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Summary of Contents for Megger PD Scan
- Page 1 PD Scan Online Partial Discharge Handheld Scanner USER GUIDE Issue: E (07/2020) - EN Article number: 86391...
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Page 3: Consultation With Megger
E: team.dach@megger.com Megger All rights reserved. No part of this handbook may be copied by photographic or other means unless Megger have before-hand declared their consent in writing. The content of this handbook is subject to change without notice. Megger cannot be made liable for technical or printing errors or shortcomings of this handbook. -
Page 4: Terms Of Warranty
During the period of warranty, Megger agree to repair faulty parts or replace them with new parts or parts as new (with the same usability and life as new parts) according to their choice. -
Page 5: Table Of Contents
Transmitting measurement data to a mobile device ........55 6.1.1 Transferring the data via USB OTG adapter ............ 55 6.1.2 Transferring data via PD Scan WMSD mass storage devices (optional) ..56 6.1.2.1 Connecting ....................... 57 6.1.2.2 Managing measurement data and settings via the user interface ....59... - Page 6 Contents Transferring measured data onto a PC ............63 Preparing a report .................... 64 Using the demonstrator box ................. 68 Maintenance and care ..................71 Troubleshooting ..................... 73...
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Page 7: General Notes
General Notes General Notes This manual contains basic instructions for the commissioning and operation of the Safety precautions device / system. For this reason, it is important to ensure that the manual is always available to the authorised and trained operator. He needs to read the manual thoroughly. - Page 8 It is important to observe the generally applicable electrical regulations of the country in Working with products which the device will be installed and operated, as well as the current national accident from Megger prevention regulations and internal company directives (work, operating and safety regulations).
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Page 9: Technical Description
Megger is offering a lightweight, robust and portable measuring device in the form the PD Scan which allow a range of operating equipment to be examined quickly for partial discharge signals. - Page 10 Technical description The PD Scan is available in five different, application-based sets (set 1 to 4 and an Included in delivery additional set called “DIS”). Depending on the set purchased, the maximum scope of delivery includes the following components: Component...
- Page 11 PD Scan Incl. transport case and batteries 1011423 demonstrator PD Scan-WMSD Wireless mass storage device that can be used for 1012538 rapid data transfer and as a power bank Coupling paste For improved signal coupling when using the...
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Page 12: Technical Data
Technical description Technical data The PD Scan is defined by the following parameters: Parameter Value PD Scan Handheld Display 3.5" touch display, 320 x 240 pixels Battery Li-ion rechargeable battery; 3.6 V, 3.35 Ah Operating time >8 hours Charger input... - Page 13 Technical description Parameter Value HFCT sensors HFCT SC40 HFCT 20 HFCT SC60 (optional) (optional) Split-core Measurement range -10 … 80 dB -10 … 80 dB -10 … 80 dB Bandwidth 100 kHz … 100 kHz … 100 kHz … 20 MHz 150 MHz 20 MHz Resolution...
- Page 14 Technical description The optional PD Scan WMSD mass storage device is defined by the following parameters: Parameter Value Internal memory 8 GB Ports Wi-Fi (2.4 GHz) USB Type A (data transfer) Micro USB (charging) Battery Li-ion battery: 3.6 V, 4.7 Ah...
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Page 15: Connection, Display And Control Elements
Technical description Connection, display and control elements The PD Scan features the following connection, display and control elements: Element Description LED for displaying the charging activity Socket for connecting external sensors On/off switch, back to higher menu level Touch display... -
Page 16: Principles Of Operation
Principles of operation Principles of operation General operation The device can be operated using the touch display or the three soft buttons. Briefly Basic operation tapping the screen or the soft button positioned below the required symbol selects the required function: Exit measuring mode, selection window or menu •... - Page 17 Principles of operation Along with the standard functions which can be accessed using the three buttons at the Special functions lower edge of the display, the following special functions can be activated during the during the actual measurement: measurement Action Function Briefly tapping the The measurement is paused and the current measurement...
