ABB Relion 670 Series RES670, Техническое руководство

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There may be sudden change in oil level for a very small time, for which the function need
not to initiate any alarm. That is why two time delays
tLevelAlarm or tLevelLockOut have
been included. If the oil level goes below the settings for more than these time delays, then
only the corresponding alarm LVL_ALM or lockout LVL_LO will be initiated. The
SET_L_LO binary input is used for setting the gas pressure lockout. The LVL_LO output
retains the last value until it is reset by using the binary input RESET_LO. Hysteresis type
comparators have been used with the setting for relative and absolute hysteresis. The
binary input BLK_ALM 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 TEMP is greater than TempAlarmLimit , then temperature alarm
TEMP_ALM will be initiated. Similarly, if temperature input TEMP is greater than
TempLOLimit , then TEMP_LO 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. That is why two time delays
tTempAlarm
or tTempLockOut have been included. If the temperature goes above the settings for more
than these time delays, then only the corresponding alarm TEMP_ALM or lockout
TEMP_LO will be initiated. The SET_T_LO binary input is used for setting the
temperature lockout. The TEMP_LO output retains the last value until it is reset by using
the binary input RESET_LO. Hysteresis type comparators have been used with the setting
for relative and absolute hysteresis. The binary input BLK_ALM can be used for blocking
the alarms, and the BLOCK input can block both alarms and the lockout indication.
16.3.6 Technical data
Table 420: SSIML(71) Technical data
Function Range or value Accuracy
Oil alarm level 1.00-100.00 ±10.0% of set value
Oil lockout level 1.00-100.00 ±10.0% of set value
Temperature alarm level -40.00-200.00 ±2.5% of set value
Temperature lockout level -40.00-200.00 ±2.5% of set value
Time delay for oil alarm (0.000-60.000) s ±0.2% or ±250ms whichever is
greater
Reset time delay for oil alarm (0.000-60.000) s ±0.2% or ±250ms whichever is
greater
Time delay for oil lockout (0.000-60.000) s ±0.2% or ±250ms whichever is
greater
Table continues on next page
Section 16
1MRK 511 365-UUS A
Monitoring
524 Phasor measurement unit RES670 2.1 ANSI
Technical manual