ABB RELION REX640 Technical Manual page 1376

Condition monitoring functions
7.2 Motor controlled earthing switch and disconnector
supervision ESDCSSWI (ANSI 29CM)
7.2.1 Identification
Function description
Motor controlled earthing switch
and disconnector supervision
7.2.2 Function block
Figure 784: Function block
7.2.3 Functionality
The motor controlled earthing switch and disconnector supervision (ESDCSSWI)
is used for monitoring switch status, inactivity, contact travel time and operation
counter. Function can be used for condition monitoring and as indicator for
maintenance need.
7.2.4 Operation principle
The
the function is enabled and respectively "Off" means function is disabled.
The operation of ESDCSSWI is described by using a module diagram (see figure
below). All the modules in the diagram are explained in the next sections.
1376
Operation setting is used to enable or disable the function. When selected "On"
IEC 61850 IEC 60617
identification identification
ESDCSSWI ESDCCM
1MRS759142 F
ANSI/IEEE C37.2
device number
29CM
REX640
Technical Manual