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Transformer protection RET650
Product version: 1.1
The function contains a blocking
functionality. It is possible to block the
function outputs, if desired.
12. Metering
Pulse counter logic PCGGIO
Pulse counter (PCGGIO) function counts
externally generated binary pulses, for
instance pulses coming from an external
energy meter, for calculation of energy
consumption values. The pulses are captured
by the BIO (binary input/output) module
and then read by the PCGGIO function. A
scaled service value is available over the
station bus.
Function for energy calculation and
demand handling ETPMMTR
Outputs from the Measurements (CVMMXN)
function can be used to calculate energy
consumption. Active as well as reactive
values are calculated in import and export
direction. Values can be read or generated as
pulses. Maximum demand power values are
also calculated by the function.
26
1MRK 504 127-BEN -
Issued: February 2011
13. Human Machine
interface
Local HMI
GUID-23A12958-F9A5-4BF1-A31B-F69F56A046C7 V2 EN
Figure 6. Local human-machine interface
The LHMI of the IED contains the following
elements:
• Display (LCD)
• Buttons
• LED indicators
• Communication port
The LHMI is used for setting, monitoring and
controlling .
The Local human machine interface, LHMI
includes a graphical monochrome LCD with a
resolution of 320x240 pixels. The character
size may vary depending on selected
language. The amount of characters and rows
fitting the view depends on the character size
and the view that is shown.
The LHMI can be detached from the main
unit. The detached LHMI can be wall
mounted up to a distance of five meters from
the main unit. The units are connected with
the Ethernet cable included in the delivery.
The LHMI is simple and easy to understand.
The whole front plate is divided into zones,
each with a well-defined functionality:
ABB
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