- Page 18 Principles of operation This is used, for example, for the definition of folder names in which the measurement Input using the keypad results should be saved. Briefly pressing the button allows the user to scroll through the list of fields on the touch screen.
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Page 19: Using/Attaching The Sensors Provided
The internal airborne acoustic sensor is used for the acoustic detection of partial Internal acoustic discharges. To do this, the front end of the PD Scan must be aligned with the openings sensor in the substation, or directly with the freely accessible test object. - Page 20 Using/attaching the sensors provided Parabolic acoustic DANGER sensor Danger of injuries to the eyes due to laser beam Avoid direct exposure to the eyes! • This external sensor is suitable for acoustic measurements indoors or outdoors on systems on which direct measurements are not possible. The maximum distance possible is largely dependent on the level of the exciter and the ambient conditions (humidity, temperature and reflection points).
- Page 21 Using/attaching the sensors provided The sensor features a laser pointer that is activated by pressing a button, and which can be aligned with the measurement object. This ensures the microphone is optimally aligned. The parabolic umbrella acts as a light filter and ensures that the red laser point is easier to detect.
- Page 22 Using/attaching the sensors provided When using the sensor, you must observe the following: Clean contact surfaces before measuring • Before using the sensor, you must remove any dust particles and irregularities that will prevent the sensor from making full contact with the surface. •...
- Page 23 To do this, the magnetically closing sensor must be installed on the ground wire connected to a cable end. In principle, the PD Scan can also be used in combination with other HFCT couplers, as long as they feature an accessible BNC interface. However, depending on the sensor used, this may result in differences in the level display.
- Page 24 Using/attaching the sensors provided The optionally available LRHR connection cable offers another possibility to carry out LRHR connection cable (optional) PD measurements on encapsulated switchgear without having to disconnect it. The LRHR cable can be connected to all Voltage Detection Systems (VDS) that have interfaces of type LRM or HR.
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Page 25: Performing Measurements
Pressing the on/off switch switches on the PD Scan. The PD Scan is fitted with an internal Li-ion rechargeable battery. This allows the device to be operated for up to 8 hours, depending on the operating mode. Before using the device on-site, the PD Scan should be switched on briefly and the charge status of the battery be checked at the upper right of the display. - Page 26 Performing measurements Measuring temperature NOTE Risk of damage when stored without protective cap Always protect sensor side with the provided protective cap, if not in use. Before starting the measurements, the ambient temperature and humidity should be measured, as both parameters can exert a significant influence on the measurement results.
- Page 27 1. Start the TEV measurement ( –> 2. Press the front ends of the PD Scan and of the function tester together. 3. Press the push-button on the function tester to generate a PD-like signal. 4. Read the measurement result on the display. A level between 18 … 23 dB should be reached.
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Page 28: Preparing A Measurement
If the measurement is to be performed using one of the external sensors included in the Connecting the sensor scope of delivery, this must be connected to the socket of the PD Scan. The device automatically detects the connected sensor after being switched on, and offers a choice between the potential operating modes. -
Page 29: Creating A Measurement Data Folder
The character string is also saved in the sets of measured data, which make allocation and archiving easier. The QR code method also has benefits for the actual measurement. The PD Scan automatically starts by checking, for example, whether older measurements on a... - Page 30 1. Select the menu item New measurement in the main menu. object 2. Select the menu item Read QR code. 3. Hold the PD Scan up to the QR code and press the button. The integrated camera will now try to read the QR code, and will show its character string at the bottom of the display as soon as it was able to be scanned.
