Testing The Protection Functionality; Forcing Of Binary Input/Output Signals For Testing; Forcing Concept - ABB Relion 670 Series Commissioning Manual

1MRK 511 403-UEN E
IEC10000032 V1 EN-US
Figure 20: PCM600 report tool display after communication interruption
10.7

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.
10.8

Forcing of binary input/output signals for testing

10.8.1

Forcing concept

Forcing of binary inputs and outputs is a convenient way to test wiring in substations as well
as testing configuration logic in the IEDs. Basically it means that all binary inputs and outputs
on the IED I/O modules (BOM, BIM, IOM & SOM) can be set to a value (i.e active or not-active),
selected by the user, while the IED is in test mode. For inputs, this is true regardless of the
actual signal voltage present on the input. For outputs, any output relay can be forced to be
active or not, regardless of the current requested state of the output in the IED logic
configuration.
Bay control REC670
Commissioning manual
Be observant that forcing of binary inputs and outputs on an IED, with
inappropriate setup, can result in potential danger.
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Testing IED operation
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Section 10
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