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COMBITEST422

EN - 75

6.8. LOZ: LINE/LOOP IMPEDANCE WITH HIGH RESOLUTION

This Line/loop impedance measurements with high resolution (0.1m



) is performed by

using the optional accessory

IMP57

connected to the Master unit through the optical

cable/RS-232 C2001 supplied with same accessory. The IMP57 must be directly powered
by the mains on which measurements are performed. For detailed information, please
refer to the user manual of the accessory IMP57.
Please find below the procedure for the measurement of

STD L-L impedance in TN

systems

. The same procedures can be applied to any other case considering what is

reported in previous § 6.7.

1. Press the

MENU

key, move the cursor to

LoZ

in the main

menu by means of the arrow keys (



,



) and confirm

with

ENTER

. Subsequently the instrument displays a

screen similar to the one reported here to the side.
The “

IMP57 not detected

” message indicates that the

IMP57 accessory is not connected to the instrument or
not powered directly by the mains

L o Z

15/10

– 18:04

TN

Ipsc
ZL-L

=
=

- - -
- - -

A
m



R = - - - m



X = - - - m



FREQ. = - - -Hz
VL-L= - - -V

IMP57 not detected

L-L

STD

FUNC

MODE

2. Connect the IMP57 to the instrument via the cable C2001

and to the powered system via the input terminals

C1

,

C2

and

P1

,

P2

placed on it (see the IMP57 user manual).

The following screen appears on the display

L o Z

15/10

– 18:04

TN

Ipsc
ZL-L

=
=

- - -
- - -

A
m



R = - - - m



X = - - - m



FREQ. = 50.0Hz
VL-L= 384V

L-L

STD

FUNC

MODE

3. Press the

GO/STOP

key on the instrument to start the

test.  The  following  screen  is  shown  on  the  display  (in
case of L-L measurement in STD mode).
The  standard  (STD)  prospective  short-circuit  current  is
shown on the display.The L-L Loop impedance values, in
addition  to  its  resistive  and  reactive  components,  are
shown in the central part of the display, expressed in

m



L o Z

15/10

– 18:04

TN

Ipsc
ZL-L

=
=

15.3
15.0

kA
m



R = 13.2 m



X = 7.5 m



FREQ. = 50.0Hz
VL-L= 384V

L-L

STD

FUNC

MODE

4. Press the

SAVE

key to store the test result in the instrument’s memory (see § 7.1) or

the

ESC/MENU

key to exit the screen without saving and go back to the main

measuring screen

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Содержание COMBITEST422

Страница 1: ... Copyright HT ITALIA 2021 Release EN 1 01 06 09 2021 COMBITEST422 User manual ...

Страница 2: ... 3 RPE Continuity of protective conductors 23 6 3 1 TMR mode 25 6 3 2 mode 26 6 3 3 Anomalous situations 27 6 4 Lo Continuity of protective conductors with 10A 28 6 4 1 Anomalous situations 29 6 5 M Measurement of insulation resistance 30 6 5 1 TMR mode 34 6 5 2 AUTO mode 35 6 5 3 Anomalous situations 36 6 6 RCD Test on differential switches 39 6 6 1 AUTO mode 42 6 6 2 AUTO mode 43 6 6 3 x x1 x5 m...

Страница 3: ... guidelines 92 10 3 General characteristics 93 10 4 Environment 93 10 4 1 Environmental conditions for use 93 10 5 Accessories 93 11 SERVICE 94 11 1 Warranty conditions 94 11 2 Service 94 12 THEORETICAL APPENDIXES 95 12 1 Continuity of protective conductors 95 12 2 Insulation resistance 95 12 2 1 Measurement of polarization index PI 96 12 2 2 Dielectric Absorption Ratio DAR 97 12 3 Checking circui...

Страница 4: ... in this manual CAUTION observe the instructions given in this manual improper use could damage the instrument its components or create dangerous situations for the operator High voltage danger electrical shock hazard Double insulation AC voltage or current DC voltage or current Connection to earth The symbol indicates that the instrument must not be connected to systems with phase to phase rated ...

