ABB RELION 670 Series Technical Manual page 1373

1MRK 502 066-UUS B
REX062 input protection
REX062 limits overvoltage by a varistor at the injection output to stator. Normally , REX060 will
interrupt the injection circuit in case of excessive over-current in the injection chain. Fuse within
REX062 is an additional protection in case of failure within REX062 during over-voltage condition.
A blown REX062 fuse requires a module disassembling to replace the fuse (F 6.3 A 250 V).
However, if this occurs it is recommended to identify the reason for the over-current and do
needed actions to reduce the current.
Exciter
source
X1:1 ; Rotor +
Rotor
X1:7 ; Rotor -
R
Stator
Distribution
Transformer
ANSI11000017 V2 EN-US
Figure 698: Example installation when REX062 unit is required
Technical manual
REX061
Coupling Capacitor unit
Injection; X1:9
Ground; X1:10
PE
REX062
Shunt Resistor unit
X1:2 ; Injection A
External A ; X1:9
X1:4 ; Injection B
External B ; X1:10
I sense A; X1:6
I sense B; X1:8
PE
REX060
Injection unit
X11:4
X11:5
Power Supply Module
Ready; X11:1
Common; X11:2
Fail; X11:3
Rotor Module(RIM)
X82:1 ; Inj
A
Block 220V ; X81:1
X82:3 ; Inj
A
Block 110V ; X81:2
X82:4 ; Inj
B
Block 48V ; X81:3
X82:5 ; Inj
B
Block Common; X81:4
X82:2 ; InjSh
B
I Out; X81:10
A
X81:16 ; I sense
A
X81:14 ; I sense
I Out; X81:11
A
B
X81:15 ; I sense
B
U Out; X81:8
A
X81:12 ; V sense
A
U Out; X81:9
B
X81:13 ; V sense
B
Blocked; X81:5
Saturation; X81:6
Common; X81:7
Stator Module ( SIM)
X62:1 ; InjExt
A
Block 220V ; X61:1
X62:3 ; Inj
A
Block 110V ; X61:2
X62:4 ; Inj
B
Block 48V ; X61:3
X62:5 ; Inj
B
Block Common; X61:4
X62:2 ; InjExt
B
X61:14; I sense
I Out; X61:10
A
A
X61:15; I sense
I Out; X61:11
B
B
X61:12; V sense
V Out; X61:8
A
A
X61:13; V sense
V Out; X61:9
B
B
Blocked; X61:5
Saturation; X61:6
Common; X61:7
PE
Section 23
Injection equipment hardware
REG670
+
EL
-
BI
RL+
(BI)
BO
RL-
AI (V ) current measure
,
AI (V) voltage measure
,
BI
BI
RL+
BO
RL-
AI (V) , current measure
AI (V) , voltage measure
BI
BI
RL+
PE
ANSI11000017-2-en.Vsdx
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