Janitza Phase Balancing Meters Owner’s Manual

: June 9, 2024
: janitza

Table of Contents

Janitza Phase Balancing Meters
General
Functional description
ADDRESS
References
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Janitza Phase Balancing Meters

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General

Copyright
This functional description is subject to the legal provisions of copyright protection and may not be photo- copied, reprinted, reproduced or otherwise duplicated or republished in whole or in part by mechanical or electronic means without the legaly binding, Written consent of
Janitza electronics GmbH, Vor dem Polstück 6, D 35633 Lahnau, Germany.

Trademarks
All trademarks and the rights arising from them are the property of the respective owners of these rights.

Disclaimer
Janitza electronics GmbH assumes no responsibility for errors or defects within this functional description
and assumes no obligation to keep the contents of this functional desciption up to date.

Comments on the manual
Your comments are welcome. If anything in this manual seems unclear, please let us know and send us an email at: info@janitza.de

ATTENTION

Observe the operating manual for the installation and operation of the device!

Basics
When dealing with energy meters, a distinction is made between balancing meters and non-balancing meters. Today, balancing meters are used predominantly. This difference is particularly important if you both draw energy from the grid and supply it to the grid, for example with a photovoltaic system. Another factor is that symmetrical loading becomes very unlikely as soon as single-phase consumers are employed. The same also applies to single-phase generators.
Users may be subject to disadvantages in the case of non-balancing meters, as the remuneration for deliv-ered energy is usually significantly lower than the cost of consumed energy. If both generation and consumption are three-phase and symmetrical, balancing meters plays a minor role. If you only consume energy, you do not need a balancing meters.

Functional description

Balancing meters measure the current of the individual phases and multiply it by the measured voltage. The resulting power values, whether consumed or delivered, are then offset against each other. The power of all three phases is added together (L1+L2+L3 = sum). Delivered power is given a negative sign, consumed power a positive sign. This means that either the power consumed or the power delivered will necessarily equal zero, depending on whether more is generated or consumed. The respective power is then multiplied by time and the result is attributed to the energy consumed or delivered, depending on the sign. A non-balancing meters, on the other hand, shows both consumption and generation in this same case. It only adds up consumed and delivered power separately and bills the one and credits the other according to the energy consumed or delivered, without first offsetting them against each other. This is illustrated by the following examples.

Example 1

Example 2

Example 3

Cost calculation for example 3
Assume one hour of constant power in consumption and delivery with the following values:

Remuneration for delivered energy per kWh: 0.09 euros
Cost of consumed energy per kWh: 0.25 euros
Phase L1: 1 h x 50 kW = 50 kWh
Phase L2: 1 h x 50 kW = 50 kWh
Phase L3: 1 h x 100 kW = 100 kWh

Balancing metere

Consumption: 0 kWh
Delivery: 0 kWh
0 kWh x 0.25 € = 0.00 € cost
0 kWh x 0.09 € = 0.00 € remuneration
No remaining costs.

Non-balancing meter:

Consumption: 100 kWh
Delivery 100 kWh
100 kWh x 0.25 € = 25.00 € cost
100 kWh x 0.09 € = 9.00 € remuneration
Remaining costs: €16.00

Doc. no. 2.353.076.1.a | 01/2023 | Subject to technical alterations. The latest version of the document can be found in the download area at www.janitza.com.