Electricity and Control November 2022

COVER ARTICLE

METES meter testing: a new development at KoCoS

A s a follow-up to its flagship Metes 325, KoCoS, based in Cape Town, South Africa, has developed the METES 3.5 which is aimed at the middle and lower order portable energy calibration test equipment market. Maybe lower order, but suitable for a potentially larger number of units in the market and at a price versus performance ratio that is unrivalled. The METES 3.5 is a portable, three-phase energy meter calibration verifier. It is primarily intended for the verification of electronic and Ferraris energy meters, specifically aimed at the growing pre-payment energy meter industry in developing and first-world countries. It provides full functionality for energy meter verification of calibration errors with direct percentage error read-out. The unit measures and displays the system Voltage, Current, Angle and Power quantities. (W, var and VA) per phase and total quantities. It also displays voltage and current vectors and power vectors. The unit is supplied complete with three current clamp‑on sensors for easy integration into the power network. The current clamp-on sensors have larger than usual installation maximum conductor diameter capability of 15 mm. The unit has a 3.5-inch colour touch display and provides a measurement accuracy of 0.2% (typically 0.1%) for power /energy. The METES 3.5 has on-board memory that allows the user to save all readings and test results in a database for later downloading with PC software for report printing and archiving. Customer, Site and Test results information is stored. METES 3.5 has an optional Bluetooth printer for on-site printing of the test results. It is powered by a rechargeable battery. As shown in the photograph, the enclosure has sufficient storage space for the current sensors and voltage leads, which makes for a single unit without additional bags. The enclosure is also IP67 rated. Similar functionality is also available in a single-phase unit with the METES 1.5 model. □

The METES 3.5 portable, three-phase energy meter calibration verifier is supplied with current clamp-on sensors and voltage leads.

For more information contact KoCoS Measurement & Control (Pty) Ltd. Tel: +27 (0)21 982 0016

Mobile: +27 (0)82 376 1216 Email: herwin@kocos.co.za Visit: www.kocos.co.za

3 NOVEMBER 2022 Electricity + Control