuit impedance and load loss

11.5 Measurement of no-load loss and current

11.6 Measurement of zero-sequence impedance(s) on three-phase transformers

11.7 Tests on on-load tap-changers ─ Operation test

11.8 Leak testing with pressure for liquid immersed transformers (tightness test)

11.9 Vacuum deflection test for liquid immersed transformers

11.10 Pressure deflection test for liquid immersed transformers

11.11 Vacuum tightness test on site for liquid immersed transformers

11.12 Check of core and frame insulation

12 Electromagnetic compatibility (EMC)

13 High frequency switching transients

Annex A (informative) Check list of information to be provided with enquiry and order

Annex B (informative) Examples of specifications for transformers with tappings

Annex C (informative) Specification of short-circuit impedance by boundaries

Annex D (informative) Examples of three-phase transformer connections

Annex E (normative) Temperature correction of load loss

Annex F (informative) Facilities for future fitting of condition monitoring systems to transformers

Annex G (informative) Environmental and safety considerations

Bibliography