Our Commitment
ITCL has dominated the instrument transformer market share throughout the country and stands as the number one company in terms of installations in India by installing more than 64,000 nos. of current and potential transformers nationwide and abroad. ITCL has supplied to all industrial sectors such as steel, textile, cement and electrical power and distribution companies.
ITCL aspires to become the No. 1 instrument transformer company in the world. We accept challenges with a creative spirit and the courage to realize our own dreams without losing drive or energy. We approach our work vigorously, with optimism and a sincere belief in the value of our contribution. We believe in a culture of openness with dedicated leadership at all levels of work. We strive to decide our own fate. We act with self reliance, trusting in our abilities. We accept responsibility for our conduct and for maintaining and improving the skills that enable us to deliver added value.
We adopt very stringent and rigorous processes which are carried out through several stages to deliver the best perfomance and value.
Raw material quality control | Stage Inspections | Finished product quality control | Environment
ENVIRONMENT
We are conscious of the importance of environment protection and make constant endeavours to protect it. We do not use PCB based oil. All wasted paper is either recycled or burnt and disposed off in an environment friendly way.
FINISHED PRODUCT QUALITY CONTROL
Each and every Instrument Transformer is checked for routine tests as specified in the relevant IS and IEC standards, with records of the same maintained. ITCL, has a very sophisticated testing laboratory where the following tests are conducted.
- High Voltage Power Frequency Test on Primary Winding.
- High Voltage Induced Voltage Test.
- High Voltage Power Frequency Test on Secondary Winding.
- Accuracy Test.
- Composite Error Test.
- Knee Point Voltage Test.
- Inter-turn Test.
- Tan Delta Test.
- Insulation Resistance Test.
- Polarity Test.
- Secondary Resistance Test.
- Primary Resistance Test.
- Partial Discharge Test.
STAGE INSPECTION WHILE MANUFACTURING
The stage inspection is carried out to all critical stages of manufacturing. The main checking and quality measures adopted at various stages are given below:
Coils : Each coil is checked for interlayer insulation after winding. The electrical parameters such as resistance, inductance and capacitance of each coil are measured and recorded.
Cores : The core built from lamination is checked for air-gap, regimens and eddy current losses.
Ratio : The basic ratio test with the help of ratio meter is conducted to check the proper polarity and ratio of instrument transformers.
Drying of Coils : Each coil is checked for through vacuum drying by checking tan delta of the coils.
Transformer Oil : Before filling the transformer oil, it is checked for BDV, tan delta, specific resistivity and PPM.
Leak Test : Each transformer is checked for leak test after applying positive pressure.
QUALITY CONTROL OF RAW MATERIALS
The raw materials are purchased from quality and reputed suppliers. The name and the certificates of major components of sub-vendors is available on request. Further, the complete quality plan for checking major raw materials is followed as per the relevant IS and IEC standards. The major raw materials which are tested in ITCL in-house laboratory are as under:
1. Enamelled Copper Wire
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4. Lamination / Cores |
