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UMG 806www.janitza.com
4. Structure of the device 22
4. 1 Front panel and display 22
4. 2 Front view / side view 24
4. 3 Identification of the device (rating plate) 25
5. Mounting 26
5. 1 Installation location 26
5. 2 Mounting orientation and attachment 26
6. Grid systems 27
7. Installation 28
7. 1 Nominal voltages 28
7. 1. 1 Three-phase 4-conductor network 28
7. 1. 2 Three-phase 3-conductor network 29
7. 2 Disconnect switch 30
7. 3 Supply voltage 30
7. 4 Voltage measurement 31
7. 4. 1 Overvoltage 31
7. 4. 2 Mains frequency 31
7. 5 Current measurement 32
7. 5. 1 Measuring variants 33
7. 5. 2 Summation current measurement 34
7. 5. 3 Ammeter 34
7. 6 Residual current measurement (RCM) 34
7. 6. 1 Current direction of the residual current transformers 35
7. 6. 2 Residual current transformer example 35
7. 6. 3 Connection example - Residual current monitoring 36
7. 7 Temperature measurement 37
7. 8 RS-485 interface 38
7. 8. 1 Shielding 39
7. 8. 2 Termination resistors/Termination 39
7. 8. 3 Bus structure (bus segment) 40
7. 9 Digital output 41
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