Table of Contents

Installing electricity meters

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

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

1. Direct meter installation

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

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

2. Indirect meter and Current Transformer (CT) installation

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

2.1 Install the meter

Attention! It is essential to perform the configuration procedure below immediately upon meter installation. Otherwise, the measurement will be incorrect!
  1. Connect each phase and the neutral to the voltage terminals at the bottom of the meter according to the diagram below.
  2. Create a link (short circuit) between L1 and LA, and between 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. If an error occurs, the meter must be replaced!

Press the "E" button for 3 seconds and enter the default password (1000) using the "P" and "M" buttons. Confirm by pressing "E" for a long time.

password.png

Navigate to "CT rate".

ct_rate.png

Press the "E" button for 3 seconds and enter the CT rate corresponding to the primary current of the installed CT according to the table below. Confirm by pressing "E" for a long time.

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 (U) Measurement:

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

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

2.4 Current (I) Measurement

Open and securely close each CT around each phase cable whose current you wish to measure.

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

2.5 Voltage and Current Connection Verification

Press the "M" button until the Power Factor (PF) for each phase 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 consumption or input meter, momentarily disable the site's photovoltaic inverters.

2.6 CT Direction Verification

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

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

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

If the displayed value is not in the correct direction, reverse the S1 and S2 wires for that phase.

screen334.png

3. RS485 Bus Connection

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 on the meter.

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

4. Modbus Addressing of Meters

The meter addressing is done directly on the meter.

password.png

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

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

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

set_addr.png

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

set_pass_1000.png

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