Completing The Test; Voltage Differential Protection Vdcptov (60) - ABB Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
1. Apply a single-phase voltage either to a single-phase voltage input or to a residual voltage input
with the pickup value below the set value Pickup1.
2. Slowly increase the value until PU_ST1 appears.
3. Note the trip value and compare it with the set value.
4. Decrease the voltage slowly and note the reset value.
5. Set and apply a 20% higher voltage than the measured trip value for one phase.
6. Measure the time delay for the TRST1 signal and compare it with the set value.
7. Check the inverse time delay by injecting a voltage corresponding to 1.2 × Vpickup>.
( )
t s
IECEQUATION2429 V1 EN-US
( )
t s
ANSIEQUATION2429 V1 EN-US
where:
t(s)
TD1
V
Vpickup> Set pickup voltage for step 1
For example, if the measured voltage jumps from 0 to 1.2 times the set pickup voltage level and
time multiplier TD1 is set to 0.05 s (default value), then the TRST1 and TRIP signals trip at a time
equal to 0.250 s ± tolerance.
8. Repeat the test for Step 2 of the function.
11.5.3.3

Completing the test

Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.5.4

Voltage differential protection VDCPTOV (60)

Prepare the IED for verification of settings as outlined in section
for test" in this chapter.
130
For example, if the inverse time curve A is selected, the trip signals TRST1 and
TRIP trip after a time corresponding to the equation:
k 1
=
 
U
−
1
 
>
 
U 1
TD 1
=
æ ö
V
-
1
ç ÷
>
Vpickup
è ø
Trip time in seconds
Settable time multiplier of the function for step 1
Measured voltage
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1MRK 511 403-UUS Rev. K
"Requirements" and section
Bay control REC670
Commissioning manual
(Equation 25)
(Equation 26)
SEMOD54358-38 v4
SEMOD175258-3 v2
"Preparing