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UMG 104
General Information 4
Protected trademarks 4
Meaning of the symbols used 5
Inspection on receipt 6
Scope of supply 7
Available accessories 7
Notes on Use 8
Product Description 10
Intended use 10
UMG104 features 11
Methods of measurement 12
Operating concept 12
GridVis programming software 13
Three-phase 4-wire systems 14
Three-phase 3-wire systems 16
Use 18
Key functions 18
Concealed key (service) 18
Display mode 19
Programming mode 20
Display password 21
Installation 22
Installed position 22
Power supply voltage 23
Current measurement 24
Ammeter 26
Direct measurement 28
Voltage measurement 29
Interfaces 32
RS485 34
RS485 profibus DP V0 slave 36
Digital inputs and outputs 38
Temperature measurement input 42
Putting into Service 43
Applying the power supply voltage 43
Frequency measurement 43
Applying the measuring-circuit voltage 44
Phase sequence 45
Applying the measuring-circuit current 45
Checking the energy measurement 46
Configuration 47
Current transformer ratio 47
Current measurement connection options 48
Voltage transformer ratio 49
Voltage measurement connection options 50
Interfaces 51
RS232 51
RS485 51
Profibus (optional) 52
Recordings 55
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