Measurement technology Archive - Page 5 of 8 - WGM

Transformer Insulation Oil Analysis | Oil Sample Analysis

Transformer station | Transformer Insulation Oil Analysis

Insulating Oil Analysis | The most important criterion of an oil-filled transformer is an intact insulation oil, thus ensuring safe operation of the transformer. Why should one carry out the oil examination of a transformer? The aging process of the insulating oil is progressing due to strong stress and thermal influences. It is recommended to take an oil sample in case of the following events: Before commissioning a new oil transformer. For regular checks during operation. In all cases where there is a suspicion of damage to the oil transformer.

In case of malfunction or when the protective devices are triggered. When taking an oil sample, some factors must be taken into account. For a transformer insulating oil inspection, it is assumed that the oil samples are filled in suitable containers. An oil sample from electrical equipment tells a lot. The oil sample serves to document trends and tests. Impurities in the oil such as particles, acid number and viscosity etc. provide information about the condition of the oil. The aim is to determine changes due to aging and to detect functional defects at an early stage. If samples are taken improperly, the resulting measurement and analysis results are invalid. Insulating Oil Analysis.

Before taking the oil sample, it must be determined according to which standard the oil sample analysis is to be performed. The quantity and also the sampling point of the oil to be extracted depends on this standard. Periodic and chemical tests as well as chromatographic analyses (Gas-in-Oil and HPLC) of insulating oil are indispensable. In order to apply the entire spectrum of oil analysis in a targeted manner, WGM Support works closely with independent laboratories.

We offer you advice on the topics of: Oil sampling | Oil analyses | Oil evaluation

DC Load Bank | Battery Test | Battery Capacity

DC Load bank Solutions – We offer DC loadbanks for various industries, along with custom models designed for high performance. Our loadbanks simplify DC load testing and battery capacity measurement, making these processes quick and reliable. With a wide range of models, we cover voltages from 12V to 480V and handle currents up to 600A. As a result, our loadbanks are widely used in fields like telecommunications, power supply, data centers, and forklift operations. They are also critical for uninterruptible power supplies (UPS), central battery systems (CBS), and emergency power systems (EPS).

Our DC loadbanks are known for their unique design and high reliability. They support precise testing of DC loads, battery capacity checks, and detailed diagnostics. With optional software, each cell’s discharge values can be monitored in real-time on both the load bank display and a connected PC. Regular battery capacity checks are essential for reliable maintenance. Our loadbanks are trusted energy sources for power systems and other essential operations, including emergency lighting.

Load testing is essential to confirm that stationary batteries meet required standards. These tests provide clear insights into a battery’s condition, aiding accurate diagnostics. Key indicators, like battery capacity, state of charge, and discharge rate, reveal crucial details about battery health. In critical environments like data centers, airports, or hospitals, a discharged or failed battery could have severe consequences. To prevent such risks, WGM Support offers a range of custom battery loadbanks, specifically for constant current discharge tests and battery capacity evaluations.

Expert Support – Our team is available to advise on battery testing, measurement, and capacity checks. We ensure you have the right tools and information to keep your systems running reliably.

We are happy to advise you on topics like: Loadbank | Battery measurement | Battery capacity testing

VLF Meter M-VLF28 | Cable Test

VLF Meter M-VLF28 is suitable for cable testing and cable diagnosis. If a fault in the cable networks of the medium and low voltage range causes a malfunction, quick localization is important. Eliminating the supply interruptions is immensely important. Because it saves time, money and trouble. Besides that, the advantages of VLF testing have been confirmed by scientific studies and practical field tests. Also, the VLF test is recommended by the DIN VDE standards and the standardization of the IEEE 400.

Testing medium voltage cables or rotating machines and transformers has never been easier. If a fault occurs, high-tech equipment should be available to perform the necessary measurements. In fact, prerequisite for this is state-of-the-art technical measuring equipment. The VLF measuring device M-VLF28 has manual and automatic test settings. Additionally, the diagnostic sequences offer different operating modes: such as the VLF cable test with symmetric AC voltage. But this is load independent over the whole range. Furthermore, a second option is the test with DC with positive and negative polarity or burning in case of high-impedance faults. Overall, cable sheath test as well as the sheath fault location are possible.

On top, for the discharge of test specimens, a discharge device is available. This device enables both electronic and mechanical discharge of the test specimen. Moreover, the VLF test device can be extended with an internal Tangens Delta diagnostic unit at any time. With a weight of only 14kg the high voltage generator is the smallest device on the market and is perfectly suited for mobile use. At that, a waterproof, shockproof and dustproof IP67 housing protects the M-VLF28. All in all, these features make the VLF Meter M-VLF28 an outstanding cable testing and cable diagnostic device.

