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TESTBOY TV 450

Earth resistance

47

5.7 Earth resistance (model TESTBOY TV 450 (TYPE B))

Earth resistance is one of the most important parameters for protection against electric
shock. Main earthing arrangements, lightning systems, local earthings, etc can be
verified with the earthing resistance test. The measurement conforms to the EN 61557-
5 standard.

See chapter

4.1 Function selection

for instructions on

key functionality.

Figure 5.29: Earth resistance

Test parameters for earth resistance measurement

Limit

Maximum resistance

OFF, 1

Ω

÷ 5 k

Ω

Connections for earth resistance measurement

Figure 5.30: Resistance to earth, measurement of main installation earthing

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Содержание TV 450

Страница 1: ...TESTBOY TV 450 TESTBOY TV 450 Type B Instruction manual Version 1 5 Code no 20 751 769...

Страница 2: ...441 84536 www testboy de info testboy de Mark on your equipment certifies that this equipment meets the requirements of the EU European Union concerning safety and electromagnetic compatibility regula...

Страница 3: ...TESTBOY TV 450 20 3 5 2 Standard set TESTBOY TV 450 TYPE B 20 3 5 3 Optional accessories 20 4 Instrument operation 21 4 1 Function selection 21 4 2 Settings 22 4 2 1 Language 22 4 2 2 Initial setting...

Страница 4: ...Maintenance 60 8 1 Fuse replacement 60 8 2 Cleaning 60 8 3 Periodic calibration 60 8 4 Service 60 9 Technical specifications 61 9 1 Insulation resistance 61 9 2 Continuity 62 9 2 1 Resistance R LOW 62...

Страница 5: ...V 450 Table of contents 5 B Appendix B Accessories for specific measurements 72 C Appendix F Country notes 73 C 1 List of country modifications 73 C 2 Modification issues 73 C 2 1 AT modification G ty...

Страница 6: ...ting Fault loop RCD trip lock impedance measurements Line impedance Phase sequence Additionally model TESTBOY TV 450 Type B includes Earthing resistance tests The graphic display with backlight offers...

Страница 7: ...ecautions in order to avoid risk of electric shock while dealing with hazardous voltages Do not use the instrument in supply systems with voltages higher than 550 V Service intervention or adjustment...

Страница 8: ...iately and ensure the cause of the fault is eliminated before proceeding with any activity Notes related to measurement functions General The indicator means that the selected measurement cannot be pe...

Страница 9: ...ferential current is lower than the set contact voltage limit The autotest sequence RCD AUTO function stops when trip out time is out of allowable time period Z LOOP The low limit prospective short ci...

Страница 10: ...ognizes the connected power supply adapter and begins charging Symbols Indication of battery charging Figure 2 3 Charging indication When connected to an installation the instruments battery compartme...

Страница 11: ...batteries to their normal capacity Notes The charger in the instrument is a pack cell charger This means that the battery cells are connected in series during the charging The battery cells have to b...

Страница 12: ...ring of protective measures Part 1 General requirements Part 2 Insulation resistance Part 3 Loop resistance Part 4 Resistance of earth connection and equipotential bonding Part 5 Resistance to earth T...

Страница 13: ...rode 3 UP 4 DOWN Modifies selected parameter 5 MEM Store recall clear tests in memory of instrument 5 CAL Calibrates test leads in Continuity functions 6 Function selectors Selects test function 7 Bac...

Страница 14: ...l 14 Accesses help menus 9 HELP In RCD Auto toggles between top and bottom parts of results field 10 TAB Selects the parameters in selected function 11 PASS Green indicator 12 FAIL Red indicator Indic...

Страница 15: ...er 3 Charger socket 4 USB connector Communication with PC USB 1 1 port 5 PS 2 connector Communication with PC serial port and connection to optional measuring adapters 5 PS 2 connector Serial port for...

Страница 16: ...screw for battery compartment cover 4 Back panel information label 5 Holder for inclined position of the instrument 6 Magnet for fixing instrument close to tested item optional Figure 3 4 Battery comp...

Страница 17: ...d for selected measurement L and PE are active test terminals N terminal should also be connected for correct input voltage condition 3 4 2 Battery indication The indication indicates the charge condi...

