APC 9000 User Manual

34006452EN/AC

 - Page 51

"Monitor" alphanumeric display

9.6 Voltage measurements  

These measurements may be accessed in two manners:

– pressing the "V" button displays the series of screens in the figure opposite;

– in "Monitor" multi-cubicle mode, pressing the ">" button when the screen already displays the voltage measurements 
of a cubicle. 

The system shifts to the voltage measurements of the next cubicle.

– Mains 2 measurements are not displayed on converters and parallel UPS with SSC;
– Mains 1 and inverter output measurements are not displayed on Static Switch Cubicles.

For installations comprising a number of modular UPSs connected in parallel, the absence of load (UPS output) voltage 

indicated on a display is only valid if it also indicated on the displays of all the other parallel-connected UPSs. Before carrying 
out any work on a UPS, always check the absence of voltage using a method complying with applicable safety rules for work 

on electrical equipment.

Direct access to the function by pressing the "V" button.

Mains 1 input phase-to-phase voltages in V rms (RC input).

Mains 2 input phase-to-neutral voltage in V rms.

Mains 2 input phase-to-phase voltages in V rms.

Inverter output phase-to-neutral voltage in V rms.

Inverter output phase-to-phase voltages in V rms.

Load phase-to-neutral voltage in V rms.

Load phase-to-phase voltages in V rms.

RCIB line(s)

load

mains 2

Q5N

Q3BP

Q4S

mains 2

U - F

load

U - I - F - P

K2S

MNS.1

V RMS

MNS.2

V RMS

U12

U23

U31

V1

V2

V3

MNS.2

V RMS

U12

U23

U31

INV.

V RMS

V1

V2

V3

U12

U23

U31

INV.

V RMS

LOAD

V RMS

V1

V2

V3

U12

U23

U31

LOAD

V RMS