GRASS VALLEY KARRERA, Installation & Service Manual

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Frame Installation
30
Power Supply Rack Installation
Standard Power Cooling
The GV K-Frame XP 1-RU Power Supply Frame has air holes and is slightly
recessed, which permits air flow even if equipment is mounted int eh 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.
Standard Power Supply AC Requirements
The GV K-Frame XP 15-RU Power Supplies have provision to support up to four hot
swappable power modules. These convert the AC line input to 48V DC for the Video
Processor Frame. The cells for the four modules (referred to as left, center-left, center-
right, 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 supplies
have a rating of 90-140V AC for low line and 180-240V AC high line to accommodate
under and over voltage conditions.
The 15RU Frame is supplied with three power modules. A fourth power module can be
fitted as a redundant (n+1) power supply option.
Supplied Power Cables for 25-RU
The GV K-Frame XP Standard Power Supply Frame has IEC C19 sockets, instead of the more
common C13 style, to accommodate potentially higher currents. Cables provided with the