Energy Meter Testing Laboratory

Accurate billing of the consumed power is important not only to the utilities but also to the consumers. It is therefore, doubly important that the meters used for recording energy consumption shall be accurate and reliable, which calls for compliance of meters to specified standards. Therefore, the utilities and meter manufacturers need to ensure compliance and desirable quality of supplies. CPRI on its part facilitates in the task of achieving quality through its Energy Meter Testing Laboratory. This laboratory undertakes “TYPE TESTING” of electromechanical meters and electronic meter of accuracy class 0.2 to 2.0 as per National/International standards and also carry out performance test of sub-standard meters. Besides TYPE TESTING, the EMTL do carry out ACCEPTANCE TEST and ROUTINE TESTS and Tamper simulations tests as per the utility requirement.

CPRI has setup the comprehensive Energy meter test facility to cater the needs of manufacturer and Power Utilities. The laboratory is equipped with the state-of-the-art technology high accuracy and high precision test equipment/systems, which meets the requirements of International standards. The accuracy testing is carried out on fully automated system. The lab provides test facilities for Static and Electromechanical single-phase/three-phase energy meters and Trivector meters. Multifunction meter, TOD, ABT meters etc.

Our testing facilities are extensively used by utilities and meter manufacturers. The energy meter testing facility is also extended for developmental assistance as a measure to help the manufacturer to improve and ensure their specified function before arriving at their final product.

The EMTL provides comprehensive testing for meters as per the following National/International standards with the latest amendments.

i. IEC62052-11:2003-General requirements, tests and test conditions Part 11: Metering equipment
ii. IEC 62053-11:2003-Electromechanical meters for active energy (class 0.5, 1 and 2)
iii. IEC 62053-21:2003-Static meters for active energy (class 1 and 2).
iv. IEC 62053-22:2003-Static meters for active energy (class 0.2 S and 0.5 S)
v. IEC 62052-23: 2003-Static meters for reactive energy (class 2 and 3)
vi IS 13010:2002 - Electromechanical (ac WH) meters(Class 0.5, 1.0 and 2)
vii. IS 13779:1999 - ac Static WH meters-Class 1 and 2 (Reaffirmed 2004) with amendments 1,2,3, 4 & 5
viii. IS 14697:1999 - ac Static Transformer operated WH and VARH meters Class 0.2S, 0.5S & 1.0S(Reaffirmed 2004)
ix. CBIP Report No.304 - Standardization of AC Static Electrical Energy Meters .
x. CBIP Research publication No. 325 – CBIP guide on Static Energy meter specifications & Testing
xi. IS15884:2010 - ac direct connected static prepayment meters for active energy(class 1 & 2)
xii. IS16444:2015: a.c. Static direct connected watthour Smart Meter class 1 & 2 - specification

The major equipment for Energy Meter testing at CPRI are:

i. Multi position Fully Automatic meter test benches with 0.05 & 0.02 class Ref. meters.
ii. Static source capable of testing meters upto 200A
iii. Precision Reference energy standards of class 0.05 and 0.1.
iv. Surge Generator(7kV).
v. Surge Generator (10 KV).
vi. EMI/EMC test set up comprising of: -

• GETM Cell based RF immunity Test system
• RF EMI Receiver
• EFT Generator
• Surge Generator
• ESD Generator (upto 30kV)

vii. Glow wire Apparatus.
viii. Climatic Chamber (Dry/Cold/Humidity).
ix.  AC/DC magnetic Coils.
x.  Short time over current Set up

All supporting and allied test equipment for full type tests and tamper simulation tests.

The following tests can be carried out.

• Tests of Insulation Properties as per National and International Standards.
• Tests of Accuracy Requirements as per National and International Standards.
• Tests of Electrical requirement as per National and International Standards.
• Tests of Electromagnetic Compliance as per National standards and partially as per International standards.
• Tests of Climatic requirement.
• Tests of Mechanical requirement.
• Verifications / tamper simulation as per Tender specifications of utilities.

EMTL also provides consultancy services in the following areas:

• • Mobile Testing of energy meters at site as per IS 15707:2006 is offered from RTL, Noida. The Mobile test facility is accredited as per ISO 17025-2005.
  • Third party inspections of energy meters and vendor Analysis
  • Investigation and analysis of Tampered meters referred by Utilities, Judicial courts, Police departments.

Clientele:

EMTL offers credible and quality service which is being extensively availed by Power utilities in India, Energy meter manufacturers based in India and abroad. Foreign customers from Bangladesh, China, Turkey and Sultanate of Oman have availed our services.