COMPANION FLANGES. PN 6.
Edition 1976-08-15

COMPANION FLANGES. PN 10 AND PN 16.
Edition 1976-08-15

TELECONTROL EQUIPMENT AND SYSTEMS. PART 5: TRANSMISSION PROTOCOLS. SECTION 102: COMPANION STANDARD FOR THE TRANSMISSION OF INTEGRATED TOTALS IN ELECTRIC POWER SYSTEMS. (Endorsed by AENOR in December of 1997.)
Edition 1997-12-01

TELCONTROL EQUIPMENT AND SYSTEMS. PART 5: TRANSMISSION PROTOCOLS. SECTION 103: COMPANION STANDARD FOR THE INFORMATIVE INTERFACE OF PROTECTION EQUIPMENT. (Endorsed by AENOR in June of 1998.)
Edition 1998-06-01

J2629 Companion Spreadsheet
Edition 2010-10-15

Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 420: Multiple talkers and multiple listeners - Ship systems interconnection - Companion standard requirements and basic companion standards (Endorsed by AENOR in July of 2002.)
Edition 2002-07-01

Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 420: Multiple talkers and multiple listeners - Ship systems interconnection - Companion standard requirements and basic companion standards (IEC 61162-420:2001)
Edition 2003-02-01

Telecontrol equipment and systems. Conformance test cases for the IEC 60870-5-104 companion standard
Edition 2016-06-30

Risk management guidelines - Companion to AS ISO 31000:2018, Part 1: Boards and executives
Edition 2020

Companion Flanges, Type A (External Pilot) and Type S (Internal Pilot)
Edition 2016-01-26