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.

 

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MID kWh meter - kilowatt hour meter B21 - B23 - Janitza
Kilowatt hour meter 1 phase MID - B21 - Janitza

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

 

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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

Kilowatt hour meters - 3 phase - MID - B23 / B24 - Janitza
kWh meter B24 - CT - Janitza

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)

 

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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.

GridVis energy analysis software - Janitza
emu
EMU Professional - Universal meter - kWh meter - EMU Electronics

EMU Professional - Universal meter - Logger - Web server

The EMU Professional from EMU Electronic is a 3 phase kWh meter, universal meter, logger and web server in one. A variety of measured values are transmitted via the bus system, for example active and reactive power, current, voltage, active, reactive and apparent power, power factor, power frequency, minimum and maximum values.

Many options in one housing

The EMU Professional is suitable for both 5 A and 1 A current transformers and direct connection up to 85 A. The meters use a double rate and have a width of 72 mm, 4 DIN modules. In addition to a kWh meter, the EMU Professional is a universal meter and can optionally be equipped with an M-bus, KNX, LON, RS485-Modbus or TCP / IP output. The 4 SO pulse outputs (Opto Power MOSFET, 600V AC or V DC, 90 mA) can also be used as switches to switch loads on and off. Read more about EMU Professional.

 

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EMU Allrounder - kWh meter - M-bus interface

EMU Allrounder is a universally applicable kWh meter, equipped with a pulse output as standard with the M-Bus option.

Direct measurement up to 75A

The EMU Allrounder has a direct measurement up to 75A and with the use of current transformers 5 and 1A. The kWh meter uses a double rate and has an S0 pulse output for active energy (kWh).

 

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EMU Allround kWh meter - M-Bus interface - EMU Electronic

KWh meter EMU12 - Mechanical counter

The EMU12 is a 1 phase kWh meter with a measuring range of 20 mA to 63 A. The EMU12.x1M uses a single tariff and the EMU12.x2M uses a double tariff. The kWh meter has a size of 2 DIN modules, 36 mm. The current meters use direct measurement up to 63 A. The EMU12 / 80 single rate variant, direct measurement up to 85 A. The kWh meters have 1 pulse output (kWh consumption).

Features EMU12:

  • Nominal maximum current 5 (63) A
  • Accuracy class 2
  • Voltage: 230VAC
  • Mechanical counter
  • Direct measurement 63/85 A
  • Single rate
Kilowatt hour meter EMU12 - Mechanical counter - EMU Electronic

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