Grounding And Power Requirements - Oracle EAGLE Application B Card Hardware And Installation Manual

Hardware and Installation Manual

Grounding and Power Requirements

Before installing E5-APP-B cards into an EAGLE shelf, make sure that the grounding and power
requirements in the appropriate following sections have been met.
Grounding Requirements
EAGLE Shelf Power Requirements
Grounding Requirements
Tekelec systems operate as digital isolated ground plane systems in a central office environment and
require a single connection to the central office ground window. The system's ground cables must
provide the sole grounding connection between the entire system and the central office grounding.
Warning: Always install an isolator pad between the frame and ground. Tekelec frames
are shipped with isolator pads to completely isolate the frames from ground. If a
non-Tekelec frame is used, an isolator pad must be provided.
The system can use three types of grounding paths:
Battery return
The battery return grounding path is the return path for all –48VDC loads in the system. This path
is isolated from other system grounds and connects to the rest of the central office through the
–48VDC return connections located on the breaker panels of each frame.
Logic Ground
Some system types require connection to a logic ground. The logic ground path provides a common
voltage reference point between all circuit boards of a system. Each connection terminates to the
system ground. The logic ground path is shown on your system's interconnect drawing. The logic
ground path does not carry current.
Frame/shelf ground
The frame/chassis ground path provides a low impedance connection for all metal parts of the
entire system, including the frame, doors, shelves, and end panels. Each frame/chassis connection
within the system lineup terminates to the frame and connects to the main ground by way of Htaps,
#6 American Wire Gauge (AWG) to 1/0 cable.
Note: The frame/chassis ground path does not carry current.
For products installed in a frame, the doors installed are grounded to the frame through a two-hole
lug ground wire and through a screw-down latch.
a cutaway view example of an open frame door showing the door ground strap.
910-6535-001 Revision D, February 2014
Safety and Pre-Installation Requirements
Figure 6: Door Grounding Strap Placement shows
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