Страница 18: ...ntinuity measurement is compensated High resistance to earth of test probes Results may be impaired model TESTBOY TV 450 TYPE B 3 4 4 Result field Measurement result is inside pre set limits PASS Meas...

Страница 19: ...les backlight intensity level Keep pressed for 1 s Locks high intensity backlight level until power is turned off or the key is pressed again Keep pressed for 2 s Bargraph for LCD contrast adjustment...

Страница 20: ...llations handbook Set of carrying straps 3 5 2 Standard set TESTBOY TV 450 TYPE B Instrument Short instruction manual Calibration Certificate Mains measuring cable Test lead 3 x 1 5 m Test probe 3 pcs...

Страница 21: ...urement function TAB Selects the test parameter to be set or modified TEST Runs selected test measurement function MEM Stores measured results recalls stored results model TESTBOY TV 450 TYPE B Keys i...

Страница 22: ...options in model TESTBOY TV 450 TYPE B are Recalling and clearing stored results Setting the date and time Figure 4 1 Options in Settings menu Keys UP DOWN Selects appropriate option TEST Enters selec...

Страница 23: ...e settings will be lost The default setup is listed below model TESTBOY TV 450 TYPE B Instrument setting Default value Contrast As defined and stored by adjustment procedure Isc factor 1 00 RCD standa...

Страница 24: ...gure 4 4 Memory options Keys UP DOWN Selects option TEST Enters selected option Function selectors Exits back to main function menu 4 2 4 Date and time model TESTBOY TV 450 TYPE B In this menu date an...

Страница 25: ...t times according to EN 60364 4 41 I N I N 2 I N 5 I N General RCDs non delayed t 999 ms t 999 ms t 150 ms t 40 ms Selective RCDs time delayed t 999 ms 130 ms t 999 ms 60 ms t 200 ms 50 ms t 150 ms Tr...

Страница 26: ...V 1000 ms 1000 ms 200 ms 150 ms 4 2 6 Isc factor In this menu the Isc factor for calculation of short circuit current in Z LINE and Z LOOP measurements can be set Figure 4 7 Selection of Isc factor Ke...

Страница 27: ...er option TEST Confirms selected option Function selectors Exits back to main function menu Note This option is intended to disable the commander s remote keys In the case of high EM interfering noise...

Страница 28: ...orms to the EN 61557 7 standard See chapter 4 1 Function selection for instructions on key functionality Figure 5 1 Voltage in single phase system Test parameters for voltage measurement There are no...

Страница 29: ...y after selection of VOLTAGE TRMS function Figure 5 4 Examples of voltage measurement in three phase system Displayed results for single phase system Uln Voltage between phase and neutral conductors U...

Страница 30: ...oms walls and floors Insulation resistance of ground cables Resistance of semi conductive antistatic floors See chapter 4 1 Function selection for instructions on key functionality Figure 5 5 Insulati...

Страница 31: ...rge insulation as required Connect test cable to the instrument and to the item to be tested see figure 5 6 Press the TEST key to perform the measurement double click for continuous measurement and la...

Страница 32: ...fective Two sub functions are available R LOW Earth bond resistance measurement according to EN 61557 4 200 mA CONTINUITY Continuous resistance measurement performed with 7 mA model TESTBOY TV 450 TYP...

Страница 33: ...function using the function selector switch Set sub function to R LOW Enable and set limit optional Connect test cable to the the instrument Compensate the test leads resistance if necessary see sect...

Страница 34: ...rocedure Select continuity function using the function selector switch Set sub function CONTINUITY Enable and set the limit optional Connect test cable to the instrument Compensate test leads resistan...

Страница 35: ...displayed if the compensation was carried out successfully Circuits for compensating the resistance of test leads N L2 L L1 L L1 PE L3 N L2 PE L3 prolongation lead Figure 5 13 Shorted test leads Comp...

Страница 36: ...us starting polarity MUL Multiplication factor for test current 1 2 5 I N Ulim Conventional touch voltage limit 25 V 50 V Model TESTBOY TV 450 TYPE B Notes Ulim can be selected in the Uc sub function...

