ABB Relion 670 series - Completing the Test; Loss of Excitation LEXPDIS; Verifying the Settings

0.2 £ f(Ucos) £ 8Hz
AND
AND
START
Z cross line ZA - ZC
Z cross line ZC - ZB
AND
AND
ZONE1
ZONE2
Counter
a
b
a ³ b
AND
TRIP1
Counter
a
b
a ³ b
AND
TRIP2
OR
TRIP
IEC07000100_2_en.vsd
Imin > 0.10 IBase
Umax < 0.92 UBase
d ³ StartAngle
N1Limit
d £ TripAngle
N2Limit
IEC07000100 V2 EN
Figure 91: Logic diagram of the pole slip protection PSPPPAM
15.5.2.2 Completing the test
Continue to test another function or end the test by changing the Test mode setting
to Off. Restore connections and settings to their original values, if they were
changed for testing purposes.
15.5.3 Loss of excitation LEXPDIS
Prepare the IED for verification of settings outlined in section "Overview" and
section "Preparing for test" in this chapter.
15.5.3.1 Verifying the settings
The test is done by means of injection of three phase current and three phase
voltage from a modern test device. This test device shall be able to give voltage
and current corresponding to the set apparent impedance.
1. Feed the IED with current and voltage corresponding to the apparent
impedance: Test #1, as shown in figure
92. Read the analog outputs for R and
1MRK 502 029-UEN A Section 15
Verifying settings by secondary injection
165
Installation and commissioning manual