34006451EN/AC - Page 14
Installation
Diagram for a frequency converter without batteriesExample of a 2 parallel UPS rectifier-invert ers with SSC

Fig. 12

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).

mains 1 inverter
rectifier
charger
load
Q1 Q5N
rectifier-inverter cubicle
earth
load
Q5N
Static Switch Cubicle
static
switch

mains 2

earth
Q3BP
Q4S

mains 1

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

mains 1

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