Elmo PSS 6U, PSS 3U manual Wiring Diagrams, VAC min VAC 0.9 x VAC max

Elmo PSS User Guide	Installation
MAN-PSSUG (Ver. 3.01)

3-2

The AC power supply can be of any voltage in the range defined in the technical specifications (section 2.4). It must be able to deliver power to the amplifiers (including peak power), without significant drops. A three-phase supply is always recommended whenever possible, in order to provide better DC bus voltage stability (low voltage ripple) under high load conditions.

The recommended AC voltage is:

1.2 x VAC (min) < VAC < 0.9 x VAC (max)

With a single-phase supply, a voltage drop due to loading is expected. The magnitude of the voltage drop depends on the load current, stiffness of the power source and the total bus capacitance.

3.2.3Wiring Diagrams

3.2.3.1 Isolated AC Supplies

Isolating transformer

Fuse

Fuse

Fuse

AC

AC PSS

AC

+Vs

DC power common

Heatsink

Figure 3-1:Isolated PSS Wiring

Ground the DC power common.