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Page 31: 4.2.1.2 Creating A Folder Manually
Performing measurements 4.2.1.2 Creating a folder manually If there is no QR code on the measurement object, then a measurement data folder must be created manually. To do so, proceed as follows: 1. Select the menu item New measurement in the main menu. 2. -
Page 32: Selecting The Operating Mode
Performing measurements 4.2.2 Selecting the operating mode Once the new folder name has been created, the measurements can be started by selecting the required sensor. Pressing the Select measurement sensor field on the touch display or pressing opens the menu for selection of the operating mode. Pressing the required field on the touch display, or navigating to the required field using , followed by , allows the required operating mode to be started. - Page 33 Performing measurements Connected sensor Possible measurement procedures Flexible airborne Acoustic measurement with the acoustic sensor flexible airborne acoustic sensor (AA FR130) or measurement using the internal TEV sensor (TEV or TEV Seq) Parabolic acoustic Acoustic measurement with the sensor parabolic sensor (AA PR400) or measurement using the internal TEV sensor (TEV or TEV Seq) Solid borne vibration...
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Page 34: Measuring The Ambient Noise Level
1. Create a measured data folder with a suitable name (e.g. “GSP”) (see page 29). 2. Place the sensor on external equipment parts. The front end of the PD Scan can be held on a metallic access door, for example, for an ambient noise level measurement. -
Page 35: Standard Measurement
Performing measurements Standard measurement Directly after selecting the operating mode, the measurement screen opens and the Basic procedure device starts to record measured data. Measured data should be recorded for at least 10 seconds while the sensor being used is in contact, or aligned, with the measurement object in the correct way (see section 3). - Page 36 Performing measurements This screen provides a compact overview of the most important measured values and Overview screen the criticality value determined on their basis (see page 43). The coloured smiley symbol is used to make a statement about the condition of the measurement object based on one of the thresholds saved (see page 52).
- Page 37 Performing measurements This histogram shows the measured values from the last 10 seconds in dBµV (averaged Histogram screen per second). The bar at the bottom shows the maximum value measured within the last 10 measurements. The average measurement displayed (Avg) also refers to the last 10 seconds.
- Page 38 Performing measurements In the case of PD activity, cloud-shaped clusters take shape over the course of the measurement, the form and colour of which allow conclusions about the type of PD to be made (e.g. corona discharge or surface discharge). This is described in detail in specialist literature.
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Page 39: Tev Comparative Measurement Between An Internal And External Sensor
Proceed as follows to perform a TEV comparative measurement: Procedure 1. Connect the TEV-C900-PD to the socket 2. Hold the front ends of the PD Scan and the TEV-C900-PD on the two metal surfaces for comparison. 3. Start the TEV LOC operating mode. - Page 40 Performing measurements 4. Use the indicators in the measurement screen to determine which of the two sensors is closer to the source of the partial discharges. The black bar deflects in the direction of the sensor that is closer to the weak point.
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Page 41: Tev Measurement Sequence
Performing measurements TEV measurement sequence This measurement is used for the sequential PD measurement with the internal TEV Purpose sensor at different points on a substation in a specific sequence. This has the advantage of allowing several measuring points on a substation to be measured in one round of measurements, and the results to be allocated to the respective positions correctly during the evaluation. - Page 42 Performing measurements 2. Hold the front end of the PD Scan on the first measurement point and press . The first measurement starts. Once complete, a prompt appears to perform the next measurement. 3. Perform the additional measurements in accordance with the respective measurement point displayed.
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Page 43: Evaluation Of The Measurement Results
Performing measurements Evaluation of the measurement results The following three measured values appear permanently in the upper part of the measurement screens, and can be used for an evaluation of the PD activity: Level (in dB or dBµV) The signal level is measured continuously, and the value displayed is updated every second. - Page 44 Performing measurements The PD level measured and the criticality value that was reached undergo a direct, automatic evaluation during the ongoing measurement, and this is displayed by means of the colour of the text and the type of smiley. The evaluation is made using the thresholds saved, which can be modified at any time for an individual classification system in the device settings (see page 52).
