ABB REL301 Instruction Manual page 130

Numerical distance relay
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+
Va
-
+
If
-
+
Vb
-
+
Ip
-
+
Vc
-
Rated dc Voltage (+)
(Check Nameplate)
(-)
Figure 5-7. Test Connection for AØ-Ground Test (Dual Polarizing)
20
18
16
14
12
19
17
15
13
11
REL 301/302
(Front View)

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