The Schneider Electric iEM3255 AC Energy Meter is a compact, DIN-rail mounted device for monitoring energy consumption in single-phase or three-phase systems. It provides accurate measurements of energy, voltage, current, power factor, and frequency.
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Whenever the meter is connected to a CT ring, the ring must be configured within the meter. Detailed information about the process can be found in this article. |
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Supported Models | Communication Methods |
iEM3255 | RS485 |
Manufacturer User Manual & Instructions
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Network Configuration for RS485 connection
Device Baudrate | 19200 |
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Supported CT Rings
40/5 - METSECT5CC004
75/5 - METSECT5CC008
100/5 - METSECT5CC010
125/5 - METSECT5CC013
150/5 - METSECT5CC015
Installation and Configuration
Connect the power cables to the AC meter “V1” and “Vn” (neutral). Do not connect the cables to a power source at this time.
Connect the current cable between the AC meter ands the CT rings.
Phase Lines Installation
Safety:
Before installing the load cables and connecting the voltage lines, it is necessary to cut off the AC power. Once the wiring procedure is completed, you may turn the AC power back on
Any electrical installment should be carried out only by a certified high-voltage electrician
The AC power cable should be threaded through the ring as shown in the picture below.
The AC meter should be connected to a power source and the display should be turned on.
5. In order to start the AC Meter configuration please simultaneously press the "OK" and "ESC" buttons for five consecutive seconds until you see the word "Password" on the screen of the AC meter.
6. The password is 10. To edit the digits, use the "OK" button to move between them and the "Arrow" button to change them. When you have entered the password, click "OK" three times to complete the process.
Click the "OK" button until you reach the "CT & VT Ration". To access the menu, click "OK". Verify that the "CT Secondary" appears as it does in the CT ring you use, click "OK", and then verify that the "CT Primary" appears as it does in the CT ring. To complete this step, click on “OK ”.
You can then set the time and date and complete the process by clicking "OK" until it is complete.
To connect the AC meter to the Galooli Gateway (RS485), you will need to connect two cables, one to the "D1/+" and the other to the "D0/-".
AC Meter | Galooli Gateway |
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D1/+ | A |
D0/- | B |
Power Center Configuration
Supported Parameters
Power Center Parameters | System Parameters | Remarks |
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Total_Output_KWH | Rectifier_X.Total Load Energy [KWH] |
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Power_Phase 1-3 |
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Voltage_Phase 1-3 |
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Voltage_Phase 1-3 |
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