a.c. Static Transformer Operated Watthour and Var-Hour Meters – Class 0.2 S, 0.5 S & 1 S

1. Scope:

The standard defines the scope and purpose of the specification, which is to establish requirements for static electricity meters used for measuring electrical energy and reactive electrical energy consumption. It specifies the acceptable accuracy classes (0.2 S, 0.5 S, and 1 S).

2. Accuracy and Performance:

Requirements for the accuracy and performance characteristics of the meters, including specifications for measuring active energy (kWh) and reactive energy (kvarh). The standard specifies different accuracy classes to suit various applications.

3. Construction and Design:

Guidelines for the construction and design of the meters, ensuring that they are suitable for their intended applications and can withstand environmental factors and operational conditions.

4. Metrological Requirements:

Metrological requirements for the meters, which include accuracy under different conditions, testing methods, and criteria for calibration.

5. Testing and Inspection:

Procedures for testing and inspecting the meters to verify their compliance with the standard. This may include tests for accuracy, stability, and performance.

General and Constructional Requirements

a.c. High Voltage Test

Insulation Tes

Accuracy Requirements (Limits of Error)

Test of starting condition

Test of no-load condition

Power Consumption