AC Static
Transformer Operated Watt-Hour and VAR-Hour Meters, Class 0.2S & 0.5S, are
high-precision instruments used for measuring both active and reactive energy
in power systems. These meters are designed for industrial and commercial
applications where accurate and reliable monitoring of energy usage and power
factor is essential. They are typically used in conjunction with transformers
to measure electrical energy and reactive power with high accuracy. Class 0.2S
meters offer an accuracy tolerance of ±0.2%, while Class 0.5S meters allow for
a tolerance of ±0.5%. BIS certification ensures that these meters conform to
the stringent standards set under IS 14697 for performance, accuracy, and
safety.
Introduction
The Ministry of Commerce and Industry, through the Department of Promotion of Industry and Internal Trade (DPIIT), has mandated BIS certification for AC Static Transformer Operated Watt-Hour and VAR-Hour Meters, Class 0.2S & 0.5S, as per Indian Standard IS 14697. This regulation, effective from January 1, 2024, ensures that the meters meet critical accuracy and reliability standards before they can be marketed in India. The ISI mark, issued by BIS after certification, indicates that the meters comply with national standards, ensuring consumers and industries have access to reliable energy measurement equipment.
Why is BIS Certification Necessary for AC Static Transformer Operated Watt-Hour
and VAR-Hour Meters?
BIS
certification is vital for AC Static Transformer Operated Meters as it ensures
the accuracy and reliability of energy and reactive power measurements.
Accurate energy meters are essential for correct billing and for the efficient
operation of electrical systems. Inaccurate readings can lead to under-billing
or over-billing, making certified meters crucial for transparency in energy
consumption. Compliance with IS 14697 ensures that the meters will function
reliably in real-world applications, providing industries with trusted and
accurate data for energy management.
Overview of Indian Standard IS 14697
Indian
Standard IS 14697
defines the technical requirements for AC
Static Transformer Operated Watt-Hour and VAR-Hour Meters,
specifying performance and accuracy standards essential for reliable energy
measurement. The standard mandates that Class
0.2S meters exhibit a maximum permissible error of ±0.2%, while Class 0.5S meters must
stay within ±0.5%,
ensuring high accuracy. These meters are capable of measuring both active power (watt-hour)
and reactive power
(VAR-hour) with precision, making them crucial for comprehensive energy
management. The standard also emphasizes temperature
resistance and stability,
ensuring the meters maintain accuracy across a broad range of environmental
conditions and operating temperatures. Additionally, reliability is a key
requirement, ensuring that the meters perform consistently and durably over
extended periods, even in challenging industrial, commercial, and utility
environments. By adhering to these specifications, IS 14697 guarantees that the
meters provide accurate, stable, and reliable readings, which are vital for the
efficient management of electrical systems and energy usage.
Process for BIS Certification
The
process for obtaining BIS certification for AC Static Transformer Operated
Watt-Hour and VAR-Hour Meters under IS 14697 follows several steps to ensure
compliance with the required standards:
Documents Required for BIS Certification
To apply
for BIS certification for AC Static Transformer Operated Watt-Hour and VAR-Hour
Meters, manufacturers need to submit the following documents:
These documents are crucial for BIS to assess the manufacturer's ability to comply with national standards.
Conclusion
BIS
certification for AC Static Transformer Operated Watt-Hour and VAR-Hour Meters,
Class 0.2S & 0.5S, under IS 14697 ensures that the meters meet stringent
accuracy, performance, and safety standards. Certified meters offer industries
and consumers a guarantee of reliable energy measurement, essential for correct
billing, energy management, and operational efficiency. Manufacturers seeking
to enter the market must undergo the BIS certification process to ensure their
meters comply with Indian standards and gain consumer trust. EVTL India offers
expert consultancy services to help manufacturers navigate the BIS
certification process smoothly, ensuring compliance and timely certification
for their products.
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