Generally, Climkit provides the Eastron SDM630 Modbus meter, but other models with similar features and sizes may be delivered based on stock availability.
For panels with GRD meter panels, it is possible to order DIN rail enclosures with mounting plates.
DIN rail enclosure on T mounting plate (H: 36cm, W: 21cm)
4. Installation and Configuration
Direct Meter
Connect the phases on the grid side from the top (L1, L2, and L3).
Connect the consumer (or photovoltaic inverter) from the bottom (L1, L2, and L3).
Connect the neutral at the top and/or bottom of the meter (N).
Indirect Meter and Current Transformer (CT)
Caution! It is essential to perform the configuration procedure below immediately after installing the meter. Otherwise, the measurement will not be correct!
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 specified on the CT. The secondary current is 5A.
Warning! The ratio can only be set once on a certified MID meter. In case of error, 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 long-pressing "E".Navigate to "CT Rate".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 long-pressing "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
Voltage Measurement (U): 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.
Current Measurement (I): Open and securely close each CT on each phase of the cable from 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.
Verification of Voltage and Current Connection: Press the "M" button until the Power Factor (PF) is displayed for each phase L1, L2, and L3. The displayed values should be close to 0.9. If not, the voltage measurement and the current measurement are not on the same phase. Move the S1 and S2 pairs to another phase until you obtain a correct value.
To avoid disturbances during this verification on a consumer or introduction meter, temporarily trigger the photovoltaic inverters on site.
Verification of CT Direction: Press the "P" button until the instantaneous active power (kW) is displayed for each phase L1, L2, and L3. The values should be positive (consumption meter) or negative (production meter) indicated by the "-" sign. Always verify the introduction meter with the site's inverters triggered 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 of the phase.
Communication Bus Connection
The meters (Slaves) are connected via an RS485 bus network to the gateway (Master) according to the diagram below.
The bus connection requires careful and rigorous work. For new panels, it is recommended to do it in the workshop and to use a shielded cable of type U72 4 x 0.8mm2.
