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Which LVD harmonised standard[s]?

Hi all,

I'm new to designing electrical equipment for 'test rigs', equipment I wouldn't define as machinery. On these rigs there may be measurement instrumentation, a low voltage control panel with a PLC, switchgear and control gear along with emergency stop circuits, The plant may have pipelines containing non-hazordous liquids/gases and control valves and pumps, but no external moving parts.

So i'd like to know if there is a definitive LVD harmonised standard that I can buy with the aim of CE marking this equipment (obviously there's the EMC directive to condider but i'm just thinking in terms of the LVD as I don't beleive the Machinery Directive is relevant here, but maybe i'm wrong). Can for example EN60947-5-1 cover the LVD or is there a host of other standards I've not considered?

Also, where can the IET wiring regs BS7671 be of use for the purpose of CE marking electrical equipment?

Thanks in advance

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0 Udtwmc over 5 years ago

Thank you all for your advice and the link to LVD standards library - well at least there’s not that many to go at then :) and I’ll definitely check out those CE marking webinars. Thanks.

My initial thought was that a pump could be defined as machinery, it does have a moving part linked to a drive after all, but then felt the internal moving part would never directly come into contact with anyone - I say this as I imagine someone stripping it down without disconnecting the supply first.

I have worked from EN60204 and EN13849 in the past (for material handling machinery) and it seemed ‘relatively’ more obvious in how to meet the requirements of the MD. instrumentation and measuring equipment alone I find difficult to pin down in relation to CE marking.

The test rigs are generally one-off designs involving a fair bit of research and development (I’m mainly electrical design). While we use commercial off the shelf equipment, the completed test rig itself may not have ever been built before so it’s unlikely to have a type C standard - I’d love to find one though!

Another question ... would I be wrong in saying the MD always trumps the LVD if the equipment is indeed defined as machinery? In other words, can following EN60204, EN13849 (plus EMC standards) be good enough for at least the electrical design side of the control equipment?
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0 Udtwmc over 5 years ago

Thank you all for your advice and the link to LVD standards library - well at least there’s not that many to go at then :) and I’ll definitely check out those CE marking webinars. Thanks.

My initial thought was that a pump could be defined as machinery, it does have a moving part linked to a drive after all, but then felt the internal moving part would never directly come into contact with anyone - I say this as I imagine someone stripping it down without disconnecting the supply first.

I have worked from EN60204 and EN13849 in the past (for material handling machinery) and it seemed ‘relatively’ more obvious in how to meet the requirements of the MD. instrumentation and measuring equipment alone I find difficult to pin down in relation to CE marking.

The test rigs are generally one-off designs involving a fair bit of research and development (I’m mainly electrical design). While we use commercial off the shelf equipment, the completed test rig itself may not have ever been built before so it’s unlikely to have a type C standard - I’d love to find one though!

Another question ... would I be wrong in saying the MD always trumps the LVD if the equipment is indeed defined as machinery? In other words, can following EN60204, EN13849 (plus EMC standards) be good enough for at least the electrical design side of the control equipment?
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Which LVD harmonised standard[s]?

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