Probewell MT-1/WT3, User Manual, Page: 24 / 86

MT-1/WT3 User Guide
Page • 23
Installation of the Socket
1. Meter Removal
WARNING:
Do not remove the meter when it is under a heavy load to avoid sparks. The front
jaws of the meter base are live;
do not stick your hands or any metal objects into
the meter base! Certified safety glasses and rubber gloves are strongly
recommended.
Carefully remove the meter from its meter base according to your company safety
procedures . Avoid removing the meter under heavy load due to sparks. Before
removing the meter from a CT rated meter base, make sure to short the secondary
CT's to prevent equipment damages and personal injuries.
Make sure that the wiring connecting the meter to the line is compatible with one
of the configurations shown in Appendix B. If not compatible, stop here and put the
meter back into place. Field-testing with the MT-1/WT3 is not possible for that meter
installation.
2. Installation of the MT-1/WT3 Socket
1
Make sure the power switch of the MT-1/WT3 socket is OFF. Check Appendix B to
setup the twist-tabs and the Form Selector before inserting into the meter base.
With ringless meter base, remove the latch if necessary, using the quick release
mechanism.
Firmly take the MT-1/WT3 socket with the arrow pointing upward and align the rear
tabs of the socket with the front jaws of the meter base. Then firmly insert the
MT-1/WT3 socket into the meter base. Secure the installation. For ring-type meter
bases, a latch can be purchased as an option.
1
When the MT-1/WT3 is used in the meter shop, do not plug it in a test board. It will not run
properly. You may use a single-phase four-jaw meter base of at least 150VA capacity and keep
the Form Selector in the 1S/2S/15S position for all types of meters. The nominal voltage must
be respected according to the meter being tested.