We are offer you advice on the topics of:
VLF Measuring Instruments | Cable Diagnosis | VLF Diagnosis.

Ground measuring device DET4TCR | Ground resistance

In the field of electrical engineering, an earth fault is a fault with a high risk potential. An earth fault is a fault situation in which one phase conductor is in contact with the earth. Consequently, a power supply system where the neutral point is grounded is called an earth fault. In the case of an earth fault, electrical current flows to earth, resulting in an earth short circuit.

The grounding test family DET4 from Megger offers comprehensive solutions for your grounding measurement requirements. Therefore, you have everything you need for your measurements. The standard equipment consists of the tester, test cables, electrodes, connection adapter set and batteries. The earth measurement kit is supplied in a carrying case. The DET4TC and DET4TCR ground testers are designed for use over a temperature range and have an IP54-rated housing. This allows the test instruments to be used outdoors without compromise. The Ground measuring DET4TCR has all the functions for earth testing. As a result, the tester offers variable frequencies from two to four conductor measurements and more.

The instrument has no hidden functions. Therefore, switching the backlight on and off is very easy. That way it is possible to operate both functions with the gloves. Consequently, it uses unique auxiliary controls to select the test frequency or the output voltage. Fifty or twenty-five volts, depending on local standards. Therefore, the design does not require a short circuit connection when performing two pole measurements – unlike other instruments. The Ground measuring DET4TCR is powered by standard AA batteries. This allows for an excellent operating time during the measurement.

We offer you advice on the topics of: Grounding measurement | Grounding test | Grounding

Ground measuring device DET24C | Ground clamp

In the field of electrical engineering, an earth fault is a fault with a high risk potential. An earth fault is a fault situation in which one phase conductor is in contact with the earth. Consequently, a power supply system in which the neutral point is grounded is called an earth fault. In the case of an earth fault, electrical current flows to earth, resulting in an earth short circuit.

The Ground measuring DET24C earth leakage tester is a digital earth tester and offers a possibility for accurate RMS current measurement. The DET14C and DET24C ground testers allow you to measure without seperating the earth electrode, increasing measurement integrity and reliability over products with interlocking teeth. Other improvements over current generation products include improved accuracy and up to three hundred percent longer battery life. In electrically noisy environments, the built-in filter function provides increased immunity to interference. The unit’s ability to measure the current flow in an underground cable is a useful safety feature, especially when the ground cable needs to be disconnected.

The Ground measuring DET24C and DET14C ground testers represent a new generation of clip-on ground testers. These devices induce a test current into grounded systems and measure the ground resistance in multi ground installations without disconnecting the ground connection. They offer access, advanced features, ease of use and CAT IV 600V safety protection. They feature flat jaws and prevent dirt build-up, increasing measurement integrity and reliability over products with interlocking teeth. Other improvements over current generation products include improved accuracy and up to 300 percent longer battery life. In electrically noisy environments, the built-in filter function provides increased immunity to interference.

We offer you advice on the following topics: Grounding measurement | Grounding measurement devices | Grounding

Data logger analysis | Data logger MSV165

Data logger analyzer | Data logger MSV165

A typical application for the MSV165 Data logger analyzer is transport monitoring. The data logger with acceleration sensor is characterized for long-term measurements of shock, vibration, concussions and impacts. The MSV165 analyzer can be used for up to five years at 1600 measurements per second. Perform acceleration, shock and vibration measurements in all three axes. Shock monitoring is ± 15 g to ± 200 g. Before the result is known, the MSV165 data logger records 32 measurements. By means of a microSD card you can increase the capacity to over one billion measured values.

You have the choice between internal and external sensors. The external sensors are available in different cable lengths. For the configuration of the data a software is available. The MSV165 has an extremely low power consumption. With the LiPo battery (900 mAh) you can master up to six months of shock monitoring. For an even longer recording time of up to five years, the MSV165 can be equipped with long-life batteries.

Following the enhancement of the MSR165 in recent years, primarily with respect to its memory capacity (2 million measured values by default, 1 billion measured values with a microSD card) as well as the software for capturing and evaluating the recorded values, this data logger is now being optimised with respect to its working range and power supply. Whilst it was previously possible to monitor shocks up to ±15 g, the user now has a working range of up to ±200 g. This extended working range is beneficial when it comes to recording applications where very large forces occur suddenly, for instance in the field of transportation monitoring of delicate goods, aerospace, as well as drop and impact tests in the industry.