GB/T 4056-2019 Active National standards

GB/T 4056-2019 Dimensions of ball and socket couplings of string insulator units

Publish Date: 2019-12-10 Implement Date: 2020-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 4056-2019

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Insulator

ICS Name: Insulator

Publish Date: 2019-12-10

Implement Date: 2020-07-01

Pages: 31 pages

Scope

This standard specifies the dimensions of the standard ball and socket joint series using standard locking pins (see GB/T 25318-2019), including the dimensions and tolerances involved in the installation of insulators in the ball and socket, and also stipulates the dimensions of the inspection gauges required to check these dimensions, so as to ensure the interchangeability of insulators or metal accessories.
This standard applies to disc-shaped and long-rod-shaped insulator string elements and their metal accessories of the ball and socket joint.
The dimensions of the ball and socket specified in this standard apply to finished products after any surface treatment.
Appendix A gives the limit positions of the ball in the socket.
Note: This standard only relates to the dimensions necessary for installation, and does not specify material properties and working loads. The matching of connection marks with strength grades is specified in GB/T 7253-2019 and GB/T 26874-2011.