BS 137-2:1973
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
03-15-1997
English
10-08-1973
Co-operating organizations
Foreword
Specification
1 Scope
2 Definitions
3 Materials, workmanship and finish
4 Design and construction
5 Mechanical loads
6 Ball and socket couplings for string insulator units
7 Screw threads of pin insulators
Appendices
A Selection and application of the line insulators
B Dimensions of pin and line post insulator heads
reflecting current British practice
C Dimensional and mechanical characteristics of string
insulator units of the cap and pin type either with
ball and socket couplings or with clevis and tongue
couplings
Tables
1 Minimum failing loads
2 Power-frequency and impulse withstand voltages
3 Recommended test voltages and radio interference
noise limits
4 Specified values of mechanical and dimensional
characteristics for string insulator units with ball
and socket couplings
5 Specified values of mechanical and dimensional
characteristics for string insulator units with
clevis and tongue couplings
Figures
1 Gauge for screw threads of pin insulators for use
with pins with small steel heads
2 Gauge for screw threads of pin insulators for use
with pins with large steel heads
3 Head of porcelain insulator normally used on 11 kV
lines
4 Head of porcelain insulator normally used on 33 kV
lines
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