janitza UMG 604-PRO, User Manual And Technical Data

Page: 42 / 87

UMG 604-PRO
www.janitza.de
37
This section describes how to perform
configuration using the 2 buttons on the
device.
11. 1 Current transformer ratio
You can assign each of the 4 current
transformer inputs its own current
transformer ratio.
• A current transformer ratio of 5 A / 5 A is
factory-set for all 4 current transformer
inputs.
• You can program current transformers
with the same current transformer ratios
in addresses 000 and 001.
• You can program current transformers
with different current transformer ratios in
addresses 010 to 041.
• Changing the current transformer values
in addresses 000 or 001 overwrites the
contents of addresses 010 to 041 with the
current transformer values from addresses
000 and 001.
• Changing the current transformer values in
addresses 010 to 041 deletes the current
transformer values in addresses 000 and 001.
11. Configuration
Address Current transformer
values
000 L1 L2 L3 L4 (primary)
001 L1 L2 L3 L4 (secondary)
010 L1 (primary)
011 L1 (secondary)
020 L2 (primary)
021 L2 (secondary)
030 L3 (primary)
031 L3 (secondary)
040 L4 (primary)
041 L4 (secondary)
Address Connection variant
110 0 = three current
transformers.
(factory default setting)
1 = two current
transformers (Aron circuit)
11. 2 Current connection variants
The device recognises two connection
variants for current measurement.
Connection variant 0
• Measurement via 3 current transformers in
three phase 4-conductor networks.
• Measurement via 2 current transformers
in networks with the same loading.
• Measurement in single-phase 3-conductor
systems.
Connection variant 1
• Measurement via 2 current transformers
(Aron circuit ) in three-phase 3-conductor
networks.
C C
NOTE!
It is not necessary to configure
a connection schematic for
measurement input 4.