TDR 2000 english - Electrocomponents
Contents
1. Line Line LRCD220 only Supply 100 V 480 V 45Hz to 65Hz Prospective Fault Current PSCC Prospective fault current Nominal supply voltage Loop resistance Accuracy is derived from loop test 1A 199 A 1 A resolution 0 20 kA 1 99 kA 10 A resolution 2 0 kA 19 9 kA 100 A resolution RCD Testing RCD Test Ranges to EN61557 6 LRCD200 210 10 mA 30 mA 100 mA 300 mA 500 mA LRCD220 10 mA 30 mA 100 mA 300 mA 500 mA 1000 mA Supply voltage LRCD200 210 200 V 280 V 45Hz to 65 Hz LRCD220 100 V 280 V 45Hz to 65 Hz Test Current Accuracy No Trip Test 1 21 8 to 2 Trip Test A 5 2 to 8 Trip Time 1 1ms Fault Touch Voltage Displayed range 0Vto50V Error 5 15 0 5 V 21 Temperature and humidity Operating Range 5 C to 40 C Operating Humidity 93 R H at 40 C max Storage Range 25 C to 70 C Maximum altitude 2000m Environmental Protection IP54 Safety IEC 61010 Meets the requirements of IEC61010 1 Cat III 300V phase to earth EN61557 Complies with the following parts of EN61557 Electrical safety in low voltage systems up to 1000 V ac and 1500 V dc Equipment for testing measuring or monitoring of protective measures Part1 General requirements Part3 Loop resistance Part6 Residual current devices Power supply Battery 8x 1 5 V cells IEC LR6 type AA alkaline Rechargeable 8x 1 2V NiCd or NiMH cells Battery Life 20002. LRCD200 LOOP amp RCD TESTER BA Arl Ar u Phase connection Warning Mai lug test eee Read user guide lead connector LRCD220 Earth connection LRCD220 LOOP amp RCD TESTER FMAX a un ar Ml ye MAX Mains plug test Warnin lead connector 9 Phase connection E Read user guide LRCD200 LRCD220 Lid open closure 1 Open lid by lifting up front panel tab 1 2 Fold away underneath instrument 2 amp 3 and push into retaining slot 4 PREPARATIONS FOR USE ALL INSTRUMENTS Batteries The Megger LRCD series instruments are supplied with batteries fitted When batteries become exhausted refer to page 19 battery replacement Warning Do not switch the instrument on with the battery cover removed Preliminary test lead check Functional verification Before each use of the instrument visually inspect the test leads prods and crocodile clips to confirm that their condition is good with no damaged or broken insulation GENERAL OPERATING INSTRUCTIONS Tests lock x LRCD 220 only The LOCK 4 indicates when the Hi current loop test range is locked ON It is activated by holding down the T lock button and pressing the TEST button When activated the Hi current loop resistance measurement will start when the instrument is connected to a voltage The test lock remains on for 30 seconds after which it resets to off Test inhibit The fol
3. the positive half cycle The trip time will be displayed 5I Tripping test at 5 x the rated RCD trip current The trip time will be displayed in milliseconds NOT LRCD200 0 or 180 Some RCDs are sensitive to the polarity of the supply i e whether the test current is applied on the instantaneous rising or falling part of the supply cycle Tests should therefore be performed at 0 and 180 and the maximum time recorded Auto test Automatically tests 1 2I I and 5I at 0 at 180 RampTest Used to check the trip current of an RCD RCD type selection To select the RCD type to be tested 1 Set the top RCD selection knob top knob to the desired RCD current range 2 Set the RCD test knob lower knob to 1 21 I or 5I as required 3 Press the TYPE button to select the type of RCD under test Options are AC Standard displays AC Default AC Selective displays AC S DC Sensitive displays dc DC Selective displays dc S 1 21 RCD Non tripping measurement LRCD210 and 220 To test the tripping time of the installed RCD under test Range selection 1 Connect the mains plug or test lead 3 wire Red Green Black test lead to the instrument 2 Plug in the mains plug test lead to the wall outlet or the 3 wire test lead across the RCD refer to connection drawing go to page 10 also ensure the Black lead is connected to earth 3 Set the top RCD selection knob to the correct range for the RC
