ABB RER670 Commissioning Manual page 118

Section 10
Testing functionality by secondary injection
112
5. Measure the operate time of the timer by injecting 1.2 · UNRel> and a current
to get two times the set SN> operate value.
 
T kSN S 2 / I
inv ref 0
IECEQUATION235 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 Off.
Operation mode 2I
0
1. Set the polarizing voltage to 1.2 · UNRel> and set the phase angle between
voltage and current to the set characteristic angle (RCADir). Note that the
current shall lag the voltage.
2. Inject current until the function picks up, and make sure that the operate
current is equal to the INDir> setting for the set directional element.
Note that for operation, both the injected current and voltage
must be greater than the set values INRel> and UNRel>
respectively.
The function activates the START and STDIRIN output.
Measure with angles j around RCADir +/- ROADir.
3.
4. Compare the result with the set values, refer to Figure
characteristic.
5. Measure the operate time of the timer by injecting a current to get two times
the set SN_> operate value.
 
T kSN S
inv ref
IECEQUATION235 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 Off.

 
2 U cos
test 0 test
and φ
 
2 / I 2 U cos
0 test 0 test
1MRK 506 377-UEN C
GUID-1D01114B-B012-483F-BE1A-2C0237407477 v1
26 for example

Railway application RER670 2.2 IEC
Commissioning manual
(Equation 4)
(Equation 5)