t(s)
Operate time in seconds
k1
Settable time multiplier of the function for step 1
U
Measured voltage
U1>
Set start voltage for step 1
For example, if the measured voltage jumps from 0 to 1.2 times the set start voltage level
and time multiplier k1 is set to 0.05 s (default value), then the TR1 and TRIP signals
operate at a time equal to 0.250 s ± tolerance.
8.
The test above can be repeated to check the inverse time characteristic at different
voltage levels.
9.
Repeat the above-described steps for step
.
7.4.2.2
Completing the test
M13806-43 v6
Continue to test another function or end the testing by setting the parameter
TestMode to Off
under Main menu/Tests/IED test mode/TESTMODE:1. If another function is tested, then set
the parameter
Blocked to No under Main menu/Tests/Function test modes/Voltage/
OV2PTOV(59,2U>)/OV2PTOV:1 for the function, or for each individual function in a chain, to be
tested next. Remember to set the parameter
Blocked to Yes, for each individual function that
has been tested.
7.4.3
Two step residual overvoltage protection ROV2PTOV
SEMOD54358-3 v6.1.1
Prepare the IED for verification of settings as outlined in section
.
Values of the logical signals for ROV2PTOV are available on the local HMI under Main menu/
Tests/Function status/Voltage/ROV2PTOV(59N,2UN>)/ROV2PTOV:1. The Signal Monitoring
in PCM600 shows the same signals that are available on the local HMI.
7.4.3.1
Verifying the settings
SEMOD54358-35 v7
1.
Apply the single-phase voltage either to a single-phase voltage input or to a residual
voltage input with the start value below the set value
U1>.
2.
Slowly increase the value until ST1 appears.
3.
Note the operate value and compare it with the set value.
4.
Decrease the voltage slowly and note the reset value.
5.
Set and apply about 20% higher voltage than the measured operate value for one phase.
6.
Measure the time delay for the TR1 signal and compare it with the set value.
7.
Check the inverse time delay by injecting a voltage corresponding to 1.2 × U1>.
For example, if the inverse time curve A is selected, the trip signals TR1
and TRIP operate after a time corresponding to the equation:
t s
k
U
U
( )
=
>
−
1
1
1
IECEQUATION2429 V1 EN-US
(Equation 19)
Section 7
1MRK 505 293-UEN B
Testing functionality
68
Breaker protection REQ650
Commissioning manual
© Copyright 2013 ABB. All rights reserved
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