kWh measurement device - DIN rail consumption meters

kWh measurement device for monitoring and registration

KWh meters measure the actual electrical energy consumption of an electrical installation. There are kWh meters for direct connection and meters that are connected by means of current transformers. With this measurement values up to 6000A can be measured.

Measured value converter

As a measured value converter, the effective pulses on a control system can be switched via pulse outputs with, for example, GLT, SPS, SCADA or with ProData® data logger, including GridVis® network visualization software.

Communication protocols

The M-Bus and Modbus protocols are available via the integrated communication interface. These interfaces can visualize additional values in addition to active and reactive energy, such as voltage, current, power and power factor / cos phi. The kWh meters can be used for collecting consumption data, in combination with the Janitza measuring devices UMG 96RM-E, UMG 604, UMG 605, UMG 508, UMG 509, UMG 511 and UMG 512 via Modbus RTU for partial measurements. Read more about this measuring equipment.

The measurement is designed for 1 phase and 3 phase systems with a voltage of L-N 230 VAC ± 20%. The current inputs are designed for either direct connection (Janitza B21 / B23) or measurement via a current transformer (Janitza B24). Active and reactive energy are available in one tariff or two rates and in four quadrants. The accuracy of the meter is class 1 for active energy and class 2 for reactive energy. All meters store the meter readings as permanent memory.

 

View kWh meters in the webshopAsk your question

MID kWh meter - kilowatt hour meter B21 - B23 - Janitza

Overview kWh measurement devices - MID

Overview table Janitza energy meters MID
  B21 B23 B24
  311 312 Modbus 313 Mbus 311 312 Modbus 313 Mbus 311 312 Modbus 313 Mbus
  B 21-serie energiemeters / kWh meters - Janitza B 23-serie energiemeters / kWh meters - Janitza B 24-serie energiemeters / kWh meters - Janitza
Energy values
Supplied/consumed energy
Average power (kVAr)
Real power (kW)
Phase angle
Tariff double double double
Technical details
Number of measurement channels 1-phase 3-phase 3-phase
Direct/indirect measurement direct direct indirect
Maximum current 65A 3x 65A 3x 5(6)A
Nominal current 230VAC 3x 230VAC / 400VAC 3x 230VAC / 400VAC
Communication
kWh pulse output
Pulse frequency (adjustable) 1-999.999 p./kWh 1-999.999 p./kWh 1-999.999 p./kWh
RS-485 (Modbus)
M-bus
Digital in-/outputs 2/2 2/2 2/2
Datasheets en specifications
Article numbers JA500145 JA500151 JA500153 JA500155 JA500157 JA500159 JA500160 JA500163 JA500168

 

Janitza B21 - 1 phase - kWh meter

The Janitza B21 series is a 1 phase kWh meter (1 + N) with direct measurement of up to 65 Amps. The energy meters use a double rate and have a width of 36 mm, the size of 2 DIN modules. The Janitza B21 kWh meter is MID and IEC approved. The kWh meters use M-bus and Modbus (RTU and ASCII) communication protocols and have two pulse outputs. The Janitza B21 has an S0 interface (potential-free pulse output) according to DIN 43864 for connection to an energy management system.

Features Janitza B21 kWh meter:

  • Temperature: -40 ° C to +70 ° C
  • Nominal voltage: 230 VAC
  • Transitional current: 0.5A
  • MID and IEC approved
  • Direct measurement up to 65 Amps
  • Accuracy class 1 / B (maximum 1% deviation)
  • S0 interface (potential-free pulse output)
  • Reference current Iref: 5A
  • 2-core connection / 1 measuring unit

 

View Janitza MID B21 kWh meters in the webshop

Kilowatt hour meter 1 phase MID - B21 - Janitza
Kilowatt hour meters - 3 phase - MID - B23 / B24 - Janitza

Janitza B23 - 3 phase - kWh meter

The Janitza B23 series is a 3 phase kWh meter (3 + N) with direct measurement up to 65 Amps. The energy meters use a double rate and have a width of 72 mm, the size of 4 DIN modules. The kWh meters use M-bus and Modbus (RTU and ASCII) communication protocols and have two pulse outputs. The energy meter can be used in environments with temperatures from -40 ° C to +70 ° C. The Janitza B21 has an S0 interface (potential-free pulse output) according to DIN 43864 for connection to an energy management system.

Features Janitza B23 kWh meter:

  • Temperature: -40 ° C to +70 ° C
  • Nominal voltage: 3x 230 VAC
  • Voltage range: 3x 220-240VAC
  • Transitional current: 0.5A
  • MID and IEC approved
  • Direct measurement up to 65 Amps
  • Accuracy class 1 / B (maximum 1% deviation)
  • S0 interface (potential-free pulse output)
  • Reference current Iref: 5A

 

View Janitza MID B23 kWh meters in the webshop

Janitza B24 - 3 phase kWh meter - CT

The Janitza B24 series kWh meters are 3 phase meters for indirect measurement (5A) with the use of current transformers. The B24 kWh meter has a configurable current ratio (CT) 9999 / 1-6 with a pulse frequency of 5000 imp / kWh.

Features Janitza B24 kWh meter:

  • Temperature: -40 ° C to +70 ° C
  • Transformer ratio freely set to 9999 / 1-6
  • Nominal voltage: 3x 230 VAC
  • Voltage range: 3x 220-240VAC
  • For connection with 3 and 4 conductors
  • Reference current Iref: 1A
  • Transitional current: 0.05A
  • MID and IEC approved
  • Accuracy class 1 / B (maximum 1% deviation)
  • S0 interface (potential-free pulse output)

 

View Janitza B24 kWh meters in the webshop

kWh meter B24 - CT - Janitza
GridVis energy analysis software - Janitza

Measurement data insightful with Janitza Gridvis

With GridVis, fortop offers user-friendly energy management analysis software for configuring and analyzing consumption and power quality. GridVis provides the data to identify cost savings, lower energy costs and take appropriate action to prevent production outages.

Janitza GridVis consists of several variants. The energy analysis software Janitza GridVis has been built up step by step, with the different variants becoming increasingly functional. The different Janitza Gridvis variants:

  • GridVis Basic
  • GridVis Professional
  • GridVis Service
  • GridVis Ultimate

GridVis Basic features:

  • Up to five measuring instruments
  • Graphs and analysis tools
  • Jan-DB Database
  • Energy and consumption reports
  • PQ reports
  • RCM reports

GridVis Professional, Service and Ultimate all have the above functionalities, with additional features and functionalities. For example: unlimited number of measuring instruments and data points, MSSQL and MySQL database drivers and alarm manager. Read more about the Janitza GridVis software packages.

Communication topology - kWh meters

Communication topology kWh meters - Janitza

close-video-button