ABB RET670 Commissioning Manual

11.13.2.1 Testing the liquid medium supervision for level alarm and level lockout
conditions
1. Connect the binary inputs to consider liquid level to initiate the alarms.
2. Consider the analogue level input SENLEVEL and set SENLEVEL to a value lower
than LevelAlmLimit or activate binary input signal SENLVLALM, check that outputs
LVLALM and ALARM are activated after a set time delay of tLevelAlarm.
3. Liquid level lockout input SENLVLLO can be used to set LVLLO.
4. Also, reduce the liquid level input below LevelLOLimit or activate the binary input
signal SENLVLLO, check that LVLLO signal after a set time delay of
tLevelLockOut.
5. Activate BLOCK binary input and check that the outputs LVLALM, LVLLO, ALARM
and LOCKOUT disappears.
6. Reset the BLOCK binary input.
7. Make sure that level lockout condition exists and then activate the reset lock out
input RESETLO and check that the outputs PRESLO and LOCKOUT reset.
11.13.2.2 Testing the liquid medium supervision for temperature alarm and
temperature lock out conditions
1. Consider the analogue temperature input SENTEMP and set SENTEMP to a value
higher than TempAlarmLimit, check that outputs TEMPALM and ALARM are
activated after a set time delay of tTempAlarm.
2. Temperature lockout input SETTLO can be used to set TEMPLO signal.
3. Also, increase further the temperature input above TempLOLimit, check that the
outputs TEMPLO and LOCKOUT appears after a set time delay of tTempLockOut.
4. Activate BLOCK binary input and check that the outputs TEMPALM, TEMPLO,
ALARM and LOCKOUT disappear.
5. Reset the BLOCK binary input.
6. Make sure that temperature lockout condition exists and then activate the reset lock
out input RESETLO and check that the outputs TEMPLO and LOCKOUT reset.
11.13.2.3 Completing the test
Continue to test another function or end the test by changing the TestMode setting to Off.
Restore connections and settings to their original values, if they were changed for testing
purposes.
1MRK 504 165-UUS - Section 11
Testing functionality by secondary injection
Transformer protection RET670 2.2 ANSI 275
Commissioning manual

ABB RET670 Specifications

General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24