Alstom SHPM 101 - Comparator Inputs

SERVICE MANUAL R5888C
QUADRAMHO Chapter 2
Appendix A
Page 16 of 71
Figure 16: Comparator inputs
Function ULA Input MHO QUAD
Zone 1 A Comp 1 A1(operate) (V–IZ)
A
Z1 (V–IZ)
A
Z1
B1(polarising) V
A
+0.16[–(V
B
+V
C
) I
N
R
+0.16V
MA
]
Zone 1 A–B Comp 1 A2 (V–IZ)
AB
Z1 (V–IZ)
AB
Z1
B2 V
A
–V
B
+0.16(V
C
+0.16 As MHO
[–(V
A
+V
B
)=0.16V
MC
])
Zone 1 B Comp 2 A1 (V–IZ)
B
Z1 (V–IZ)
B
Z1
B1 V
B
+0.16[–(V
C
+V
A
) INR
+0.16V
MB
]
Zone 1 B–C Comp 2 A2 (V–IZ)
BC
Z1 (V–IZ)
BC
Z1
B2 V
B
–V
C
+0.16(V
A
+0.16 As MHO
[–(V
B
+V
C
)=0.16V
MA
])
Zone 1 C Comp 3 A1 (V–IZ)
C
Z1 (V–IZ)
C
Z1
B1 V
C
+0.16[–(V
A
+V
B
) INR
+0.16VMC]
Zone 1 C–A Comp 3 A2 (V–IZ)
CA
Z1 (V–IZ)
CA
Z1
B2 V
C
–V
A
+0.16(V
B
+0.16 As MHO
[–(V
C
+V
A
)=0.16V
MB
])
Zone 2 A Comp 4 A1 (V–IZ)
A
Z2 (V–IZ)
A
Z2
B1 As Zone 1 A
I
A
R+I
N
R
Zone 2 A–B Comp 4 A2 (V–IZ)
AB
Z2 (V–IZ)
AB
Z2
B1 As Zone 1 A B As MHO
Zone 2 B Comp 5 A1 (V–
IZ)
B
Z2 (V–IZ)
B
Z2
B1 As Zone 1 B
I
B
R+I
N
R
Zone 2 B–C Comp 5 A2 (V–IZ)
BC
Z2 (V–IZ)
BC
Z2
B1 As Zone 1 BC As MHO
Zone 2 C Comp 6 A1 (V–IZ)
C
Z2 (V–IZ)
C
Z2
B1 As Zone 1 C
ICR+INR
Zone 2 C–A Comp 6 A2 (V–IZ)
CA
Z2 (V–IZ)
CA
Z2
B1 As Zone 1 CA As MHO
A Directional 1 DA1 –
I
A
Z
Ph
–I
N
Z
N
–I
A
Z
Ph
–I
N
Z
N
DB1 As Zone 1 A As MHO
A Left hand 1 DA2 Not used –I
A
Z
Ph
–I
N
Z
N
side line DB2 V
A
+I
A
R
B Directional 2 DA1 1–I
B
Z
Ph
–I
N
Z
N
–I
B
Z
Ph
–I
N
Z
N
DB1 As Zone 1 B As MHO
B Left hand 2 DB2 Not used –I
B
Z
Ph
–I
N
Z
N
side line DB2 VB+IBR
C–A Directional 3 DA1 –I
C
Z
Ph
–I
N
Z
N
–I
C
Z
Ph
–I
N
Z
N
DB1 As Zone 1 C As MHO
C Left hand 3 DA2 Not used –I
C
Z
Ph
–I
N
Z
N
side line 1 DB2 V
C
+I
C
R
A–B Directional 4 DA1 –I
AB
Z
Ph
–I
AB
Z
Ph
DB1 V Pol AB V Pol AB
A Right hand 4 DA2 Not used V
A
–I
A
R
side line DB2 –
IAZPh–I
N
Z
N
B–C Directional 5 DA1 –I
BC
Z
Ph
–I
BC
Z
Ph
DB1 V Pol BC As MHO
B Right hand 5 DA2 Not used V
B
–I
B
R
side line DB2 –I
B
Z
Ph
–I
N
Z
N
C–A Directional 6 DA1 –I
CA
Z
Ph
–I
CA
Z
Ph
DB1 As Zone 1 CA As MHO
C Right hand 6 DA2 Not used V
C
–I
C
R
side line DB2 ) –
I
C
Z
Ph
–I
N
Z
N
1–6 INB1 ( Left hand side line
INB2 (Not used Right hand side line
INB3 ( Guard zone
INB4 Directional G/F Directional G/F
INB5 DICO DICO
Inhibits all INB6 Power swing block Power swing block
ULA’s INB7 Common pole dead Common pole dead
INB8 Pole dead Pole dead
INB9 Directional P/F Directional P/F