Operation – Operation Procedures

Total power off – isolating one UPS in a parallel system.

From the UPS: From the Main Menu screen

From the UPS: Turn load OFF from the display

select Status and scroll down to Status of

on the UPS to be isolated via Control–Turn

actual redundancy: n+ in order to check that

Load off–Yes, turn Load off.

the remaining UPS(s) will be able to carry the

 

load when one UPS is isolated.

 

From the external MBP: Check that the output lamp (Q002) of the UPS to be isolated is lit.

From the external MBP: Turn the input switch (Q001) connected to the UPS you want to isolate to position “0” (OFF) .

From the UPS: Disconnect the batteries in the UPS which you want to isolate by pulling them out to the red disconnect line.

From the external MBP: Turn the output switch (Q002) connected to the UPS you want to isolate to position “0” (OFF).

From the XR Enclosure(s) (if available): Set the DC disconnect switch (if available) on the XR Enclosure to the OFF position.

From the XR Enclosure(s) (if available): Disconnect the batteries by pulling them out to the red disconnect line.

Parallel system – turning the isolated UPS into normal operation.

From the external MBP: Turn the input switch (Q1) connected to the UPS you want to turn into normal operation to position “1” (ON).

From the XR Enclosure(s) (if available): Connect the batteries by pulling them in.

From the external MBP: Turn the output

switch (Q002) connected to the UPS you want to turn into normal operation to position “I”

(ON).

From the UPS: Press ESC two times to get back to the Overview Screen.

From the UPS: Connect the batteries by pulling them in.

From the XR Enclosure(s) (if available): Set the DC disconnect switch (if available) on the XR Enclosure to position ON.

From the UPS: Turn load ON from the display on the UPS you want to turn into normal operation via Control–Turn Load on–Yes, turn Load on.

From the UPS: On the Overview Screen, check that the load percentage of the UPS units is approximately the same.

18

Smart-UPS® VT 10-40 kVA 400V, 208V, 200V – Operation

990-2282A-001

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APC VT manual Total power off isolating one UPS in a parallel system