Electric meter – Instructions for use and information

Caruna's electric meters are remotely readable, i.e. meter readings do not need to be reported separately. Meter readings come from the meter to our systems via a data connection.

With remote reading, invoicing is always based on up-to-date electricity consumption. You can view your electricity consumption in the Caruna+ energy monitoring service.

How to use an electric meter

A The small identifier T1 or T2 indicates which counter is currently in use.
B The counter device changes by pressing the meter's change button:

T0 indicates general electricity consumption, i.e. the number of kilowatt hours (kWh).
T1 indicates daytime or winter daytime consumption as two-rate hour metering.
T2 indicates consumption at night or during some other time as two-rate hour metering.
AIKA indicates the current time.
PVM indicates today’s date.
TARF indicates the electricity distribution product currently in use, i.e. the tariff.

C Load control relay on/off status indicator.
D Red lights flash according to consumption.

Example image of Caruna's electric meter:

Caruna's electricity meter.

Disconnect electricity from the meter during an absence

If you want to ensure that all your electrical devices are switched off while you are away from home for an extended period, you can cut off electricity by using the meter’s 0 button.

Do not disconnect electricity from the main switch of the apartment, as it will cut off the data connection of the electric meter. If connection is lost, we do not receive data from the meter for example about possible power cuts. When you cut off electricity from the meter's 0 button, you get an invoice based on your up-to-date electricity consumption.

The blue indicator light indicates that electricity is disconnected. However, the data connection is maintained. The light turns off when you switch electricity on with the I button. During electrical works, such as replacing a fuse, electricity is cut off from the apartment's main switch in accordance with electrical safety.

Effect of electrical load control on the electric meter

With electrical load control, an electrically operated storage heater, such as a water boiler or accumulating underfloor heating, is started from the electric meter in a scheduled manner.

The use of load control requires that the electric meter has a relay and that controlled electrical devices have been connected to the electric meter.
 
The relay of the electric meter "clicks" when electrical load control is switched on. A "click" of the relay does not mean the start of night-time prices for the electricity distribution product.

We offer several connection options from which you can choose the most suitable for your needs. The connection times of electrical load control are divided into groups (1–15). You can find the group number of the connection time you are using on your electric meter. Press the meter's change button until "RELE" is displayed. The number following the text indicates to which group the connection time belongs. 

The service is free of charge and does not affect the distribution product or the distribution of pricing.

View the connection times of electrical load control.

We collect electricity consumption data from meters in databases that are protected by firewalls, passwords and other technical means. We store the consumption data in our internal systems, which can only be accessed by our employees and partners whose work tasks require access.

The consumption data monitoring service, energy monitoring, and its back-end systems have passed a security audit to ensure that each customer can only view their own consumption data. In Caruna's energy monitoring service, you are identified and you can only view your consumption data for the points of delivery where you have or have had an electricity network contract. If the point of delivery was previously owned by another person, you will not see the consumption data for that period. Consumption data is transferred encrypted and automatically from the meter to our systems.

Remotely readable electric meters send electricity consumption data along the electricity network to hubs, from which the data is forwarded in the mobile network (3G/GPRS) once a day. Thus, meters do not send data directly on the mobile network. Meters and hubs operate in accordance with set standards on frequencies intended for use by electricity network companies. Hubs are installed outdoors or in the basements of apartments so that we can service them freely. 

Electric meters and hubs comply with the EMC (electromagnetic compatibility) standard. Standard-compliant electrical devices must not be affected by or interfere with the operation of other devices electrically or electromagnetically. This means that an electric meter does not interfere with, for example, a pacemaker.

The Radiation and Nuclear Safety Authority has published radiation data related to home appliances on its website, which also deals with the electromagnetic radiation caused by remotely readable electric meters. The Radiation and Nuclear Safety Authority has stated that remotely readable electric meters are safe to use.