Installation
8
CENTRON® Polyphase Meter Technical Reference Guide
Installing the Meter into Service
Install the meter base using standard meter installation practices.
The current and potential terminals extend as blades, or bayonets, from the back of the
meter. The meter is plugged into the socket so that the bayonets engage the main socket
jaws that connect to the service lines. Clamping pressure on the bayonets is provided by the
heavy spring pressure of the socket jaws. In some heavy-duty sockets, jaw clamping
pressure is provided by a handle or wrench.
On meters equipped with LCD displays, verify register operations by observing the display:
LCD displays the correct number of digits (4 or 5).
If the register only displays a Segment Test (all display items shown) and flashes
“
norDisplay
” or "
3BReset
", then the register has not been programmed.
Verify that no errors are displayed.
Retrofitting with Personality Modules
CENTRON meters can be upgraded to increase functionality by changing the Personality
Modules.
Do not power ON the meter without the inner cover in
place. Power the meter OFF before removing the inner
cover. Personality modules are sensitive to ESD
damage. Take appropriate grounding measures before
retrofitting!
To change or add a Personality Module:
1
Remove power from the meter.
2
Remove the outer cover.
3
Remove plastic inner cover by holding the meter with both hands and applying equal
pressure on either side of the three and nine-o’clock positions. The inner cover is held in
place by four plastic tabs on the meter base.