4. will indicate supply polarity Note The presence of a voltage between phase and earth does not prove earth continuity as the earth could have a high resistance and a voltage would still be measured To test earth continuity refers to the sections on loop testing 11 LOOP TESTING Two loop testing options are available No Trip on the LRCD200 210 and Hi test on the LRCD220 Non tripping loop test No Trip Earth loop impedance measurement at a power socket The No Trip range is a high resolution 0 01 ohm low test current earth loop resistance measurement range It requires a connection to neutral but allows quick and accurate measurement of the earth loop resistance without tripping all RCDs with a rated current 30 mA or higher To perform a No Trip loop test Range selection 1 Select the No Trip test range A non trip loop test is confirmed on the display with the symbol Testing 1 Connect the mains plug test lead to the instrument 2 Insert the plug into an installation socket 3 Supply voltage is displayed 4 Press the TEST key 5 After a test period of up to 20 seconds the measured loop value is displayed If desired the test can be repeated by pressing TEST again Using the three wire lead set The No Trip loop test can be carried out where a power socket is not available using the three wire lead set 1 Connect the RED lead to Phase BLACK lead to neutral and GREEN lead to e
5. 1 2V NiMH Low battery warning symbol The battery condition is continuously displayed by the symbol MICH When the batteries are exhausted symbol will show DT and the instrument switches off Batteries should be replaced when 2 bars are displayed If the symbol appears as less than fully charged with new batteries fitted check for correct polarity Note Fully charged NiMH or NiCAD rechargeable batteries show a lower charge than Alkaline batteries and may not give much warning before becoming exhausted To replace batteries Warning Do not switch the instrument on with the battery cover removed 1 Switch off the instrument and disconnect the instrument from any electrical circuits 2 The rear cover must not be opened if the test leads are connected 3 To remove the rear cover release the screw at the bottom of the cover and lift the cover upwards A Fit new batteries observing the correct polarity as marked on the battery compartment 5 Replace the cover Warning Incorrect battery cell polarity can cause electrolyte leakage resulting in damage to the instrument Check that the Battery level indicator displays a full charge before using the instrument A low battery charge may indicate a reversed cell Note Battery cells should not be left in an instrument which may remain unused for extended periods of time Fuse Blown indication The fuse blown symbol instrument is fitted with a factory fitted fuse a
6. D under test 4 Set the bottom range knob to 1 21 The RCD trip indicator will display a closed symbol 5 Ensure the display shows the mains voltage 6 Press the TEST button The instrument should display gt 1999ms and the RCD should NOT trip 7 Refer to the application note on Touch Voltage at the end of this section NOTE If the RCD should trip while performing a 1 21 test the error message trP will be displayed instead of the time display 1xI RCD trip time measurement To test the 1xI trip time of the installed RCD 1 Repeat the previous test for 1 21 but with the bottom range knob set to I The RCD trip indicator will display an open symbol Les 2 The instrument should display the RCD trip time in milliseconds If the display shows gt 300 ms the RCD has failed to trip in the appropriate time Check your test lead connections to the RCD and repeat the test If the RCD still fails to trip suspect a faulty RCD Note See also 0 180 testing below The RCD test may abort with gt 25 V or gt 50 V depending on touch voltage setting message if the loop resistance is so high that the test cannot proceed 5xI RCD trip time measurement 1 Repeat the previous test for 1 21 but with the bottom range knob set to 5xL The RCD trip indicator should display an open symbol a 2 The instrument should display the RCD trip time in milliseconds If the display shows gt 40 ms the RCD has failed to
7. EST button and turn the range knob to any ON position N Keep the button held down until the instrument displays the SET warning 3 Now release the TEST button 4 Press the TEST button again to view the current setting for line neutral swapping u The display shows L L instrument will perform tests with L amp N swapped or L N instrument will not perform tests with L amp N swapped 6 Press the LOCK button or the PFC button to change the setting 7 Press the TEST button to exit from the set up menu RCD Touch voltage selection To set the touch voltage inhibit limit 1 With the instrument switched OFF hold down the TEST button and turn the range knob to any ON position N Keep the button held down until the instrument displays the SET warning w Now release the TEST button A Press the TEST button twice to view the current settings for the touch voltage The display shows the fault voltage limit 25 V or 50 V If the fault voltage display is active a bar graph display will also appear 5 Press the 0 180 button to change the limit setting from 25V to 50V and back 6 Press the TYPE button to turn bar graph display ON or OFF 7 Press the TEST button to exit from the set up menu Test leads All test leads form part of the measuring circuit of the instrument and must not be modified or changed in any way or be used with any ot
