Showing posts from 2018

Why Choice STL Member Type Test For Underground Power Cable

Each product needs verification before going to use in commercial operation, underground power cable also not out of that. User need to confirm carrying out proper taste that the underground cable is safely ready to use, but user no have test facility also can not depends on manufacturer own test. So, they need some third party test that can be reliable. The question is "who is the third party tester?" May be STL members organisation.What is STL ?
STL is shortened of Short-circuit Testing Liaison, means STL is an organization who provides voluntary collaboration internationally to meet HV/MV underground power cable testing services.
The objective of STL to harmonize and uniform the testing presentation, testing result and test data under a standard guide line.
Most of the cable users worldwide, their first choice for type test from STL members to find the reliable and good quality cable from a large number of cable manufacturer.
What Type Test Certificates Are Required?

How Measure Electricity Made Simple - Even Your Kids Can Do It

We are thinking about measuring electricity today, did you know that Ben Franklin helped us learn about electricity over 250 years ago?Even though we cannot see electricity, this does not mean that we cannot measure it. In fact, performing measurements is often the only way to tell whether electricity is actually flowing through a wire. Have you ever heard of a volt, an amp, or a watt? Do you know the difference between voltage, current and power? Fear? Not If You Use How Measure Electricity The Right Way!We can measure electricity in a number of different ways, but a few measurements are particularly important.
How Measure Voltage An electromotive force or potential difference expressed in volts. The voltage is a kind of electrical force that makes electricity move through a wire and we measure it in volts. In brief, voltage = pressure, and it is measured in volts (V). The bigger the voltage means the bigger the force, the more current will tend to flow. So a 6-volt battery cell will ge…

Smart Grid Technology and Application

What is Smart Grid Technology?A smart grid is an electricity network which includes a variety of equipped and energy measures including smart meters, smart appliances, renewable energy resources, and energy efficiency resources based on digital technology that is used to supply electricity to consumers via two-way digital communication. The term smart-Grid also known as digital-grid that refers to the new digital technology or to modernize the electrical network grid.
How Smart Grid Uses in Electricity Network System?The expression Smart-grid usually refers to a category of technology folk’s square measure exploitation to bring utility electricity delivery systems into the twenty first century, exploitation computer-based device and automation. These systems square measure created potential by two-way communication technology and PC process that has been used for many years in alternative industries. They’re getting down to be used on electricity networks, from the facility plants and…


Transmission and Distribution of Electrical Power Efficient and Smartly. Considering the main parts of a typical Transmission & Distribution network, here are the average values of power losses at the different steps:

1-2% – Step-up transformer from generator to Transmission line
2-4% – Transmission line
1-2% – Step-down transformer from Transmission line to Distribution network
4-6% – Distribution network transformers and cables

The overall losses between the power plant and consumers is then in the range between 8 and 15%.
Except some isolated individual small generation, most of national grid electricity is not used in the same place where it is generated. Meaning is that some individual small scale generator may produce electricity for industrial, commercial or residential purposes where it used; but mass scale produced electricity actually generates far distance from consumer or city center.   Sense is that long-distance electrical transmission and distribution systems are necessary…

Commissioning and Test Procedure of Power Cable and Equipment

Commissioning and Test Procedure:
Testing methods for power cable insulation depend basically on type and material of cable insulation. Cross-linked Polyethylene (XLPE) is now spreading widely for power cable insulation at the rated voltage of 66 to 500 kV world-wide.
Quick and easy understanding for commissioning test for transmission line and major equipment. Here specially focused on underground power transmission line, underground cable megger testing, cable fault location and main causes of cable fault, some manufacturing fault. You also find some megger test procedure for transformer or circuit breaker or common methods for insulation test or megger test.   
To see the slide view click below link,
Commissioning and Test Procedure of Power Line

Typical Electrical Test for Power Cable01. Resistance measurements through bolted connections with a low-resistance ohmmeter;
02. Insulation-resistance test individually on each conductor with all other conductors and shields grounded. Apply vo…


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