Testing The Synchrocheck Check - ABB REG650 Commissioning Manual

1MRK 502 049-UEN A
6.9.1.2
Commissioning manual
3.1. U-Bus = 80% GblBaseSelBus and f-Bus = 50.25 Hz, to verify that the
function does not operate when frequency difference is above limit.
4. Repeat with different frequency differences for example, 100 mHz with f-Bus
nominal and line leading and for example 20 mHz (or just above FreqDiffMin)
to verify that independent of frequency difference the closing pulse occurs
within 2 degrees.
5. Verify that the closing command is not issued when the frequency difference is
less than the set value FreqDiffMin.

Testing the synchrocheck check

During the test of SESRSYN for a single bay arrangement, these voltage inputs are
used:
U-Line UL1, UL2 or UL3 line 1 voltage inputs on the IED
U-Bus Bus voltage input on the IED
Testing the voltage selection for single 1 1/2 CB arrangements
At test of the SESRSYN function for a 1½ CB diameter the following alternative
voltage inputs can be used for the three SESRSYN (SESRSYN 1, SESRSYN 2,
SESRSYN 3) functions. These three SESRSYN functions can either be in one, two or
three different IEDs. Table
and SESRSYN 3 all are in the same IED. If SESRSYN 3 is in another IED, Bus1 will
be considered as Bus2 and Line2 as Line1. The voltage is selected by activation of
different inputs in the voltage selection logic as shown in table
Table 4: Voltage selection logic
SESRSYN CBConfig
setting
SESRSYN 1 1 ½ bus
(Operates on CB
CB1QA1)
SESRSYN 2 Tie CB
(Operates on
CB2QA1)
Table continues on next page
4 describes the scenario when SESRSYN 1, SESRSYN 2
Section to Activated Activated
be B1QCLD B2QCLD
synchroniz input on input on
ed IED from IED from
Bus1 –
Line1
Bus1 – CB2QA1
Line2
Bus1 – CB2QA1 CB3QA1
Bus2
Line1 –
Line2
Bus1 – CB1QA1
Line2
Bus2 – CB3QA1
Line1
Bus1 – CB1QA1 CB3QA1
Bus2
Section 6
Testing functionality
4 and figure 21.
Activated Activated Indication
LN1QCLD LN2QCLD from
input on input on SESRSYN
IED from IED from on IED
LN1QB9 B1SEL,
LN1SEL
LN2QB9 B1SEL,
LN2SEL
B1SEL,
B2SEL
LN1QB9 LN2QB9 LN1SEL,
LN2SEL
LN2QB9 B1SEL,
LN2SEL
LN1QB9 B2SEL,
LN1SEL
B1SEL,
B2SEL
101