8. Megger LRCD200 Series Combined Loop and RCD Tester USER MANUAL A SAFETY WARNINGS m Safety Warnings and Precautions must be read and understood before the instrument is used They must be observed during use m Continuity of protective conductors and earthed equipotential bonding of new or modified installations must be verified before carrying out RCD tests or earth fault loop impedance tests m Do not leave the instrument connected to the mains supply when not in use m Circuit connections and exposed metalwork of an installation or equipment under test must not be touched m Ensure that hands remain behind guards of probes clips when testing m The instrument should not be used if any part of it is damaged m Test leads probes and crocodile clips must be in good order clean and with no broken or cracked insulation m The battery cover must be in place whilst conducting tests m Voltage indicator LED s cannot reveal a N PE supply reversal m National Safety Authorities may recommend the use of fused test leads when measuring voltage on high energy systems m When making a 2 wire measurement with the 3 wire lead set for safety reasons the black test lead should be connected together with the green test NOTE THE INSTRUMENT MUST ONLY BE USED BY SUITABLY TRAINED AND COMPETENT PERSONS Users of this equipment and or their employers are reminded that Health and Safety Legislation requires them to carry out valid risk assessments
9. arth 2 Supply voltage is displayed 3 Press the TEST key 4 After a test period of up to 20 seconds the measured loop value is displayed Hi current loop test Hi LRCD220 only The Hi Loop test performs a 2 wire loop test provides a rapid loop test designed for non RCD protected circuits Note During all Hi tests the BLACK neutral test lead should be connected to the same connection point as the GREEN earth test lead Range selection 1 Set the instrument to the Hi Loop test range A Hi current loop test is confirmed on the display with the symbol Lo which indicates the possibility of tripping an RCD if fitted Phase Earth loop impedance not at a power socket Testing 1 Connect the Red Green lead set or the 3 wire test lead to the instrument Connect the RED L1 lead to PHASE and the GREEN L0 lead to EARTH Black lead connect the Black lead to the Green lead N 3 The supply voltage is displayed 4 Press the TEST button to start a loop test 5 After a short delay the measured loop value is displayed If desired the test can be repeated by pressing the TEST button Bonded Metalwork Testing Repeat the above test but with the Green lead connected to the exposed metalwork For a Hi Current Phase to Earth loop impedance measurement at a power socket repeat the above test using the Mains plug test lead supplied Phase Neutral or Phase Phase loop impedance 1 Connect the 3 wire test
10. consecutive tests Weight All units 980gms Dimensions All units 203 x 148 x 78 mm 22 E M C In accordance with IEC61326 including amendment No 1 BASIC AND SERVICE ERRORS ACCESSORIES Basic and service errors loop test ranges The basic error is the maximum inaccuracy of the instrument under ideal conditions whereas the service error is the maximum inaccuracy taking into effect of battery voltage temperature interference and system voltage and frequency where applicable Item 3 wire test lead set and crocodile clips Mains plug test lead BS 1363 BS Versions Mains plug test lead CEE 7 7 EN versions Mains plug test lead AS NZS 3112 AU versions Quick start guide Megger certification software PowerSuite Pro Lite 16th Order Code 6220 782 6220 740 6220 741 6220 790 5174 208 6111 695 23 REPAIR AND WARRANTY The instrument contains static sensitive devices and care must be taken in handling the printed circuit board If an instrument s protection has been impaired it should not be used but sent for repair by suitably trained and qualified personnel The protection is likely to be impaired if for example it shows visible damage fails to perform the intended measurements has been subjected to prolonged storage under unfavourable conditions or has been subjected to severe transport stresses NEW INSTRUMENTS ARE GUARANTEED FOR 3 YEARS FROM THE DATE OF PURCHASE BY THE USER Note Any unauthoriz
