Table of Contents
Version: A.02
Product Description ENS31
Page 3 of 20
Issue: 20.09.2005
1
Purpose of the Product..........................................................4
2
System Description ................................................................5
2.1
Principles of functioning..................................................5
2.2
LCD displays and LEDs..................................................6
2.3
Connections ...................................................................7
3
Behaviour of the Isolation Unit..............................................8
3.1
General information........................................................8
3.2
Fluctuations in the mains power supply..........................8
3.3
Deviation of the mains power frequency.........................9
3.4
Impedance jumps ...........................................................9
3.5
Influence of isolation units on each other .....................10
3.6
Optimised impedance measurement process ..............10
3.7
Automatic calibration of the impedance measurement.11
3.8
Automatic adaptation of switching thresholds to the
mains power conditions ................................................12
3.9
Automatic synchronisation / limitation of signal strength
in the case of frequent use of the ENS .........................13
4
Installation.............................................................................14
4.1
Mechanical installation .................................................14
4.1.1
Transport and unpacking.............................14
4.1.2
Conditions for installation ............................14
4.1.3
Preparing the electrical/meter cabinet .........15
4.1.4
Mounting on the top hat rail .........................15
4.2
Electrical connections...................................................16
4.2.1
Basic configuration ......................................16
4.2.2
Demands of the switching elements ............16
4.2.3
Circuitry .......................................................17
5
Advantages for the Customer .............................................19
6
Technical Data ......................................................................20