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Page 45: Settings
Settings Settings The settings menu can be accessed from the main menu by using the menu item Along with the menus that are always available for editing device settings, the evaluation criteria and the PRPD diagram settings, the settings for the respective operating modes available (depending on the sensor connected) can also be entered. -
Page 46: Device Settings
Settings Device settings The menu item System can be used to access the device settings, in which the Adapting device following modifications can be made: settings Setting Description General Language Menu language Date Date Time Time Automatic Time until the device automatically switched off in the event of switch off inactivity (1–60 minutes) Schemes... -
Page 47: Importing And Exporting Configuration And Comparison Data
Settings 5.1.1 Importing and exporting configuration and comparison data In addition to the actual measurement data export (see page 55), there are two other file General information formats that can be imported and exported and thereby exchanged between different devices: Configuration file This file contains all the variable setting parameters (such as the evaluation threshold... - Page 48 USB OTG adapter and a suitable Android phone. This means that the devices do not all need to be in the same place. Once the PD Scan is connected to the Android phone, a compatible file management app can be used to access the visible memory and share or send the desired file.
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Page 49: Pairing Bluetooth Headphones
Settings 5.1.2 Pairing Bluetooth headphones Bluetooth headphones must be paired with the PD Scan once before being used for the first time. To do so, proceed as follows: 1. Switch on the headphones and check the charge level. 2. Make sure that so-called pairing mode is activated on the headphones. The headphones provided with the device signalise this with an LED that flashes red and blue in alternation. -
Page 50: Operating Mode Settings
Settings Operating mode settings Depending on the sensor connected, the settings menu provides different submenus for configuring the operating modes currently available. Depending on the menu/operating mode, the following parameters can be specified: Parameter Menu/ Description Operating mode Frequency Frequency at which the acoustic measurement is performed (30 kHz, 40 kHz or 80 kHz) Volume... - Page 51 Settings Along with the option of activating/deactivating the individual measurement screens for specific operating modes, the measurement screen that should be displayed directly after entering the operating mode can also be defined in this menu. To do so, the corresponding entry in the settings menu must be tapped for around 2 seconds.
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Page 52: Adjusting The Evaluation Thresholds
Settings Adjusting the evaluation thresholds The preset evaluation thresholds can be adjusted to the individual, in-house company specifications at any time. To do so, proceed as follows: button in the main menu and open the Evaluation settings menu. 1. Tap the 2. -
Page 53: Prpd Diagram Display Settings
Settings PRPD diagram display settings If necessary, the display settings for the PRPD diagram can be adjusted. To do so, proceed as follows: 1. Tap the button in the main menu and open the PRPD settings menu. 2. Adjust the parameters to your specifications. Parameter Description Threshold... -
Page 54: System Information
Settings System information The system information can be accessed directly from the main screen using the menu item , and provides the following data: Parameter Description Serial number Serial number of the device (please specify in the event of servicing) Software version Software status of the device. -
Page 55: Processing The Measured Data
OTG adapter (not included in scope of delivery). USB OTG adapter The measurement data stored in the internal memory of the PD Scan can then be easily and quickly shared via email, messaging or a cloud-based service using a compatible Android file management app. -
Page 56: Transferring Data Via Pd Scan Wmsd Mass Storage Devices (Optional)
Accessing the measurement data on a connected PD Scan and quickly forwarding it simply requires a wireless connection to the WMSD's Wi-Fi access point. When a PD scan PD Scan is connected to the WMDS, all new measurement data sets are automatically downloaded to the internal memory of the WMSD. This function... -
Page 57: 6.1.2.1 Connecting
If required, the WMSD can be charged using the USB charging cable supplied and the charger supplied with the PD Scan. It takes around four to five hours to charge fully. The lights up red while the device is charging and turns off once the battery is fully charged. - Page 58 PD Scan. To access the data on the PD Scan, switch it on by briefly pressing the on/off button . In contrast to the standard switch-on process, the software remains on the startup screen when the mass storage device is connected. The status LED on the WMSD should light up briefly and then flash blue.
