Completing The Test; Autorecloser For 1/2/3-Phase Operation Smbrrec - Hitachi RET670 Commissioning Manual

Section 11
Testing functionality by secondary injection
WA1_QA1
(SESRSYN 1)
LINE1_QB9
IEC11000274 V3 EN-US
Figure 57:
11.11.1.5

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.
11.11.2

Autorecloser for 1/2/3-phase operation SMBRREC

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
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 58
an external bi-stable relay (BR), for example a relay type RXMVB2 or RXMD or Breaker Simulator of
Hitachi Power grids. The following manual switches are used:
236
TIE_QA1
(SESRSYN 2)
LINE1
Objects used in the voltage selection logic
illustrates a suggested testing arrangement, where the circuit-breaker (CB) is simulated by
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WA1
WA2
WA2_QA1
(SESRSYN 3)
LINE2_QB9
LINE2
IEC11000274-3-en.vsd
"Preparing the IED to verify
1MRK 504 165-UEN Rev. K
M2377-1042 v5
M12400-2 v12
settings".
Transformer protection RET670
Commissioning manual