Data Sheet

46
CEM-C31
Electrical energy meters for partial consumption
Three-phase electrical energy meter
with indirect measurement, assembly on DIN rail
Three-phase electrical energy meter with indirect measurement, 5(10)A. Built-in LCD display
(7 digits) with rotating screen system. Features built-in RS-485 communications. Also features
2 buttons (1 sealable button) for viewing all the measured information.
Other features include:
— Class 1 active energy, Class 2 reactive energy
— Complies with the IEC 62052-11 standards (international standards)
— Compact size (4 modules, 72 mm)
— Resettable partial meter
— 1 programmable impulse output, in accordance with DIN 43864 (CEM-C31-T1)
— 1 Digital input for Tariff selection and impulse count (CEM-C31-DS)
— Indicates bad connections on the screen
— Energy storage, even in the case of bad connections
— Redundant meter for verifying the energy allocated by the energy provider.
— Energy consumption report sent to a remote system (PLC/BMS).
— Cost control for achieving a high consumption/unit ratio in industrial processes.
— Display of electrical parameters (V, A, kW, kW·h, PF, etc.), per phase and three-phase.
Description
Applications
Technical features
Power circuit Rated voltage 230 Vac
Tolerance ± 20%
Frequency 50...60 Hz
Consumption < 2 W / 10 VA
Voltage measurement
circuit
Connection Three-phase
Reference voltage 3 x 57/100...3 x 230/400 Vac
Frequency 50 / 60 Hz
Self-consumption < 2 W / 10 VA
Current measurement
circuit
Nominal current I
n
5 A
Maximum current 10 A
Self-consumption < 0.1% of I
n
Accuracy Active Energy Class 1 (IEC 62053-21)
Reactive Energy Class 2.0 (IEC 62053-23)
Communications Hardware RS-485
Protocol Modbus
Baud rate 9600, 19200, 38400 bps
Impulse output
(CEM-C 31-T 1)
Type Optocoupled
Electrical features max. 24 Vdc 50 mA
Digital input
(CEM-C31-DS)
Type Potential-free contact NPN
Isolation Optoisolated
Function Tariff selection (T1/T2) and impulse count
Environmental features Operating temperature -25 ºC...+70 ºC
Relative humidity 5%...95% without condensation
Mechanical features Protection degree IP 51 installation / IP 40 terminals
Dimensions 70 x 90 x 64 mm
Weight 230 g
Material ABS + V0 self-extinguishing polycarbonate
Standards IEC 62052-11, IEC 62053-21, IEC 62053-23, MID