Manufacturer of Isolators / Stockiest of Over Head Line Materials / Govt Contractors.
What is a Class A Power Quality Meter?
A Power Quality Meter (PQM) is an advanced device that records and monitors parameters like:
Voltage and frequency variations
Harmonics and distortions
Power factor
Load profile and consumption trends
A Class A PQM, certified under IS 14697 standards, guarantees the highest level of accuracy, ensuring that data shared with MSEDCL is precise and reliable.
The Power Quality Meter shall be capable of recording and analyzing power quality parameters in accordance with IEC 61000-4-30 Class A methodologies and shall also meet the provisions of IEC 62586-2
It should measure and monitor the following parameters:
Supply frequency
Supply voltage magnitude
Flicker levels
Voltage swell events
Voltage interruptions
Voltage harmonics
Current harmonics
Voltage inter-harmonics
Current inter-harmonics
Voltage unbalance
Data for harmonics report (IEEE 519 -2014) )
Data for harmonics report (IEEE 519 -2014)
PQ event report (Sag, Swell, Interruption, Rapid voltage change.
Power Quality Meters are not just about compliance—they are essential tools for ensuring safe, reliable, and efficient energy use.
Power quality can be monitored centrally.
Poor power quality (like voltage sags, swells, or harmonics) can damage sensitive industrial equipment. PQMs help identify and prevent these issues.
By monitoring energy patterns, PQMs help industries reduce energy losses, optimize power factor, and avoid unnecessary costs.
Data from PQMs helps MSEDCL and MERC ensure grid stability and quality of supply for all consumers.
In short: Power Quality Meters safeguard your plant’s equipment, improve efficiency, and ensure regulatory compliance.
At Balaji Engineers, we recommend and supply Secure meters, a globally trusted brand known for:
✅ Class A accuracy
✅ Robust build quality for industrial use
✅ Seamless integration with MSEDCL data-sharing systems
✅ Reliable after-sales support & calibration
With our technical expertise, we ensure a hassle-free supply, installation, and commissioning of Secure PQMs at your facility.
A PQM is a device used to monitor, record, and analyze power quality parameters such as voltage, frequency, harmonics, flicker, sags, swells, and interruptions. A Class A PQM, as per IS 14697 and IEC 61000-4-30 standards, ensures the highest accuracy.
The PQM must meet:
• IS 14697 (Indian Standard for energy meters)
• IEC 61000-4-30 Class A (measurement methods)
• IEC 62586-2 (performance requirements)
As per specifications, the PQM should measure:
• Supply frequency
• Voltage magnitude
• Voltage unbalance
• Flicker
• Voltage sags, swells, and interruptions
• Voltage & current harmonics and inter-harmonics
• Applicable for three-phase, four-wire HT systems (3P4W)
• Suitable for both indoor and outdoor installation
• Must support rated secondary voltage of 3×63.5 V and configurable secondary current (1A/5A)
The PQM should work with both self-powering and auxiliary power supply options, ensuring continuous operation.
HT consumers can source Class A Secure Power Quality Meters through trusted suppliers like Balaji Engineers, who also provide installation, commissioning, and after-sales support.
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Partner with Balaji Engineers for Secure Class A Power Quality Meters—from supply to installation and ongoing support.
