ДСТУ IEC 60076-15:2016 Трансформаторы силовые. Часть 15. Силовые трансформаторы, наполненные газом (IEC 60076-15:2015, IDT)

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Наказ від 22.08.2016 № 244

ІЕС 60076-15:2015

Power transformers — Part 15: Gas-filled power transformers

прийнято як національний стандарт
методом «підтвердження» за позначенням
 

ДСТУ ІЕС 60076-15:2016
(ІЕС 60076-15:2015, IDT)

Трансформатори силові. Частина 15. Силові трансформатори, наповнені газом

З наданням чинності від 2016-09-01

CONTENTS

FOREWORD

1 Scope

2 Normative references

3 Terms and definitions

3.5 Terms, definitions, symbols and units relating to gas and vacuum tightness

4 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

5.2.1 General

5.2.2 Identification symbols

5.2.3 Transformers with alternative cooling methods

5.3 Temperature-rise limits

5.3.1 Classification and insulation system temperature

5.3.2 Normal temperature-rise limits

5.3.3 Reduced temperature-rises for transformers designed for high cooling air temperatures or special air cooling conditions

5.3.4 High altitude temperature-rise correction

5.3.5 Reduced temperature-rise for transformers designed for high cooling water temperatures

5.3.6 Temperature rise during specified load cycle

5.4 Insulation level

5.5 Load rejection on transformers directly connected to a generator

5.6 Rated voltage and rated frequency

5.7 Provision for unusual service conditions

5.8 Highest voltage for equipment Um and dielectric tests levels

5.9 Additional information required for enquiry

5.10 Components and materials

5.11 Requirements for gases and gas tightness

5.11.1 Requirements for gases

5.11.2 Gas tightness

6 Requirements for transformers having a tapped winding

7 Connection phase displacement symbols

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 Gas leaks

9.1.2 Safety considerations

9.2 Dimensioning of neutral connection

9.3 Handling procedure for SF6

9.4 d.c. 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 short-circuit impedance and load loss

11.3 Leak testing with pressure (tightness test)

11.4 Pressure tests for tanks

11.5 Temperature-rise test

11.5.1 General

11.5.2 Corrections

11.6 Measurement of sound level

11.6.1 General

11.6.2 Prescribed contour

12 Electromagnetic compatibility (EMC)

13 High frequency switching transients

14 Earthing terminal

15 Information required with enquiry and order

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

A.1 Rating and general data

A.1.1 Normal information

A.1.2 Special information

A.2 Parallel operation

Annex B (informative) Transient loading – Mathematical model

B.1 General

B.2 Mathematical model for temperature distribution in a winding of a gas-filled power transformer – The hot-spot concept

Annex C (informative) Gauges, indicators and relays for gas-filled power transformers

Bibliography