information based on the gas pressure in the
circuit breaker is used as input signals to the
function. In addition, the function generates
alarms based on received information.
Insulation liquid monitoring function SSIML
Insulation liquid monitoring function SSIML is
used for monitoring the circuit breaker condition.
Binary information based on the oil level in the
circuit breaker is used as input signals to the
function. In addition, the function generates
alarms based on received information.
Circuit breaker monitoring SSCBR
The circuit breaker condition monitoring function
SSCBR is used to monitor different parameters of
the circuit breaker. The breaker requires
maintenance when the number of operations has
reached a predefined value. The energy is
calculated from the measured input currents as a
sum of I
y
t values. Alarms are generated when the
calculated values exceed the threshold settings.
The function contains a blocking functionality. It is
possible to block the function outputs, if desired.
11. 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.
12. Human Machine interface
Local HMI
IEC12000175 V1 EN
Figure 4. 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 is simple and easy to understand. The
whole front plate is divided into zones, each with
a well-defined functionality:
• Status indication LEDs
• Alarm indication LEDs which can indicate
three states with the colors green, yellow
and red, with user printable label. All LEDs
are configurable from the PCM600 tool
• Liquid crystal display (LCD)
• Keypad with push buttons for control and
navigation purposes, switch for selection
between local and remote control and reset
• Five user programmable function buttons
• An isolated RJ45 communication port for
PCM600
13. Basic IED functions
Self supervision with internal event list
The Self supervision with internal event list
(INTERRSIG and SELFSUPEVLST) function reacts
Breaker protection REQ650
1MRK 505 283-BEN -
Product version: 1.2
26 ABB
To Next Page
Loading...