Страница 5: ...7 4 Measured circuits reads circuits are divided into the following measurement categories Measurement category IV is for measurements performed at the source of a low voltage installation Examples are electricity meters and measurements on primary overcurrent protection devices and ripple control units Measurement category III is for measurements performed on installations inside buildings Exampl...

Страница 6: ...voltage drop on mains Lo Continuity test of earth protective and equipotential conductors with test current higher than 10A by means of optional accessory EQUITEST RCD Test on molded case standard General and Selective RCDs of type A and AC and B of the following parameters tripping time tripping current contact voltage AUTO Automatic sequence measurements of RA RCD M functions with 3 wire connect...

Страница 7: ...pancy please contact the Dealer In case the instrument should be returned please follow the instructions given in 11 3 2 INSTRUMENT POWER SUPPLY The instrument is powered by 6x1 5V alkaline batteries of type AA LR06 supplied with the instrument The symbol indicates the charge level of the batteries To replace the batteries refer to 9 2 The instrument is capable of keeping data stored even without ...

Страница 8: ...the upper part of the instrument CAUTION The instrument checks voltage on PE by comparing the voltage at B4 input to the ground potential induced on the instrument s side through the user s hand Therefore in order to check voltage on PE it is mandatory to hold the instrument case on the left or on the right side 4 2 DESCRIPTION OF MEASURING LEADS CAPTION 1 Hand protection 2 Safe area Fig 3 Descrip...

Страница 9: ...on key continuos pressure to adjust the display backlight 4 4 DISPLAY DESCRIPTION The display is a COG LCD module 128x128 points The first line of the display indicates the type of active measurement the date time and the battery charge indication R P E 115 10 18 04 R I te st mA Measuring STD 2 00 0 12 MODE Lim 4 5 INITIAL SCREEN When switching on the instrument the initial screen appears for a fe...

Страница 10: ... the desired measurement on the display 5 1 SET INSTRUMENT SETTINGS Move the cursor to SET by means of the arrow keys and confirm with ENTER Subsequently the displays shows the screen which allows accessing the various instrument settings The settings will remain valid also after switching off the instrument S E T 15 10 18 04 L a n g u a g e C o u n t r y E l e c t r i c a l s y s t e m G e n e r ...

Страница 11: ...or RCD type A with Idn 30mA the actual value of normalized trip out current can be up to 30mA With the Real option the instrument shows the actual value of trip out current by considering the coefficients indicated by guidelines IEC EN61008 and IEC EN61009 1 414 for RCD type A 1 for RCD type AC 2 for RCD type B Example for RCD type A with Idn 30mA the actual value of trip out current can be up to ...

Страница 12: ...ady input voltage within the allowed range it runs the test automatically with no need to press the GO STOP key on the instrument or the START key on the remote switch probe 5 1 6 Date and time Move the cursor to Date and time by means of the arrow keys and confirm with ENTER Subsequently the display shows the screen which allows setting the system date time Select Format to set the European syste...

Страница 13: ...ce with the technical specifications of the instrument and the RCD tables see 10 1 empty cells of RCD tables mean unavailable situations CAUTION Testing the RCD s tripping time causes the RCD s tripping Therefore check that there are NO users or loads connected downstream of the RCD being tested which could be damaged by a system downtime Disconnect all loads connected downstream of the RCD as the...

Страница 14: ... 250V 500V 1000V Lim This key allows the selection of the minimum limit threshold in order to consider the insulation measurement correct The following values are available 0 05M 0 10M 0 23M 0 25M 0 50M 1 00M 100M CAUTION Make sure to select the correct value when setting the RCD s test current If setting a current higher than the nominal current of the device being tested the RCD would be tested ...

