ABB RED670 Relion 670 series, Commissioning Manual

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11.10.2 Autorecloser for 1/2/3-phase operation SMBRREC
M12400-2 v11
Verification of the auto recloser for single-phase, two-phase or three-phase auto
reclosing attempts can be considered to consist of two parts.
• One part to verify the internal logic and timing of the auto recloser
• One part to verify its interaction with the protection system
This section deals with verification of the auto recloser itself. However, it is
practical to start the auto recloser by activating a protection function, for example,
by secondary injection tests.
Prepare the IED for verification of settings outlined in Section "Preparing the IED
to verify settings" .
The purpose of verification before commissioning is to check that entered
selections, setting and configuration render the intended result. The auto recloser 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 auto recloser 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 53 illustrates a 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.
Section 11
1MRK 505 378-UEN A
Testing functionality by secondary injection
230 Line differential protection RED670 2.2 IEC
Commissioning manual