Section 2
1MRK 511 434-UEN A
SAM600 Process Bus I/O System
8
SAM600 Process Bus I/O System
Operation Manual
2.1.3
SAM600-VT for conventional voltage measurements
Figure 3: SAM600-VT module
A SAM600-VT module has four analog input measurement channels and interfaces
conventional voltage transformers with a configurable input voltage between 100V
– 125V AC (phase-phase) on the secondary interface. The measurement chain is
calibrated and temperature compensated.
The neutral voltage as provided in the IEC/UCA 61850-9-2LE stream can either be
measured or calculated as sum of the three phase values.
Binary inputs are provided to signal fuse failure and test conditions in the
IEC/UCA 61850-9-2LE stream through a corresponding quality bit in order to
allow for blocking conditions in the IEDs receiving the data stream. Three inputs
which can be wired
to the secondary contacts of MCBs are pre-assigned to signal a
fuse failure per phase. A fourth input is provided to signal a test condition in the
stream. The polarities of the binary inputs are configurable.
SAM600-VT provides two IEC 61850 access points which can be assigned for
configured for incoming (bridging) and outgoing IEC 61850-9-2LE traffic.
