BIS-ISI-CERTIFICATE
IS 16444 Part 1
A.C. Static Direct Connected Watt Hour Smart Meter Class 1 and 2
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1. Summary about A.C. Static Direct Connected Watt Hour Smart Meter Class 1 and 2
These smart meters are used for measuring electrical energy consumption in residential and commercial installations. Direct connected meters are installed without external transformers.
2. Why BIS Certificate is Mandatory for A.C. Static Direct Connected Smart Meters
BIS certification is mandatory to ensure measurement accuracy, electrical safety, and interoperability in power distribution systems.
3. What is BIS Certified for A.C. Static Direct Connected Watt Hour Smart Meters
BIS certification verifies compliance with Indian Standards covering accuracy class, electrical safety, communication features, and durability.
Tests required for A.C. Static Direct Connected Watt Hour Smart Meter Class 1 and 2
| Title | Mandatory/Optional |
|---|---|
| Metering requirement / General Constructional requirement | Required |
| Insulting Properties (ac High Voltage test) | Required |
| Insulation Properties (Insulation resistance) | Required |
| Accuracy requirement (Limit of Error due to variation of current) | Required |
| Accuracy requirement (Starting Condition) | Required |
| Accuracy requirement (No Load condition) | Required |
| Electrical requirement (Power consumption) | Required |
| Electrical requirement (Influence of supply voltage) | Optional |
| Electrical requirement (Short time over current) | Optional |
| Electrical requirement (Influence of self- heating) | Optional |
| Electrical requirement (Influence of heating) | Optional |
| Accuracy requirement (Meter Constant) | Required |
| Accuracy requirement (Repeatability of Error) | Optional |
| Clearance & Creepage distances | Optional |
| Display of values | Required |
| Output Device | Required |
| Display | Required |
| R F Technology Requirements | Optional |
| Test of Load Switch | Optional |
| Data Exchange | Optional |
| Test of smart meter communicability | Optional |
| Functional Requirement | Optional |
| Electrical requirement (Immunity to earth fault) | Optional |
| Electromagnetic Compatibility | Optional |
| Accuracy requirement (Limits of error due to influence quantities) | Optional |
| Accuracy requirement (Ambient temperature influence) | Optional |
| Mechanical Requirements (Shock Test) | Optional |
| Mechanical Requirements (Vibration Test) | Optional |
| Mechanical Requirements (Spring Hammer Test) | Optional |
| Mechanical Requirements (Protection against penetration of dust & water) | Optional |
| Test for Climatic Influence | Optional |
| Insulation Properties (Impulse Voltage Test) | Optional |
| Terminal Blocks and Terminal Cover | Optional |
| Mechanical Requirements (Resistance to heat and fire) | Optional |
4. Benefits of BIS Certification for A.C. Static Direct Connected Watt Hour Smart Meters
- Ensures accurate energy measurement
- Mandatory for utility and consumer use
- Improves billing transparency
- Enhances grid reliability
- Builds trust with utilities and consumers
Disclaimer.
The contents of this update are provided for general informational purposes only and do not constitute legal advice. Readers are encouraged to consult with professional legal counsel before taking action based on this information.
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