GE Industrial Solutions Entellisys Installation - Manual (Page 31)

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Entellisys Low Voltage Switchgear
Chapter 4. Equipment Installation
NOTE: When the equipment is installed on a surface
subject to impact (shock) loads due to operating
conditions or environmental seismic (earthquake)
conditions, the anchor bolts should be fabricated of
medium carbon steel (grade 5 load rating).
NOTE: Lorsque l’équipement est installé sur une surface
sujette à des charges d’impact (choc) causées par les
conditions d’opération ou des séismes environnementaux
(tremblements de terre), les boulons d’ancrage devraient
être fabriqués d’acier à moyenne teneur en carbone
(spécification de charge classe 5).
The floor channels under the front and rear switchgear
anchor points (see Fig. 4-2) should be embedded in a level
concrete slab with their top surfaces flush with the finished
floor. It is essential that these steel channels be level and
aligned with each other prior to final anchoring, to prevent
distortion of the switchgear structure, to assure proper
mechanical and electrical connections between shipping
splits, and to assure proper interfacing to other close-coupled
equipments.
Entellisys Switchgear and Load Center Substations are
frequently mounted on steel floors and/or structural steel in
industrial installations (such as a mezzanine) to minimize
usage of production floor space. Regardless of the type of
mounting surface, the requirements for a smooth level
surface remain.
Fig 4-2. Location of equipment anchor points