These checks shall be repeated for Analog primary values.
4.
Inject an unsymmetrical three-phase voltage and current, to verify that phases are
correctly connected.
If some setting deviates, check the analog input settings under
Main menu/Configuration/Analog modules
Measured values such as current and voltages as well as active, reactive and apparent
power, power factor phase angles as well as positive and negative and zero sequence
currents and voltages are available in the local HMI under
Main menu/Tests/Function
status/Monitoring
.
Navigate to the measurement function that contains the quantity to be checked.
Table 1:
Measurement functions
Function
Quantity
Description
CMMXU
IA to IC
amplitude, range and angle
CMSQI
3I
0
; I1 and I2
amplitude, range and angle
CVMMXN
S; P; Q; PF; Ilag; Ilead; U; I and f
amplitude, range and angle
VMMXU
VA_C to VC_A i.e. phase-to-
phase
amplitude, range and angle
VMSQI
3U
0
; U1 and U2
amplitude, range and angle
VNMMXU
VA to VC i.e. phase-to-neutral
amplitude, range and angle
Also the Signal Monitoring tool in PCM600 can be used to read the measured values. In
many cases it is more convenient to use PCM600 since, among many things, reports on
measured values can be exported from the Signal Monitoring tool to other tools (for
example, MS Excel) for further analysis.
5.7
Testing the protection functionality
Each protection function must be tested individually by secondary injection.
•
Verify operating levels (trip) and timers.
•
Verify alarm and blocking signals.
•
Use the disturbance handling tool in PCM600 to evaluate that the protection function
has received the correct data and responded correctly (signaling and timing).
•
Use the event viewer tool in PCM600 to check that only expected events have
occurred.
1MRK 505 293-UUS A
Section 5
Testing IED operation
43
Commissioning manual
