12.3
12.3.1
12.3.2
114
Synchrocheck and energizing check (SYN)
Testing the energizing check
During test of the energizing check function for a single bay arrangement, these voltage inputs
are used:
U-line
UL1, UL2 or UL3 voltage input on the terminal.
U-bus
U5 voltage input on the terminal
At test of the energizing check function for a 1 1/2 CB diameter the following alternative voltage
inputs can be used for the three energizing check functions. The voltage is selected by activation
of different inputs in the voltage selection logic:
SYN1
U-line
U-bus
SYN2
U-line
U-bus
SYN3
U-line
U-bus
Testing the dead line live bus (DLLB)
The test should verify that the energizing function operates for a low voltage on the U-Line and
for a high voltage on the U-bus. This corresponds to an energizing of a dead line to a live bus.
The settings in
table
12can be used during the test if the final setting is not determined.
Table 12:
Test settings for DLLB (NA=Not applicable)
Parameter
Operation
InputPhase
UMeasure
PhaseShift
URatio
UL1
Activate SYN1_FD1CLD and UF1OK
UL2
Activate SYN1_CB2CLD and UF2OK
U4
Activate SYN1_CB2CLD, CB3CLD and UB2OK
U5
Activate SYN1_UB1OK
UL2
Activate SYN2_FD2CLD and UF2OK
U4
Activate SYN2_CB3CLD and UB2OK
UL1
Activate SYN2_FD1CLD and UF1OK
U5
Activate SYN2_CB1CLD and UB1OK
UL1
Activate SYN3_CB2CLD and UF1OK
UL2
Activate SYN3_FD2CLD and UF2OK
U5
Activate SYN3_CB1CLD, CB2CLD and UB1OK
U4
Activate SYN3_UB2OK
Setting
On
UL1
Ph/N
0 deg
1.00
Chapter 13
Verifying settings by secondary
Single bay
Single bay
Multiple
with phas-
bays
ing
NA
NA
injection