ELECTRICAL ENERGY METERS
The meters for registering electrical energy, which are installed on the premises of Domestic and small Commercial and Industrial Customers, record the Kilowatt-hour (KWh) consumed. It is quite eusy and simple for one to read the display of the Meter and record one’s consumption of electrical energy, on a daily, weekly or monthly basis.
The Meters accuracy at the time of their installation by personnel of EAC is given and indisputable. These Meters are accurate instruments which are checked tested and certified at the special workshop of the Meter Testing and Repair Centre (MT & RC) of EAC prior to their installation on the premises of consumers.
Domestic consumers are on tariffs 05, 06, 07 and 08, and small Commercial and Industrial are on tariffs 15, 16, 17, 25, 26 and 27. In such cases the Electricity Authority of Cyprus installs either Single-phase or Three-phase Meters, depending on the needs of the electrical installation of the premises. In addition, depending on tariff selected meters can be of either single or double registration.
For large Commercial or Industrial Consumers, who have the Meter installed on their premises connected to the High or Medium Voltage and who are on tariffs 61, 62, 71, 72, 63, 73 and 83, the Electricity Authority of Cyprus installs the Three phase Meters “ABB Nision” (3X110 V, 3X5 (10 A) ) or the Three-phase Meters “Landis & Gyr” (3X230/400V, 3X5 (6A) ) and (3x230/400V 3X20 (100A) ). These meters apart from the electrical energy consumption in Kilowatt-hours, register also various other parameters of the consumption among with the Maximum Demand of the Load.
These meters via the depression of a button found on their facade, offer the possibility of displaying on their screen a variety of information.
The procedure which must be followed in order to bring to the display of the meters of such information is described herein below.
Three-phase Meter “ABB Vision”
To enable the user to enter the field “consumer” which hosts three categories of information namely, “Demands” “Instrumentation” and “General” the user should press the information button for approximately five seconds. With short depressions of the button the above three categories can be sequentially brought to the display. In order to be enabled to enter into one of these categories and read the information therein one must press the button for five seconds and thereafter with short depressions of the button the information of the particular category will be displayed.
Three-phase Meter “Landis & Gyr”
The information of the screen depending on the content is categorized under one of the following categories, “Operating Display”, “Display List” and “Service List”.
In the first category, “Operating Display” the information appears immediately after the energizing of the meter and each information is automatically replaced by the next one every five seconds.
In order for the second category “Display List “ to be displayed the information button should be depressed for one second. Thereafter, with short depressions of the button a change in the title pages can be achieved. Then the field std-data is selected by depressing the information button for five seconds and after than again with short depression of the button the information within the field is displayed.
For displaying the third category “Service List” the information button must be depressed for one second, afterwards, via short depressions a change in the title pages is achieved. Then the field SE_data is selected by depressing the information button for five seconds and after that again with short depression of the button the information within the field is displayed.
Differences between the new and the old type of meters
EAC has installed both old type meters (electromechanical) as well as meters of a newer generation (electronic).
Visually the new meters differ from the usual electromechanical meters due to the fact the first, contrary to the second, do not have moving parts and mechanical registers.
In addition, the new meters are smaller in volume and weight as compared with the electromechanical. An important characteristic of the electronic meters is their high and consistent accuracy.
Within the context of upgrading of the quality of its service to its consumers the Electricity Authority of Cyprus develops modernization programmes for its equipment and of its network in general. In the context of materializing of such programmers EAC proceeds with the introduction of meters and metering systems of the latest technology whose operation will benefit both the consumers and EAC itself.