EAGLE Power Source Change Question

Asset ID:	1-71-2274584.1
Update Date:	2017-06-08
Keywords:

Solution Type Technical Instruction Sure

Solution 2274584.1 : EAGLE Power Source Change Question

Applies to:

Oracle Communications EAGLE (Software) - Version EAGLE 43.x and later
Tekelec

Goal

Customer performed an electric maintenance Window activity to migrate the STP input A to a new rectifier system. Following is sequence of events:

Power down the breaker that feeds the A input >>> The cards from the A side remains powered ON.
Disconnect the negative cable in the old rectifier side >>> No change.
Disconnect the positive cable in the old rectifier side >>> all the cards related to the Fuse Bank A turn off, the redundancy stops working.
Move the cables to the new rectifier and connects the negative cable >>> Cards remained off.
Connect the positive cable and the cards turned on without even turn on the breaker
The client turns on the breaker and the cards remain ON.

As you see in the procedure the redundancy failed when the positive cable was removed, it is the normal behavior? or we are facing a design issue in the 1U FAP P/N 870-2804-01?

Solution

Live feed in are fully redundant. However; the returns are not common and when you lift the return you open the circuit, and loose the cards on that power feed.
Powers are redundant because in a normal working return cables are not removed and if you loose one of your powers A or B, Eagle will continue to work thanks to the other remaining power A or B.
Now, if you remove the return cable, this is different, we are not in a case where we loose one of the power feeding during a normal working.
Hence the Eagle behavior is as expected.

In order to change power source; Oracle Installation Support Team should have been involved.

Installation TAC team provides the process based upon the type of input power provided to the Eagles.

There is no generic customer oriented document for that. Customer should contact consultancy/installation TAC for such actions who can provide a detailed method of procedure or can perform the actions directly.

As this is not a break/fix problem; customer will have to contact their Oracle Account manager who can help with aligning the right resources for the requested service.

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