Dewetron DEWE3-PA8, Техническое справочное руководство

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38
MAIN SYSTEM
Power supply
The DEWE3-PA8 comes with two integrated power supplies. The reason for this is that some current sensors react
extremely sensitive to power losses. To avoid that, an additional power supply was added to power the sensors, even
when the mains power supply of the measurement device has a failure. It is possible to connect the additional supply
to a second source (e.g. UPS) to ensure the permanent supply of sensors, within a very unstable power grid.
Mains power supply
Mains power supply
Redundant power supply
for sensor supply
Redundant power supply for sensor supply
100 to 240 V
AC
(max. 90 to 264 V
AC
)
47 to 63 Hz
600 W
VOLTAGE
FREQUENCY
POWER
V
Hz
P
100 to 240 V
AC
(max. 90 to 264 V
AC
)
47 to 63 Hz
200 W
VOLTAGE
FREQUENCY
POWER
V
Hz
P
When switching off the main power supply, the power supply for the sensors will also be shut off. To avoid that, the
DEWE3-PA8 comes with an independent, redundant power supply for sensor supply.
Figure 1: Mains power supply for the entire instrument
Figure 1: Redundant power supply for sensor supply