M/s C and I Calibrations Pvt. Ltd, is a NABL Accredited Calibration and Testing Laboratory. The prime aim of this unit is to provide solution in managing calibration and Testing looking to the needs of the various industries in this region govt. organizations and private sectors.

  • J-448, Sitapura Industrial Area, Jaipur-302022 (Raj.) India
  • 91-141-2771849 / 91-8003095302
  • infocicpl@gmail.com
  • Mon - Sat: 9:00 am - 6:00 pm

Magnetizing current test at Low Voltage of transformer :-

This test is performed to locate defects in the magnetic core structure, shifting of windings. failure in between turn insulation or problem in tap changers. These conditions change the effective reluctance of the magnetic circuit, thus affecting the current required to establish flux in the core.

      1. First of all, keep the tap changer in the lowest position and open all IV and LV terminals.
      2. Then apply three phase 415 V supply on the line terminals for three-phase transformers and single phase 230 V supply on single phase transformers.
      3. Measure the supply voltage and current in each phase.
      4. Now repeat the magnetizing current test of transformer test with keeping tap changer in normal position.
      5. And repeat the test with keeping the tap at highest position.

Normally, there are two similar higher readings on two outer limb phases on transformer core and one lower reading on the center limb phase, in the case of three phase transformers. An agreement to within 30% of the measured exciting current with the previous test is usually considered satisfactory. If the measured exciting current value is 50 times higher than the value measured during factory test, there is a likelihood of a fault in the winding which needs further analysis.

Caution: This magnetizing current test of transformer is to be carried out before DC resistance measurement.

Our Power and Distribution Transformer Test Laboratory is NABL Accredited & BIS Recognized Laboratory.

Our lab is well equipped, meeting National/ International Standards and accredited by NABL (National Accreditation Board for Testing & Calibration Laboratories) under Dept. of Science & Technology (DST), Govt. of India, New Delhi.

What Is Included

We have included 4 business. These business are below:

Transformer Testing Laboratory

We have NABL Accredited & BIS Recognized Power & Distribution Transformer Test Lab. Transformer Tests – As per Is: 1180/ IS: 2026. are Routine Test, Type Test, special Test, Other Test, Lightning Impulse Test on Insulator, Bushing, Current Transformer and Potential Transformer.

CI Proficiency Training Provider

The CIPTPL provides dedicated and quality Proficiency Testing Services to its participants. CIPTPL has set up management systems based on ISO/IEC 17043 for this purpose and continually improves upon the effectiveness of the system based on the experience gained in the process.

World Precious Calibration Laboratory

C and I Calibrations Private Limited was established in 1995.C&I is having State of the art NABL Calibration Accredited Laboratories at Kota and Jaipur. We are also having facilities for Mechanical Calibration, Thermal Calibration, Fluid Flow Calibration & Electro-technical calibration.

Building Material Testing Laboratory

C & I Systems is a NABL Accredited Civil Testing Laboratory as per ISO/IEC 17025:2005. Samples are tested here- Soil, Rock, Stone, Water, Steel, Aggregate, Cement, Concrete, CC Cube, Tiles, Brick, Bitumen, Sand, Interlocking Block, Mix Design, Bitumen Mix Design, Chemical and Mechanical Testing Both. etc.

Why Choose This Service

There are no secrets to success. It is the result of preparation, hard work, and learning from failure. So Great things in business are never done by one person. They’re done by a team of people.

Happiness does not come from doing easy work but from the afterglow of satisfaction that comes after the achievement of a difficult task that demanded our best.

“A customer is the most important visitor on our premises. He is not dependent on us. We are dependent on him. He is not an interruption in our work. He is the purpose of it. He is not an outsider in our business. He is part of it. We are not doing him a favor by serving him. He is doing us a favor by giving us an opportunity to do so.”