Electric Meter and Its Working Principal

The amount of consumed electrical energy is measured by Electric meter or energy meter. Kilowatt hour is the most common unit of measurement on the electricity measurement. It is similar to the amount of energy that is used by a load of one kilowatt hour over a period of one hour.

This kWh meter system is specifically designed to meet your specific requirements. Instantaneous voltage and currents are measured by these meters, and then they calculate its product and gives instantaneous power. Every customer has different energy monitoring needs and We can supply electrical energy metering equipment, gas, water or electrical consumption meters depending on those requirements.

To measure electrical power when there is no requirement of deeper analysis of the measured data, what you need is a Power Meter which is the most useful and simple instruments. Voltage (V) and current (A) is measured by it and the most important power results is also derived from them. For technicians and engineers who perform simple tasks like stand-by power measurements, single phase kWh meter are perfect. The crucial features include easy power, accurate and fast measurements along with simple operation on an instrument like the base unit.

Working Principles of a Power Meter

From decades conventional power meters are the same and these are pushbutton style instruments. However with modern and intuitive user, interfaces state of the art power meters are generally equipped. To a laptop or smartphone even more advanced systems can be connected via web app. It drastically simplifies the operation and remote monitoring is possible over any distance.

Applications for a Power Meter

For different applications a kWh power meter is quite easy to use, accurate and it is the preferred instrument for cost effective power measurement solutions. Few applications are: Battery or DC driven device evaluation, efficiency measurement for industrial motors, production line testing of electric devices, evaluation of large current equipment, quality assurance, rotating machinery, calibration labs, for installation and maintenance tasks and partly for R&D. It is even used for measuring GRID power.

You just need to find a reliable supplier online that can give you the best kWh power meter online at the best price. Follow us on Twitter

Know About the Basic Components of a Transformer

An electric transformer is a static device, which through electromagnetic induction transmits power in different voltage rating from one circuit to another. In stepping-up or stepping down the voltage level it plays a huge role. It consists of various components and if you want to know the device better then you should have knowledge of its each and every part. Below is given few of its basic components that you should know, so, let's have a look at them.

Tap Changer: In order to reduce the current load during the working of the device it is installed on high-voltage, low-current winding. It even allows in variable turn ratio. By adjusting a number of turns in one winding it can regulate the output voltage.

Winding: In a transformer other major component is its winding that is made of copper. Based on input as well as output supply, or voltage range it gets classified into two different factors. Maximum of its windings are made of copper as it has high conductivity and ductility. This device consists of primary and secondary windings that make transmission of electricity much easier. There are many voltage transformer wholesale that provide you the equipment in low price.

Insulating Materials: Usually insulating paper and cardboard are two different insulating materials that are utilized for isolating primary and secondary windings with the main core. Oil smoothens the working of the device and it also falls into the same category. In improving its performance it plays a major role.

Core: For the transformer it acts as a major support and for the flow of magnetic flux it provides a low reluctance path. On the voltage level, current and frequency its diameter is totally dependent and it is directly proportional to iron loss.

Cooling Tubes: In lowering down the heating level of the transformer oil these tubes are ideal. In ensuring the proper circulation and smooth operation of the device their cooling is important.

Explosion Vent: The major problem is the explosion that occurs due to the rise in the transformer oil temperature. The use of explosion vent is compulsory in the device to eject the boiling oil reaching the main point. You will even find electric transformer supplier in your area who supplies these equipment. Follow us on Facebook

AC Contactors and its Applications

Contactors and relays are often considered similar. You will regret if you ever specify a relay in a situation that calls for a central air contactor. Both switches are electrically operated and are employed for control and switching of loads. Contactors can handle up to 10A or above, whereas relays operate below 10 amps.

Difference between Contactor and Relay

Relays          

It is mainly used for switching small electronic circuits, control and automation circuits and protection circuits.           

It is used in circuits with lower ampacity.  

It is very smaller in size.      

It has at least two NO/NC contacts.            .

Contactors

In few cases auxiliary contacts are also provided.

It is used in circuits with both low and higher ampacity.

Even used in the switching of lights, motors, capacitors etc.

It contains minimum of one set of three phase power contacts.

Compared to relays these are larger.

Applications of Contactor

Relays are reserved for single phase whereas three phase applications call for contactors. Reason behind it is that a relay only has a common contact that connects to a neutral position. Without any common circuit a contactor joins two poles. AC compressor contactor is good for situations up to 1000 volts while relays are comfortable in situations up to 250 volts AC.

It becomes necessary to consider the function that you want the component to serve in your system. In situations where an overload can take place contactors come as a rescue and the failure to de-energize the circuit will keep people and/or the system in danger. Relays can never provide this protection.

Thus, the use of contactors is typically to switch slighting systems, high-current motors and capacitors. You can also fit contactors with auxiliary contacts to provide them the capability of operating in a normally closed condition. In such configuration, switching can take place irrespective of whether the contactor’s coils are energized or de-energized.

The Bottom Line

The primary situation involving use of ac contactors is any high-powered circuit having an overload condition taking place. This is very much true if you leave the circuit in an energized state and this will create a hazardous environment for people as well as for any equipment. Follow us on Facebook