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POWERING TECHNOLOGY

Manual No. MS0027-MAN rev. 4

guardian_access_3u_ms27-man-rev4-0817.indd

5.4 Commissioning procedure

1. Remove the covers and check that all connections are made according to the installation

drawing. Verify that all connections are properly tightened with sucient torque.

2. Ensure that load and battery MCB breakers are set to OFF position - ensuring the load

and battery strings are connected.

3. Ensure that all rectier modules are removed. If not, remove each one in turn starting

from the rightmost position.

4. If the rectier subrack has dip switches for addressing, verify that the dip switches are

set correctly.

5. Check the battery polarity with the multimeter (3½ Digit, 0·1% dc). Place the positive

lead of the meter to the positive busbar and the negative lead to the battery breaker. The

meter must now show a positive voltage. If the voltage is negative, change over the

connection of the blue and black battery cables to the batteries.

6. Turn on the AC mains voltage.

7. Measure the AC voltage on the AC terminal block between phases and neutral. The

correct value is approximately 230V. If the value is dierent, check the AC connection.

8. Plug in all rectier modules, starting from the leftmost position. Make sure to fasten the

rectiers again. The rectiers will turn on automatically.

9. Set all load breakers into the “1” (ON) position.

10. The green LED on the controller should blink for approximately 20 sec.

11. The output voltage will increase slowly to U1 (oat charge voltage).

12. Turn the battery breaker(s) to the “1” (ON) position.

13. Set the battery current limit according to the battery manufacturers requirements.

14. If any alarms are present, they should be reset in accordance with the procedure for the

installed controller, ACC or PCC.

15. The system should now be without alarms.

16. Attach all the system covers in their correct places.

17. Check that all changes to drawings, if any, have been completed.

18. Clean the site.

19. Fill in the commissioning record (see end of chapter).

Unipower Guardian Access 3U User Manual

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