Activity/Objective:
This activity is maintaining the National Standards for AC High Voltage and High Current ratios at power frequencies (50 Hz) by using Standard High Voltage Ratio Measuring System (HVRMS) and Standard Current Transformers upto 100kV and 5kA, respectively. This activity is also maintaining the National Standards for the calibration and measurement of AC High Voltage Capacitance and Tan δ upto 200kV at 50Hz by using Standard High Voltage Capacitors & High Precision C, L & Tan δ Measuring System.

This activity is providing Apex Level Calibration Services for Voltage Transformers, Voltage Transformers Test Sets, HV Probes, HV Break Down Test Sets, Voltage Transformer Burdens, AC High Voltage Sources, AC HV Capacitors, AC HV Dividers, AC kV Meters, HV Capacitance & Tan δ Bridges, etc. Similarly, on the AC High Current side for Current Transformers, Current Transformer Testing Sets, AC High Current Sources, Clamp Meters, Current Probes, CT Burdens, etc.

• Dr. Paramita Guha
  Principal Scientist
  Email: paramita.guha@nplindia.org 
  Ph: 011-4560 8531
  
  
• Dr. Arun Ram Prasath R T
  Scientist
  AC High Voltage and Current Metrology Section

AC High Voltage and Current Metrology Section
CSIR-National Physical Laboratory
New Delhi-110 012
Phone: 45608597/ 9317
E-mail: