PM
-
3133i User
’s Manual v1.02
Last Revised: Apr. 2023 Page: 14
Copyright © ICP DAS Co., Ltd. All Rights Reserved.
E-mail: [email protected]
Voltage Input
1.
PM-3133i series: Input Voltage up to 600V.
For any higher Input Voltage large than 600V, please add the PT (power transformer), and Change
PT RATIO setup.
2.
Confirm the RST (ABC) phase sequence.
Current Input
1.
The external CT’s are fragile, please handle with care.
2.
The current input of PM-3133i series is in mA range. Only the ex-
factory attached CT’s can be used.
The other CT’s, for example, from panel will damage the instrument due to its large current (around
5A)
3.
When more than one smart meter (PM-3133i series) are installed, please do not disconnect the CT
with its original meter and mix use with each other. Since each set of smart meter (PM-3133i series)
and its attached split type clip-on CT are calibrated set by set. The mix use may cause wrong
measurements.
4.
To install CT’s correctly, please ensure the CT lines sequences is right before clip the CT’s onto the
power cable of the monitoring equipment. (Detail will be found in next section)
5.
When measuring the current, the secondary circuit of a CT should never be
opened when a load is passing through its primary. Make sure you always open
the CT clip to detach the CT before removing the terminal lines. Otherwise, it will cause severe
injury.
6.
Please handle with extra care, espe
cially when the operation space of CT’s is limited.
7.
The current direction must follow K-
L marked on CT’s.
8.
Please select the right size CT’s for different size of monitoring equipment cables:
power cable diameter
＜
Φ10 use 60A CT
，
Φ10
～
Φ16 use 100A CT
，
Φ16
～
Φ24 use 200A CT,
，
Φ36 use 300A CT
，
Φ36 use 400A CT
9.
The maximum current value cannot exceed the CT rating
