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. For proper functioning
of the circuit breaker, it is essential to monitor the
circuit breaker operation, spring charge indication,
breaker wear, travel time, number of operation
cycles and accumulated energy. The energy is
calculated from the measured input currents as a
sum of I
^
2 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
ANSI12000175 V1 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 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
Bay control REC650 ANSI
1MRK 511 265-BUS B
Product version: 1.2
30 ABB
To Next Page
Loading...
