All Essential Facts About Hipot Testing

The shorter version of high voltage or high potential is known as Hipot. The hipot test is called as the Dielectric Withstand Test. This test is a checking for good isolation. It is conducted to ensure that no current is going to flow from one end to another. Therefore, it is just the reverse of the continuity test. The voltage during the test is really high which ensures no flow of the current. Hipot test kit purchased from reliable manufacturers can fetch you genuine results of the testing.

Why Is Hipot Testing Important?

The hipot testing is known as the non-destructive test, which helps to determine the adequate amount of electrical insulation. Applying this high-voltage test to any device for a certain period of time is quite beneficial. It helps to make sure that the insulation is more than just marginal.

This test helps in finding out any crushed or nicked insulation, braided shielding, conductive contaminants collected all around the conductors, cables having tolerance errors, terminal-spacing errors, etc. You also get to know about any clearance distance and inadequate creepage which may have got introduced at the time manufacturing. Quality Hipot test equipment can offer you state-of-the-art solutions and testing as per your industry requirements. 

Test Method: 

Generally, hipot testers connect one particular side of a supply to the Earth ground. The other part gets connected to a testing conductor. Therefore, basically, there are two places for connection- ground or high voltage. This ensures that the supply is isolated totally from any other contacts. When the insulation is adequate between both the ends, applying high voltage would cause a little amount of current to flow. This tiny amount of current flow is acceptable but there must be no breakdown of the solid or air insulation. Hipot tester India are compact and powerful devices, which allow multi-functioning to the users. 

Some Vital Points To Be Noted In The Testing Process: 

* Get this testing done only by qualified electrical workers

* The switches or circuit breakers must be opened so that the circuit becomes isolated

* No cable or equipment which are not being tested must be connected to the circuit under the hipot test

* Wearing insulating gloves is immensely important during the testing process

Reputed Hipot tester manufacturers India not just offer their customers with high-end products for testing but also extend technical assistance in every manner. 

Buying a Scanning Electron Microscope

Like many scientific and technical equipment such as voltage transducer, current probe and XRF Analyzer, scanning electron microscope come in many shapes and forms and also varying levels of accuracy and intricacy.
 
There are many factors to consider when buying a scanning electron microscope.

Here's a short guide on buying:

Before venturing into the guide, the three questions one should have when buying a scanning electron microscope include whether the samples need to be viewed in their natural state, the minimum resolution needed to observe the features of interest on the sample and how large samples need be enlarged.

The nature of your application is very important, in addition to asking questions relating to timing and budget. Determining the right application helps identify the right type of equipment, whether you are considering purchasing voltage transducer, current probe, scanning electron microscope or an XRF analyzer.
 
The choice of the type of emitter is definitely an important one when buying a SEM. There are three types of emitters, namely field emission (FE), tungsten (W), and lanthanum hexaboride. These are the sources used for electron emission. Detecting these electrons is done using three methods including standard Everhart-Thornley (E-T) detector, an upper detector, or a backscattered electron (BSE) detector.
 
If you are looking for a SEM for high-end nanotechnology applications for instance viewing individual carbon nanotubes or advanced semiconductor devices, you will need a SEM with an upper detector.

LAB SEMs may also need to view samples at higher accelerating voltages. This might require coating the sample with a thin metallic layer.
 
However, the need to do this coating reduces in FE-SEMs because FE-SEMs can image the samples at very low accelerating voltages. Otherwise, you can view samples in their natural state without coating, on a LaB SEM by using a BSE detector combined with control of vacuum pressure.

This method, will, however, lower the resolution. Today, VP FE-SEMs are applied to deal with this problem of compromising on resolution.

Of course, the resolution is a factor you consider when choosing a SEM because various applications have various resolution requirements.

Price is at the center of the resolution factor although price is also a factor of automation, chamber size, and optional SEM accessories, such as an elemental dispersive spectroscopy (EDS) system. Resolution affects the price greatly. The resolution a SEM provides at low-accelerating voltages determine its selling price.

Price is higher with the more the SEM gets closer to 1 nanometer.

Diagnose Electric Motor Damages with These Simple Steps

Electric motors are the core of every light and heavy machine that keeps the production process going on. With so many motors that run simultaneously, it is essential that each one of them run at full capacity. When an electric motor gets damaged, it can cause failure in the whole machinery and even the ones connected to it. Therefore, factories ensure that regular checks get carried out to maintain the integrity of the motors. There is multiple electric motor testing equipment like the torque dynamometer, torque tester for stepper motors, ultra high-speed motors, and more.

