6739380EN/JC - Page 41
UPS IMPOSED
TRANSFER DISABLE !
Cannot transfer the load to Main 2 due
to:
◗ transfer conditions not satisfied;
◗ UPS operating on an independent
frequency;
◗ UPS operating with current limitation;
◗ internal fault;
◗ auxiliary control inhibits switching to
Mains 2.
Measurement system
Single-unit or modular UPS
Frequency converter
Static Switch Cubicle
The "Monitor" system displays a
number of input and output
measurements at different points in the
system.
◗ Mains 1
◗◗ phase-to-phase voltages,
◗◗ currents of the three phases,
◗◗ frequency;
◗ Mains 2
◗◗ phase-to-neutral voltage,
◗◗ phase-to-phase voltages,
◗◗ frequency;
◗ battery
◗◗ voltage,
◗◗ charge or discharge current,
◗◗ remaining battery time (calculated for
each UPS);
◗ inverter output
◗◗ phase-to-neutral voltage,
◗◗ phase-to-phase voltages,
◗◗ currents of the three phases,
◗◗ frequency,
◗◗ active and apparent power,
◗◗ ratio peak current / rated current rms;
◗ total load
◗◗ phase-to-neutral voltage,
◗◗ phase-to-phase voltages,
◗◗ currents of the three phases,
◗◗ frequency,
◗◗ active and apparent power;
◗ option
◗◗ battery temperature.
Note:
Frequency converters without batteries
are not concerned by the battery
measurements. The displayed battery
voltage corresponds to the DC voltage
at the RC output.
mains 1
load
mains 2
Q1
Q5N
QF1
Q3BP
Q4S
K3N
inverter
I - P
mains 2
U - F
charger
U - I - F
battery
U - I
inverter
U - F
load
U - I - F - P
mains 1
common
load
Q1
Q5N
QF1
K3N
inverter
I - P
charger
U - I - F
battery
U - I
inverter
U - F
load
U - I - F - P
RCIB line(s)
load
mains 2
Q5N
Q3BP
Q4S
mains 2
U - F
load
U - I - F - P
K2S
"Monitor" alphanumeric display (cont.)
