Testing The Protection Functionality; Forcing Of Binary Input/Output Signals For Testing; Forcing Concept; How To Enable Forcing - ABB REL650 Commissioning Manual

Section 8
Testing IED operation
8.7
8.8
8.8.1
8.8.2
8.8.2.1
64

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.

Forcing of binary input/output signals for testing

Forcing concept

Forcing of binary inputs and outputs is a convenient way to test wiring in stations
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 ) 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.
Be observant that forcing of binary inputs and outputs on an IED,
with inappropriate setup, can result in potential danger.

How to enable forcing

To enable forcing, the IED must first be put into IED test mode. While the IED is
not in test mode, the LHMI/PCM600 menus that relate to forcing will not have any
effect on the input/output status due to safety reasons.

Enable forcing by using LHMI

1. Enable IED TESTMODE by setting IEDTestMode to On under Main menu/
Test/IED test mode/TESTMODE:1.
1MRK 506 383-UEN A
GUID-125B6F28-D3E5-4535-9CD6-6C056B79F496 v2
GUID-3FD8C676-10E5-432A-8CD5-4643299AD794 v2
GUID-50280F59-A98C-4E48-AB6D-2B4C138943DD v1
GUID-41F7C636-75BC-42EF-A955-4BD9E347619E v2
Line distance protection REL650 2.2 IEC
Commissioning manual