APC 9000 Power circuit wiring diagrams, Diagram for a frequency converter with batteries

Installation

2.5 Power circuit wiring diagrams

The single-wire diagrams for typical UPS installations are given in figures 9 to 15. The heavy lines represent the cables that must be connected

(see the table in the previous chapter for the required cross-sectional areas of the cables). Note:

–for frequency converters, the input and output frequencies may be different (50 or 60 Hz);

–for frequency converters without batteries, ignore the battery cubicles and the + and - cables shown in the diagram.

Special case:

The UPSs can be optionally supplied with the neutral conductor not interrupted by switches Q4S, Q3BP and Q5N.

Diagram for a single-unit or single modular UPS with common Mains 1 and 2

mains 2

mains 1

earth

rectifier-inverter cubicle

			Q3BP
	Q4S	static		earth
		switch
Q1	rectifier	inverter	Q5N	load
	charger

frames interconnections for earthing

battery cubicle	QF1 +	-	+	-	other battery
beside the					cubicles (if	earth
rectifier-inverter cubicle					applicable)

Fig. 9

Diagram for a single-unit or single modular UPS with common Mains 1 and 2

rectifier-inverter cubicle

					Q3BP
mains	mains 2					earth
	input		Q4S	static
				switch
	mains 1	Q1	rectifier	inverter	Q5N	load
			charger
	input

earth

battery cubicle	QF1 +
beside the
rectifier-inverter cubicle

-

frames interconnections for earthing

+ -	other battery
	cubicles (if
	applicable)

earth

Fig. 10

Diagram for a frequency converter with batteries

mains 1

earth

rectifier-inverter cubicle
Q1	rectifier	inverter				Q5N		load
	charger
									earth
					frames interconnections for earthing
battery cubicle		QF1	+	-	+	-	other battery
beside the							cubicles (if		earth
rectifier-inverter cubicle							applicable)

Fig. 11

34006451EN/AC - Page 13