In-house testing

The Company follows stringent quality control and testing procedures. MML’s testing infrastructure consists of complete type, routine, and acceptance test capabilities for its products. Our range of equipment encompasses the following areas:

Mechanical –

This unit tests under sever conditions, various aspects of EHV hardware fittings such as tensile, compression, torsion, bending, slipping, etc.

Vibration –

We have an elaborate vibration testing laboratory for testing effects of vibration on insulator strings, spacers, dampers and conductors, for up to 100 meters and up to 10-bundle conductor configurations. Other equipment includes electrodynamic shakers of LDS, UK make; analysers of B&K, Denmark make; and vibration analysis software.

Chemical –

The unit consists of spectrometers for chemical analysis, grain size and inclusion rating apparatus, microscope, and advanced equipment for zinc coating tests, etc.

Electrical –

This unit consists of magnetic power loss, AC/DC resistance, Heating cycle test equipment of 6000 amps capacity, etc.

Rubber testing –

This unit tests for determining tensile, elongation, conductivity, shore hardness, heat aging and ozone aging on the synthetic rubber components.

Bolt testing –

Complete infrastructure exists for testing of HT Bolts & Nuts of 8.8 grade

Third-party testing

Apart from having a comprehensive in-house NABL Accredited lab, MML has also tested its products in third party laboratories of repute such as:

CESI, Italy
Hydro Quebec, Canada
Bazet, France
EPRI, China
Wuhan High Voltage Lab., China
ZGU & EGU, Czech Republic
Sediver, France
IIS, Bangalore
CPRI, Bangalore, Bhopal & Hyderabad
IIT, Mumbai