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Inhaltsverzeichnis
VMD460-NA_D00001_05_M_XXEN/01.2020
1. General instructions .................................................................................................... 7
1.1 How to use this manual ................................................................................................ 7
1.2 Technical support: service and support .................................................................. 7
1.3 Training courses ............................................................................................................... 8
1.4 Delivery conditions, warranty and liability ............................................................. 9
1.5 Inspection, transport and storage ............................................................................. 9
1.6 Warranty and liability ..................................................................................................... 9
1.7 Disposal ............................................................................................................................. 10
2. Safety instructions .................................................................................................... 11
2.1 General safety instructions ........................................................................................ 11
2.2 Work activities on electrical installations .............................................................. 11
2.3 Device-specific instructions ....................................................................................... 12
2.4 Intended use ................................................................................................................... 12
3. Functional description ............................................................................................. 13
3.1 Measurement functions .............................................................................................. 13
3.1.1 Monitoring of different system types:
1AC, 3AC, 3NAC ...................................................................................................... 13
3.1.2 Continuous monitoring of the phase voltage and
line-to-line voltage ................................................................................................ 13
3.2 Disconnection ................................................................................................................. 14
3.3 (Re)connection and
special reconnections .................................................................................................. 14
3.3.1 (Re)connection and monitoring of the conditions .................................... 14
3.3.2 Exceptions of automatic (re-)connection ...................................................... 14
3.3.3 Special reconnections .......................................................................................... 14
3.4 Protective and monitoring functions ..................................................................... 15
3.4.1 Voltage protection functions U<, U<<, U>> and U> ................................ 15
3.4.2 Frequency protection functions f<, f<<, f>> and f> ................................. 16
3.4.3 Islanding detection df/dt (ROCOF), vector shift detection ..................... 17
3.4.4 Unbalance detection ............................................................................................ 18
3.4.5 Monitoring of the tripping circuits and interface switches
by means of contact feedback .......................................................................... 18
3.4.6 Remote trip: remote disconnection via ripple-control receiver ........... 19
3.4.7 Test function for checking the tripping circuit, the interface
switch and for determining the connection times .................................... 19
3.4.8 Automatic self test ................................................................................................. 20
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