User manual for poly-phase meter
47
20 Maintenance
There is no need to verify the METER within the life cycle. METER maintenance
can be executed based on local regulations. Recommended every 5~10 years.
20.1 Clean
Use dry cloth to clean the surface of the METER and wipe the stains and insects.
Warning: Flowing water and high pressure water equipment is not
allowed to clean the METER, which may lead to short circuit.
20.2 Error and function check
The following process can be performed to realize error and function check
1. Insert the METER to the corresponding terminal of error test bench. (electric METER
wiring hole number detailed in chapter 19.1 "Meter Connection"), tighten the
connection screws(maximum torque is 3Nm)
2. Put the pulse testing part of the error testing bench align to the LED on the
METER.(Actual auxiliary terminal definition can be found on installation manual or on
the wiring diagram on the nameplate.)
3. Start the error test bench. Put on rate voltage but no current. Confirm no current
indictor display on LED. Check whether the electric METER is displayed correctly
(trouble-free code instructions).
4. After the METER is power on, set the METER to test mode through communication.
The test mode is with the highest level of security. Both communication key and
administrator password are needed to enter the test mode.
Attention: In order to not affect the actual accumulated power when doing
the test, each time METER is off from the electricity, the METER need
to set into the test mode again.
5. Start the error testing bench
6. Executing relay control operation through PC software (if the relay is applied), check
whether the relay is working properly.
7. Take off the METER from the error test bench after test complete.
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