IS 13010
Electrical - AC watt-hour meters, class 0.5, 1 & 2
Summary
An A.C. Watthour Meter measures electrical energy consumed over time in alternating current circuits. Class 0.5, 1, and 2 indicate accuracy levels, with Class 0.5 being the most precise. These meters are widely used in residential, commercial, and industrial electricity billing.
Why BIS Certificate is Mandatory for a.c. Watthour Meters Class 0.5, 1 and 2 ?
BIS certification is mandatory to ensure accuracy, safety, and reliability of A.C. Watthour Meters used for billing. It prevents incorrect energy measurement, protects consumers from overcharging, and ensures compliance with Indian electricity regulations. Mandatory certification also stops the use of substandard or tampered meters.
What is BIS Certified for a.c. Watthour Meters Class 0.5, 1 and 2 ?
BIS certification for A.C. Watthour Meters confirms compliance with Indian Standards such as IS 13779 and relevant standards. It verifies accuracy class, electrical safety, environmental performance, and durability. Certified meters carry the ISI mark, ensuring they are legally approved for use in India.
Test required For a.c. Watthour Meters Class 0.5, 1 and 2
| Title | Mandatory/Optional |
|---|---|
| General & Constructional requirement | Required |
| Terminal Blocks, Terminal Cover & NonFlammability | Optional |
| Resistance to Heat and Fire | Optional |
| Clearances & Creepage Distances | Optional |
| Protection against penetration of dust and water | Optional |
| a.c voltage test | Required |
| Insulation Resistance | Required |
| Limits of Error due to variation of current | Required |
| Starting | Required |
| Running with no-load | Required |
| Direction of Rotation, Marking of Rotor | Required |
| Requirement of Prevention of reverse rotation, if provided | Optional |
| Register (Counting Mechanism) | Optional |
| Power Loss | Required |
| Effect of Self Heating | Optional |
| Heating | Optional |
| Meter Constant | Required |
| Repeatability of Error Test | Optional |
| Range of Adjustment | Optional |
| Independence of Adjustment | Optional |
| Sustained Accuracy Test | Optional |
| Running at Low Load | Required |
| Test of Material used in Dial | Optional |
| Short-Time Over Currents | Optional |
| Torque/ Speed Ratio Driving Torque Measurement Test | Optional |
| Shock Test | Optional |
| Vibration Test | Optional |
| Mechanical Strength of meter case | Optional |
| Impulse Voltage Test | Optional |
| Effect of influence quantities | Optional |
Benefits of BIS Certification for a.c. Watthour Meters Class 0.5, 1 and 2
1. Accurate Billing Assurance - BIS-certified meters meet strict accuracy requirements, ensuring fair and precise electricity billing for consumers and utilities.
2. Consumer Safety - Certification ensures electrical safety, reducing risks of fire, short circuits, and meter failures during operation.
3. Regulatory Compliance - BIS approval is legally required in India, allowing manufacturers and importers to supply meters without penalties or rejection.
4. Reliability and Durability - Certified meters are tested for temperature, voltage fluctuations, and long-term performance, ensuring consistent operation.
5. Trust and Market Acceptance - The BIS/ISI mark builds confidence among electricity boards, distribution companies, and consumers, improving brand value and acceptance in government tenders.