11. ct reading Any leakage current as a consequence of other appliances connected to the supply under test may affect the reading If the Phase Earth loop is being measured this leakage may be due to filter capacitors etc Test results may be adversely affected by supply voltage fluctuations or electrical noise during a measurement It is recommended that tests are repeated and the results verified if measurement results are considered abnormal Errors can be reduced by m Use the 2 wire lead set with prods and making a firm connection to clean conductors m Make several tests and taking the average m Ensure that potential sources of noise in the installation are isolated switched off eg automatically switched loads or motor controllers m Ensuring that the instrument is calibrated 14 RESIDUAL CURRENT DEVICE RCD TESTING Method of measurement The plug ended test lead or 3 wire lead should be used for these measurements A constant current source is connected across the supply and the time taken for the supply to trip is measured by the instrument in milliseconds ms The LRCD200 LRCD210 and LRCD220 can perform the following RCD tests Type The RCD type is selectable from AC AC Selective DC and DC Selective 1 21 Non tripping test at half the rated RCD trip current for 2 seconds during which the RCD should not trip NOT LRCD200 I Tripping test at the rated RCD trip current started on zero crossing of
12. d Warranty 24 Symbols used on the instrument are A 8 CE N13117 C Caution refer to accompanying notes Equipment protected throughout by Double Insulation Class I Equipment complies with current EU directives Equipment complies with C tick requirements INTRODUCTION GENERAL DESCRIPTION Thank you for purchasing the Megger LRCD200 series The LRCD200 series test instruments have the following features For your own safety and to get the maximum benefit from your instrument please ensure that you read and understand the following LRCD200 LRCD210 LRCD220 safety warnings and instructions before attempting to use the instruments not UK This user manual describes the operation and functions of the following Loop testing PT LRCD series of Loop and RCD testers Non tripping loop test a LRCD200 PFC n LRCD210 si Single phase LRCD220 i Hi current loop test a Touch Contact voltage display om om Selectable 25 50 V touch voltage 10 30 100 300 500 mA ranges oe a DC Selective RCD tests Selectable phase 0 180 Ramp test 20 to 110 General testing Frequency Phase rotation Reverse polarity operation Continental instruments only Backlight Mechanical BS1363 CEE7 7 AS NZS 3112 plug variants IP54 Working voltage 230 V Working voltage 110 amp 230 V Calibration certificate LRCD200 LRCD210 LRCD220 not UK CASE CONTENTS There are imp
13. ed prior repair or adjustment will automatically invalidate the Warranty INSTRUMENT REPAIR AND SPARE PARTS For service requirements for Megger Instruments contact Megger Limited or Megger Archcliffe Road Valley Forge Corporate Centre Dover 2621 Van Buren Avenue Kent CT17 9EN Norristown PA 19403 England U S A Tel 44 0 1304 502 243 Tel 1 610 676 8579 Fax 44 0 1304 207 342 Fax 1 610 676 8625 or an approved repair company UKrepairs megger com 24 Returning and Instrument for Repair If it is necessary to return an instrument for repair a returns authorisation number must first be obtained by contacting one of the addresses shown You will be asked to provide key information such as the instrument serial number and fault reported before the number is issued This will enable the Service Department to prepare in advance for the receipt of your instrument and to provide the best possible service to you The returns authorisation number should be clearly marked on the outside of the product packaging and on any related correspondence The instrument should be sent freight paid to the appropriate address If appropriate a copies of the original purchase invoice and of the packing note should be sent simultaneously by airmail to expedite clearance through customs For instruments requiring repair outside the warranty period a repair estimate will be submitted to the sender if required before work on the instrume
