ETC Matrix II Installation Manual page 11

Electrical
A main circuit breaker cabinet or other readily accessible input power disconnect
o
device is required. Main breakers which are not located in the same room must
have a physical means to be locked off and disabled.
It is recommended that during the installation process all disconnected isolation
o
devices associated with the racks are clearly marked so they will not be switched
on in error.
Floor Surface
Matrix II racks require a flat, stable and solid floor surface which can
o
accommodate a load of 1000 kg/m
beneath, a plinth with a suitable load carrying capacity is required in advance of
the introduction of the racks to the dimmer room. This can be achieved by using a
computer floor or optional Matrix II rack plinths.
CAUTION:
Accessibility
Allowing space around the rack (Rear access racks)
Rear access racks require adequate space in front to remove and replace
o
modules (minimum 80cm, 150cm recommended) and rear access to allow the
rear door for ventilation purposes and so that the door can be opened fully for
installation and maintenance access (minimum 100cm, 180cm recommended).
Racks may be positioned with their side to a wall surface, and may be located
o
side to side as required.
Where top access is planned for cables, ensure space above the rack is
o
adequate to allow for the bend radius of the supply cable, or access for main
power supply cable or busbar trunking and load cable trunking. Allow adequate
space to allow for future cable checking and maintenance access to trunking lids.
Allowing space around the rack (Swing frame racks)
Swing frame racks require adequate space in front to remove and replace
o
modules and sufficient space for the door to be hinged fully open for access to
wiring terminations inside the rack. A distance of 1.8m is recommended between
the front of the rack and the wall.
Racks may be positioned with their side and rear to a wall surface, and may be
o
located side to side as required.
Where top access is planned for cables, ensure space above the rack is
o
adequate to allow for the bend radius of the supply cable, or access for main
power supply cable or busbar trunking and load cable trunking. Allow adequate
space to allow for future cable checking and maintenance access to trunking lids.
Please see
Cable Routing
Load cables and supply cables can be routed through the top or base of the
o
racks. Protect all edges to avoid cable insulation damage.
1
Preparation for Installation
2
It is important to ensure that the rack is vertical, as even a minor
amount of structural distortion in the framework can prevent the
modules from being inserted or removed esily. This is particularly
important in the case of swing frame racks, as any distortion of the
chassis frame will prevent the swing frame opening and closing
correctly.
section 2 for mechanical dimensions.
2
[230lb/ft ]. If cable entry is required from
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