It is good to be in touch with electric motor testing equipment suppliers. However, many times when the motor fails, there are simple checks that can ease the repair procedure. An Ohmmeter is a helpful instrument for these maintenance checks. Before beginning the motor test, remember to disconnect it from all power supplies. At no time during the checking process does the motor require electricity. Additionally, opening it up while power is still on can prove fatal to one’s life. After conducting these preliminary checks, it is time to diagnose the damage.

1.Outer Shell of the Motor: There are signs on the outer frame of the motor that can indicate the underlying problems. If not fixed, these shorten the life of the motor. Check for damaged mounting holes or feet, darkened paint, dirt and other forms of debris in the motor windings. Overloading, wrong application, and excessive heating can result in these problems.

2.Failures in the Bearing: Multiple problems result from the faults in the bearings of the electric motor. These bearings allow the rotor assembly to rotate smoothly inside the frame. They are located at both the ends of the motor. Check the condition of the bearings by spinning the rotor with one hand, while putting the other hand on top of the motor. Watch closely, try to feel and hear obstructions, if any. Pull out and push the shaft to see how much movement occurs. The least the better!

3.The Windings: Short circuits in the windings often cause the electric motors to fail. You would need an Ohmmeter now to check the resistance value. Choose the highest scale in the meter. The value of the ohmmeter should be in millions or at least in the larger six-figure digits. Make sure your hands do not touch the metal probe tips as that would result in inaccurate data.

4.The Capacitor: Sometimes the motor does not start because of a damaged capacitor. A metal cover protects the capacitor. Look for signs of oil leakage, bulging container, holes, smoke residue, or burning smell. You can use the ohmmeter again to check if the meter’s battery discharges the capacitor. If it does not, you could have to replace it.

Many A-grade companies offer several testing instruments so that industrial machinery can run at their full potential. You can get in business with such companies who, among other services, are environmental test chamber manufacturers in India. This would help your firm in continuing its operations without hiccups.

The Modern History of Stroboscopes and Popular Uses of the Stroboscopic Principle

The year was 1832 when Joseph Plateau used a disc with radial slits, which he turned to view images on another rotating wheel. He called it the “Phenakistoscope” and you can tell he was quite proud of what he did. Around the same time, Simon Ritter from Austria invented a similar device, which he called the “Stroboscope.” This was an independent invention and the name stuck. Stroboscopes are still in use today. This device has done its bit in changing the face of the world and making many jobs easier. The internet offers great deals on plating thickness tester, thermal test chamber, coating thickness tester, coating thickness analyzer, stroboscope prices in India for companies and individuals.

Origin and Function

Stroboscope has its origin in the Greek words “strobos” and “skopein” which together form the meaning “to look at a whirlpool.” That defines this instrument exactly as it is. A stroboscope employs a rotating disk with slits or holes to view an object moving cyclically in any way the viewer wants. Another way to do this is by flashing light at consistent intervals to view the rotating object. Take the example of a fan. When it rotates, its blades seem invisible. However, if you flash a light at quick intervals at it, you can see the blades moving slowly or completely stationary.

Primary Applications

A stroboscopic principle is used to study rotation, reciprocation, oscillation or vibration of objects. One of the first applications of this principle was in the production of moving pictures. There were many toys in the early days of this invention that used the stroboscopic effect. These led to the usage of vibrating mirrors that were known as Mirror Galvanometers. Etienne Oehmichen patented the electric stroboscope in 1917, which was the first of its kind. He also built a camera at the same time, which was capable of shooting 1,000 frames per second.

The stroboscope soon found its way into the industries when Harold Eugene Edgerton invented the electronic stroboscope. This became the most popular invention and made it convenient to study machine parts while they ran. Stroboscopes are very important in the commercial production industries to scrutinize machines in motion. Its technology has advanced a lot since those early times of stroboscope’s invention. It is also used to measure cyclic speed and also as timing light to set the ignition time of internal combustion engines.

Other Purposes

Stroboscopes play an important role in the field of medicine as well. Doctors view and diagnose problems of the vocal chord with it. The patient has to hum or speak into a microphone, which turns on the stroboscope light at the same or a slightly different frequency. Another popular use of stroboscopes is in clubs and discotheques. Flashing light strobes emit the lighting effect that makes it look as if the crowd is dancing in slow motion. This adds to the atmosphere of the party and there is rarely a nightclub that does not use it.

However, the chief and most useful purpose of stroboscopes remain in the industries. It makes it much simpler to identify damage in machinery while it moves. This allows for accurate repair. Searching online can yield a good stroboscope supplier in India for in