2.18
SEL-551 Relay Instruction Manual Date Code 20110408
Installation
Circuit Board Jumpers and Battery
Step 4. Grasp the black knob on the front of the drawout assembly, and
pull the assembly from the relay chassis.
Step 5. Locate the battery on the right-hand side of the relay main
board.
Step 6. Remove the battery from beneath the clip, and install a new
one.
The positive side (+) of the battery faces up.
Step 7. Slide the drawout assembly into the relay chassis.
Step 8. Reconnect the analog signal ribbon cable.
Step 9. Replace the relay front panel and reenergize the relay.
Step 10. Set the relay date and time via serial communications port or
front panel (see Section 5: Serial Port Communications
and Commands or Section 6: Front-Panel Interface,
respectively).
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