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WARNING: Disconnect primary power prior to servicing.
Overall System Theory
4.4 Power Supply Block Diagram Description
There are two different types of power supplies in the transmitter, the PA Power
Supply and the Low Voltage Power Supply.
4.4.1 PA Power Supply
There are three power supply configurations available for the Z2 transmitter:
• 3-Phase 3 wire (198-250VAC)
• 3-Phase 4 wire (342-432VAC)
• Single Phase (198-250VAC)
The supplies are very much alike operationally. The 3-Phase 3 wire and 4 wire
supplies have all of the same components, but have a different wiring harness. The
PA power supplies, whether 3-Phase or Single Phase, are regulated by reliable tap
switching techniques which provide excellent efficiency, while avoiding the power
line harmonic problems associated with switching supplies. The regulation range is
48-54Vdc at 2Vdc per tap.
4.4.1.1 3-Phase Power Supply
The transmitter has one power supply for the standard Z2 and 2 power supplies for
the Z2R (Redundant Package). These are designated PS1 (and PS2 for the Z2R).
Figure 4-7 shows the placement of each of the power supplies and connection points
for installation or removal of the supplies.
Figure 4-7 Power Supply Locations, Top View
Standard Z2, PS1
Z2R, PS1 and PS2
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