14. her electrical instrument or appliance The mains plug test lead supplied with the Megger Tester is a test lead that forms part of the measuring circuit of the instrument The overall length of this lead must not be altered If the power cord plug is not suitable for 10 your type of socket outlets do not use an adaptor You may change the plug once only by cutting the cord as close to the plug as possible and fitting a suitable plug The colour code of the cord is Earth Ground Yellow Green Neutral Blue Phase Line Brown Note A plug severed from the power cord must be destroyed as a plug with bare conductors is hazardous in a live socket outlet Test lead connection The supplied test leads should be connected to the appropriate sockets on the rear of the instrument marked LO and L1 or to the 3 way test socket Standard test probes and crocodile clips are supplied for connection to the circuit under test The test lead supplied with the LRCD200 LRCD210 and LRCD220 provides connection for 3 wire testing using the 3 wire red black and green lead set 6220 782 or mains plug lead 6220 740 Application This instrument may be connected live to earth or between live conductors of systems that have a rated voltage of 300V a c rms to earth and an installation overvoltage Category II or lower This means that the instrument may be connected to any fixed wiring of a building installation but not to primary supply circui
15. instrument automatically displays the sequence of phase rotation To determine phase sequence 1 Connect the Installation Testers as follows Line 1 Red lead to Red phase Line 2 Green lead to Yellow phase Line 3 Black lead to Blue phase 2 The symbol is displayed will show the phase sequence indicates R B Y sequence or 1 2 3 ad indicates R Y B sequence or 1 3 2 Note If one of the lines is faulty neither of the symbols is displayed and just the normal neon polarity indication is shown 18 AUTO POWER DOWN To extend battery life the instrument will automatically switch off six minutes after the last operation The instrument ccan be switched off manually by selecting OFF with the rotary switch or switched back on again by pressing the TEST button Messages for information and warnings RCD test types AC AC S DC DC S Warnings trp hot chk noS gt 50V gt 25V lt V Other messages L L L N SEt OFF AC type AC Selective RCD DC type RCD DC Selective RCD Unexpected disconnection Overheated instrument Check test lead connections Noise Touch voltage exceeded for 50V settings Touch voltage exceeded for 25V setting Insufficient supply voltage for test Will test with L N swapped Will NOT test with L N swapped Setup menu Instrument is about to switch off REPLACING BATTERIES AND FUSES Battery type 8x LR6 AA 1 5 V Alkaline or 8x 1 2V NiCAD or 8 x
16. lead to the instrument 2 Connect the RED L1 lead to PHASE Connect the GREEN LO lead and the BLACK lead Black lead ensure the black lead is connected to the green lead to NEUTRAL or the 2nd PHASE for Phase to Phase loop measurement on the LRCD220 Qo The supply voltage is displayed A Press the TEST button to start a loop test un After a short delay the measured loop value is displayed If desired the test can be repeated by pressing the TEST button again Note Phase Phase 415 V loop test is only possible on the LRCD220 Prospective Fault Current display PFC 1 On completion of a test press the PFC key 2 The prospective fault current is displayed in Amps or kA Notes The prospective short circuit current PSCC of a circuit is the largest Prospective Fault Current PFC In a single phase system this would be the larger of the earth loop PFC and the neutral loop PFC In a multi phase system phase phase loops also need to be considered and these can be measured using the Hi switch position The PFC is calculated by using the sum Nominal supply voltage PFC Loop resistance The supply voltage used in the calculation depends on the measured voltage The instrument uses the following voltage values Actual measured Nominal voltage voltage gt 80 V and lt 150 V 110 V LRCD220 only gt 150 V and lt 300 V 230 V gt 300 V 400 V LRCD220 only PFC measurement accuracy A
17. lowing conditions may cause the instrument to inhibit testing Out of range supply voltage Ifan out of range voltage or frequency exists on the circuit under test or on a very noisy mains supply testing will be automatically inhibited The RCD tests requires a minimum supply voltage to operate If the warning lt V is displayed the supply voltage is below that required to perform an RCD test supply voltage indication Overheating Repetitive loop testing generates heat within the instrument If this heat becomes excessive the instrument will warn the operator and prevent further testing until the instrument has had a chance to cool down Fuse Blown A fuse blown will prevent the instrument from making further tests The fuse indicator will be displayed Default voltmeter The default voltmeter automatically operates in all test modes indicating connection to a live system Auto Power down To extend battery life the instrument will automatically switch off six minutes after the last operation The instrument can be switched off manually by selecting OFF with the rotary switch or switched back on again by pressing the TEST button Backlight operation LRCD 220 only The LRCD LCD display may be backlit to allow readings to be seen in adverse lighting conditions The backlight function can be selected at any time while the instrument is switched on by pressing the BACKLIGHT button The backlight function will