Страница 37: ...ith a test current lower than I N to avoid trip out of the RCD and then normalized to the rated I N Contact voltage measurement procedure model TESTBOY TV 450 TYPE B Select the RCD function using the...

Страница 38: ...N C L I U R UK version Figure 5 18 Example of contact voltage measurement results Displayed results Uc Contact voltage Rl Fault loop resistance 5 4 2 Trip out time RCDt Trip out time measurement veri...

Страница 39: ...2 I N 1 5 I N A I N 10 mA 0 2 I N 2 2 I N Pulsed Both models B 0 2 I N 2 2 I N DC Model TESTBOY TV 450 TYPE B only Maximum test current is I trip out current or end value in case the RCD didn t trip...

Страница 40: ...e function selector switch Set sub function AUTO Set test parameters if necessary Connect test cable to the instrument Connect test leads to the to the item to be tested see figure 5 17 Press the TEST...

Страница 41: ...Y TV 450 Testing RCD 41 Result examples Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Figure 5 21 Individual steps in RCD autotest Top Bottom Figure 5 22 Two parts of result field in RCD aut...

Страница 42: ...rent 180 Uc Contact voltage for rated I N Notes The autotest sequence is immediately stopped if any incorrect condition is detected e g excessive Uc or trip out time out of bounds Auto test is finishe...

Страница 43: ...ion selection for instructions on key functionality Figure 5 23 Fault loop impedance Test parameters for fault loop impedance measurement Test Selection of fault loop impedance sub function Zloop Zs r...

Страница 44: ...ow limit prospective short circuit current value or high limit fault loop impedance value for the UK version Prospective fault current ISC is calculated from measured impedance as follows Z k Un I SC...

Страница 45: ...e of selected fuse Lim Minimum short circuit current for selected fuse See Appendix A for reference fuse data Connections for measurement of line impedance L1 L2 L3 N PE RE Ro L PE N L L1 N L2 PE L3 N...

Страница 46: ...Prospective short circuit current is calculated as follows Z k Un I SC SC where Un Nominal L N or L1 L2 voltage see table below ksc Correction factor for Isc see chapter 4 2 6 Un Input voltage range...

Страница 47: ...ocal earthings etc can be verified with the earthing resistance test The measurement conforms to the EN 61557 5 standard See chapter 4 1 Function selection for instructions on key functionality Figure...

Страница 48: ...sult by pressing the MEM key optional Figure 5 32 Example of earth resistance measurement result Displayed results for earth resistance measurement R Earth resistance Rp Resistance of S potential prob...

Страница 49: ...see examples below When touching the TEST key in all functions that require mains supply the user automatically performs this test Examples for application of PE test terminal L1 N PE Reversed phase a...

Страница 50: ...ed to phase voltage the warning message is displayed instrument buzzer is activated and further measurements are disabled in Z LOOP and RCD functions Warning If dangerous voltage is detected on the te...

Страница 51: ...ot limited The data structure field describes the location of the measurement which object block fuse and where can be accessed In the measurement field there is information about type and number of m...

Страница 52: ...ult location name block and its successive number 3rd level FUSE Default location name fuse and its successive number 001 No of selected element No of measurements in selected location No of measureme...

Страница 53: ...results Keys in save test menu data structure field TAB Selects the location element Object Block Fuse UP DOWN Selects number of selected location element 1 to 199 MEM Saves test results to the select...

Страница 54: ...ts field UP DOWN Selects the location element in selected level Function selectors TEST Exits back to main function menu MEM Enters measurements field Keys in recall memory menu measurements field UP...

Страница 55: ...s Figure 6 7 Clearing memory in progress 6 5 2 Clearing measurement s in selected location Select DELETE RESULTS in MEMORY menu Figure 6 8 Clear measurements menu data structure field selected Keys in...

Страница 56: ...lected TAB Selects the location element Object D Board Circuit or Bonding or Electrode UP DOWN Selects the location element in selected level Function selector TEST Exits back to main function menu ME...

Страница 57: ...structure elements are Object D Board Circuit Electrode and Circuit In the PC SW package TESTBOY TV 450 default names can be changed with customized names that corresponds the installation under test...

Страница 58: ...a PC COM port to the instrument PS 2 connector using the PS 2 RS232 serial communication cable USB communication selected connect a PC USB port to the instrument USB connector using the USB interface...

