ABB Relion 670 Series Commissioning Manual page 132

Section 10
Testing functionality by secondary injection
4. Check that the MANENOK output is activated after set tManEnerg.
5. Increase the U-Bus to 80% GblBaseSelBus and keep the U-Line equal to 30%
GblBaseSelLine. The outputs should not be activated.
6. Repeat the test with ManEnerg set to DLLB with different values on the U-Bus and the U-Line
voltage.
10.9.1.4 Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
10.9.2 Autoreclosing for railway system SMBRREC
The verification of the auto recloser function for railway system consists of two parts:
• One part to verify the internal logic and timing of the function
• One part to verify its interaction with the protection system
This section deals with verification of SMBRREC itself. However, it is practical to start SMBRREC by
activating a protection function, for example, by secondary injection tests.
Prepare the IED for verification of settings outlined in Section
The purpose of verification before commissioning is to check that entered selections, setting
parameters and configuration render the intended result. The function is flexible with many options
and facilities. At commissioning only the selections and settings intended for use are verified. If one
chooses to reduce some time settings in order to speed up verification, be careful to set the
parameters at intended operational values at the end of the verification procedure. One such
parameter is the tReclaim time that must be timed out before a new test sequence can be performed.
The verification test is performed together with protection and trip functions. Figure
suggested testing arrangement, where the circuit-breaker (CB) is simulated by an external bi-stable
relay (BR), for example a relay type RXMVB2 or RXMD or Breaker Simulator of ABB. The following
manual switches are used:
• Switch or push-button to close (SC)
• Switch or push-button to trip (ST)
• Switch for CB ready condition (SRY)
If no bi-stable relay or breaker simulator is available, replace it with two self-reset auxiliary relays and
use a self-holding connection.
Use a secondary injection IED test set to operate the protection function. The test set shall be
switched off when a trip signal is given or when the BR comes to open position to simulate real
conditions.
The CB simulation can be made more elaborate, including simulation of the operating gear condition,
CBREADY of either the type ready for a Close-Open (CO) cycle, or the type ready for an Open-Close
-Open (OCO) cycle.
The CB condition CBREADY of a type, CO, shall be high (true) until a closing operation is performed.
It then goes low (false) for a recharging time of about 5 - 10s. After that it is high again.
A CB condition CBREADY of a type, OCO shall be high (true) before and during tripping (Start
reclosing). During tripping it goes low for a recharging time, for example, 10s. It may thus be low at
the instant of reclosing. After each Open or Close operation it may need a recharging period before it
goes high again.
In the example of CB simulation arrangement, the CBREADY condition is simulated by a manual
switch, SRY.
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"Preparing the IED to verify
33
Railway application RER670
Commissioning manual
M2377-1042 v5
settings".
illustrates a