Janitza Phase Balancing Meters Owner’s Manual
- June 9, 2024
- janitza
Table of Contents
Janitza Phase Balancing Meters
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.
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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: [email protected]
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.
ADDRESS
ADDRESS: Janitza electronics GmbHVor dem Polstück 6 | 35633 LahnauGermany
Tel.: +49 6441 9642-0 [email protected] |
www.janitza.com