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Interpreting Graphic Results

49

6.3

Composite Insulator Tester Results: Healthy Insulators

The graphs below show the insulator skirt (shed) on the horizontal axis, with “1” being the
insulator skirt nearest the tower side. The vertical axis represents the strength of the electrical
field in kilovolts/meter, expressed as “E-field (kV/m)”. The E-field is determined longitudinally at
each skirt along the energized composite (polymeric) insulator by the Probe.

The smoothness of the curves of the E-field characterizes a healthy insulator.

Skirt (Shed) Number

Skirt (Shed) Number

Figure 20: Graphic representations of the E-Field of two Healthy Composite

(polymeric) Insulators shown in the Log scale

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Содержание 3782091C/50

Страница 1: ...ability Model 3782091C 50 3782091C 60 For Composite Polymeric Insulators User Manual Description and Operation Guide Disclaimer Notice Although Positron Inc has made every effort to ensure the accurac...

Страница 2: ......

Страница 3: ...ork in those environments Although this instrument does not make electrical contact with the high voltages IT IS ESSENTIAL THAT THIS INSTRUMENT IS USED COUPLED WITH A SUITABLE HIGH DIELECTRIC STRENGTH...

Страница 4: ......

Страница 5: ...ndows based Insulator Tester Software 21 4 1 Insulator Tester Software Description 21 4 2 The Bluetooth Serial Adaptor 22 4 3 Instant Graphical GO NO GO Reporting Capability 22 5 0 Using the Composite...

Страница 6: ...s Unhealthy Insulators 50 6 5 Comparing Historical Graphs 50 7 0 Specifications 55 8 0 Recommended Practices 59 8 1 Horizontal and V Scan of a Composite insulator 59 8 2 Vertical Scan of a Composite I...

Страница 7: ...1 Chapter 1 General Information...

Страница 8: ...General Information 2...

Страница 9: ...uct names other than Positron s mentioned herein may be trademarks and or registered trademarks of their respective companies Confidentiality Notice The information contained in this document is the p...

Страница 10: ...ing Montreal Canada August 25 29 1997 6 G H Vaillancourt P Bilodeau Diagnostic Testing of Composite Insulators Used on Series Compensation Platforms in Hydro Quebec Conference Proceedings of 11th Inte...

Страница 11: ...5 Chapter 2 Overview...

Страница 12: ...Overview 6...

Страница 13: ...d the data is downloaded to a database installed on the Tablet PC for analysis The graph displaying the E Field of the insulator is clearly displayed on the Tablet Laptop while in the field enabling G...

Страница 14: ...Overview 8 2 3 Overview Bluetooth adapter Figure 1 Composite Insulator Tester C Tester Model s 3782091C 50 50Hz 3782091C 60 60Hz IR1 IR2...

Страница 15: ...GO NO GO Insulator tester 50 Hz standard 10 sled 3782091C 50 220Vac 120Vac cable charger replacement 378126 Rechargeable battery pack replacement for the Probe 378127 12Vdc auxiliary automotive power...

Страница 16: ...10...

Страница 17: ...11 Chapter 3 Composite Insulator Tester Elements...

Страница 18: ...Composite Insulator Tester Elements 12...

Страница 19: ...in wall transformer 120Vac 220Vac input 12Vdc output includes international wall plug adaptors Spare switch cover The Probe Operator Interface see Figure 2 consists of a push button a Status LED an i...

Страница 20: ...arger are equipped with an LED status to report on the charging status When first plugged in to charge the LED will glow red After 9 hours on charge the LED will glow green indicating that the chargin...

Страница 21: ...ed skids require adjustment See Figure 6 3 5 Placement of Probe on the Insulator Sled The Composite Insulator Probe attaches to the companion sled via four key hole openings on the insulator sled Note...

Страница 22: ...acement or establishing relative safety for live line work The transfer of data to the Tablet on site also avoids the risk of data loss should the tester be switched off after testing The Tablet Lapto...

Страница 23: ...setting If this setting was changed by a user it is important to adjust the intensity of the screen back to the maximum While the Tablet is operating from its battery select Best performance after se...

Страница 24: ...18...

Страница 25: ...19 Chapter 4 Windows Based Software...

Страница 26: ...Windows Based Software 20...

Страница 27: ...sting session To remotely download the data scanned by the insulator tester To identify last scanned insulator from the list To display the graphic representation of the E field along with the identif...

Страница 28: ...lacement or establishing safety levels for live line work can then be made During the scanning of an insulator the Probe Operator manipulates the Insulator Tester with a hot stick while the Tablet Ope...

Страница 29: ...23 Chapter 5 Using the Composite Insulator Tester Software...

Страница 30: ...Using the Composite Insulator Tester Software 24...

Страница 31: ...d insulator on the screen of the Tablet Laptop and the relative health of the insulator can be assessed while in the field Using the Tablet Laptop the Tablet Operator can choose to Accept or Reject th...

Страница 32: ...r Identification List you have 3 choices Select Edit Insulator Identifications and type in the list on the tablet PC Install the Positron Tester Software on any Windows based Desktop and type in the l...

Страница 33: ...next field using the TAB key on your keyboard The ENTER key will bring you to the field immediately beneath Note that number shown in the upper left corner of the Identification List Editor correspond...

Страница 34: ...he Probe On To activate the Probe remove the Power Switch Cover and move the power switch to the right toward the DB 9 connector as shown in Figure 10 The Probe will first enter the Power On Self Test...

Страница 35: ...less if the IR sensors IR1 IR2 are manually interrupted 5 If the Red LED begins flashing then the Probe s infrared sensors are being obstructed Ensure that there are no obstructions and that the lense...

