Manual

CLASS 2000 METER
62-0389-05 38
10.1 Line Voltage Diagnostics
E-Mon meters detect the direction of rotation of three-phase power. The proper phase
sequence must be A-B-C.
The AC power input must be in proper phase sequence A, B, C. If incorrect, the display
will read “Check Install.” See Fig. 28.
Fig. 28. Check Install Error.
How to Verify & Resolve a Phase Sequence Error
CAUTION
Dangerous voltage is present inside the meter!
The following steps are for Qualified Electrical Service Personnel only.
1. Have the electrician unplug or disconnect all three current sensors at the meter
input terminal.
2. If the meter still displays “Check Install” without any sensors connected the
utility power or transformer is connected counter clockwise (CBA) reverse phase
rotation.
3. Disconnect the power to the meter line voltage inputs. Swap A & C line inputs.
Power up the meter and verify there is not a “Check Install” displayed on the LCD
screen.
4. If reverse rotation line condition was present in step 2 and corrected in step 3
then swap the sensor inputs plugs A and C. Plug sensor “A” plug into the sensor
“C” input and plug sensor “C” plug into the “A” input. This will now match the line
phase correspondence.
NOTE: A light load or no load can cause the “Check Install” message to be dis-
played.