GE L90 Instruction Manual page 825
Line current differential system
Hide thumbs
Also See for L90:
- Instruction manual (832 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (822 pages)
Table of Contents
Advertisement
CHAPTER 11: MAINTENANCE
To replace the CPU module:
1.
With power to the unit off, at the back of the CPU module in the second slot, disconnect any cables. Remove the silver
SFP connector(s) from the CPU module, and keep it handy. Then remove the CPU module by sliding the module out
from the front of the relay. (See the next section for instructions.)
Figure 11-22: Remove silver SFP connector (shown here under LK1 label)
2.
At the front of the relay, insert the new CPU module in the second slot. The new CPU has two connection slots on the
front. Ensure that the RS485 connector and the black cover plate are not on the back of the CPU module before sliding
the module into the front of the relay.
Figure 11-23: Rear of a CPU module before insertion without RS485 connector or cover plate
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
REPLACE FRONT PANEL
11
11-21
Advertisement
Table of Contents
