## Metering Blog

CLOU GLOBAL TECHNOLOGY provides energy management products and customized solutions for efficient energy usage, cost reduction, and sustainability compliance.
Here we are publishing answers to your questions related to our products and services.
Please do not hesitate to reach out to us if you have any questions or queries. You can use our easily accessible contact form or can leave a comment below the relevant article to get in touch with us.

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• ### The Standard Transfer Specification STS

The Standard Transfer Specification (STS) has become recognised as the only globally accepted open standard for prepayment systems, ensuring inter-operability between system components from different manufacturers of prepayment systems.

• ### The four-quadrant diagram in electricity metering

The interactive diagram shows the relationship between the phase angle φ, apparent-, active- and reactive power respective energy in accordance with clauses 12 and 14 of IEC 60375.

• ### Why do I need a Vector Diagram?

Modern reference standards and calibration devices have usually a graphical function to show the relationship between the voltages and the currents.

• ### What are harmonics ?

Generally a harmonic is a integer multiple of the fundamental frequency (nominal fn). When we have a fn of 50 Hz, the 3rd harmonics is traveling with 150 Hz. We can have harmonics in the voltages and in the currents.

• ### Calculating Apparent Power: Vectorial vs Arithmetic Method

There are two commonly used methods to calculate the apparent power (VA). The traditional method is the vectorial calculation.

• ### What is Maximum Demand Measurement?

Demand is a measure of average power consumption over a fixed time interval. Maximum (or peak) demand is the highest demand recorded over the billing period.

• ### Technical vs Non-Technical Losses: What You Need to Know

Technical losses are coming from current flowing in electrical installations. They can not be avoided, but reduced by proper installation. Technical losses can be calculated.

• ### Personal Safety for electrical installations

Personal safety comes first when working with electricity. It's never a mistake to review the basics.