Product leaflet
Three phase electricity meters B23/B24
EQ meters in Steel version from ABB
The compact and versatile EQ meters B23 and B24 are
three phase meters with outstanding performance. They
can be used in most of the common applications for
reliable and trustworthy metering of energy usage.
EQ meters B23/B24 in Steel version can be used in
stand-alone applications or metering network installa-
tions with the option of inbuilt M-Bus or Modbus.
General features
B23 is a three phase direct connected meter up to 65 A
and B24 is a three phase transformer connected for 5 A.
The B23 and B24 are measuring active energy with accuracy
class B (Cl. 1). The low rated or base currents of these prod-
ucts ensures high dynamic performance with superior ac-
curacy even at low currents. Navigation of the meters is easily
done via the push-buttons below the display. The exceptional
low power consumption of the meters, less than 1.6 VA,
makes them economical in the long run-an important feature
specially for large meter populations.
Communication
Data from B23 and B24 can be collected via pulse output
or serial communication. The meters are equipped with a
transistor output for 5-40 VDC external supply. It can be used
for pulses proportionally to the measured energy or various
alarms.
The meters are also available with built-in serial com-
munication
interfaces for Modbus RTU (RS-485) or M-Bus as
options.
Instrumentation
The B23 and B24 meters support reading of instrument values.
A large number of electrical properties can be read.
• Active power - Total and per phase
• Voltage - Total and per phase
• Current - Total and per phase
• Power factor
• Frequency
Approvals
The B23 and B24 meters are type approved according to IEC
as well as type approved and verified according to MID.
MID is the Measure Instruments Directive 2004/22/EC from
European Commission. The type approval is according to stan-
dards that covers all relevant technical aspects of the meter.
These include climate conditions, electromagnetic compatibility
(EMC), electrical requirements, mechanical requirements and
accuracy.
Ordering details
65 A direct connected, 4 DIN
Voltage V Communication Type Order code Weight
1 pc
Steel
Active energy, pulse output, class B (Cl. 1)
3 x 230/400 V AC - B23 111 - 100
2CMA100163R1000
0.31
RS-485 B23 112 - 100
2CMA100164R1000
0.32
M-Bus B23 113 - 100
2CMA100165R1000
0.33
6 A transformer connected, 4 DIN
Voltage V Communication Type Order code Weight
1 pc
Steel
Active energy, pulse output, class B (Cl. 1)
3 x 230/400 V AC - B24 111 - 100
2CMA100177R1000
0.25
RS-485 B24 112 - 100
2CMA100178R1000
0.25
M-Bus B24 113 - 100
2CMA100179R1000
0.27
Approvals
The B23 and B24 meters are type approved according to IEC
Product leaflet 2CMC485001L0201, rev. B, July 2014 Prod ABB AB, LP/XM
B series
Technical data
B23 B24
Voltage/current inputs
Nominal voltage 3x230/400 V AC
Voltage range 3x220-240 VAC (-20% - +15%)
Power dissipation voltage circuits 1.6 VA (0,7 W) total
Power dissipation current circuits 0.007 VA (0.007 W) per phase at 230 V AC and Ib
Base current Ib5 A -
Rated current In-1 A
Reference current Iref 5 A -
Transitional current Itr 0.5 A 0.05 A
Maximum current Imax 65 A 6 A
Minimum current Imin 0.25 A 0.02 A
Starting current Ist < 20 mA < 1 mA
Terminal wire area 1 - 25 mm20.5 - 10 mm2
Recommended tightening torque 3 Nm 1.5 Nm
Communication
Terminal wire area 0.5 - 1 mm2
Recommended tightening torque 0.25 Nm
Transformer ratios
Configurable current ratio (CT) -1/9 - 9999/1
Pulse indicator (LED)
Pulse frequency 1000 imp/kWh 5000 imp/kWh
Pulse length 40 ms 40 ms
General data
Frequency 50 or 60 Hz ± 5%
Accuracy Class B (Cl. 1)
Active energy 1%
Display of energy 7 digit LCD
Environmental
Operating temperature -40°C - +70°C
Storage temperature -40°C - +85°C
Humidity 75% yearly average, 95% on 30 days/year
Resistance to fire and heat Terminal 960 °C, cover 650°C (IEC 60695-2-1)
Resistance to water and dust IP20 on terminal block without protective enclosure and IP51 in protective enclosure,
according to IEC 60529.
Mechanical environment Class M1 in accordance with the Measuring Instrument Directive (MID). (2004/22/EC).
Electromagnetic environment Class E2 in accordance with the Measuring Instrument Directive (MID), (2004/22/EC).
Outputs
Current 2 - 100 mA
Voltage 5 - 40 VDC.
Pulse output frequency Programmable: 1 - 999999 imp/kWh
Pulse length Programmable: 10 - 990 ms
Terminal wire area 0.5 - 1 mm2
Recommended tightening torque 0.25 Nm
EMC compatibility
Impulse voltage test 6 kV 1.2/50μs (IEC 60060-1)
Surge voltage test 4 kV 1.2/50μs (IEC 61000-4-5)
Fast transient burst test 4kV (IEC 61000-4-4)
Immunity to electromagnetic HF-fields
80 MHz - 2 GHz (IEC 61000-4-6)
Immunity to conducted disturbance 150kHz - 80MHz (IEC 61000-4-6)
Immunity to disturbance with harmonics 2kHz - 150kHz
Radio frequency emission EN 55022, class B (CISPR22)
Electrostatic discharge 15 kV (IEC 61000-4-2)
Standards
IEC 62052-11, IEC 62053-21 class 1, GB/T 17215.211-2006, GB/T 17215.312-2008
class 1
, GB 4208-2008, EN 50470-1, EN 50470-3 category B
Mechanical
Material Polycarbonate in transparent front glass. Glass reinforced polycarbonate in bottom
case and upper case. Polycarbonate in terminal cover.
Dimensions
Width 70 mm
Height 97 mm
Depth 65 mm
DIN modules 4
© Copyright 2014 ABB. All rights reserved. Specication subject to
change without notice.
This QR-code is linked to our web site
www.abb.com/lowvoltage.
You will have to download a QR-code reader
app to your phone in order to use it.
ABB AB
Meters
Box 1005
SE-611 29 NYKÖPING, Sweden
Telephone +46 155 29 50 00
Telefax +46 155 28 81 10
www.abb.com
3 wire connection, 2 elements
3 4 6 7 9
L1
L2
L3
111
Wiring diagram B23
34 6 7 9
L1
L2
L3
N
111
4 wire connection, 3 elements
3 wire connection, 2 elements
3 5 7 8 9
L1
L2
L3
1 2 11
P1 P1
P1 P2
S1 S2
Wiring diagram B24
3 4 5 6 7 8 9
L1
L2
L3
N
1 2 11
P1 P1 P1
P1 P2
S1 S2
4 wire connection, 3 elements
