Electricity measuring modules

Description

The electricity measuring module is available with one channel or three channels and is used for measuring the consumption or electricity production on one or several switching circuits or phases.

Typical applications for these modules:

• measuring the total electricity consumption of the dwelling that is connected to a single-phase supply network.
• measuring the total electricity consumption of the dwelling that is connected to a three-phase supply network 3N 400 Vac. measuring the total electricity consumption of the dwelling that is connected to a three-phase supply network 3 x 230 Vac is not possible.
• measuring the amount of energy generated by photovoltaic solar panels.
• measuring the consumption of specific circuits, such as the upper floor of a house, for instance.
• assessing which devices are heavy electricity users.

Overview

Operation

The measuring module measures the electrical current in one or several conductors via the current clamps supplied. The module measures the voltage of the phase to be measured via the connection terminals. By measuring both electrical current and voltage, the installation can accurately assess how much electricity is consumed or produced in the home.

All values measured are sent to the Niko Home Control installation and logged by the connected controller (light). The

eco-display shows the total electricity consumption and the electricity production, if applicable. A detailed overview of these data can be requested via the touchscreen*, a smartphone* or the Niko Home Control energy software.

• The measuring module should not be used for billing purposes. Only the data recorded by the meter of the         energy supplier are valid for billing purposes. The data recorded by the measuring module should be used forinformation purposes only.
• Do not use the measuring module to measure direct current components.
• Only use the current clamps supplied with the module to ensure that measurements are accurate.

Selecting the correct measuring module

Select an electricity measuring module with one channel or an electricity measuring module with three channels, based on the number and type of channels you wish to measure. Alternatively, the electricity consumption can be measured by a pulse counter provided that the electricity meter is fitted with a pulse output. See Pulse counter.

   A maximum of 20 channels can be measured per installation.

The electricity measuring module with three channels can be used for:

• measuring a three-phase connection (3N 400 Vac).
• measuring three individual switching circuits (1 x 230 Vac).

Use the programming software to select the operating mode of the electricity measuring module with three channels. Make a selection based on the table below:

*  In this case, use several measuring modules with one channel, or one measuring module with three channels.

*  Not possible with the light version of the connected controller.

The measuring data is then stored in the memory of the connected controller (light). This data can be exported, backed up and restored using the Niko Home Control user settings software (consult the Niko Home Control manual). How long the connected controller (light) will store this data for will depend on the number of channels in the installation. An overview

is provided in the table below. If the resident wishes to store this data for an extended period of time, then he or she must export this data using the Niko Home Control user settings software before the existing data will be overwritten.

Installation

Wiring diagrams for measuring modules with one channel

Wiring diagrams for measuring modules with three channels

Follow the steps below to install the electricity measuring module:

• Ensure that the installation is disconnected from the mains.
• Always measure voltage and current on the same phase.
• The cable of the current clamp supplied with the module is calibrated. Do not shorten or extend this cable.

1    Press the measuring module onto the DIN rail until it clicks into place.

2    Clip the current clamp around the conductor(s) of the switching circuit(s) of which the electricity consumption or production is to be measured.

The L side of the current clamp must point away from the main meter. The K side of the clamp must point towards the main meter.

Several switching circuits on the same phase can be measured by one single current clamp. One current clamp can be fitted around several different conductors.

Remember to take into account the direction of the current.

3    Connect the wires of the current clamp to the +/- screw terminals of the measuring module. Respect the polarity: connect the red wire to the + screw terminal and the black wire to the - screw terminal.

4    Connect the switching circuit(s) to the L/N screw terminals of the measuring module.

If you wish to measure the electricity consumption or production of several switching circuits on the same phase, you simply need to connect one of the switching circuits to the module.

5    Connect the measuring module to the module before it. Slide the sliding contact of this module to the right until it clicks into the measuring module. This will ensure that the bus and the power supply voltage are connected.

  Swapping of:

• the L/N screw terminals of the measuring module, or
• the +/- screw terminals of the current clamp, or
• the L side and K side of the current clamp

will not damage the measuring module nor the installation. However, doing so will reverse the sign of the value measured, which means that the graphs displayed may contain errors.

