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Megger PD Scan, User Manual

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Megger PD Scan User Manual Download Page 49

Settings 

 

 

49 

5.3

 

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: 

1.  Tap the 

 button in the main menu and open the 

Evaluation

 settings menu. 

2.  Select the operating mode for which you wish to adjust the evaluation 

thresholds. 

 

3.  Select the threshold you want to adjust. 

Threshold  Description 

ORANGE

 

dB value above which the measured level is displayed in an 

orange text colour. 

RED

 

dB value above which the measured level is displayed in a red 

text colour. 

 

Criticality value above which a neutral smiley appears. 

 

Criticality value above which a sad smiley appears. 

 

4.  Tap on 

 and enter the passcode 

1234509876

 required to adjust the 

threshold. 

5.  Adjust the threshold and save the new setting. 

Summary of Contents for PD Scan

Page 1: ...1 PD Scan Online Partial Discharge Handheld Scanner USER GUIDE Issue B 07 2019 EN Article number 86391...

Page 2: ...2...

Page 3: ...d Kent CT17 9EN T 44 1304 502100 F 44 1304 207342 E uksales megger com Dr Herbert Iann Str 6 D 96148 Baunach T 49 9544 68 0 F 49 9544 22 73 E team dach megger com Hagenuk KMT Kabelmesstechnik GmbH Meg...

Page 4: ...are hereby limited to a period of 12 months from the date of delivery Each component supplied by Megger within the context of warranty will also be covered by this warranty for the remaining period o...

Page 5: ...2 2 Selecting the operating mode 29 4 3 Measuring the ambient noise level 31 4 4 Standard measurement 32 4 5 TEV comparative measurement between an internal and external sensor 36 4 6 TEV measurement...

Page 6: ...Contents 6 8 Maintenance and care 60 9 Troubleshooting 62...

Page 7: ...ON Indicates a potential danger that may lead to moderate or minor injuries if it is not avoided NOTE Indicates a potential danger that may lead to material damage if it is not avoided Serves to highl...

Page 8: ...ificial Optical Radiation Directive 2006 25 EC The transportation of lithium batteries as well as devices in which such batteries or rechargeable batteries are installed is governed by regulations tha...

Page 9: ...sensors TEV airborne acoustic for this purpose and can also be operated with a range of external sensors TEV HFCT airborne acoustic acoustic contact probe The device can be operated by using three so...

Page 10: ...software 2010642 Charger 90025102 USB connection cable type C 90027768 Headphones adapter cable 90026232 90026230 Bluetooth headphones 90019021 Function tester FC 1 1010219 Temperature and humidity s...

Page 11: ...ade kit set 1 to set 4 Includes a parabolic acoustic sensor flexible acoustic sensor acoustic contact probe HFCT sensor Bluetooth headphones and larger transport case 1011550 Upgrade kit set 2 to set...

Page 12: ...urements IP protection class in accordance with IEC 60529 DIN VDE 0470 1 IP54 Operating temperature 10 to 55 C 30 C 93 r h Storage temperature 20 to 70 C 40 C 95 r h Dimensions W x H x D 220 mm x 80 m...

Page 13: ...strator box is defined by the following parameters Parameter Value Interne Batterien 4 x AA battery Operating time 50 hours if standard AA batteries with 2000 mAh are used Level of transmitted pulses...

Page 14: ...ntrol elements Element Description LED for displaying the charging activity Socket for connecting external sensors On off switch back to higher menu level Touch display TEV sensor contact area Camera...

Page 15: ...u Select confirm function setting call up selected menu item Save the measured values Scroll through menu access required function Continue to the next measurement screen Switch over to editing mode t...

Page 16: ...d to the return to the measurement screen Pressing and holding the screen selection button The current measurement screen is saved as a screenshot A keypad for entering the file name appears Pressing...

Page 17: ...the last character that was entered Pressing and holding the button deletes all characters You can switch to the numeric keypad by pressing In addition to number keys the keypad also has six freely as...

Page 18: ...ject should always be roughly the same when possible to ensure the measured values recorded are comparable The internal TEV sensor measures electromagnetic waves To do this the front end of the PD Sca...

Page 19: ...e retaining the same level in comparison to an internal acoustic receiver If the internal acoustic receiver allowed a reading of for example 20 dB V to be taken at a distance of 1 m to the measurement...

Page 20: ...nsor is attached to the measuring point This measurement is ideally suited for substations with a single enclosure and on which airborne acoustic measurements cannot be conducted The connection betwee...

Page 21: ...connection 3 Check for presence of voltage 4 Make earth connection and short circuit 5 Cover or block access to adjacent components which are live The HFCT sensor is suitable for inductive decoupling...

Page 22: ...operator before beginning work Antennas which are connected to the detector for measuring purposes are conductive components Their length is therefore especially to be taken into account when approach...

Page 23: ...r must be connected to the socket provided for this purpose and the protective cap needs to be removed from the sensor side The values appear on the display and can be saved using The symbol appears i...

Page 24: ...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 This provides proof of proper funct...

Page 25: ...ther be connected using the USB port or be paired by means of Bluetooth see chapter 6 The headphones are used to reproduce the level measured acoustically The acoustic signal processing is only availa...

