ELTEL CALIBRATION LABORATORY

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1 NABL ACCREDITED ELTEL CALIBRATION LABORATORY Our laboratory is NABL ACCREDITED in Electro-Technical Discipline as per the international standard IS/ISO/IEC-17025:2005 for both In-House & Site Calibrations. We have the facility for calibration of instruments designed for use by transformer manufacturers and power utilities. Eltel Industries, being a manufacturer, has a deep technical understanding of calibration requirements. Our Electro Technical Laboratory with its customized world class precision Standards facilitates to calibrate Instruments designed by transformer manufacturers and Power utilities. A highly skilled staff ensures accurate calibration & measurement of Instruments. We offer our valued customers the highest quality services that enable them to achieve better process control and quality systems.

2 Our Laboratory is NABL Accredited in Electro-Technical Discipline since 2014 as per the standard ISO/IEC-17025:2005 for both In-House & Site Calibration and have the facility for calibration of below equipments under NABL Scope: OUR UNIQUE STANDARDS Current Transformer: The uncertainty (CMC) of our lab is 83ppm & 0.6 min & our STD CT accuracy is 0.002% which is equal to NPL, New Delhi. Ratio & Phase Error STD: Only our lab has the unique facility to calibrate Ratio & Phase errors covering all ranges for Instrument Current & Voltage Transformer Test set using Direct method (Error introduced Directly). Turns Ratio: It has a Ratio Range from 1/1 to 5,000/1. Used for calibration of manual and Automatic Single and Three phase Transformer Ratio Meters. The accuracy is better than 0.01% over the entire range. PARAMETERS / INSTRUMENTS RANGE Current Transformers Potential Transformers Electronic Potential Dividers Current Burdens (1A & 5A) Potential Burdens (110V & 63.5) PRI:5A TO 6000A, SEC:5A & 1A 6.6kV to 33kV 1VA to 75VA 1.25VA TO 200VA Instrument Transformer Test Sets-Ratio & Phase error R.E: ±0% to 3%, VT,CT-1A & 5A P.E: ±0crad to 3crad Capacitance 45pF, 50Hz - 50kV Capacitance, Tanδ & Resistivity Test kits 200pF, Tanδ: 0.05% to 10% Capacitance & Tan delta measuring Turns Ratio meters High Resistance measuring Winding Resistance meters (Micro ohm meters) High Resistance meters, Meggars, Insulation Testers DC / AC Voltmeters DC / AC Ammeters Resistance Meters Frequency Meters DC/AC Voltage source DC/AC Current source Resistance source Frequency source up to 1000pF, Tanδ: 1.2X10-5 to 1.2X to 5000 Turns 10MΩ to 1TΩ 10µΩ &100µΩ up to100a, 1mΩ to 1kΩ 1kΩ to 1TΩ 0 to 1000V 0 to 10A 0 to 190MΩ up to 1kHz 0 to 1000V 0 to 10A 10Ω to 1GΩ up to 1kHz 2

3 CURRENT & VOLTAGE TRANSFORMER RATIO AND PHASE ERROR STANDARD CVRPS 2013 The CVRPS generates fixed Ratio and Phase Errors that enable the calibration of Instrument Current Transformer Test Sets and Instrument Voltage Transformer Test Sets using Direct Method. This unique standard allows the calibration of test equipments at different ranges of Ratio and Phase Errors. This facility is unique to the Eltel Industries Calibration Laboratory and to the best of our knowledge, is not currently available in any other NABL accredited labs. The best uncertainty of 80 ppm, 0.4 min is class leading and best available in the Industry. LOW RESISTANCE STANDARD This set of Precision Low and Medium Resistance Standards is from a leading Resistance manufacturer of discrete standards. We have a best uncertainty of 0.02% ranging from 1milliΩ to 1kΩ. They are used to calibrate low resistance Ohm Meters, Transformers Winding Resistance Meters. CAPACITANCE & TAN DELTA STANDARD SET UP This standard set up comprises of a SF6 filled Standard Capacitor, a Step down Voltage Transformer (11kV/ 110 V) & Dissipation Factor Error Standard. The Standard is capable of introducing Tan Delta from 0% to 10%. Using this standard set up, the Capacitance & Tan Delta Test Sets can be calibrated up to 10 kv. The best uncertainty 0.3% for Capacitance & 0.02% for Tan Delta. 5080A MULTI PRODUCT CALIBRATOR This is a Fluke Universal 5½ digit Calibrator and has the highest compliance with maximum burden up to 800 milli amps for AC and DC voltages and a voltage up to 50V for AC and DC currents. This unit is used to calibrate Multimeters and also used as a AC Current and Voltage source. 3

4 PRECISION CURRENT TRANSFORMER CALIBRATION SET UP PRECISION CURRENT TRANSFORMER (20 PPM) The precision Current Transformer along with 7200A High Current source covers ratios from 5A/ 5A : 5A/ 1A all the way upto 6000A/ 5A : 6000/1A with best overall uncertainty of 83 PPM which is on par with the best calibration laboratories. The ratio range provided covers all typically manufactured standard and commercial grade Current Transformers. AUTOMATIC INSTRUMENT TRANSFORMER TEST SET - AITTS PLUS This is a high accuracy comparator manufactured by Eltel Industries. This is used to calibrate Current Transformers and Voltage Transformers for Ratio Error & Phase Error. It has a best uncertainty of 55 PPM. DIGITAL POWER ANALYZER - WT210 The Power analyzer with a best uncertainty of 0.40% is used for calibrating Current Transformer Burdens and Voltage Transformer Burdens. 4

