APC 9000 installation manual Diagram for a frequency converter without batteries

Installation

Diagram for a frequency converter without batteries

	rectifier-inverter cubicle
mains 1		Q1
			rectifier
			charger

inverter

Q5Nload

earth

Fig. 12

Example of a 2 parallel UPS rectifier-inverters with SSC

mains 2

mains 1

earth

mains 1

earth

Static Switch Cubicle

	Q3BP		earth
Q4S	static	Q5N	load
	switch

rectifier-inverter cubicle 1 frames interconnection for earthing

								inverter 1
Q1	rectifier	inverter 1				Q5N		output
	charger
								earth
					frames interconnections for earthing
battery cubicle		QF1	+	-	+	-	other battery
beside rectifier-							cubicles (if	earth
inverter cubicle 1							applicable)
rectifier-inverter cubicle 2					frames interconnections for earthing
								inverter 2
Q1	rectifier	inverter 2				Q5N		output
	charger
								earth
					frames interconnections for earting
battery cubicle		QF1	+	-	+	-	other battery
beside rectifier-							cubicles (if	earth
inverter cubicle 2							applicable)

Fig. 13

Note:

Both the rectifier-inverter cubicles and the Static Switch Cubicle can be supplied from a common Mains, in which case there is only one upstream circuit breaker (same as the case of a single-unit UPS with a common Mains 1 and 2).

34006451EN/AC - Page 14