Page 26: ...e PD Scan features an integrated QR code scanner When scanning a QR code affixed to a measurement object the character string encoded in it is decrypted and a folder name comprised of this character s...

Page 27: ...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 scann...

Page 28: ...is created the name of which is comprised of the current data and a running index 3 If you would like to modify the name of the folder select the Rename folder button In most cases including the numbe...

Page 29: ...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 Depending o...

Page 30: ...or Acoustic measurement with the parabolic sensor AA PR400 or measurement using the internal TEV sensor TEV or TEV Seq Solid borne vibration contact sensor Measurement with the acoustic contact probe...

Page 31: ...parts The front end of the PD Scan can be held on a metallic access door for example for an ambient noise level measurement When using an HFCT sensor attaching it to the earth line of a low voltage l...

Page 32: ...is also possible without problems In this case the data are filed in the same measured data folder as an additional data set The button can be used to switch between the different measurement screens...

Page 33: ...age measurement shown is calculated from the level values measured for the last 10 seconds This screen is only shown when the QR code of the operating equipment was scanned and there is a previous mea...

Page 34: ...age periods occurring within one second The bar at the bottom also specifies the maximum value measured in this case The PRPD diagram phase resolved partial discharge provides information about the di...

Page 35: ...ur is not modified any further This allows the assumption to be made that an infinitely long measurement would result in all dots at least those inside the cloud being shown in red The screen can be d...

Page 36: ...is recommended e g on two adjacent switchgears Although the PD level is also measured and output on both sensors during a comparative measurement like this this only plays a minor role in localising...

Page 37: ...herwise no direction cannot be indicated The internal and external buttons can be used to switch over between the current measured value display of the two sensors during the measurement 5 If applicab...

Page 38: ...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 The number and order of...

Page 39: ...rst 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 The button can...

Page 40: ...means of an algorithm and the remaining number is used for the calculation of the PpC value Because this process is repeated multiple times before the display is updated this may also result in PpC v...

Page 41: ...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 classi...

Page 42: ...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...

Page 43: ...nactivity 1 60 minutes Schemes Setting for the preferred colour schemes the screen brightness and the acoustic notifications Default settings Reset device to default settings Import Export Imports exp...

Page 44: ...ch measured object identified using a QR code The next time the same object is measured this data is then displayed as reference values in the comparison screen Regularly exchanging this file between...

Page 45: ...hat was just exported configuration xml or former_measurements xml use a UBS cable to connect the device to a PC or an Android phone 6 Copy the file to your PC or send it to another phone or cloud bas...

Page 46: ...nation 3 Tap the button in the main menu and open the System settings menu 4 Tap on the Pair Bluetooth button The PD Scan will now search for Bluetooth devices nearby 5 Select the required Bluetooth d...

Page 47: ...ve measurement internal external Number of steps Number of measurement points for a TEV measurement sequence 2 or 3 1st position 2nd position 3rd position Order of the measurement points at the substa...

Page 48: ...played 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 This will then be marked wi...

Page 49: ...you wish to adjust the evaluation thresholds 3 Select the threshold you want to adjust Threshold Description ORANGE dB value above which the measured level is displayed in an orange text colour RED dB...

Page 50: ...s value defines the upper quantity threshold If this value was set at 50 as shown in the example below a total of 50 charge pulses with the exact same amplitude and phasing must be measured before the...

Page 51: ...tion about the hardware status of the device Please specify in the event of servicing Free memory Display indicating the internal memory still available The remaining capacity should be checked regula...

Page 52: ...essaging or a cloud based service using a compatible Android file management app 6 2 Transferring measured data onto a PC In order to copy the measured data onto a Windows PC the PD Scan must be conne...

Page 53: ...sing the 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 firmwar...

Page 54: ...the Next step button 5 Click on the Select background noise button 6 Use the Windows Explorer to navigate to the directory containing the measured data This can either be any measured data archive fol...

Page 55: ...The measured data are shown Information about the measurement object are entered in the input fields on the left side of the screen The measurements and diagrams that should appear in the report can b...

Page 56: ...several measured data folders then the order in which they appear in the report can be changed using drag and drop The button is used to return to the last step at any time if necessary in order to m...

Page 57: ...equency of the pulses as well as the type of decoupling are based on the current settings which can be adjusted as following using the buttons on the front panel Button Setting Selection of operating...

Page 58: ...ond between 0 and 50 pulses in 20 ms Depending on the operating mode selected proceed as following when making measurements on the demonstrator box Operating mode to be set on demo box and PD Scan Pro...

Page 59: ...EV 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 t...

Page 60: ...y contact your sales or service partner at Megger Do not open the device yourself If the device is not used for an extended period it should be stored in a dust free and dry environment In the event o...

Page 61: ...ments later 5 Also let go of the middle button A few seconds later the Bootloader message should appear in the display 6 Start the PDSCANUBL software on your PC by double clicking pdscanubl exe 7 Conn...

Page 62: ...to user actions Perform a hard reset by pressing the left and right button at the same time for a few seconds The function test using the function tester FC 1 fails The LED on the function tester FC...

Page 63: ...hie z me nor da ka iztr d jumu uz kura t atrodas nedr kst izmest kop ar parastiem m jsaimniec bas atkritumiem T k tas ir izstr d jums ko cits citam p rdod un lieto tikai uz mumi tad to nedr kst ar izm...

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