Grass Valley K-Frame Installation Planning Guide Jul 07 2014 - Manual (Page 31)

K-FRAME — Installation Planning Guide 31
K-Frame Power Supply Frame Installation
K-Frame Power Supply Cooling
The top surface of the rear of the K-Frame Power Supply Frame has air
holes and is slightly recessed, which permits air flow even if equipment is
mounted in the rack directly above. These top recessed air holes must
remain open for proper cooling. Ensure paper or other obstructions do not
block these air holes.
K-Frame Power Supply AC Requirements
The K-Frame Power Supply Frame has provision to support up to three hot
swappable power modules. These convert the AC line input to 48V DC for
the Video Processor Frame. The cells for the three modules (referred to as
left, center, right) are identical and any or all cells can have a module
installed. Each cell has its own AC line cord. The supplies are power factor
corrected and automatically accommodate low line (120V nominal) or high
line (240V nominal). The power supply frame has a rating of 100 – 240 volts,
although it is designed and tested for a range of 90 to 264 volts to accom-
modate under and over voltage conditions. A Compact K-Frame is sup-
plied with one power module. A second power module can be fitted as a
redundant power supply option. A Standard K-Frame is supplied with two
power modules. A third power module can be fitted as a redundant (n+1)
power supply option.
Supplied Power Cables
The K-Frame Power Supply Frame has IEC C19 sockets, instead of the more
common C13 style, to accommodate potentially higher currents. Cables
provided with K-Frame systems are matched to the destination country’s
standard. For example, in the USA C19 to NEMA 5-20P cables are provided
(
Figure 17 ).
Figure 17. USA Power Cable Example
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