BS 5125:1990

Committees responsible
Foreword
Specification
1 Scope
2 Definitions
3 Metallic components
4 Insulation
5 Contacts
6 Terminals
7 Plug
8 Socket
9 Retaining device
10 Closer cap for bolted socket
11 Dimensions
12 Flameproof enclosure
13 Type tests
14 Routine tests
15 Marking
Appendix
A Information to be provided with enquiry and order
Tables
1 Properties of electrical insulating materials
2 Contact tube conditioning data
Figures
1 Bolted plug
2 Bolted socket
3 Restrained plug
4 Restrained socket
5 Bolted plug and socket assembly
6 Restrained plug and socket assembly
7 Closer cap for bolted socket
8 Associated mounting flange

Specifies dimensional, construction and test requirements for plugs and sockets for flexible cables having three power and one pilot contacts and a scraping earth contact.

This British Standard specifies the dimensional and test requirements for 50 A flameproof restrained and bolted plugs and sockets suitable for voltages not exceeding 650 V, primarily intended for use with mining apparatus which is connected to its power supply by means of a flexible cable. These plugs and sockets incorporate three power contacts, one pilot contact for electrical interlocking, and a scraping earthing contact. Provision is also made for cable couplers, to enable lengths of flexible cable to be coupled together.

NOTE 1 The figures in this standard show only those essential features and dimensions for function and interchangeability.

NOTE 2 Appendix A lists the information to be supplied by the purchaser.

NOTE 3 The titles of publications referred to in this standard are listed on the inside back cover.