Table of Contents

Install the electricity meters

This article describes the on-site installation of electricity meters. For the equipment to function, a configuration on the Climkit platform is also required. Links are available at the end of the document.

This step occurs after the installation of a router and a Climkit Gateway (or an RS485-Ethernet converter in the case of a Cloud Gateway)

1. Installation of direct meters

This installation allows the measurement of currents with an intensity < 80A

  1. Connect the phases on the grid side from the top (L1, L2, and L3).
  2. Connect the consumer (or the photovoltaic inverter) from the bottom (L1, L2, and L3).
  3. Connect the neutral at the top and/or bottom of the meter (N).

2. Installation of indirect electricity meters and current transformers (CT)

This installation allows the measurement of currents with an intensity > 80A.

2.1 Install the meter

Warning! It is essential to perform the configuration procedure below as soon as the meter is installed. Otherwise, the measurement will not be correct!
  1. Connect each phase and the neutral to the voltage terminals at the bottom of the meter according to the diagram below.
  2. Bridge L1 and LA, and N and NA.
  3. Connect each CT to the terminals at the top of the meter, respecting phases L1, L2, and L3.

2.2 Configure the CT ratio:

The CT ratio (CT rate) is equal to the primary current of the CT divided by its secondary current. The primary current is indicated on the CT. The secondary current is 5A.

Caution! The ratio can only be set once on a MID certified meter. In case of error, the meter must be replaced!

Press the "E" key for 3 seconds and enter the default password (1000) using the "P" and "M" keys. Confirm by holding "E".

password.png

Navigate to "CT rate".

ct_rate.png

Press the "E" key for 3 seconds and enter the CT rate corresponding to the primary current of the installed CT according to the table below. Confirm by holding "E".

Primary current

CT rate (ratio)

100 A

20

200 A

40

400 A

80

600 A

120

800 A

160

1000 A

200

1500 A

300

2000 A

400

2.3 Voltage measurement (U):

Connect the neutral to N and each phase to L1, L2, and L3.

Also connect LA with L1, and NA with N, to power the meter.

2.4 Current measurement (I)

Open and securely close each CT around each of the phases of the cable for which you wish to measure the current.

Connect the S1 (white) and S2 (black) wires of the CT to the top of the meter for each phase.

2.5 Verification of voltage and current connection

Press the "M" button until the Power Factor (PF) for each of the phases L1, L2, and L3 is displayed.

The displayed values should be close to 0.9.

If this is not the case, the voltage measurement and the current measurement are not on the same phase. Move the S1 and S2 pairs to another phase until a correct value is obtained.

To avoid disturbances during this verification on a consumer or input meter, momentarily switch off the site's photovoltaic inverters.

2.6 Verification of CT direction

Press the "P" button until the instantaneous active power (kW) for each of the phases L1, L2, and L3 is displayed.

The values should be positive (consumption meter) or negative (production meter) indicated by the "-" sign.

Always check the input meter with the site's inverters switched off to obtain positive values. Do not rely on the arrow indicated on the CT.

If the value indicated is not in the correct direction, reverse the S1 and S2 wires of the phase.

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3. Connection of the RS485 bus

The meters (Slaves) are connected via an RS485 bus network to the Gateway (Master) according to the diagram below.

Use terminals A, B, and G of the meter.

The bus connection requires careful and rigorous work. For new panels, it is recommended to do this in the workshop and use a shielded U72 type cable 4 x 0.8mm2.

4. Modbus addressing of the meters

Addressing of the meter is done directly on the meter.

password.png

Under "SET Addr", enter the meter address defined on the online platform (see above).

To modify the address, press the "E" key for 3 seconds, then select the unit to modify using the "E" key, and then modify the unit using the "P" or "M" keys.

Once the address is correctly edited, confirm by pressing the "E" key for 3 seconds.

set_addr.png

Change the password of each meter under "SET PASS" with the password indicated under EQUIPMENT > Communication > Gateway:

set_pass_1000.png
It is recommended to verify the installation from the Climkit platform
Wiring diagram for Climkit electricity meters
Configuration of electricity meters on the Climkit platform
Technical Datasheet for the Direct electricity meter - Eastron SDM630Modbus
Technical Datasheet for the Indirect electricity meter - Eastron SDM630MCT
Technical Datasheet for the current transformer - ESCT Eastron
Configuration of unlisted electricity meters

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