ABB REG670 - Measuring the Trip and Time Limit for Set Values

ANSI09000021-1-en.vsd
IED test set
NI
IED
NI
V_A
V_B
V_C
V_N
V1
V2
V3
V_N
TRIP
ANSI09000021 V1 EN-US
Figure 54: Principle connection of the test set
Values of the logical signals belonging to the sensitive directional residual overcurrent
and power protection are available on the local HMI under Main menu/Test/Function
status/Current protection/SensDirResOvCurr(67N,IN>)/SDEPSDE(67N,IN>):x
13.5.6.1 Measuring the trip and time limit for set values
SEMOD175060-12 v2
Operation mode 3I
0
· cosφ
SEMOD175060-34 v9
Procedure
1. Set the polarizing voltage to 1.2 · VNRelPU and set the phase angle between
voltage and current to the set characteristic angle (RCADir). Note that the the
current lagging the voltage.
Take setting RCAComp into consideration if not equal to 0.
2. Inject current until the function picks up, and make sure that the trip current of
the set directional element is equal to the INcosPhiPU setting.
The I Dir (3I
0
· cosφ) function activates the PICKUP and PUNDIN output.
3. Assume that φ´ is the phase angle between injected voltage (3V
0
) and current
(3I
0
) i.e. φ´ = RCADir-φ. Change φ´ to for example 45 degrees. Increase the
injected current until the function trips.
Section 13 1MRK 502 073-UUS A
Testing functionality by secondary injection
194 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual