8
= Key1
= Key 2
= Key 3
= Max. value or consumption = Min. value or supply
Hints for installation
Supply voltage
A supply voltage is necessary for the operation of
the UMG 505. The kind and dimension of the
required supply voltage is noted on the type plate.
The supply voltage is connected to the clamps 14
and 15. Between supply voltage (terminals 14, 15)
and ground (PE) a maximum voltage of 300VAC
may occur.
Higher voltage between supply voltage and ground
(PE) can destroy the UMG505. To avoid
overvoltage, the supply voltage should be earthed.
Measuring voltage
The UMG505 is suitable for measurement of
alternating voltage up to 500VAC against ground
and 870VAC between the outer conductors. The
wiring must be suitable for voltage up to 500VAC
against ground and 870VAC between the outer
conductors as well.
Attention!
The UMG505 is not suitable for measurement
of direct current voltage.
Voltage over 500VAC against ground must
be connected via voltage transformers.
For voltage measurement via
two voltage
transformers, the „Aron connection“ must be
set in configuration mode of the UMG 505.
The wires for voltage measurement of the
UMG 505 must be protected by an
overcurrent fuse.
Attention!
- The connection wires of the supply voltage
must be suitable for rated voltage up to
300VAC against ground.
- The supply voltage must be protected by a
fuse. The fuse must be in the range of
4A up
to 10A
.
- A switch or power switch for the supply
voltage must be provided within the building
installation.
- The switch must be near the device and
easy to reach by the user.
- The switch must be marked as a separation
for the device.
- Please ensure before connecting the supply
voltage, that voltage and frequency match the
statements on type plate!
- The device may be operated with earthed
housing only!
- Cables with sigle soldered wires cannot the
connected via screw terminals
!
- The screw terminals may be plugged in
voltage free condition only.
- Only screw clamps with the same pole
number and the same colour may be
connected.
- The supply voltage for the UMG 505 may
not be taken from voltage transformers.
Switching procedures on medium voltage side
can lead to short duration overvoltage, which
can destroy the supply voltage input of the
UMG 505.
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