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Partial Discharge Doble’s EMI Surveyor, Kaaraba tells more

Why the Partial Discharge Doble’s EMI Surveyor ? Doble’s EMI Surveyor is a diagnostics tool that is used in the detection of electrical defects in high voltage equipments. It works by measuring the electromagnetic energy (EMI) being released by partial discharge defects of high voltage equipments. Also, the electromagnetic energy could be due to arcing defects related to low or high voltage mechanical conductors. Using the EMI Surveyor, being a handheld device, allows assessments to be done with the HV equipment is in operation. This is advantageous because it allows for detection of areas that aren’t working properly for an in-depth offline inspection. That is, EMI measurements are made during the asset’s operation and when the asset is not working, the inspection is done. For full analysis and diagnostic capabilities using the EMI Surveyor, additional kits are included for a comprehensive and detailed assessment. The additional kits are PDS200 spectrum analyser EMI sniffe...

DOBLE M5400 Sweep Frequency Response Analysis

Discover the Doble M5400, Sweep Frequency Response Analysis DOBLE’s M5400, a Sweep Frequency Response Analysis test set, has a practical use in the inspection of equipments which possess windings. Popular/common examples of these types of equipments are power transformers and reactors. The M5400 is used on the equipments to ascertain their mechanical integrity because the winding movements can be known by measuring the frequency at which a winding responds. The working of the M5400 is unique in its operation as it operates on an input-output signal measurement. Firstly, it sends input parameters to the transformer as excitation signals and measures the output parameter as returning signals. These response measurements are then compared with baseline readings as well as results obtained from similar transformer equipments. Thus, this allows for easy identification and detection of deviations from the baseline readings and recorded as mechanical problems. This manner of approach t...

Protective Earth Resistance Meter DV RMO60E

Discover the DV POWER RMO60E The DV Power RMO60E is the equipment of choice when it comes to testing an equipment’s protective bonding. This is in line with the 61010-1 IEC 2001 standard which has been put in place with regards to protective earth resistance measurements. This standard specifies the requirements expected of plug connected equipments and also for permanently connected equipments. According to the 61010-1 IEC 2001 standard, it is expected that: The protective earth resistance rating or value should not be more than 0.1 Ω. Also, the voltage rating or value should not be in excess of 10V and above. This voltage 10V cap applies to the potential difference between the terminal of the protective conductor end and the conductive accessible parts requiring a protective bonding. A current is applied for 1 minute across both ends, that is, the terminal of the protective conductor end and the conductive accessible parts requiring a protective bonding. After which the voltage...

Doble Engineering LCM 500 a safe measuring device

Why the Doble LCM 500 is a safe measuring Device for Surge Arrestor ? The LCM 500 by Doble is an equipment used to perform checks on the surge arrester component of a power transformer. The surge arrester’s purpose in a transformer is to protect it from possible damages due to lightning or power surge. When lightning occurs, a high voltage is introduced into the transformer’s electrical system which is above its specified operational voltage. This high voltage can cause damages to an electrical system that is not fitted with a surge arrester. This is because the surge arrester, instead of absorbing the high voltage passing through it, sends it to the ground. This is made possible by the Metal Oxide Varistor (MOV) found in the surge arrester. The MOV works as a semiconductor which is very sensitive to the voltage going across. At normal voltages, current do not pass through it but at high voltages, it allows current pass through it. For its test, the LCM 500 works by measuring the ...

Omicron Company 100 Relay Testing Equipment

The Omicron Company 100. Primary Test. Secondary Injection. Relay Test Equipment. Omicron’s COMPANO 100 is a multi-purpose tool that can be used for performing various types of basic testing on electrical systems. It is very user-friendly such that it incorporates flexible configurable inputs to give exact values desired by the user. Also, it allows for variable frequencies in terms of output signals, pure DC and automated ramps. For processes such as relay testing, it offers binary inputs as well as DC or AC current and voltage inputs. An advantage of the COMPANO 100 is its portability as it comes in at only 22lbs (approx. 10kg). As a result, it can be moved easily and used for performing troubleshooting and maintenance procedures in substations and plants. The COMPANO 100 finds application in Single-phase protection relay testing Micro-ohm resistance testing CT/VT ratio checks Polarity and wiring checks Benefits derived from the use of the COMPANO 100 are not limited...

Power Transformer Testing Omicron Testrano 600

Omicron Testrano 600, a portable Three Phase Power Transformer Test Kit The TESTRANO 600 is famously known as the first of its kind, a portable three-phase power transformer test set. It has the capability to support all known and common tests that can be performed on a power transformer. The TESTRANO 600 offers cutting edge technology that sets it above other power transformer testing equipments. Having a 10.6” TouchControl display makes using a laptop PC onsite not necessary but if desired, connection is allowed. To use the TESTRANO 600, only three cables. These cables have multi-purpose functions and are connected to the transformer’s low and high voltage sides. This way, all tests can be carried out without having to make changes or new connections again. Benefits of the TESTRANO 600 True 3-phase power transformer test set Fast and reliable de-magnetisation of transformer’s core Powerful device with 3 x 33A DC or 400V AC Three times faster testing Reduced wiring effort...

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