CEM-D / CEM-C — DIN-rail electricity meters (MID), direct and transformer-connected
Country: Spain · Model: CEM-D / CEM-C
CEM-D and CEM-C are three-phase DIN-rail electricity meters with MID certification, class 1 for active energy. Direct-connection models are rated for current up to 100 A, while CEM-D3xx is connected through current transformers .../5 A or .../1 A. They are installed for submetering by tenant, workshop and line.
- CEM-D2xx
- direct connection up to 100 A (5(100) A); 3×127(230)…3×230(400) V
- CEM-D3xx
- transformer connection .../5 A or .../1 A
- CEM-C21c
- direct 5(100) A, RS-485 Modbus/RTU, for charging stations
- Class
- active — class 1 (B per MID), reactive — class 2
Technical specifications
| CEM-D2xx | direct connection up to 100 A (5(100) A); 3×127(230)…3×230(400) V |
|---|---|
| CEM-D3xx | transformer connection .../5 A or .../1 A |
| CEM-C21c | direct 5(100) A, RS-485 Modbus/RTU, for charging stations |
| Class | active — class 1 (B per MID), reactive — class 2 |
| Standards | EN 50470 (MID, modules B+D) or IEC 62052-11 |
| Communication | Modbus RS-485 or M-Bus (depending on the model) |
| Functions | resettable partial counter, pulse output, tariff/pulse input, tariff calendar |
| Size | 4 DIN modules |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
CEM-D2xx has a base and maximum current of 5(100) A and a voltage from 3×127(230) to 3×230(400) V; an example is CEM-D212-MID with M-Bus. The transformer-connected CEM-D311-MID has Modbus/RTU RS-485 and 2 digital inputs. CEM-C21c-MID is also rated for 5(100) A, has RS-485 Modbus/RTU and a transistor output, and is used in electric vehicle charging stations. Its voltage is 3×230/400 V, its own consumption is below 1 W, and the insulation withstands 4 kV for 1 min. Reactive energy is measured with class 2, and compliance with EN 50470 (modules B+D) or IEC 62052-11 depends on the model. The terminals can be sealed, and the housing takes 4 DIN modules. There is a resettable partial counter, a programmable pulse output, a tariff and pulse counting input, and a time-of-day tariff calendar.
How to choose
The choice is determined by the load current. Up to 100 A the meter is connected directly, so CEM-D2xx is used, and for higher currents you need CEM-D3xx and current transformers .../5 A or .../1 A. Choose the interface to match the data collection system, M-Bus in CEM-D212-MID or Modbus RS-485 in CEM-D311-MID. For a charging station there is CEM-C21c-MID. If you need network analysis instead of metering, look at the CVM-B100 with voltage and current of class 0.2.
Request a price and lead time
CEM-D / CEM-C — DIN-rail electricity meters (MID), direct and transformer-connected. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What current does CEM-D2xx measure?
Direct connection 5(100) A, that is, base 5 A and maximum 100 A, at a voltage from 3×127(230) to 3×230(400) V.
What accuracy class do CEM meters have?
Class 1 for active energy (class B per MID) and class 2 for reactive.
How does CEM-D311-MID differ from CEM-D212-MID?
CEM-D311-MID is transformer-connected, with Modbus/RTU RS-485 and 2 digital inputs. CEM-D212-MID is direct-connected, with an M-Bus interface.
Is the meter suitable for an electric vehicle charging station?
Yes, CEM-C21c-MID for 5(100) A has RS-485 Modbus/RTU and a transistor output, with its own consumption below 1 W.
How much space does the meter take on the DIN rail?
4 DIN modules. The terminals can be sealed.
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