About Bornika

The Borna Niroo Karan company was stablished on 1390/08/01, by relying on the experience of 40 years of commercial product based on the preparation of Reyhany Yazdi , high quality, standard and consistent with science and technology and provide after sales services principles and in accordance with customer requirements, having extensive experience, high ability, benefits from a dynamic and up to date as well as staff having the exclusive representation of the famous brands in the world, in the field of import, production and distribution of a vast and varied products in electricity field.

Newest Articles

What is transformer

Transformer means that electrical energy by two or more coils and electrical inductance of a circuit to another circuit via transfers. This means that the current flow in the circuit (the primary) creates magnetic Ykmydan around the first coil, the magnetic field in turn creates a voltage in the secondary circuit is adding a second circuit this voltage can lead to a secondary flow.

Electromagnetic threats

Risks of electromagnetic permanent existence in the space around us, such as natural hazards like lightning and risks such as radar systems, diesel generators, welding machines, wireless or any other radiation, it is increasingly realized the importance of safety, electromagnetic comprehensive.


Autotransformer (sometimes called "Atvfvrmr" called) so that only one coil is an electrical transformer. Autotransformer coil tap at least three points for the electrical connection that they say. Input voltage and electrical load connected to two taps and a tap at the end of the coil is common. Each pulse may be associated with different voltage sources and load.

Types of Transformer Testing

For confirming the specifications and performances of an electrical power transformer it has to go through numbers of testing procedures. Transformer is one of the important equipment in power system. So, testing the transformer is pretty serious issue.In this paper, the different types of transformer testing are mentioned.

Capacitor contactors

The contactors for switching capacitors in automatic capacitor plates are used.

Type of Ammeter

Today Ammeters in terms of mechanism of actiondivided into several types, each with a specific application.