Connecting The Test Equipment To The Ied - ABB REG650 Commissioning Manual

Section 5
Testing IED operation
5.4
38
If a test switch is not used, perform measurement according to the provided circuit
diagrams.
Never disconnect the secondary connection of a current transformer
circuit without first short-circuiting the transformer's secondary
winding. Operating a current transformer with the secondary winding
open will cause a massive potential build up that may damage the
transformer and cause personal injury.

Connecting the test equipment to the IED

Connect the test equipment according to the IED specific connection diagram and the
needed input and output signals for the function under test. An example of a
connection is shown in figure 9.
Connect the current and voltage terminals. Pay attention to the current polarity. Make
sure that the connection of input and output current terminals and the connection of the
residual current conductor is correct. Check that the input and output logical signals
in the logic diagram for the function under test are connected to the corresponding
binary inputs and outputs of the IED under test.
To ensure correct results, make sure that the IED as well as the test
equipment are properly earthed before testing.
IL1
IL2
IL3
IN
UL1
UL2
UL3
N
IEC09000643 V1 EN
Figure 9: Connection example of the test equipment to the IED when test
equipment is connected to the transformer input module
IL1
IL2
IL3
IN
UL1
UL2
UL3
N
UN
TRIP
IEC 61850
IEC09000643-1-en.vsd
1MRK 502 049-UEN A
Commissioning manual