The Central Electricity Authority (CEA) on January 23, 2024, issued a notification regarding Technical Specifications for 1 Phase Electronic Net Energy Meter for Solar metering application.
The following has been stated: -
•This specification covers the design, engineering, manufacture, testing, and calibration of the manufacturer’s works before dispatch, packing, supply, and delivery of Class 1.0 accuracy, electronic Net energy meter, suitable for connection to LT single phase 2 wire, 240V system.
(i)The static whole current electronic meter shall offer a current range of 5-30 A, (or 5-60 A) (the first digit indicates the Basic Current & second digit indicates the Maximum Current of the respective meters) for tariff purposes, as per requirement given in this specification.
(ii)The meters to be supplied against this specification shall be suitable for satisfactory continuous operation under the following tropical conditions. Meters shall be capable of maintaining the required accuracy under hot, tropical, and dusty climates.
(iii) The class of accuracy of the meter shall be 1.0. The accuracy shall not drift with time.
(iv)The meter shall start registering energy at 0.2% of basic current at unity power factor and shall be fully functional within five seconds after the rated voltage is applied. Running at no load: When voltage is applied and no current flows in the current circuit, the test output of the meter shall not produce more than one pulse.
(v)The rated maximum current for the meter shall be 100% of Imax at which the meter purports to meet the accuracy requirement. Meter terminals should be suitable to carry 150% of Imax.
•Technical Specifications for Whole Current A.C. Single Phase Smart Energy Meter: - These specifications cover the design, manufacturing, testing, supply, and delivery of AC whole current, single phase, 2 wires Smart Energy Meter with bidirectional communication facility & remote connect/disconnect switch. The meter shall communicate with the Head End System (HES) on any one of the communication technologies mentioned in IS16444 Part 1, as per the requirement of the utility.
•Technical Specifications for Whole Current A.C. Three Phase Smart Energy Meter: -The specification covers the design, manufacturing, testing, supply, and delivery of AC whole current 3 phase 4 wires Smart Energy Meter with bidirectional communication facility suitable for Advanced Metering Infrastructure (AMI) with connect/disconnect switch. The meter shall communicate with the Head End System (HES) on any one of the communication technologies mentioned in IS16444 Part 1, as per the requirement of the utility / authorized system integrator.
The detailed notification is given in the document attached below.