Provided that everything is installed correctly, the electricity consumption will always be displayed as a positive number while the amount of electricity generated (e.g. by solar panels) will always be displayed as a negative number. You can verify this via the eco-display, the touchscreen or the energy software.

Programming measuring modules

Use the programming software to select the currency of your choice: EUR, GBP or SEK. The following settings can be selected per channel:

• channel name.
• single-phase or three-phase use.
• channel type: global (meter from the energy supplier), consumer, amount generated.

• If the voltage at the power supply of the Niko Home Control installation is disrupted, no data will be logged,         even if electricity is still being consumed or produced by the switching circuits measured.
• You will lose all data of a channel if you use the programming software to:
  • remove the channel.
  • change the energy type (electricity/gas/water).
  • change the measurement type.
  • change the load type.

Export the data beforehand using the Niko Home Control user settings software (consult the Niko Home Control manual).

Error codes

When the module is functioning properly, the STATUS LED will light up in TEST mode only. If one or several errors occur, the LED will blink to indicate the error code of the error with the highest priority. The table below provides an overview of all error codes.

Technical data

Electricity measuring module with one channel

• measuring range with current clamp supplied: 5 - 11 490 W, 22 mA - 63 A
• measuring range with current clamp 550-00809: 90 - 27 600 W, 400 mA – 120 A
• input voltage: 230 Vac
• 1 current clamp (included)
• accuracy: IEC62053-21 class 1 (R), class 2 (L)
• single-phase connection: 230 Vac, 50 Hz
• cable thickness for the included current clamp: 1 x 10 mm² or 6 x 2.5 mm² or 9 x 1.5 mm²
• maximum cable thickness for the current clamp 550-00809: 4 x 10 mm² or 12 x 2.5 mm² or 20 x 1.5 mm²
• length of the connector cable at the current clamp: 100 cm
• not suited to measuring direct current components
• measuring data only for information purposes, not valid for invoicing
• 4 screw terminals to measure the voltage of the connected switching circuit
• 2 screw terminals to connect the current clamp supplied
• sliding contact to connect the module to the following module on the DIN rail
• dimensions: DIN 2U
• CE marked
• ambient temperature: 0 - 45 °C

Electricity measuring module with three channels

• measuring range with current clamps supplied: 5 - 14 490 W, 22 mA - 63 A
• measuring range with current clamp 550-00809: 90 - 27 600 W, 400 mA – 120 A
• maximum measuring range of the entire measuring module: 32768 W
• input voltage: 230 Vac
• 3 current clamps (included)
• accuracy: IEC 62053-21 class 1 (R), class 2 (L)
• connection:
  • three-phase: 3N 400 Vac, 50 Hz
  • single-phase: three switching circuits of 230 Vac, 50 Hz
• cable thickness for the included current clamps: 1 x 10 mm² or 6 x 2.5 mm² or 9 x 1.5 mm²
• maximum cable thickness for the current clamp 550-00809: 4 x 10 mm² or 12 x 12.5 mm² or 20 x 1.5 mm²
• length of the connector cable at each current clamp: 100 cm
• not suited to measuring direct current components
• measuring data only for information purposes, not valid for invoicing
• 3 x 2 screw terminals to measure the voltage of the connected switching circuits
• 3 x 2 screw terminals to connect the current clamps supplied
• sliding contact to connect the module to the following module on the DIN rail
• dimensions: DIN 4U
• CE marked
• ambient temperature: 0 - 45 °C

Current clamp 120 A

• expands the measuring range of the measuring modules up to 90 - 27600 W, 400 mA – 120 A per channel
• specify the type of current clamp during programming
• can be locked/unlocked up to ± 100 times
• length of the connector cable at the current clamp: 100 cm (may not be shortened or lengthened)
• maximum cable thickness for the current clamp: 4 x 10 mm² or 12 x 12.5 mm² or 20 x 1.5 mm²
• accuracy: IEC 62053-21 class 1 (R), class 2 (L)
• minimum insulation resistance: 100 MΩ (between core and output terminals)
• weight: 75 g
• ambient temperature: -20 °C - 50 °C
• dimensions: 55 x 29.5 x 31 mm (H x W x D)
• CE marked