18. n accurate PFC measurement requires an accurate measurement of the loop resistance The difference of a few digits in the loop resistance measured will have a large effect on the PFC displayed Warning messages Noise Indication UL The symbol A is displayed when excessive noise caused by other equipment exists on the circuit under test This noise can affect the accuracy of the loop measurement The operator is advised to repeat the measurement or if the noise symbol continually appears investigate the cause Voltages greater than 280V gt 480V on LRCD220 LRCD200 210 If a voltage greater than 280 V is detected the display will show gt 280 V 13 LRCD220 If a voltage greater than 480 V is detected between phases the display will show gt 480 V Over temperature hot To protect the instrument from over heating during Loop testing thermal protection is fitted If the message hot appears in the display together with the symbol when loop testing the instrument must be allowed to cool down before further attempts are made at loop testing Possible sources of error The reading depends on a measurement of the supply voltage and therefore noise or transients caused by other equipment during the test could cause an error in the reading One way to check for these is to do two tests and look for any difference in value The instrument will detect some sources of noise and warn the user where other instruments may give an incorre
19. nd should only be replaced indicates that an internal fuse has failed This by an authorised Megger repair centre To extend battery life the instrument will automatically switch off six minutes after the last operation The instrument can be switched off manually by selecting OFF with the rotary switch or switched back on again by pressing the TEST button 19 PREVENTIVE MAINTENANCE TECHNICAL SPECIFICATION Clean only with a damp cloth Do not use any alcohol based cleaning fluids as they may leave a residue 20 Voltage measurement LRCD200 210 220 0V 500V Accuracy 2 2 digits Frequency measurement LRCD200 210 220 Range 25Hz to 450Hz Accuracy 25 0Hz to 199 9Hz 0 1Hz 200Hz to 450Hz 1Hz Phase rotation indicator LRCD220 only Three wire identification of phase rotation Loop testing Loop ranges to EN 61557 3 LRCD200 210 220 No Trip Loop test 3 wire Line to Earth Supply LRCD200 210 200 V 280 V 45Hz to 65Hz LRCD220 100 V 280 V 45Hz to 65Hz Nominal test current 15 mA Loop Accuracy 0 01Q 9 99 Q 45 0 03 Q 10 02 99 9 Q 45 0 5 Q 100Q 999 Q 45 5 Q 1 00 kQ 2 00 kQ 5 30 Q HI current Line Earth loop test 2 wire LRCD220 only Supply 100 V 480 V Nominal Test Current 15 mA to 2 4 A Loop accuracy 0 012 9 99 Q 45 0 03 Q 10 00 99 9 Q 5 0 5 Q 100Q 999 Q 5 5 Q 1 0 KQ 2 00 KQ 5 30 Q
20. nt commences Approved Repair Companies A number of independent instrument repair companies have been authorised for repair work on most Megger instruments using genuine Megger spare parts A list of approved companies is available from the UK address shown on this page Spare parts are also available 26 Megger Limited Archcliffe Road Dover Kent CT17 9EN England T 44 0 1 304 502101 F 44 0 1 304 207342 E uksales megger com Megger 4271 Bronze Way Dallas Texas 75237 1019 USA T 1 800 723 2861 USA ONLY T 1 214 333 3201 F 1 214 331 7399 E ussales megger com Megger products are distributed in 146 countries worldwide This instrument is manufactured in the United Kingdom The company reserves the right to change the specification or design without prior notice Megger is a registered trademark Part No LRCD200_UG_en_V06 0507 www megger com Megger Z A Du Buisson de la Couldre 23 rue Eugene Henaff 78190 TRAPPES France T 33 0 1 30 16 08 90 F 33 0 1 34 61 23 77 E infos megger com Megger Pty Limited Unit 26 9 Hudson Avenue Castle Hill Sydney NSW 2125 Australia T 61 0 2 9659 2005 F 61 0 2 9659 2201 E ausales megger com Megger Megger Limited 110 Milner Avenue Unit 1 Scarborough Ontario M1S 3R2 Canada T 1 416 298 9688 Canada only T 1 416 298 6770 F 1 416 298 0848 E casales megger com
