NABL Accredited · CC-2480 · Est. 2004 · Gujarat's Trusted Calibration Lab
NABL-accredited calibration for 3-phase power meters, energy meters (kWh/kVARh), power analysers, and CT assemblies. IEC 62053. Class 0.2S to Class 2. All makes.
±0.2%
Accuracy
0.2S–Class 2
Class
IEC 62053
Standard
IEC 62053
3-Phase Energy & Power Meters
NABL Accredited
CC-2480
— WHAT IS THREE PHASE POWER METER CALIBRATION —
Think of a quality lab that relies on a three phase power meter for daily measurements. If it has drifted even slightly from its true value, every reading becomes unreliable — leading to defective products, failed audits, or safety risks. Regular calibration is the only way to confirm your instrument is telling the truth.
Three Phase Power Meter calibration means comparing its readings against a NABL-traceable certified reference standard at multiple test points, recording the deviations, adjusting where possible, and issuing an NABL certificate — accepted by ISO 9001, IATF 16949, and all quality auditors.
Compare readings against a NABL-traceable reference standard across the full measurement range.
Adjust or document deviations so your instrument reads within accepted tolerance.
Issue a NABL-accredited certificate (CC-2480) with full traceability documentation.
— INSTRUMENTS COVERED —
Panel Power Meter / 3-Phase Energy / Transducer / Power Analyser / CT Assembly · IEC 62053 · NABL
3-phase power analyzers for comprehensive three-phase power measurement.
3-phase energy meters for three-phase electricity consumption monitoring.
Three-phase digital wattmeters for active power measurement in 3-phase systems.
Three-phase kWh meters for energy billing in industrial installations.
3-phase VAr meters for reactive power monitoring in three-phase networks.
3-phase power quality meters for harmonics, THD, and PQ analysis.
— OUR PROCESS —
3-phase power meter received. Phase configuration (3W or 4W), CT ratio (if CT input), voltage range, and current input documented.
NABL-traceable 3-phase power standard (synchronized V and I sources) connected. Phase angle and power factor set precisely.
Active power calibrated at 5 setpoints at PF=1 (balanced 3-phase). W per phase and total 3-phase W verified against 3-phase reference.
VAR, VA, and PF readings verified at 0.5 power factor lagging. Reactive energy (kVARh) calibrated for applicable meter types.
For energy meters: 3-phase kWh percentage error tested at rated load and minimum load. IEC 62053-22 sequence for Class 0.2S, 0.5S meters.
NABL CC-2480 certificate with 3-phase power data, deviations, uncertainty (k=2), IEC 62053 / IEC 62053-22 traceability.
— STANDARDS & COMPLIANCE —
IEC 62053-22
Class 0.2S & 0.5S Active Energy
IEC 62053-23
Reactive Energy Meters
IEC 61869
Instrument Transformers (CT)
ISO/IEC 17025
NABL Accreditation Standard
Prism holds NABL CC-2480 under ISO/IEC 17025:2017. 3-phase power and energy meter certificates accepted by ISO 9001, energy audit bodies, and all process industry QMS audit bodies.
— NON-NABL CALIBRATION —
For routine maintenance, bulk calibration, or internal QC checks where a full NABL certificate is not mandatory — Prism offers cost-effective non-NABL calibration using the same NABL-traceable reference standards and trained engineers.
All non-NABL work uses NABL-certified reference standards — readings are still reliable and defensible.
Without full NABL documentation, instruments return faster — ideal for urgent production schedules.
Non-NABL calibration costs less — practical for large batches or routine periodic checks.
Available at your facility or at our Vatva lab — same quality, more flexibility.
— AREAS WE SERVICE —
Courier pick-up and delivery. 1-day turnaround for most 3-phase meters.
Why Choose Prism
Since 2004, every NABL 3-phase power meter certificate from Prism has been accepted by ISO 9001 and energy audit bodies — no rejections.
— FAQ —
Get In Touch
Share the make/model, class, phase configuration (3W/4W), and quantity. We respond within 2 business hours.
— FROM OUR BLOG —
Current transformers (CTs) are the foundation of industrial energy metering and protection relay systems. NABL-certified CT calibration per IEC 61869-2 ensures accurate energy billing and reliable protection.
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Power quality analysers are essential for BEE energy audits and power system troubleshooting. NABL-certified calibration ensures accurate power measurements for compliance and decision-making.
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Digital multimeters (DMMs) are the universal electrical measurement tool. Annual NABL calibration ensures your DMM meets specified accuracy and your electrical measurements are traceable.
Read MoreNABL Accreditation Disclaimer
Calibration services are provided under NABL Certificate CC-2480 in strict accordance with our officially approved scope of accreditation (ISO/IEC 17025:2017). Parameters falling outside our active NABL scope are processed with standard metrological traceability to NPL/BIPM national standards.