Reliable Power Meters
Method Statement for
Commissioning a MultiPoint

Everyone seems to be calling for "method statements" these days and the following is provided as a basis to bring into operation Reliable Power Meters' MultiPoint power quality recorders.

  1. Conduct a physical examination of, if appropriate, the cabinet wherein the unit is housed.

  2. Conduct a physical examination of the base (1950) ensuring it has not suffered any severe knocks that could have distorted its shape.

  3. Conduct a similar investigation on the main acquisition unit (1941/8).

  4. If the physical examination passes, apply power to the unit.

  5. Within two minutes the 'boot sequence' should occur. This consists of the row of eight LEDs lighting for approximately 1 second, extinguishing, and then each turning on and off in the sequence A, B, & C volts then A, B, C, N, and finally G current. After this, all lamps should extinguish until the following step.

  6. If voltages of greater than 12VACrms and currents of greater than 10% of the CT range are present on the inputs, then the corresponding LEDs will light within 30 seconds after completion of the above 'boot sequence'.

  7. Connect a local PC/laptop to the base via the LAN port using a 'crossover' cable (disconnecting any LAN already connected).

  8. Using PAS, 'browse' for the recorder to test the LAN is functional.

  9. If the previous test passes, attempt to 'link' to the unit. If successful, use the 'Site Directory' dialogue to enter the site and location details, and to adjust the input type (Star/Delta) and frequency.

  10. Using 'Help/About', confirm the software on the recorder is the latest available version. If not, unlink from the unit and load the latest version using the instructions as found here. Note, if a later version is loaded onto the unit, there will be a mandatory 30 minute wait before tests can proceed. Once completed, link to the unit.

  11. Switch to 'scope mode - voltage and currents'. Confirm the voltages indicated reflect the voltages as presented to the unit.

  12. If the system is measuring the output of interfacing Voltage Transformers (VTs) then, using 'Options/Multipliers', enter the multiplication ratio of the VT. Check the voltage now reflects the true voltage of the system.

  13. If currents are presented to the unit, using the same oscilloscope function to verify the currents indicated are what are presented to the unit (this being measured using an independant current clamp).

  14. If these current inputs are derived from interfacing CTs, enter the ratio of the CT using 'Options/Multipliers' and again verify that the current displayed now reflects the actual current of the monitored system.

  15. Switch to 'Scope - Phasors' and check all phase angles, especially that none of the currents are reversed or the CTs rotated. If incorrect, testing should cease and the client consulted to chose a remedy. Most wiring faults can be corrected using the phase correction buttons on the Phasors screen, but this may not be accepted by the client and may chose to correct the wiring.

  16. If all ok, begin a 1 hour recording session to test the disk.

  17. Unlink at this point and reconnect the recorder to the LAN system (if used).

If there is more than one recorder, repeat this procedure with each recorder until all are tested.

If there are any questions please ask.

Note: This web page does not form part of any official documentation.
Any information contained herein is used at own risk.

©  M.T.P. - 06.07.03