Measurement technology Archive - Page 2 of 8 - WGM

Distribution transformers | ÖPEV-k | Transformer oil drain tap

Distribution transformers | Transformer oil drain tap

Oil filled distribution transformers are a very important part of the power supply, regardless of their size. By performing targeted inspections, maintenance, and servicing, it is possible to extend their service life. However, to properly analyze the contained insulating oil and draw a possible diagnosis, it is necessary to extract the oil correctly. If the insulating oil the transformer contains is faulty, this can in fact lead to serious consequences.

ÖPEV-k oil drain device for transformers

This therefore means that accurate results of insulating oil analysis are critical to the condition of the transformer. The results of an oil sampling additionally determine the further course of action with the oil transformer. In general, the ÖPEV-k is ideally suited for oil sampling, namely on an oil local network transformer. Or on distribution transformers that have a difficult or poorly accessible oil drain valve. On some transformers it is very complicated to take an oil sample. For example, on concrete or complete stations.

But ÖPEV-k guarantees absolute ease of use for safe oil sampling at the transformer. Adapters for the nominal width 22 NW and 31 NW are available as accessories. Consisting of stainless steel, the ÖPEV-k and the adapters thus come in a robust and compact design. The oil drain device ÖVEP-k is screwed onto the drain tap of the transformer with the adapter (for example NW 22). The shaft is then used to open the drain valve of the transformer and the ÖVEP-k fills with oil.

In total, there is an oil sampling tap and a vent valve on the ÖVEP-k. Consequently you can connect a hose to the oil transformer drain tap of the OVEP-k to remove the oil sample without contamination. WGM Support also offers a remote sampling kit to control the oil sample. In summary, the ÖPEV-k is the ideal and indispensable tool for effortless oil draining from oil distribution transformers.

We offer advice on the topics of: ÖPEV-k | DÖPEV | Oil sampling | Insulating oil analysis

Micro Ohm Meter | DLRO2 | Ohmmeter

The Micro Ohm Meter DLRO2 is a rugged, portable 2 A micro ohm meter. It delivers fast, accurate and repeatable measurements – even in locations full of electrical noise. The DLRO2 joins a host of products that proudly carry the Ducter™ brand as the latest addition. Ducter™ testers are as well known and proven as Megger insulation resistance testers. Users in the power supply sector or industry get a high level of safety thanks to CAT III-600 V/CAT IV-300 V in accordance with IEC61010. In addition, the device is equipped with self-protection in case of accidental connection up to 600 V without tripping a fuse.

This saves valuable time that would otherwise be spent repairing or obtaining a replacement fuse. When working outdoors, IP54 protection ensures that neither rain nor dust will prevent testing. The DLRO2 is at home in a wide variety of applications, measuring low-resistance values on railroads and aircraft as well as industrial components. Thanks to dedicated long test leads to optimize output, even applications where long test leads are required are no problem for the DLRO2. The long test lead feature delivers up to 1 A of test current into 4 ohms of resistance.

This makes the DLRO2, with its optional test leads on cable reels, the ideal instrument for testing wind turbines and aircraft lightning protection applications. For testing smaller inductive loads, the DLRO2 can apply 2 A for at least 15 seconds, made possible by the integrated high-capacity batteries and a separate inductive load function. The batteries can be fully charged within 2.5 hours, minimizing downtime. Note: The DLRO2 is not intrinsically safe/ ATEX certified and must not be used in explosive environments.

We are happy to advise you on the topic: Microohm Test Equipment | Low Ohm Measurement | Micro Ohm Meter

Forklift Battery | BLE 600 | Batteries

BLE 600: A Versatile Battery Management Device

The BLE 600 is a compact 3-in-1 device designed for charging, discharging, and activating lead acid or nickel-cadmium (NC) batteries. It is ideal for forklift batteries and battery charging systems used in uninterruptible power supplies (UPS), emergency lighting systems, and central battery systems. Thanks to its small size, the BLE 600 is a portable and convenient tool for regular maintenance of single cells, especially older ones, with voltages of 1.2V, 2V, 4V, 6V, 8V, and 12V.

Flexible Functionality for Battery Maintenance

The BLE 600 can perform its three functions—charging, discharging, and activating—either separately or simultaneously. This flexibility enables users to effectively maintain forklift batteries while streamlining overall service. When used together, the charging and discharging functions can charge and discharge the batteries in one or multiple circuits using a low constant current. The device can even perform these operations multiple times individually.

Regeneration and Monitoring Capabilities

The activation function repairs damaged material on the battery electrode plate, correcting any malfunctions and thereby regenerating the battery. This process increases the capacity of the forklift battery. Additionally, as a battery load simulator, the BLE 600 checks the battery’s discharge status and can conduct capacity tests to accurately determine the actual capacity of the battery systems.

