AS/NZS 60137:2008

1 - AS/NZS 60137:2008 Insulated bushings for alternating voltages above 1000 V
4 - PREFACE
5 - CONTENTS
7 - INTRODUCTION
9 - 1 Scope
9 - 2 Normative references
11 - 3 Terms and definitions
16 - 4 Ratings
16 - 4.1 Standard values of highest voltage for equipment (Um)
16 - 4.2 Standard values of rated current (Ir)
17 - 4.3 Standard values of rated thermal short-time current (Ith)
17 - 4.4 Standard values of rated dynamic current (Id)
17 - 4.5 Minimum withstand values of cantilever load
17 - 4.6 Angle of mounting
17 - 4.7 Minimum nominal creepage distance
18 - 4.8 Temperature limits and temperature rise
18 - 4.9 Standard insulation levels
19 - 4.10 Test tap on transformer bushings
19 - 5 Operating conditions
19 - 5.1 Temporary overvoltages
19 - 5.2 Altitude
20 - 5.3 Temperature of ambient air and immersion media
20 - 5.4 Seismic conditions
20 - 6 Ordering information and markings
20 - 6.1 Enumeration of characteristics
22 - 6.2 Markings
22 - 7 Test requirements
22 - 7.1 General requirements
23 - 7.2 Test classification
24 - 7.3 Condition of bushings during dielectric and thermal tests
24 - 8 Type tests
25 - 8.1 Dry or wet power-frequency voltage withstand test
25 - 8.2 Dry lightning impulse voltage withstand test (BIL)
26 - 8.3 Dry or wet switching impulse voltage withstand test (SIL)
27 - 8.4 Thermal stability test
28 - 8.5 Temperature rise test
30 - 8.6 Verification of thermal short-time current withstand
31 - 8.7 Cantilever load withstand test
32 - 8.8 Tightness test on liquid-filled, compound-filled and liquid-insulated bushings
32 - 8.9 Internal pressure test on gas-filled, gas-insulated and gas-impregnated bushings
32 - 8.10 External pressure test on partly or completely gas-immersed bushings
33 - 8.11 Verification of dimensions
33 - 9 Routine tests
33 - 9.1 Measurement of dielectric dissipation factor (tan δ) and capacitance at ambient temperature
34 - 9.2 Dry lightning impulse voltage withstand test (BIL)
34 - 9.3 Dry power-frequency voltage withstand test
35 - 9.4 Measurement of partial discharge quantity
35 - 9.5 Tests of tap insulation
36 - 9.6 Internal pressure test on gas-filled, gas-insulated and gas-impregnated bushings
36 - 9.7 Tightness test on liquid-filled, compound-filled and liquid-insulated bushings
36 - 9.8 Tightness test on gas-filled, gas-insulated and gas-impregnated bushings
37 - 9.9 Tightness test at the flange or other fixing device
38 - 9.10 Visual inspection and dimensional check
38 - 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
38 - 10.1 Temperature requirements
38 - 10.2 Level of immersion medium
38 - 10.3 Markings
39 - 10.4 Test requirements
50 - Bibliography
51 - Annex ZA (normative) Radio influence voltage (RIV) test
52 - Annex ZZ (normative) Variations to IEC 60137, Ed. 5.0 (2003) for application in Australia and New Zealand
55 - Annex ZA (normative) Radio influence voltage (RIV) test

Specifies the characteristics and tests for insulated bushings for electrical equipment with a voltage above 1000 volt a.c. and a nominal frequency in the range 15-60 Hz.

Originated as AS 1265-1990.
Jointly revised and redesignated as AS/NZS 60137:2008.