Страница 36: ...ty between the Tablet Laptop and the Probe prior to going into the field The Check Bluetooth Serial Port dialogue screen will appear Select the COM Port used by the Tablet Laptop to communicate with t...

Страница 37: ...COM port will need to be reconnected once the unit is taken to the field for a scanning session It is important not to transport the Insulator Tester to the testing location with the Bluetooth Adapter...

Страница 38: ...ure that the Probe is in Awake Mode by pressing the push button of the Probe See Figure 11 If required select Get Revision of Probe after the Probe is awakened This step verifies that the Tablet Lapto...

Страница 39: ...o activate the Probe remove the Power Switch Cover and move the power switch to the right toward the DB 9 connector as shown in Figure 12 The Probe will first enter the Power On Self Test POST as desc...

Страница 40: ...th an annunciating tone With communication confirmed the Probe Operator can now ascend the Tower Once in position the Probe Operator should press the Probe s button to ensure it is in Awake Mode If no...

Страница 41: ...oad the scanned data to the Tablet Laptop PC to view the resulting graph and will Accept or Reject the scan In either case the data is wiped from the Probe leaving the Insulator Tester ready for the n...

Страница 42: ...taken at each insulator skirt shed The Insulator Tester may be moved at a speed from 1 skirt shed per second up to 10 skirts sheds per second 3 Remove the Insulator Tester from the insulator and wait...

Страница 43: ...e but that there is no data in the Probe to download The Download button will still turn GREEN indicating that the Windows based Insulator Tester Software is able to communicate with the Probe but tha...

Страница 44: ...can select and open the Insulator ID List created before the testing session Select the Insulator just scanned from the list created earlier and select TAG Select Graphic to see one or more graphs of...

Страница 45: ...n t apply enough pressure on the hot stick Curves don t match If two scans have been performed the two curves should be almost identical Practice session The first time it is recommended to perform so...

Страница 46: ...n If this was the last planned scan the Tablet Operator may elect to A Select Sleep Mode to put the Probe into sleep mode The Probe can be awakened by pressing its Push Button B Optionally select Clos...

Страница 47: ...th the E field curves would therefore not be included within the database for future use There is a risk of losing all data stored in the Probe if its power is switched off or its internal battery bec...

Страница 48: ...press Connect to probe 4 Select the COM port and press Download 5 After receiving the message Data received successfully press the Identify button 6 Select Default id file then press on TAG button 7 P...

Страница 49: ...a given insulator in the database to evaluate its degradation over time See Section 6 6 for a description of superimposed graph comparison To search the historic of an insulator Browse and select the...

Страница 50: ...ger cable to the Probe and plug the universal wall transformer to a 120 220 Vac source 50 or 60 Hz If the battery is completely discharged No light on power up switch the Probe OFF while the battery i...

Страница 51: ...45 Chapter 6 Interpreting Graphic Results...

Страница 52: ...Interpreting Graphic Results 46...

Страница 53: ...f the scans and is selectable B Shows the date of scan and the type of insulator tester CTester Composite Tester C Detailed information of the scanned insulator taken from the user s insulator list D...

Страница 54: ...lower voltage applications The Log display mode is used to amplify the small variations in the lower portion of the curve for longer composite polymeric insulator Figure 18 Example of scan of a bad in...

Страница 55: ...esents the strength of the electrical field in kilovolts meter expressed as E field kV m The E field is determined longitudinally at each skirt along the energized composite polymeric insulator by the...

Страница 56: ...icate defects The severity of the deviation in the curve of the E field reflects the severity of the defect This graph displays a connected carbon tracking fault Skirt Shed Number Skirt Shed Number Fi...

Страница 57: ...can be superimposed for comparison Refer to Figure 22 Place one or more graphs over the other and select Compare to reduce the opaqueness so one graph is visible through the other Figure 22 One Compo...

Страница 58: ...52...

Страница 59: ...53 Chapter 7 Specifications...

Страница 60: ...Specifications 54...

Страница 61: ...mulative use between charges 12 hours Maximum period between battery charges 1 day Operating temperature range Probe Bluetooth Adapter 4oF to 140oF 20oC to 60oC 14o F to 158o F 10o C to 70o C Composit...

Страница 62: ...Specifications 56...

Страница 63: ...57 Chapter 8 Recommended Practices...

Страница 64: ...Recommended Practices...

Страница 65: ...lator moving the Probe from 1 skirt shed per second up to 10 skirts sheds per second toward the high voltage end and withdraw the Probe 1 To facilitate the manipulation the hot stick should be almost...

Страница 66: ...ng the insulator moving the Probe from 1 skirt shed per second up to 10 skirts sheds per second toward the high voltage end and withdraw the Probe To facilitate the manipulation the hot stick should b...

Страница 67: ...w voltage end of the insulator and slide the Probe along the insulator moving the Probe from 1 skirt shed per second up to 10 skirts sheds per second toward the high voltage end and withdraw the Probe...

Страница 68: ...Recommended Practices 62...

Страница 69: ...63 Chapter 9 Important Information...

Страница 70: ...Important Information 64...

Страница 71: ...ing configuration use and interpretation of data produced by the equipment contact Technical Customer Support TCS at 1 888 577 5254 Option 1 Option 3 US and Canada or 1 514 345 2220 Option 1 Option 3...

Страница 72: ...hing to the contrary contained herein Positron s sole obligation and liability and the customer s sole remedy for Positron s negligence breach of warranty breach of contract or for any other liability...

Страница 73: ...contained in this manual is not intended to and does not cover all details usages or methods of use of this equipment and such information is not intended to discuss all situations or contingencies wh...

Страница 74: ...n Tester is used for Porcelain and Glass insulators Composite Tester The Composite Tester is used to detect floating or connected defects for Composite or Polymeric insulators Universal Substation Ins...

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