APC 6739380EN/JC user manual Measurement system

"Monitor" alphanumeric display (cont.)

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

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.

Single-unit or modular UPS

	Q3BP
	mains 2
	U - F
Q4S
mains 2
Q1		K3N	Q5N
mains 1				load
	QF1
charger	battery	inverter	inverter	load
U - I - F	U - I	U - F	I - P	U - I - F - P

Frequency converter

Q1		K3N	Q5N	common
mains 1
				load
	QF1
charger	battery	inverter	inverter	load
U - I - F	U - I	U - F	I - P	U - I - F - P

Static Switch Cubicle

mains 2 U - F

Q4S

mains 2

RCIB line(s)

load

U - I - F - P

Q3BP

K2S

Q5N

load

6739380EN/JC - Page 41