21. of all electrical work so as to identify potential sources of electrical danger and risk of electrical injury such as inadvertent short circuits Some national safety authorities recommend fused leads for voltage measurement on high energy systems If RCD or Loop tests are made it may cause the fuse to rupture and so they must be used with caution on voltage testing CONTENTS Safety warnings Introduction General description Case contents LCD Display Front panel Connection panel Lid open closure Preparations for use Batteries Preliminary test lead check General operating instructions Display warning symbols Setup procedure Reverse polarity or line neutral swapping Test leads Test lead connection LED indicators Loop testing Non tripping loop test No Trip Hi current loop test Hi Phase Earth loop impedance not at a power socket Phase Neutral or Phase Phase loop impedance Prospective fault current display PFC Warning messages Possible sources of error Residual current device RCD testing Voltage measurement Phase to earth voltage measurement Frequency Hz Phase sequence LRCD220 only OO VO 00 00 00 00 J NAAA da QU BPP RP PRP RP RP PRP PP he PP Pe ONNNHHAD OO QU NN N NY NH CO Replacing batteries and fuses 19 Low battery warning symbol 19 To replace batteries 19 Fuse blown indication 19 Preventive maintenance 20 Technical specification 20 Basic and service errors 22 Accessories and equipment 23 Repair an
22. ortant documents that you should keep for future reference Please complete the warranty card and return it to Megger as soon as possible to help us reduce any delays in supporting you should the need arise Carton contents LRCD200 LRCD210 and LRCD220 1x LRCD series loop tester 1 x 3 wire test lead with prods with clips 1 x Plug ended test lead 8 X AA LR batteries fitted in instrument 1 x Warranty card 1 x Certificate of test Lx Calibration certificate LX CD containing user manual 1 x Quick start guide LCD DISPLAY Fuse blown RCD test type indicator SN SS Touch voltage bargraph display Phase rotation Refer to User Manual R IM Measured results Mains noise Battery status Ranges FRONT PANEL LCD Display Neck strap slots 0 180 Lock 220 Test button RCD type selector AC AC Selective DC DC Selective PFC 220 Supply connection indicators L PE L N N PE RCD range select 10mA 30mA Test lead 100mA connections 300mA 500mA 1000mA 220 only Backlight On Off 220 PFC 200 210 Front panel cover folded under instrument Test selector 1 x 1 RCD trip time 210 220 1 x RCD trip time 5 x RCD trip time 210 220 Ramp V AC RMS Hz Frequency Phase ROT 220 only Auto RCD testing 220 only REAR PANEL CONNECTIONS CONTROL PADS LRCD 200 210 Earth connection or 2nd Phase connections 220 only
23. ror Measurement results can be affected by the following 1 Significant operating errors can occur if loads particularly rotating machinery and capacitive loads are left connected during tests 2 A poor connection to the circuit under test AUTO RCD TEST AUTO test will run the 1 21 I amp 51 plus 0 and 180 tests automatically The operator can stand by the RCD to reset it when it trips on the I amp SI tests 1 Connect to the circuit as per the 1 21 test 2 Select the RCD current rating on the top range knob and the AUTO function on the lower range knob 3 Press the TEST button to start the test The lock symbol will flash to indicate a AUTO test sequence is running and the display will show t1 to tS to indicate which test is running tl 1 21 t2 I at 0 t3 1 at 180 t4 Sl at 0 and t5 51 at 180 4 Reset the RCD each time it trips 5 On completion of testing the results can recalled by repeatedly pressing the 0 180 button To indicate each test result segments of the bar graph are displayed as below none 1 2l test I kltest III 5 I test Example shows 5I on 0 VOLTAGE MEASUREMENT When connected to a system using the three wire lead set or mains plug the instrument indicates the greatest voltage on the system Phase to Earth voltage measurement Note measured voltage must not exceed 300 V phase to earth To measure the voltage of the electrical supply 1 Set
24. switch off automatically 15 seconds after the instrument has finished testing Display warning symbols A Refer to user manual Any time the warning triangle is displayed the operator should refer to the user manual for further information m Range lock Displayed at any time the TEST button is locked in the on position OT Battery condition indication Refer to page 19 Fuse blown indicator appears when an instrument fuse has failed Refer to page 19 gt 280V Displayed on the LRCD200 210 indicates a supply voltage in excess of that allowed is present gt 480V Displayed on the LRCD220 indicates a supply voltage in excess of that allowed is present hot Indicates the instrument needs to cool down before it can continue loop testing FL Noise on the circuit under test may affect the reading Setup Procedure Reverse polarity or line neutral swapping This feature is only available on the following models LRCD200 EN SC LRCD200 FR SC LRCD200 DE SC LRCD200 NL SC LRCD200 ES SC LRCD210 EN SC LRCD210 FR SC LRCD210 DE SC LRCD210 NL SC LRCD210 ES SC LRCD220 EN SC LRCD220 FR SC LRCD220 DE SC LRCD220 NL SC LRCD220 ES SC The set up menu allows the user to change the way the instrument behaves when testing on a supply with Line and Neutral connections swapped Tests may be permitted or prohibited To select Polarity reversal acceptance or rejection 1 With the instrument switched OFF hold down the T