5 PARAMETERS SOURCE-IN HOUSE Parameter Range *Calibration Measurement Capability (+/-) DC Resistance 0.001Ω 0.065% 0.01 Ω 0.065% 0.1 Ω 0.02% 2 Ω 0.07% 10 Ω 0.02% 1000Ω 0.02% DC High Resistance 1k Ω to 1M Ω 31ppm 10M Ω 100ppm 100M Ω 0.02% 1G Ω 0.6% 10G Ω 0.6% 100G Ω 1.2% 1T Ω 2.4% Instrument Transformer Test Set R.E: ±0% to 3% R.E: 80 to 225ppm (VT) & (CT-1A & 50Hz P.E: ±0crad to 3crad P.E: 0.4min to 0.8min Capacitance and TANδ (Dissipation factor) 200pF, 0.05% to 10% Cap:0.6pF up to 50Hz Tanδ:0.02% to 0.08% Low resistance (Discrete) 10µΩ (100A) 3.6% 100µΩ (100A) 0.12% Capacitance 50Hz (UPTO 50kV) 0.17% DC Voltage 329mV to 32V 0.019% to 0.012% 32V to 1000V 0.012% to 0.016% DC Current 329µA to 3.2mA 0.12%-0.075% 3.2mA to 32mA 0.075% to 0.059% 32mA to 329mA 0.059% to 0.077% 329mA to 1A 0.077% to 0.17% 1A to 20A 0.17% to 0.58% AC 50Hz 32mV to 329mV 0.064% to 0.19% 329mV to 32V 0.19% to 0.12% 32V to 1000V 0.12% to0.37% AC 50Hz 329µA to 3.2mA 0.55% to 0.26% 3.2mA to 2.99A 0.26% to 0.12% 2.99A to 10A 0.12% to 0.3% 10A to 20A 0.3% to 0.60% DC Resistance (Discrete) 1Ω to 10Ω 1.3% to 0.18% 10Ω to 100Ω 0.18% to 0.047% 100Ω to 10kΩ 0.047% to 0.03% 10kΩ to 1MΩ 0.03% to 0.052% 1MΩ to 100MΩ 0.052% to 0.58% 100MΩ to 190MΩ 0.58% to 1.29% Frequency 45Hz to 1kHz 0.011% to 0.006% 5

6 PARAMETERS MEASURE-IN HOUSE Parameter Range *Calibration Measurement Capability (+/-) Current Transformer Burden (1A & 5A) 1VA to 1.0PF & 0.8PF, 50Hz 0.86% to 0.46% Voltage Transformer Burden (110V & 63.5V) 1.25VA to 0.8PF, 50Hz 0.43% Current Transformer Ratio Error and Phase Error Pri : 5A- 6000A Ratio Error: 83ppm Sec: 5A 50Hz Phase Error: 0.59min Capacitance & Tan 50Hz Cap 1.9kV upto1000pf 0.21% Tan delta 1.9kV: 1.2X10-5 to 1.2X % Potential Transformer Ratio error & Phase error 6.6kV to 33kV Ratio Error: 0.06% Phase Error: 2.35 min DC Voltage 100mV to 10V 0.01% to % 10V to 100V % to % 100V to 1000V % to % DC Current 100µA to 1mA 0.09% to 0.086% 1mA to 100mA 0.086% to 0.064% 100mA to 1A 0.064% to 0.082% 1A to 10A 0.082% to 0.20% AC 50Hz 100mV to 1000V 0.12% to 0.11% AC 50Hz 100µA to 1A 0.18% 1A to 10A 0.18% to 0.25% DC Resistance 10Ω to 100 Ω 0.046% to 0.016% 100 Ω to 1MΩ 0.016% to 0.013% 1MΩ to 10MΩ 0.013% to 0.047% 10MΩ to 1GΩ 0.047% to 2.3% 10Ω to 100 Ω 0.046% to 0.016% Frequency 45 Hz to 1kHz 0.012% ON-SITE Parameter Range *Calibration Measurement Capability (+/-) Current Transformer Ratio Error and Phase Error Pri : 5A- 6000A Ratio Error: 90ppm Sec: 5A 50Hz Phase Error: 0.65min Instrument Transformer Test Set R.E: ±0% to 3% R.E: 80 to 225ppm VT, CT-1A & 50Hz P.E: ±0crad to 3crad P.E: 0.4min to 0.8min Current Transformer Burden (1A & 5A) 1VA to 75VA 0.86% to 0.5% Voltage Transformer Burden (110V & 63.5V) 1.25VA to 200VA 0.45% Potential Transformer Ratio error & Phase error 6.6kV to 33kV Ratio Error: 0.06% Phase Error: 2.4 min 6

7 Eltel Industries' state-of-the art calibration technology will cover almost all electrical parameters related to the power industry. These standards are developed in our R&D Centre under the technical guidance of our expert Canadian consultant Mr. Oleh Iwanusiw. The Calibration Lab is staffed by a highly experienced team with a strong technical background. Our goal is to provide our customers with quick and timely support - talk to us about any questions or concerns regarding our calibration services. Eltel Industries, established in 1983, is a market leader in the manufacturing and development of test instruments for electrical power industries and utilities. Customers in over 50 countries rely on Eltel's original design technology, global accreditation and timely customer support, making Eltel a premier source for test instruments and calibration services that are renowned for accuracy and reliability. Based in India, Eltel's experienced team looks to optimize innovation and support, building strong and lasting relationships within the global industry. 7

8 Our Esteemed Customers includes... Leading Innovation Energypac Power Generation Ltd. ELTEL INDUSTRIES CALIBRATION LABORATORY: Plot No.39, KIADB Industrial Area, Veerapura, Doddaballapur, Bengaluru INDIA. TEL: , , , , FAX: CHENNAI: GURGAON: , MUMBAI: , KOLKATA: , , VADODARA: