APC Smart-UPS VT 400 Technical Information download pdf (Page 20)

14 Smart-UPS® VT 10-40 kVA 400V, 208V, 200V – Operation 990-2282C-001

Parallel System

How to turn into external maintenance bypass

Warning: In bypass operation the batteries are still charged. If a total power off is required,

the load must be off and the batteries must be pulled out to the red disconnect line, see the

section How to perform a total power off.



From the Overview Screen, press ENTER.



Go to Control by using the UP/DOWN

navigation keys and press

ENTER.



Go to UPS into Bypass by using the UP/DOWN

navigation keys and press

ENTER.



Go to YES, UPS into Bypass by using the UP/

DOWN

navigation keys and press ENTER.



From the UPS: Check that all UPS units are in bypass on each of the displays. The yellow bypass

LED is lit on each UPS unit.



From the external Maintenance Bypass Panel (MBP): Check that the bypass lamp indicator (H3) is

lit at

Q3.



From the external MBP: Turn the bypass switch (Q3) to position “|” (ON).



From the external MBP: Check that the lamp indicator of the output isolation breaker (H4) at Q4 is

lit.



From the external MBP: Turn the output isolation breaker (Q4) to position “O” (OFF). The UPS

system is now in external maintenance bypass with the batteries still powered.



Note! If you need to turn the UPS units completely OFF, proceed with steps 11–18.



From the UPS: Turn OFF each UPS unit from the display via Control – Turn Load Off – Yes, Tu r n

Load Off.

Chrg 100%

Load 000%

xxxVin 000Vout x0Hz

Runtime: 0hr 0m

Press

Control

Status

Setup

Logging

Display

Diags

Help

Use

Press

Diags

Control

Status

Setup

Logging

Display

Help

Press

Diags

UPS into Bypass

Do Self Test

Simulate Power Fail

Start Runtime Cal

Use

Press

Confirm:

UPS into Bypass

NO, ABORT

YES, UPS into Bypass

Use Press

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APC Smart-UPS VT 400 Technical Information Page 20

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