S-742 Medium-Voltage AC Contactors, Controllers, and Control Centers specification launched for public review

JIP33 has issued the S-742 Medium-Voltage AC Contactors, Controllers, and Control Centers specification for public  review.  The consultation period runs for 5 weeks and will close on Sun, 10 April 2022 at 23:00 GMT.

The purpose of this specification is to define a minimum common set of requirements for the procurement of medium-voltage AC contactors, controllers, and control centers in accordance with UL 347, Seventh edition, published November 23, 2020, UL Standard for Safety for Medium-Voltage AC Contactors, Controllers, and Control Centers for application in the petroleum and natural gas industries.

The JIP33 standardized procurement specification follows a common document structure, normally comprising of four documents.  However as previously advised, going forward this has now been amended to five documents, with the Specification with Justifications now added, which together with the purchase order define the overall technical specification for procurement.

It has been developed in consultation with a broad user and supplier base to realize benefits from standardization and achieve significant project and schedule cost reductions.

The files are available to download at .

Updates and future specifications will be announced via the project’s mailing list, LinkedIn and Twitter profile.

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