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EA Technology
3.7
Power Supply Operation
There are two formats of Power Supply available, both units have equivalent functionality with the
key difference being there supply voltage. The standard unit is powered by 110-230Vac whilst the
optional unit is powered by 48VDC.
3.7.1 Standard Power Supply (110-230Vac)
The Power Supply provides power to the Hub Unit, which in turn powers the Nodes, it also supplies
a mains phase reference signal.
There is no switch on the hub, and as such it should only be connected to a switched mains socket.
Do not remove the yellow and black Power In plug from the Power Supply without switching off the
mains first.
A Mains Power green indicator on the front of the Power Supply is illuminated when the Power Supply
is connected to the mains.
WARNING: Mains Power indicator is connected to the 100mA fuse. If the
indicator is off, switch off the Power Supply and check the 100mA fuse. If the
fuse has blown, the Power Supply could still be active even if the indicator is off.
The Power Supply is equipped with 5 fuses on the bottom panel (see Figure 6). The mains input is
double pole fused, protecting both the live and neutral lines. There is also a small fuse to protect
the phase reference transformer and the indicator LED. The power out to the Hub Unit has two
fuses, one on the 48V line out to the UltraTEV Nodes, one on the 12V to power the Hub Unit.
Figure 6: Power Supply bottom panel showing fuses
UltraTEV Monitor
Operating Manual
TM
15
2178L014
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