D - MV & LV architecture selection guide

Example: electrical installation in a printworks

Printing of personalized mailshots intended for mail order sales.

Characteristic	Category
Activity	Mechanical
Site topology	single storey building, 10000m² (8000m² dedicated to the process, 2000m² for ancillary areas)
Layout latitude	High
Service reliability	Standard
Maintainability	Standard
Installation flexibility	No flexibility planned: - HVAC - Process utilities - Office power supply Possible flexibility: - finishing, putting in envelopes - special machines, installed at a later date - rotary machines (uncertainty at the draft design stage)
Power demand	3500kVA
Load distribution	Intermediate distribution
Power interruptions sensitivity	Sheddable circuits: - offices (apart from PC power sockets) - air conditioning, office heating - social premises - maintenance premisesb long interruptions acceptable: - printing machines - workshop HVAC (hygrometric control) - Finishing, envelope filling - Process utilities (compressor, recycling of cooled water) No interruptions acceptable: - servers, office PCs
Disturbance sensitivity	Average sensitivity: - motors, lighting High sensitivity: - IT No special precaution to be taken due to the connection to the EdF network (low level of disturbance)
Disturbance capability	Non disturbing
Other constraints	Building with lightning classification: lightning surge arresters installed Power supply by overhead single feeder line