25. the instrument to the V range 2 Connect the GREEN or LO lead to the protective Earth PE and the RED or L1 lead to the phase to be measured 3 The instrument will display the phase to earth voltage Touch Voltage On all Megger LRCD200 series testers the touch voltage is calculated at the start of an RCD test to ensure it will remain below the safe 25 V or 50 V limit as required by the application On the LRCD200 series instruments the touch voltage limit can be switched from 50 V to 25 V as the application demands Should the touch voltage calculation identify a higher touch voltage than that permitted the LRCD tester will stop the test thus preventing the prescence of an unsafe voltage on the earth during the test should the test have taken place For those customers that require the touch voltage to be displayed this can be displayed by activating the analogue arc display as described in the instrument set up procedure Once activated the touch voltage will be displayed on an RCD test even if the voltage is below the permitted limits FREQUENCY Hz To measure the frequency of the electrical supply 1 Set the instrument to the Hz range 2 Connect the GREEN or LO lead to the protective Earth PE and the RED or L1 lead to the phase to be measured 3 The instrument will display the frequency in Hz 17 PHASE SEQUENCE LRCD 220 ONLY When connected to all conductors of a three phase system the
26. trip in the appropriate time Check your test lead connections to the RCD and repeat the test If the RCD still fails to trip suspect a faulty RCD 15 NOTE The current limit for the 5I test is 100 mA as the test current available is limited to 1 Amp 0 or 180 testing Both the 1 x I and 5 x I tests should be performed for 0 and 180 Repeat the 1 x Land 5 x I tests as above but with the instrument set to 180 0 or 180 is selected by pressing the 0 180 and the greatest trip time for each test should be recorded RamptTest a LRCD220 only The RCD trip current is measured by applying a test current of half the rated trip current and increasing this every 200 ms When the RCD trips the current flowing is recorded and displayed in mA 1 Select the appropriate RCD rated current on the top range knob 2 Select the RAMP test on the lower range knob 3 Press the TEST test button 4 The RCD should trip and the trip current will be is displayed 5 If the RCD fails to trip gt mA is displayed where mA indicates the maximum RCD tripping current allowed and will vary depending on range selected DC Sensitive RCD test RCD D C sensitive RCDs are tested as per standard RCDs The RMS current used is V2 x the rated operating current of the RCD As with the normal RCDs these should be tested at 0 and 180 or in the case Of DC sensitive RCDs positive and negative 16 Possible sources of er
27. ts such as overhead cables To maintain user safety and ensure accurate measurements only use the test leads supplied or by Megger Limited LOOP TESTING System Diagram Where To Use Each Test LRCD220 er LRCD220 High current No trip Phase Phase Loop test Loop test Loop test 2 wire 3 wire or mains 2 wire plug lead set incoming Supply RCD TESTING System Diagram Where To Use Each Test RCD testing at the RCD testing at the Wall outlet distribution board Mains plug 2 Wire test lead test lead Incoming Supply LED indicators Three RED led indicators show circuit connection status when correctly connected to a live circuit These are for indication purposes only and should not be relied upon as a indication of the presence of a hazardous voltage When connected to the circuit to be tested the three status LED s will show the following supply connection information LED Normal Reversed Notes Indicator Supply L N supply Oo Q orr Voltage between L PE L PE L N N PE O greater than 25 V O Voltage between L N greater than 25 V O Voltage between N PE greater than 25 V Warning Voltage indicator LED s cannot reveal a N PE supply reversal Polarity Indication If connected to a single phase power supply by a plug or by the 3 wire lead set three LED s marked L PE N PE and L N
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