Completing The Test; Thermal Overload Protection, One Time Constant, Celsius/Fahrenheit Lcpttr/Lfpttr; Measuring The Operate And Time Limit Of Set Values - ABB Relion 670 Series Commissioning Manual

1MRK 511 403-UEN E
The expected value depends on whether definite time
selected.
4. Continue to test another function or complete the test by setting the test mode to
Residual overvoltage release and protection
Procedure
1. Measure that the operate voltage is equal to the
The function activates the START and STUN signals.
2. Measure the operate time by injecting a voltage 1.2 times set
3. Compare the result with the set
4. Inject a voltage 0.8 ·
function at the chosen angle.
5. Increase the voltage until the directional function is released.
6. Compare the measured value with the set
11.4.6.2

Completing the test

continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
11.4.7 Thermal overload protection, one time constant, Celsius/
Fahrenheit LCPTTR/LFPTTR
Prepare the IED for verification of settings as outlined in section
section
Check that the input logical signal BLOCK is logical zero and that on the local HMI, the logical
signal TRIP, START and ALARM are equal to logical zero.
11.4.7.1

Measuring the operate and time limit of set values

Testing the protection without external temperature compensation (NonComp)
1. Quickly set the measured current (fault current) in one phase to about 300% of
minimise the trip time), and switch the current off.
2. Reset the thermal memory on the local HMI under Main menu/Reset/Reset
temperature/ThermalOverload1TimeConst(PTTR,26)/LFPTTR:x, Main menu/Reset/
Reset temperature/ThermalOverload1TimeConst(PTTR,26)/LCPTTR:x,
3. Switch the fault current on and take note of the temperature, available on the local HMI
under Main menu/Test/Function status/Current protection/
ThermOverLoad1TimeConst(PTTR,26)/LFPTTR:x/TEMP, Main menu/Test/Function
status/Current protection/ThermOverLoad1TimeConst(PTTR,26)/LCPTTR:x/TEMP,
4. Check the time until the actual temperature TEMP has reached the
during injection.
Monitor the signal ALARM until it appears on the corresponding binary output or on the
local HMI.
5. Measure the LCPTTR/LFPTTRprotection trip time.
Use the TRIP signal from the configured binary output to stop the timer.
6. Take the TEMP readings.
Compare with the setting of
7. Activate the BLOCK binary input.
The signals ALARM, START and TRIP should disappear.
8. Reset the BLOCK binary input.
Bay control REC670
Commissioning manual
UNRel> and a current high enough to operate the directional
"Preparing for test" in this chapter.
© Copyright 2017 ABB. All rights reserved
UN> setting.
tUN operate value.
UNRel> operate value.
TripTemp .
Testing functionality by secondary injection
tINNonDir or inverse time was
UN> operate value.
TESTMODE setting to Off .
"Requirements" and
AlarmTemp level
Section 11
Off .
SEMOD175060-131 v6
SEMOD175060-148 v4
M14950-2 v7
M14950-8 v3
M14950-10 v10
IRef (to
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