Installing The Socket - Probewell MT-1/WT3 User Manual

MT-1/WT3 User Guide

Installing the Socket

1. Removing the Meter
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 base according to your company's safety
procedures. Avoid removing the meter under heavy load it may cause sparks. Before
removing the meter from a CT-rated meter base, be sure to short the secondary CTs
to prevent equipment damage and personal injury.
Make sure 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.
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2. Installing the MT-1/WT3 Socket
Make sure the MT-1/WT3's power switch is set to "OFF". Check Appendix B to setup
the twist tabs and the Form Selector before inserting into the meter base. For
ringless meter bases, remove the latch if necessary, using the quick-release
mechanism.
Hold the MT-1/WT3 socket firmly, with the arrow pointing upward and align the
socket's rear tabs with the meter base's front jaws. 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.
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When the MT-1/WT3 is used in the meter shop, do not plug into a test board. It will not run
properly. You can use a single-phase four-jaw meter base with a capacity of at least 150 VA.
Keep the Form Selector in the 1S/2S/15S position for all meter types. The nominal voltage
must be respected according to the meter being tested.
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