ZMAZx
NDZx
PHSA
AND
OR
ZMBZx
PHSB
AND
ZMCZx
PHSC
AND
ZMABZx
PHSAB
AND
ZMLBCZx
PHSBC
AND
ZMCAZx
PHSCA
AND
OR
DIRAZx
AND
DIRBZx
AND
AND
OR
AND
AND
AND
DIRCZx
DIRABZx
DIRBCZx
DIRCAZx
AZx
PGZx
BZx
CZx
PPZx
OR
OR
OR
ANSI12000140-1-en.vsd
ANSI12000140 V1 EN-US
Figure 189: Intermediate logic
7.9.7.10 Measurement
Measurement supervision
SEMOD54417-130 v3
The protection, control, and monitoring IEDs have functionality to measure and further process
information for currents and voltages obtained from the pre-processing blocks. The number of
processed alternate measuring quantities depends on the type of IED and built-in options.
The information on measured quantities is available for the user at different locations:
• Locally by means of the local HMI
• Remotely using the monitoring tool within PCM600 or over the station bus
• Internally by connecting the analog output signals to the Disturbance Report function
Zero point clamping
GUID-4894EF16-3376-48EB-863F-9CE14487ACAB v1
Measured value below zero point clamping limit is forced to zero. This allows the noise in the input
signal to be ignored. The zero point clamping limit is a setting (
XZeroDb
where X equals Z).
Section 7 1MRK 502 066-UUS B
Impedance protection
362
Technical manual
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