Instructions / Assembly

Installation Class 3130 / 3110
An equipment importance factor, Ip, that is greater than one (Ip > 1.0) is assumed and
indicates that equipment functionality is required after a seismic event and after
seismic simulation testing. This importance factor is applicable for designated seismic
systems (i.e., special certification) servicing critical infrastructure and essential
buildings where post-earthquake equipment functionality is a requirement.
Incoming and outgoing bus, cable, and conduit must also be considered as related but
independent systems. These distribution systems must be designed and restrained to
withstand the forces generated by the seismic event without increasing the load
transferred to the equipment. For applications where seismic hazard exists, it is
preferred that bus, cable, and conduit enter and exit the bottom of the equipment
enclosure.
Seismic certification of nonstructural components and equipment by Schneider
Electric is just one link in the total chain of responsibility required to maximize the
probability that the equipment will be intact and functional after a seismic event.
During a seismic event the equipment must be able to transfer the inertial loads that
are created and reacted through the equipment’s force resisting system and
anchorage to the load-bearing path of the building structural system or foundation.
Anchorage of equipment (i.e., nonstructural supports and attachments) to the primary
building structure or foundation is required to validate seismic conformance. The
construction site structural engineer or engineer of record (EOR) or the registered
design professional (RDP) is responsible for detailing the equipment anchorage
requirements for the given installation. The installer and manufacturers of the
anchorage system are responsible for assuring that the mounting requirements are
met. Schneider Electric is not responsible for the specification and performance of
equipment anchorage systems.
Tie-down Points for Rigid Wall Mounted Equipment
The equipment enclosure provides anchorage tie-down points to accept anchor
attachments to the building structure or foundation. Indoor enclosures provide
enclosure base frame clearance holes for bolted anchorage attachments, outdoor
enclosures provide enclosure base frame clearance holes for bolted anchorage
attachments please obtain drawings for actual locations.
Equipment installations of single, stand-alone safety switches must be anchored using
all enclosure tie-down points as shown on drawings for indoor and outdoor
applications respectively.
Equipment installations using welded supports and attachments in lieu of bolted
supports and attachments must ensure the weld locations are distributed similarly to
the locations of enclosure anchorage clearance holes. Welded supports and
attachments must be properly sized to ensure the weldment withstand capacity
exceeds the earthquake demand at location of equipment installation. Precautions
shall be made to properly vent and shield the equipment enclosure during the field
welding process. Schneider Electric is not responsible for equipment damage caused
by field welded supports and attachments.
Anchorage Assembly Instructions
The bolted anchor assembly illustrates the equipment’s as-tested attachment to the
seismic shake-table test fixture. The equipment seismic rated capacity, as stated on
the Schneider Electric CoC, was achieved with the identified size and grade
attachment hardware. Field installed equipment attachment and support detailing
shall be in accordance with the anchorage system requirements as defined by the
construction site Engineer of Record (EOR) or Registered Design Professional (RDP).
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