Ardan international transformer Maintenance provides specialized, high quality and safe installation service to high/medium voltage power transformers and shunt reactors and associated equipment .primary focus is to maintain a safe and efficient service to cover our customer needs and satisfaction.Installation activities shall be performed in accordance with the risk assessment/method of statement (RAMS) and strictly following the principle contractor project safety instructions. Safety is always the priority to reduce and mitigate the possible risks at site. Depending upon the site conditions, our experts always monitor the risks to ensure safe place to work for themselves and others.
We provides comprehensive commissioning service to all types of large power transformers and shunt reactors, meeting the exacting standards of all Transmission and Distribution Network Operators.Commissioning activities can be group under to category as prior to energizing and after energizing.Prior to energizing the following items should be reviewed:Visual inspection on the transformer/shunt reactor .Checking of impact recorder Checking of painting, leakages and fastening Welding/ air ventilation on bushings' radiators, conservator etc. Earthing Cooling equipment Tap changer, oil filter and motor drive unit Current transformers Protective Equipment Oil sample Electrical tests
The power transformers shall be tested on site after completion of the installation and vacuum filling to ensure the electrical and mechanical condition of the transformer active part, ancillary devices, and insulating oil prior to energization. Insulation Resistance Winding Resistance Voltage Ratio and Vector Check Calibration of Winding Temperature Indicators Calibration of Oil Temperature Indicators Fan, Pump and Tap changer Drive Motor Characteristics Operation checks of all ancillary devices (Buchholz Relays, Pressure Relief Devices, etc) CT – Ratio, Resistance Polarity, Magnetisation Curves, and Test Loop Polarity Tangent Delta SFRA (Sweep Frequency Response Analysis) Capacitance and Power Factor
Ardan International provides reliable service with all aspects of maintenance and testing and makes use of state-of-the-art tools and techniques for evaluating transformer condition. Reasons for Maintenance, Condition and Life Assessment For providing reliable electrical energy, it is very necessary to have highly reliable associated electrical equipment. The transformer, being a key element in the transmission and distribution of electrical energy, improving its reliability is of utmost importance. Hence, it is, all the more essential, to employ continuous monitoring techniques and on-site diagnostics followed by quality maintenance for having the trouble-free and reliable operation with minimum outages..