ABB RELION REG670 Commissioning Manual page 168

Section 12
Testing functionality by secondary injection
Operation mode 3I
1. Set the polarizing voltage to 1.2 ·
current to the set characteristic angle (
2. Inject current until the function picks up, and make sure that the operate current is equal
to the
The function activates the START and STDIRIN output.
3. Measure with angles j around
4. Compare the result with the set values, refer to figure
5. Measure the operate time of the timer by injecting a current to get two times the set
SN_> operate value.
Tinv
IECEQUATION2403 V1 EN-US
6. Compare the result with the expected value.
The expected value depends on whether definite or inverse time was selected.
7. Continue to test another function or complete the test by setting the test mode to
IEC06000652 V3 EN-US
Figure 59: Example characteristic
Non-directional earth fault current protection
Procedure
1. Measure that the operate current is equal to the
The function activates the START and STDIRIN output.
2. Measure the operate time of the timer by injecting a current of 200% of the operate
value.
3. Compare the result with the expected value.
162
and φ
0
INDir> setting for the set directional element.
Note that for operation, both the injected current and voltage must be
greater than the set values
= × ×
kSN Sref / 3 I 3 U
0 test 0 test
UNRel> and set the phase angle between voltage and
RCADir ). Note that the current lagging the voltage.
INRel> and UNRel> respectively.
RCADir +/- ROADir.
( )
j
×
cos
RCADir = 0º
ROADir = 80º
Operate area
3I
0
-3U
IEC06000652-3-en.vsd
INNonDir> setting.
1MRK 502 067-UEN B
59 for example characteristic.
0
Commissioning manual
SEMOD175060-87 v8
(Equation 79)
Off .
SEMOD175060-117 v10