MT-1/WT3 User Guide
Page • 41
Example 8: Meter Tested in the Meter Shop
The MT-1/WT3 can be used as a test board in the meter shop to check both single-
phase and three-phase meters using a single-phase four-jaw meter base mounted
on the wall. The meter base must provide a voltage of 120 V or 240 V on the two
upper jaws with a capacity of at least 150 VA. The meter base's voltage must respect
the nominal voltage value of the meter under test.
Before inserting the MT-1/WT3 in the meter base, set the Form Selector switch in
the back of the tester at the 1S/2S/15S position so that the MT-1/WT3 is powered
from the two upper tabs (see Appendix C). It is recommended to use a holding ring
to secure the MT-1/WT3 in place.
Once installed, the test procedure to apply is the same as in the field.
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