janitza UMG 604-PRO, Руководство пользователя и технические данные

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UMG 604-PRO
16
6. 3 Measured voltage
The device is designed to measure AC
voltage in 300 V networks, in which
overvoltages of category III can occur.
The device can only determine measured values
if measured voltage of >10 Veff is present on at
least one voltage measurement input.
c c
WARNING!
Risk of injury due to electric
voltage!
Severe bodily injuries or death can occur
due to a failure to observe the connection
conditions for the voltage measurement
inputs.
Therefore, note the following:
• Do not use the device for voltage
measurement in SELV circuits.
• Connect voltages that exceed the
permissible network rated voltages via
a voltage transformer.
• The voltage measurement inputs on
the device are dangerous if touched!
• Install a disconnector as described
in “6. 1 Disconnectors”.
c c
CAUTION!
Malfunction due to
incorrect connection
If the device is connected incorrectly,
incorrect measured values may be returned.
Therefore, note the following:
•
Measured voltages and currents must
derive from the same network.
•
The device is not suitable for
measuring DC voltage.
L3
N
L1
L2
Disconnectors
Fig.23.1 Connection example: Voltage measurement via
short circuit-proof measurement wires
Note the following when selecting the
measurement wires:
• Use measurement wires that are suitable
for 300 V to earth and 520 V conductor to
conductor.
• Fuse the normal measurement wires using
an overcurrent protection device.
• Route normal short circuit-proof
measurement wires via a disconnector.
• Connect the voltages higher than 300 V to
earth using voltage transformers.
L
N
Fig. Voltage measurement input with connected phase L
and neutral conductor N