System description
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3. System description
3.1
Properties
3.1.1
Typical applications
Insulation fault location in DC IT systems
Main and control circuits in industrial installations and ships
Diode-decoupled DC IT systems in power stations
3.1.2
Standards
The standard DIN VDE 0100-410:2007-06; IEC 60364-4-41: 2005-12 re-
quires for unearthed power supply systems (IT systems) that a first fault
is to be eliminated with the shortest practicable delay. EDS systems al-
low fast localisation of insulation faults.
3.1.3
System versions
Insulation fault evaluators EDS460-DG-1 and EDS460-DG-2 differ in
their supply voltage.
3.1.4
System features
Universal system concept;
Modular design, hence easily adaptable to the individual conditions of
the system;
Measuring current transformers in various sizes and types of construc-
tion;
Communication between the components via BMS bus (two-wire);
All measuring current transformers are scanned simultaneously;
Central indication of faulty subcircuits;
Various setting options allow individual adjustments;
Connection to higher level control and visualisation systems can easily
be established.