By regenerating forklift batteries, the BLE 600 enhances their efficiency and optimizes resource usage. It also allows for long-term monitoring of battery conditions, continuously checking the traction battery to prevent serious damage over time. The device features a user-friendly interface with both touchscreen and keyboard controls. Furthermore, it includes a direct USB drive for easy data transfer to a PC. Software updates can be completed quickly, and users can download reports in Excel format at any time.

We offer you advice on the following topics: Stationary batteries | Battery | Battery charging / discharging.

Battery Impedance Tester | Battery Test | BITE 3

The Megger BITE 3 battery impedance tester measures key parameters for assessing the condition of lead-acid batteries with a capacity of up to 2,000 amp-hours. The measured values include cell impedance, cell voltage, and cell junction resistance. Additionally, the BITE 3 performs an internal ohmic test.

For the first time in a device of this kind, the BITE 3 also measures trickle charge current and superimposed AC current. An integrated spectrum analyzer displays the harmonic content of the AC current. The device’s firmware is internet-capable and can be updated; it also supports multiple languages.

The BITE 3 is particularly user-friendly, making it ideal for the regular inspection of lead-acid batteries. It measures internal impedance, junction resistance, cell voltage, as well as trickle charge current and ripple current. These values, together with temperature, specific gravity, and other battery parameters, enable a comprehensive assessment of battery condition—from terminal to terminal—and, to some extent, of the charger (specifically, the superimposed AC current and its harmonic components).

Megger recommends incorporating the BITE 3 as part of a comprehensive battery maintenance program:

For lead-acid batteries, a semi-annual inspection is advisable,
For VRLA batteries, a quarterly check is recommended.

Overall, the BITE 3 is among the easiest and most reliable devices for monitoring batteries and chargers.

We will be happy to advise you on the subject: Battery measurement | Battery testing | Battery capacity test.

Cable location | vLoc3 | Cable measurement

vLoc3 line locator series consists of 7 different features and functions: vLoc3-Pro, vLoc3-5000, vLoc3-Cam, vLoc3-9800, vLoc3-ML, vLoc3-RTX-Pro and vLoc3-DM. The vLoc3 series line locator receivers are, in short, the perfect measurement devices for locating underground networks.

vLoc3-Pro is a locating system for locating underground lines and cables. It enables 3-dimensional line location. And is mainly used in the field of cable measurement technology. It also provides all the necessary information for accurate cable testing and cable fault location. Two sets of 3D antennas detect interference fields. The degree of interference is shown on the display in three different colors. In addition to the familiar classic locating mode, the cable fault locator also has other innovative features. Thanks to the vector screen, the user no longer even has to walk over the cable to check it. This leads to more safety, for example in road traffic.

Moreover, the device contains eight passive locating modes and a sheath fault location function. As well as an SD mode and a frequency range of 98Hz – 200KHz. If the receiver swings too fast, the device alerts the user. Thereby it avoids mislocations. The measuring device also indicates cables laid too flat, field disturbances or interference fields caused by above-ground routes.

vLoc3-5000: The vLoc3-5000 receiver combines Signal Select™ (SiS), Signal Direction (SD), Bluetooth, real-time colour coding and an internal precision GPS module.
vLoc3-Cam: The vLoc3-Cam is the easiest tool when it comes to finding probes (pig transmitters) and camera heads.
vLoc3-9800: The vLoc3-9800 locator is a simple tool for locating underground utilities to prevent damage while gathering information for analysis.
vLoc3-ML is the advanced version of the vLoc3-Pro cable locator. It is the 2-in-1 device for marker and line location and enables precise location of disc and ball markers.

We are happy to advise you on the topics: Cable location | Cable measurement technology | Cable fault location.

VLF Measuring M-VLF60 | Cable Diagnostics

VLF Meter M-VLF60 | Cable Testing | VLF Testers – Testing medium voltage cables with the M-VLF60 is easier today than it was many years ago. A VLF test finds faults in your cable system at much lower voltage than a conventional DC test. Thus, no traveling cells are generated. The M-VLF60 is a compact and, thanks to its robust design, extremely field-proof test system for medium voltage cables. No external PC is required on site. Fast commissioning and the possibility of true continuous operation qualify the unit as an ideal tool for routine cable testing.

With the portable VLF meter M-VLF60 you can test the following cables XLPE, PE & EPR. The VLF tester series finally allows utilities and industry an economical alternative to DC testing. To protect the operator and the equipment, the device has two independent discharging devices and an integrated 12kV reverse voltage protection (50 Hz). Thus, the software allows easy report generation. Also, the fast programming of test sequences. VLF stands for Very Low Frequency, 0.1 Hz and below.

Thus, it is an alternating voltage at low frequency. A VLF test system is simple to operate and the test is easy to perform. Conventional AC voltage test equipment has been used for decades for many types of installations. The test voltage is applied for the desired duration. This is because the DUT holds the voltage and either passes or fails. It is a pass/fail test. Why VLF testing? Because DC tests damage the insulation of the cable. That way, VLF testing shows the damage of the insulation without harming the cable.

We offer you advice on the topics of: VLF meter devices | cable diagnosis | VLF diagnosis.