Station battery supervision
SPVNZBAT
The station battery supervision function
SPVNZBAT is used for monitoring battery
terminal voltage.
SPVNZBAT activates the start and alarm
outputs when the battery terminal voltage
exceeds the set upper limit or drops below the
set lower limit. A time delay for the overvoltage
and undervoltage alarms can be set according
to definite time characteristics.
In the definite time (DT) mode, SPVNZBAT
operates after a predefined operate time and
resets when the battery undervoltage or
overvoltage condition disappears.
Insulation gas monitoring function
SSIMG
Insulation gas monitoring function SSIMG (63)
is used for monitoring the circuit breaker
condition. Binary 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
(71) 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. 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.
Breaker protection REQ650 ANSI
1MRK 505 269-BUS -
Product version: 1.1
Issued: April 2011
26
ABB
