Alstom MiCOM P545 - 5.2.11 Voltage inputs

P54x/EN CM/La4 Commissioning
(CM) 10-26 MiCOM P543, P544, P545 & P546
CM
Shorting contact between terminals
P543 P544 P545 P546
Current
input
1 A - common - 5 A

A
C3 - C2 - C1 C3 - C2 - C1 D3 - D2 - D1 D3 - D2 - D1

B
C6 - C5 - C4 C6 - C5 - C4 D6 - D5 - D4 D6 - D5 - D4

C
C9 - C8 - C7 C9 - C8 - C7 D9 - D8 - D7 D9 - D8 - D7

A
(CT2)
Not applicable E3 - E2 - E1 Not applicable F3 - F2 - F1

B
(CT2)
Not applicable E6 - E5 - E4 Not applicable F6 - F5 - F4

C
(CT2)
Not applicable E9 - E8 - E7 Not applicable F9 - F8 - F7

SEF
C15 - C14 - C13 C15 - C14 - C13 D15 - D14 - D13 D15 - D14 - D13

M
C12 - C11 - C10 C12 - C11 - C10 D12 - D11 - D10 D12 - D11 - D10
Cell in MEASUREMENTS 1 column (02)
Corresponding CT ratio (in ‘CT and VT
RATIOS‘ column(0A) of menu)
[0201: IA Magnitude]
[0203: IB Magnitude
[0205: IC Magnitude]
[0A07 : Phase CT Primary]
[0A08 : Phase CT Secondary]
[0232: IM Magnitude]
[020B: ISEF Magnitude]
[0A0B : SEF amp CT Primary]
[0A0C : SEF amp CT Secondary]
Table 8: CT ratio settings
5.2.11 Voltage inputs
This te
st verifies that the accuracy of voltage measurement is within the acceptable
tolerances.
Apply rated voltage to each voltage transformer input in turn, checking its magnitude using a
multimeter/test set readout. Refer to the table below for the corresponding reading in the
relay’s MEASUREMENTS 1 column and record the value displayed.
Voltage applied
to
P543 & P544
Voltage applied
to
P545 & P546
Cell in MEASUREMENTS 1 column
[021A: VAN Magnitude] C19 - C22 D19 - D22
[021C: VBN Magnitude] C20 - C22 D20 - D22
[021E: VCN Magnitude] C21 - C22 D21 - D22
[022E: (CB1) Voltage Mag] C23 - C24 D23 - D24
[024C: CB2 CS Volt Mag] N/A F23 - F24
Table 9: Voltage input terminals
The measured voltage values on the relay LCD or a portable PC connected to the front
communication port will either be in primary or secondary volts. If cell [0D02: MEASURE’T
SETUP, Local Values] is set to ‘Primary’, the values displayed should be equal to the applied
voltage multiplied by the corresponding voltage transformer ratio set in the ‘VT and CT
RATIOS’ menu column (see Table 10). If cell [0D02: MEASURE’T SETUP, Local Values] is
set to ‘Secondary’, the value displayed should be equal to the applied voltage.