UMG 96-PA
/ UMG 96-PA
MID
www.janitza.com
20
Overcurrent protection device for the line
protection of the supply voltage
Recommendation for the overcurrent protection
device for line protection of the supply voltage
(depending on the device versions):
·Option 230 V --> 6 - 16 A (Char. B)
·Option 24 V --> 1 - 6 A (Char. B)
Recommendation for the maximum number of
devices on one circuit breaker depending on the
versions:
·230 V option:
For a B6A circuit breaker, a maximum of
4 devices.
For a B16A circuit breaker, a maximum of
11 devices.
·24 V option:
For a B6A circuit breaker, a maximum of
3 devices.
For a B16A circuit breaker, a maximum of
9 devices.
NOTE
The fuse is only a line protection -
is not
device
protection!
7.4 Voltage measurement
The device has 3 voltage measurement inputs
(V1 to V3) that are on the rear side of the device.
7.4.1
Overvoltage
The voltage measurement inputs are suitable for
measuring in networks in which category 600 V
CAT III overvoltages can occur (rated surge
voltage 6 kV).
7.4.2
Frequency
The device:
·requires the power frequency for the
measurement and calculation of measured
values.
·is suitable for measuring in networks in which
the power frequency of the voltage is in the
45 Hz to 65 Hz range.
The power frequency is calculated using the
phase L1 measured voltage. The sampling
frequency of the voltage and current
measurement inputs is calculated based on the
power frequency.
The frequency of the voltage power frequency
can no longer be calculated accurately while
measuring with severe voltage distortion. What
this means is that a fixed value should be
specified for the corresponding power frequency
for measured voltages with severe voltage
distortion. Voltage distortions occur, for example,
when measuring consumers that are operated
with a phase angle control. Current distortions do
not have an impact on the determined frequency.
NOTE
The MID device only supports an automatic
frequency calculation (45 -65 Hz)!
More information can be found in chapter „12.3.1
Rated frequency“ on page 35
Fig.
ConnectFon example for voltaie measurementg.
L2
L3
N
L1
1)
1)
1)
2)
2)
2)
1.)
Fuse
(UL/IEC listed)
2.)
Disconnect device
(disconnector or circuit breaker)
