If the UB1/2OK inputs for the fuse failure are used, they must be activated, during
tests below. Also verify that deactivation prevents operation and gives an alarm.
1.
Connect the signals above to binary inputs and binary outputs.
2. Connect the voltage inputs to the analog inputs used for each bus or line
depending of the type of busbar arrangement and verify that correct output
signals are generated.
Testing the voltage selection for double breaker
M2377-691 v6
This test should verify that correct voltage is selected for the measurement in the
SESRSYN function used for a diameter in a One-and-a-half breaker arrangement.
Apply a single-phase voltage of 100% GblBaseSelLine to the U-Line and a single-
phase voltage of 100% GblBaseSelBus to the U-Bus. Verify that correct output
signals are generated.
1. Connect the analog signals to the voltage inputs, in pair of two for U1 and
U2. (Inputs U3PBB1, U3PBB2, U3PLN1, U3PLN2)
2. Activate the binary signals according to the used alternative. Verify the
measuring voltage on the synchronizing check function SESRSYN. Normally
it can be good to verify synchronizing check with the same voltages and
phase angles on both voltages. The voltages should be verified to be available
when selected and not available when another input is activated so connect
only one voltage transformer reference at each time.
3. Record the voltage selection tests in a matrix table showing read values and
AUTOSYOK/MANSYOK signals to document the test performed.
Testing the voltage selection for 1 1/2 CB arrangements
GUID-12E7DA63-FE04-4C83-9BA6-34818C510DB8 v4
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
37 describes the scenario when SESRSYN 1,
SESRSYN 2 and SESRSYN 3 all are in the same IED. If SESRSYN 3 is in another
IED, WA1 will be considered as W
A2 and LINE2 as LINE1. The voltage is
selected by activation of different inputs in the voltage selection logic as shown in
table
37 and figure 52.
Table 37: Voltage selection logic
SESRSYN CBConfig
setting
Section to
be
synchroniz
ed
Activated
B1QCLD
input on
IED from
Activated
B2QCLD
input on
IED from
Activated
LN1QCLD
input on
IED from
Activated
LN2QCLD
input on
IED from
Indication
from
SESRSYN
on IED
SESRSYN 1
(Operates on
WA1_QA1)
1 ½ bus
CB
WA1 –
LINE1
LINE1_Q
B9
B1SEL,
LN1SEL
WA1 –
LINE2
TIE_QA1 LINE2_Q
B9
B1SEL,
LN2SEL
WA1 –
WA2
TIE_QA1 WA2_QA
1
B1SEL,
B2SEL
Table continues on next page
Section 11 1MRK 505 378-UEN A
Testing functionality by secondary injection
228 Line differential protection RED670 2.2 IEC
Commissioning manual
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