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COUNTIS E2x

Active energy meters

Three-phase – direct 63 A

COUNTIS E20 COUNTIS E23
COUNTIS E20 COUNTIS E23
Function
  • The COUNTIS E2x is a modular active electrical energy meter displaying the energy and power consumed (kWh and kW) directly on its backlit LCD display. It is designed for three-phase load metering and is used for direct connections of up to 63 A.
Advantages
RS485 communication (MODBUS or M-BUS) or pulse output
  • To enable the remote reporting of energy consumption, COUNTIS E2x are provided with either a pulse output or an RS485 communication output, with MODBUS or M-BUS protocol. In addition to their reporting functions, COUNTIS E2x with RS485 can be configured remotely and enable access to multi-measurement values.
Dual-tariff metering
  • Two tariffs are available and can be easily accessed through the meter’s display. Each tariff can be utilised to assign energy metering to different time slots (high and low demand hours) or different sources (normal/backup).
Detection of connection errors
  • The product is protected against phase/neutral inversion and detects wiring errors. This simplifies the installation and commissioning, thereby reducing associated costs, and ensures that the device operates correctly.
MID certified B+D module
  • COUNTIS E products with MID certification provide the guaranteed accuracy required for applications in which sub-billing of the electrical energy consumed is necessary. “Module B+D” certification guarantees that the design and manufacturing process of products are approved by an accredited laboratory.
Principle diagram
Principle diagram COUNTIS E2x
Common characteristics
  • Measurement accuracy: 1%
  • Backlit LCD display (only E20/E21)
  • Detects connection errors

 

Models Key functions
E20 Pulse output
E21 Dual tariff (2 partial counters) + Pulse output
E23 MODBUS RS485 communication
E24 MODBUS RS485 communication + MID (Reset impossible)
E25 M-BUS communication
E26 M-BUS communication + MID (Reset impossible)

 

Front panel

front panel COUNTIS E2x 1. Backlit LCD display.
2. Navigation key.
3. Reset key.
4. Metrological LED (1000 pulses/kWh).

 

Electrical characteristics

COUNTIS E20/E21
COUNTIS E23…E26
Current measurement
Type three-phase direct 63 A three-phase direct 63 A
Input consumption 0.8 VA max. per phase 0.8 VA max. per phase
Startup current (Ist) 40 mA 15 mA
Minimum current (Imin) 0.5 A(1)  0.25 A
Transition current (Itr) 1 A(2) 0.5 A
Reference current (Iref) 10 A(3) 5 A
Permanent overload (Imax) 63 A 63 A
Intermittent overload  1890 A max for 10 ms 1890 A max for 10 ms
Voltage measurement
Range of measurement 230…400 V ± 20% 230…400 V ± 20%
Consumption (VA) 2 VA max. 2 VA max.
Permanent overload 280 V phase-neutral /
480 V phase-phase
276 V phase-neutral
Energy accuracy
Active (according to IEC 62053-21) Class 1
Power supply
Self-supplied yes
Frequency 50 Hz
Output (pulsed) COUNTIS E20/E21
Type of optocoupler IEC 62053-31 Class A (20 … 30 VDC)
Number 1
Fixed pulse weight 100 Wh
Pulse duration 100 ms
Operating conditions COUNTIS E20/E21
COUNTIS E23…E26
Operating temperature -10 to 55 °C -25 to 55 °C
Storage temperature -20 to 70 °C -25 to 70 °C
Relative humidity 85% 85%
Communication COUNTIS E13/E14/E15/E16
Link RS485
Type 2 … 3 half duplex wires
Protocol MODBUS® RTU
MODBUS speed 1200 … 38400 bauds
M-BUS speed 300 … 9600 bauds

(1)  I(min) ≤ 0.5 * ltr

(2) The accuracy class is guaranteed between Itr and Imax*

(3) I(ref) = I(b) (base current) = 10 * I(tr) for direct connection COUNTIS.

Case

Case COUNTIS E2x
Current measurement COUNTIS E20/E21
COUNTIS E23…E26
Type modular modular
Number of modules 4 4
Dimensions W x H x D 72 x 90 x 62.5 mm 72 x 90 x 64 mm
Case degree of protection IP 20 IP 20
Front degree of protection IP 51 IP 51
Display type LCD display LCD display
Rigid cable cross-section 1.5 to 16 mm2 1.5 to 35 mm2
Flexible cable cross-section 1 to 16 mm2 1.5 to 35 mm2
Weight 245 g 245 g

 

Connection

connection COUNTIS E2x

 

References

COUNTIS E20
COUNTIS E21
COUNTIS E23
COUNTIS E24
COUNTIS E25
COUNTIS E26
Type Reference Reference Reference Reference Reference Reference
direct 63 A – three-phase 4850 3003
direct 63 A – three-phase – Dual tariff 4850 3004
direct 63 A – with MODBUS communication via RS485 4850 3035
direct 63 A – with MODBUS communication via RS485 – MID 4850 3036
direct 63 A – with M-BUS communication 4850 3037
direct 63 A – with M-BUS communication – MID 4850 3038