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Page 59: Managing Measurement Data And Settings Via The User Interface
The screen features the following elements: Refresh the page Menu for calling up various data management functions Access measurement data on the connected PD Scan Access measurement data in the WMSD archive Date/time, memory, page currently open, battery status... - Page 60 All measurement data stored in the memory of the connected PD Scan should also be stored in the archive database once the automatic data transfer is complete. However, the measurement data on the connected device can usually be located more quickly in the device's memory as it normally contains fewer data sets and the device does not need to be selected as described above.
- Page 61 Processing the measured data The menu at the top left of the screen provides various functions for sorting/filtering the data sets: Menu item Function Sort measurement data sets chronologically. Calling the menu item up again sorts the sets in reverse order. Sort measurement data sets alphabetically.
- Page 62 Processing the measured data To remove data sets you no longer need from the memory of the PD Scan or the Deleting the selected measurement data WMSD, the selected sets can also be deleted by selecting the menu item from the menu at the top left of the screen.
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Page 63: Transferring Measured Data Onto A Pc
PC when it is switched on using the USB port. The PD Scan should then be identified as a data medium, and be integrated as a drive. The measured data folder with the measured data (*.data and *.xml) and the photos... -
Page 64: Preparing A Report
MeggerBook Reporting Edition software supplied on the enclosed USB stick. The latest version of the software can be downloaded at any time from the PD Scan website (section "Software and firmware"). To create a report, proceed as follows: 1. - Page 65 This can either be any measured data archive folder on the hard disk, or the internal memory of the PD Scan connected by USB cable. If you import the measured data directly from the PD Scan, then you must open the App directory...
- Page 66 Processing the measured data The measured data are shown. 7. Click on the Next step button and then on Select measurement data. 8. Select the directory with the measured data recorded on the measurement object. The measured data are shown. Information about the measurement object are entered in the input fields on the left side of the screen.
- Page 67 Processing the measured data 9. Click on the Next step button. The preview of the report is displayed. Should there be any other measured data folders for the same measurement object, which are relevant for the report, then they can be added to the report using the button.
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Page 68: Using The Demonstrator Box
Using the demonstrator box Using the demonstrator box The optional demonstrator box can be used to test and demonstrate all functionalities of Introduction the device. Because the pulse level and frequency can be adjusted, a wide range of measurement scenarios can be simulated, which is why the demonstrator box is outstandingly suited for in-house product training sessions. - Page 69 The levels are coordinated for the acoustic measurement so that the expected values are measured at a distance of around 50 cm with the PD Scan and the flexible sensor, while the distance should total approx. 5 m when the more sensitive parabolic acoustic sensor is used.
- Page 70 TEV 1 in TEV mode in order to be able to measure the pulses generated. When performing the “time of flight” comparative measurement, the front end of the PD Scan must be held against the TEV 1 contact surface and the external TEV sensor against the TEV 2 contact surface.
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Page 71: Maintenance And Care
Maintenance and care Maintenance and care In order to charge the PD Scan, connect the device to the mains power. Always use the Charging the battery charger provided, which must be connected to the device using the USB cable with the USB interface provided. - Page 72 Maintenance and care In order to update the firmware for the PD Scan, you will require the PDSCANUBL Updating the firmware software, which can be found on the USB flash drive provided. The latest version of the firmware can be downloaded at any time from the PD Scan website (section "Software and firmware").
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Page 73: Troubleshooting
Troubleshooting Troubleshooting If problems occur, these can, under certain circumstances, be diagnosed and solved Independent fault using the following table: clearance Problem / error message Possible cause / remedy The software crashes and the Perform a hard reset by pressing the left and right software no longer reacts to user button at the same time for a few seconds. - Page 74 Tento symbol indikuje, že výrobek nesoucí takovéto označení nelze likvidovat společně s běžným domovním odpadem. Jelikož se jedná o produkt obchodovaný mezi podnikatelskými subjekty (B2B), nelze jej likvidovat ani ve veřejných sběrných dvorech. Pokud se potřebujete tohoto výrobku zbavit, obraťte se na organizaci specializující se na likvidaci starých elektrických spotřebičů...
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