ABB IM300-I Operational Manual page 23

Screen 2：System Wiring
The upper display shows "SYS" the word that the system
wiring, as shown in fig. 3-2-25: The system wiring for the
3-phase 4-wire system, 3PT, 3CT.
Note: The factory default is 3P4L, 3PT, 3CT.
Screen 3：PT ratio
The upper display shows "PT" word represents PT ratio.
As shown in fig. 3-2-26: PT secondary rating is 220V, PT
primary rating is 1000V.
Note: The factory default value, PT primary rating is 220V, PT
secondary rating is 220V.
Screen 4：CT ratio
The upper display shows "CT" indicates the CT ratio. As
shown in fig. 3-2-27: CT secondary rating two options for a
total is1A and 5A, CT primary rating is 100A.
Note: The factory default values, CT primary rating is 5000A,
CT secondary rating is 5A.
Screen 5：Zero-sequence CT ratio
The upper display shows "CT0" word for zero-sequence CT
ratio. As shown in fig. 3-2-28: CT0 secondary rating two options
for a total is 1A and 5A, CT0 primary rating is 100A.
Note: The factory default value, CT0 primary rating is 5000A,
CT0 secondary rating is 5A.
Screen 6：Direction of CT wiring and system frequency
IM300 Intelligent Power Monitoring Instrument
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Fig 3-2-25 Wiring Systems
Fig 3-2-26 PT ratio
Fig 3-2-27 CT ratio
Fig 3-2-28 Zero-sequence CT ratio