Call 01642 931329
Members Save £££s

Transformer, Motor & Generator Testing

  • Range of devices suitable for both detecting phase and evaluating levels of phase rotation. Includes Socket and See Phase Finders, non-contact phase detectors, phase rotation testers from DiLog and products from many other manufacturers.
    View All
  • Range of digital and handheld non-contact and contact tachometers designed for accurately tracking the RPM of machinery such as turbines and all other types of rotating machinery to a high degree of accuracy.
    View All
  • Evaluate the viscosity and composition of oil with our range of oil test sets and oil testing kits. Evaluate water in oil, transformer oil efficiency and test cooking oil to ensure it is safe for cooking purposes under health and safety regulations.
    View All
  • Ensure excessive vibration isn't taking place within essential machinery and stop problems before they start with our range of vibration testers and vibration monitoring/testing instruments from Fluke and others.
    View All

Transformers, motors and generators are all essential equipment that is often integral for the operation of a system. When these devices are not running at full efficiency, or are damaged by things such as excessive vibration, contaminants and various other factors, this can lead to an overall loss of efficiency and can result in potential financial loss.

The testing devices included within this category are designed to give users all the tools they need to ensure that motors, generators and transformers can be kept running at optimal levels of efficiency and any problems can be rectified long before they become a more significant problem. Regular testing procedures are highly recommended on these devices to make sure that any sudden problems are addressed (after all, problems can occur at any time).

Phase rotation testers are commonly associated with the testing of motors as they evaluate exactly how three-phase systems are rotating in relation to each other. When incorrect phase rotation is taking place this could cause the system to run incorrectly and would be flagged up when testing using a phase rotation tester.

Tachometers are used for measuring RPM (revolutions per minute) on machinery with rotating parts. When a device rotates at a level not specified due to an error, this could lead to a build-up of friction levels, weakening of parts and eventually could cause the system to break entirely. A tachometer evaluates that the correct level of RPM based on the system's correct working parameters is present and can be used to spot excessive RPM levels. These testers can either be non-contact and use laser beams for measurement purposes or alternatively can be full contact devices which constantly log RPM over a time period.

High power electrical transformers rely on the insulative properties of oil to correctly operate. The problem with using oil in this way is that the oil is constantly subjected to electrical current, leading to gradual breakdown of the oil's overall efficiency. Excessive electrical output also causes the oil to react with metallic components and other contaminants that might be in the air/from other applications, leading to oil being filled with components that simply shouldn't be there and cause the oil to work incorrectly.

Transformer oil testers are designed to test insulative oils (including mineral, silicone and ester oils) to evaluate the dielectric strength (IE the voltage resistance) of the oil. To perform this test a sample of the oil is taken, placed inside a vessel and inserted into a transformer oil tester. The sample will then be safely subjected to high levels of voltage until oil breakdown occurs; by taking this reading, the user is then able to determine how much electrical power oil can withstand and change oil over if the dielectric strength is too low.

Turns ratio testers work with transformers to ensure that the turning of the transformer produces the optimal levels of power and is working within correct thresholds. Regular testing with these devices should be performed to ensure correct transformer operation.

Vibration testers vary from handheld units to complex instruments that can measure multiple vibration channels simultaneously. One of the biggest downsides of industrial-grade machinery (and perhaps lesser devices) is that they often vibrate due to their operation levels. This vibration can then in turn lead to the loosening of components, cause internal damage to the system and can gradually build up further as the age of the system increases. Unchecked vibration is also highly dangerous to those working around the system.

A vibration meter is used to accurately determine the level of vibration on the system and can be used to log levels over a time period or alternatively measure single values.