Monitored Data - ABB RES670 Technical Manual

1MRK 511 408-UUS A
16.3.6
16.3.7
Phasor measurement unit RES670 2.2 ANSI
Technical manual

Monitored data

Table 407: SSIML Monitored data
Name Type
LEVEL REAL
TEMP REAL
Operation principle
Liquid medium supervision SSIML (71) is used to monitor the oil level in the
transformer. Binary inputs of oil level SENLVLALM, SENLVLLO and oil level signal
SENLEVEL are taken into account to initiate the alarm LVLALM and the lockout
LVLLO. When SENLEVEL is less than LevelAlmLimit or binary signal from
transformer SENLVLALM is high, the oil level indication alarm LVLALM will be
initiated. Similarly, if oil level input SENLEVEL is less than LevelLOLimit or binary
signal from transformer SENLVLLO is high, the oil level indication lockout LVLLO
will be initiated.
There may be sudden change in oil level for a very small time, for which the function
need not to initiate any alarm. To avoid the intermittent alarm, two time delays
tLevelAlarm or tLevelLockOut have been included. If the oil level goes below the
settings for more than these time delays, the corresponding alarm LVLALM or lockout
LVLLO will be initiated. The SETLLO binary input is used for setting the liquid level
lockout LVLLO. The LVLLO output retains the last value until it is reset by using the
binary input RESETLO. The binary input BLKALM can be used for blocking the
alarms, and the BLOCK input can block both alarms and the lockout indication.
Temperature of the medium is available from the input signal of temperature. The
signal is monitored to detect high temperature.
When temperature input SENTEMP is above TempAlarmLimit, temperature alarm
TEMPALM will be initiated. Similarly, if temperature input SENTEMP is above
TempLOLimit, temperature lockout TEMPLO will be initiated.
There may be sudden change in temperature of the medium for a very small time, for
which the function need not to initiate any alarm. To avoid the intermittent alarm, two
time delays tTempAlarm or tTempLockOuthave been included. If the temperature goes
above the settings for more than these time delays, the corresponding alarm
TEMPALM or lockout TEMPLO will be initiated. The SETTLO binary input is used
for setting the temperature lockout TEMPLO. The TEMPLO output retains the last
value until it is reset by using the binary input RESETLO. The binary input BLKALM
Values (Range) Unit
- -
- deg
Section 16
Monitoring
PID-6951-MONITOREDDATA v5
Description
Level service value
Temperature of the insulation
medium
GUID-F4340B59-90D0-4EA7-9FD8-F21D425C884A v7
531