Страница 59: ...rom a PC via the RS232 communication port This enables to keep the instrument up to date even if the standards or regulations change The upgrade can be carried with help of a special upgrading softwar...

Страница 60: ...y otherwise the instrument may be damaged and or operator s safety impaired Position of fuse can be seen in Figure 3 4 in chapter 3 3 Back panel 8 2 Cleaning No special maintenance is required for the...

Страница 61: ...range V Resolution V Accuracy 0 1200 1 3 of reading 3 digits Nominal voltages 50 VDC 100 VDC 250 VDC 500 VDC 1000 VDC Open circuit voltage 0 20 of nominal voltage Measuring current min 1 mA at RN UN 1...

Страница 62: ...ESTBOY TV 450 TYPE B Measuring range Resolution Accuracy 0 0 19 9 0 1 20 1999 1 5 of reading 3 digits Open circuit voltage 6 5 VDC 9 VDC Short circuit current max 8 5 mA Test lead compensation up to 5...

Страница 63: ...f mains voltage is stabile during the measurement and PE terminal is free of interfering voltages Test current max 0 5 I N Limit contact voltage 25 V 50 V Specified accuracy is valid for complete oper...

Страница 64: ...ecified accuracy is valid for complete operating range 9 4 Fault loop impedance and prospective fault current 9 4 1 No disconnecting device or FUSE selected Fault loop impedance Measuring range accord...

Страница 65: ...cy of fault loop resistance measurement Nominal voltage range 30 V 500 V 45 Hz 65 Hz No trip out of RCD R XL values are indicative 9 5 Line impedance and prospective short circuit current Line impedan...

Страница 66: ...age 15 VAC Short circuit voltage 30 mA Test voltage frequency 125 Hz Test voltage shape rectangular Noise voltage indication threshold 1 V 50 worst case Automatic measurement of auxiliary electrode re...

Страница 67: ...tection degree IP 40 Display 128x64 dots matrix display with backlight Dimensions w h d 14 cm 8 cm 23 cm Weight 1 0 kg without battery cells Reference conditions Reference temperature range 10 C 30 C...

Страница 68: ...5 2970 8 2529 9 1354 5 250 6032 4 4399 6 3615 3 2918 2 1590 6 315 7766 8 6066 6 4985 1 4096 4 2272 9 400 10577 7 7929 1 6632 9 5450 5 2766 1 500 13619 10933 5 8825 4 7515 7 3952 7 630 19619 3 14037 4...

Страница 69: ...50 250 250 250 63 315 315 315 315 315 Fuse type C Disconnection time s 35m 0 1 0 2 0 4 5 Rated current A Min prospective short circuit current A 0 5 5 5 5 5 2 7 1 10 10 10 10 5 4 1 6 16 16 16 16 8 6 2...

Страница 70: ...2 16 320 320 320 320 86 4 20 400 400 400 400 108 25 500 500 500 500 135 32 640 640 640 640 172 8 A 2 Fuse table impedances UK Fuse type B Fuse type C Disconnection time s Disconnection time s 0 4 5 0...

Страница 71: ...80 0 112 0 112 100 0 088 0 088 125 0 072 0 072 Fuse type BS 88 Fuse type BS 1362 Disconnection time s Disconnection time s 0 4 5 0 4 5 Rated current A Max loop impedance Rated current A Max loop imped...

Страница 72: ...TESTBOY TV 450 TYPE B Test lead 3 x 1 5 m Tip commander A 1270 Test lead 4 m A 1012 Line impedance Test lead 3 x 1 5 m Plug commander A 1272 Mains measuring cable Tip commander A 1270 Three phase adap...

Страница 73: ...e mentioned in the chapter is converted to unmarked type Added G type RCD Time limits are the same as for general type RCD Contact voltage is calculated the same as for general type RCD Modifications...

Страница 74: ...of 30 s is inserted before performing trip out test to recover S type RCD after pretests and time delay of 5 s is inserted for the same purpose for G type RCD Modification of the chapter 5 4 1 RCD typ...

Страница 75: ...TESTBOY TV 450 Appendix C 75...

Страница 76: ...TESTBOY TV 450 Appendix C 76...

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