Calibration Reference Standards
Providing NABL accredited calibration services for 1-phase and 3-phase energy meter calibrators, reference standards, power analyzers, and CT/PT reference standards — all traceable to national standards.
Instruments We Calibrate
All Types of Test Benches
Energy meter test benches of all makes — Zera, MTE, Secure, SANDS, Songyong, KOCOS, Radian etc.
1-Phase & 3-Phase Energy / Power Calibrators
Reference calibrators used to calibrate energy meters and power analyzers
1-Phase & 3-Phase Voltage & Current Sources
Precision AC voltage and current source calibration for test, CT, and meter verification use
All Types of HT & LT Test Kits
HT and LT field test kits of makes MTE, Zera, Secure, SANDS, Songyong, KOCOS, Radian etc.
Standard PT — Class 0.05
Reference potential transformers of class 0.05 used as working standards in calibration labs
Reference CT — Class 0.005
Reference current transformers of class 0.005 for highest accuracy CT calibration
MTE K2006 & ZERA MT3000 — SDES Reference Standards Lab
MTE K2006
3-Phase Reference Standard Calibrator
ZERA MT3000
Energy Meter Test System
Traceability Chain
All reference standards are calibrated periodically and traceable to national standards maintained by the National Physical Laboratory (NPL), India.
Accreditation Details
- NABL Certificate: CC-2288
- Location: Permanent Lab & On-site
Related Services
Frequently Asked Questions
Traceability means our reference standards are themselves periodically calibrated against national standards maintained by NPL India, forming an unbroken chain of comparisons back to the SI unit definitions.
Our reference potential and current transformers are 0.05 and 0.005 class — significantly tighter than the equipment we calibrate, as required for a valid calibration.
We maintain a range of NABL-traceable reference standards and calibrators used across energy meter, CT/PT and power quality calibration — see the equipment listed on this page for specifics.