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FAQ - FAQ

We have developed FAQ based on our experience and our interaction with various customers. We will continue to add more questions and answers as the need arises.

If your questions can not be solved, please write to us through the contact form. ROWWIN will attend to your queries get back to you ASAP.

 

Q. Why State Grid and Power Substation use ROWWIN Test Equipments ?

A. The State Grid and Power Substation understands the criticality of energy,and their relationship with the society economy and people's livelihood. As per the estimates almost 40 percent of the electricity generated in developing country is not accounted for.Of this, more than 10 to 15 percent can be attributed to technical losses, ROWWIN Test Equipments provide   thus saving much-needed revenue lost.

Q. What is the life span of ROWWIN Test Equipments ? 
A. The lifespan of the test equipments is determined by the equipments'design and component selection. An Test Equipment has to operate in a very hostile environment varying from extreme hot to very cold, dust and humid conditions. ROWWIN design takes care of various adversaries, it will be subjected to during the intended operation lifetime of the meter. Also components from only reputed manufacturer’s are being used. This ensures a life of more than 5 years for our Test Equipments. 


Q. Differentiate Single Phase, Polyphase and Three Phase Meters ?
A. Single Phase Meter -  An Electricity Meter consisting of one metering element and used to meter Single Phase services such as a residential service is known as Single Phase Meter.

Polyphase Meter - An electricity meter used for polyphase service power measurement. It may have 2, 2 ?  or 3 metering elements either self-contained or transformer rated type.

Three Phase Meter – A polyphase meter having 3 metering elements are referred as Three Phase meters.


Q. What is Meter Constant ?
A. The meter constant is a value expressing the relation between the energy registered by the meter and the corresponding value of the test output. In meters, this value is expressed in terms of impulses per kilowatt-hour (imp/kWh). Some meter manufacturers may refer it as Watt-hours per pulse (Wh/imp).


Q. What is meant by Phantom Loads ?
A. During meter testing, it is easy to obtain the desired test voltage from the power line.
However it is difficult to generate desired test current because different current values are required, depending upon the current rating of the meter under test. A phantom load is used for this purpose. It basically consists of a special loading transformer that steps the line voltage to a lower value,which is then applied through loading resistors (different values for different currents) to the meter under test to produce current. This concept is used by the Meter manufacturers for both portable phantom load set ups and test benches.


Q. What is a DSP ?
A. DSPs (Digital Signal Processors) are processors whose hardware,
software and instruction sets are optimized for high-speed numeric processing applications–
an essential for processing digital data representing analog signals in real time.


Q. What is MRI ? 
A. MRI (Meter Reading Instrument) is a data collector (computer or more precisely a hand held computer), to retrieve energy consumption related datas from the Electronic Meters using optical sensors. Generally the meter reader takes MRI to the customer site and connects it to the meter. Data is transferred from the meter to the MRI. The meter reader brings the MRI to the billing station. The data is downloaded into the main billing computer of the utility board.


Q. What are the benefits of using MRI ?
A. The benefits are :
The process of meter reading is fast.

Moreover these are accurate and provide no scope to the meter reader to alter the reading.

No time lag between reading the meter and billing, as no paperwork involved.

Can generate statistics of various


Q. What is infrared?
A. Every object emits thermal radiation when its temperature is above absolute zero.
Infrared radiation is electromagnetic radiation whose wavelength range is 0.78~1000 that can't be detected by human eye. Infrared thermal camera is the instrument that it can measure the infrared energy. It reflects object's infrared radiation, that's temperature scene.

Q. What is Infrared imaging?
A. The higher the object's temperature, the greater the IR radiation emitted.
Infrared allows us to see what our eyes cannot. Infrared thermography cameras produce images of invisible infrared or "heat" radiation and provide precise non-contact temperature measurement capabilities. Nearly everything gets hot before it fails, making infrared cameras extremely cost-effective,valuable diagnostic tools in many diverse applications.
And as industry strives to improve manufacturing efficiencies, manage energy, improve product quality, and enhance worker safety, new applications for infrared cameras continually emerge.

Q. Why measure temperature?
A. Finding a problem with an infrared camera is sometimes not enough. In fact, an infrared camera image alone without accurate temperature measurements says very little about the condition of an electrical connection or worn mechanical part.Many electrical targets are operating properly at temperatures that are significantly above ambient. An infrared image without measurement can be misleading because it may visually suggest a problem that does not exist.

Q. Why use infrared?
A. Nearly everything that uses or transmits power gets hot before it fails.
Cost effective power management is critical to maintaining the reliability of your electrical and mechanical systems. And today, no one would argue that infrared thermography is one of the most effective proven predictive maintenance (PM) technology available to quickly,
accurately and safely locate problems prior to failure.Finding and fixing a poor electrical connection before a component fails can save you the much greater costs associated with manufacturing downtime,production losses, power outages, fires and catastrophic failures

Q. About Infrared Night Vision
A. Infrared night vision technology has initiative and passive

Q. About Gas Imaging
A. Gas infrared imaging is use of gas characteristics that it absorbs particular wavelength infrared energy,make it is possible to see the image of the invisible gas leakage through gas infrared camera, that it can rapidly detect the gas leakage location.

Q. About Infrared Window
A. Infrared window is a optical component which can be through the visible light,
infrared and ultraviolet, with IR window installed in the electrical cabinet of the shell,
it is easy to have non-destructive testing for facilities of inside the electrical cabinets.

 
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