ДСТУ EN 60137:2016 Изолированные вводы на переменное напряжение более 1000 В (EN 60137:2008, IDT)

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EN 60137:2008

Insulated bushings for alternating voltages above 1 000 V

прийнято як національний стандарт
 методом «підтвердження» за позначенням
Відповідає офіційному тексту

ДСТУ EN 60137:2016
 (EN 60137:2008, IDT)

Ізольовані уводи на змінну напругу понад 1000 В

З наданням чинності від 2016–09–01

CONTENTS

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Ratings

4.1 Standard values of highest voltage for equipment (U_m)

4.2 Standard values of rated current (I_r)

4.3 Standard values of rated thermal short-time current (I_th)

4.4 Standard values of rated dynamic current (I_d)

4.5 Minimum withstand values of cantilever load

4.6 Angle of mounting

4.7 Minimum nominal creepage distance

4.8 Temperature limits and temperature rise

4.9 Standard insulation levels

4.10 Test tap on transformer bushings

5 Operating conditions

5.1 Temporary overvoltages

5.2 Altitude

5.3 Temperature of ambient air and immersion media

5.4 Seismic conditions

6 Ordering information and markings

6.1 Enumeration of characteristics

6.2 Markings

7 Test requirements

7.1 General requirements

7.2 Test classification

7.3 Condition of bushings during dielectric and thermal tests

8 Type tests

8.1 Dry or wet power-frequency voltage withstand test

8.2 Long duration power-frequency voltage withstand test (ACLD)

8.3 Dry lightning impulse voltage withstand test (BIL)

8.4 Dry or wet switching impulse voltage withstand test (SIL)

8.5 Thermal stability test

8.6 Electromagnetic compatibility tests (EMC)

8.7 Temperature rise test

8.8 Verification of thermal short-time current withstand

8.9 Cantilever load withstand test

8.10 Tightness test on liquid-filled, compound-filled and liquid-insulated bushings

8.11 Internal pressure test on gas-filled, gas-insulated and gas-impregnated bushings

8.12 External pressure test on partly or completely gas-immersed bushings

8.13 Verification of dimensions

9 Routine tests

9.1 Measurement of dielectric dissipation factor (tan δ) and capacitance at ambient temperature

9.2 Dry lightning impulse voltage withstand test (BIL)

9.3 Dry power-frequency voltage withstand test

9.4 Measurement of partial discharge quantity

9.5 Tests of tap insulation

9.6 Internal pressure test on gas-filled, gas-insulated and gas-impregnated bushings

9.7 Tightness test on liquid-filled, compound-filled and liquid-insulated bushings

9.8 Tightness test on gas-filled, gas-insulated and gas-impregnated bushings

9.9 Tightness test at the flange or other fixing device

9.10 Visual inspection and dimensional check

10 Requirements and tests for bushings of highest voltages for equipment equal to or less than 52 kV made of ceramic, glass or inorganic materials, resin or combined insulation

10.1 Temperature requirements

10.2 Level of immersion medium

10.3 Markings

10.4 Test requirements

11 Recommendations for transport, storage, erection, operation and maintenance

11.1 Conditions during transport, storage and installation

11.2 Installation

11.3 Unpacking and lifting

11.4 Assembly

11.5 Operation

11.6 Maintenance

12 Safety

13 Environmental aspects

Bibliography