Страница 15: ...f a positive result of all the tests sequentially performed as Ra ZL N and ZL PE 199 the instrument goes on with the test on the trip out current and trip out time of the RCD A U T O 15 10 18 04 T N I s c 1 4 3 7 A Z L N 0 1 6 Ω I f c 1 2 7 7 A Z L P E 0 1 8 Ω T r c d m s I r c d m A F R E Q 5 0 0 0 H z U t V V L P E 2 3 1 V V L N 2 3 2 V M e a s u r i n g 30mA 500V 1 00M I n Type Vtest Lim 7 The ...

Страница 16: ... d m s I r c d m A F R E Q 5 0 0 0 H z U t V V L P E 2 3 1 V V L N 2 3 2 V N O T O K 30mA 500V 1 00M I n Type Vtest Lim 10 In case of a negative result of the RCD test Trcd 300ms or Ircd 33 0mA the auto test is automatically blocked the message NOT OK is shown and the screen to the side is displayed A U T O 15 10 18 04 T N I s c 1 4 3 7 A Z L N 0 1 6 Ω I f c 1 2 7 7 A Z L P E 0 1 8 Ω T r c d 3 0 0...

Страница 17: ...e 0 05M 0 10M 0 23M 0 25M 0 50M 1 00M 100M CAUTION Make sure to select the correct value when setting the RCD s test current If setting a current higher than the nominal current of the device being tested the RCD would be tested at a current higher than the correct one thus facilitating a faster tripping of the switch The symbol indicates that the test cables or the plug cablehas already been cali...

Страница 18: ...nt and the trip out time values appear on the display In case of a positive result of all the tests sequentially performed during RCD test Trcd and Ircd parameters see 12 4 the instrument goes on with the test on insulation resistance between L N L PE and N PE conductors A U T O 15 10 18 04 T T R A 4 8 8 U t 1 5 V T r c d 2 5 m s I r c d 2 7 0 m A F R E Q 5 0 0 0 H z V L P E 2 3 1 V V L N 2 3 2 V ...

Страница 19: ...8 04 T T R A 4 8 8 U t 1 5 V T r c d 3 0 0 m s I r c d 3 3 0 m A F R E Q 5 0 0 0 H z V L P E 2 3 1 V V L N 2 3 2 V N O T O K 30mA 500V 1 00M I n Type Vtest Lim 11 In case of a negative result of the Insulation test insulation resistance minimum limit threshold the auto test is automatically blocked the message NOT OK is shown and the screen to the side is displayed A U T O 15 10 18 04 T T R L N 9 ...

Страница 20: ... L N Ω I f c A Z L P E Ω T r c d m s I r c d m A F R E Q 5 0 0 0 H z U t V V L P E 1 5 V V L N 1 5 V V o l t a g e 1 0 0 V 30mA 500V 1 00M I n Type Vtest Lim 3 If the instrument detects that the phase and neutral leads are inverted it does not carry out the test and a screen similar to the one reported to the side is displayed Rotate the mains plug or check the connection of the measuring cables A...

Страница 21: ... and confirm with ENTER Subsequently the instrument displays a screen similar to the one reported here to the side D M M 15 10 18 04 FREQ 0 00 Hz VL N 0 V VL PE 0 V VN PE 0 V 2 Insert the green blue and black connectors of the three pin plug cable into the corresponding inputs B1 B3 and B4 of the instrument As an alternative use the single cables and apply the relevant alligator clips to the free ...

Страница 22: ...requency of L N voltage are shown on the display Press the GO STOP key to enable disable the HOLD function in order to fix the value on the display D M M 15 10 18 04 FREQ 50 00 Hz VL N 230 V VL PE 230 V VN PE 2 V HOLD CAUTION These data cannot be saved in the instrument s internal memory ...

Страница 23: ...a sufficiently long time to be able to move the tip on the conductors being examined while the instrument performs the test For the whole duration of measurement the instrument emits a short acoustic signal every 3 seconds The user shall touch the metal part under test while the instrument beeps If during measurement a result takes a value higher than the set limit the instrument emits a continuou...

Страница 24: ... 99 in steps of 0 01 Time TMR mode this virtual key allows you to set the duration of the measurement in the range 3s 99s in steps of 3s 3 Insert the blue and black connectors of the single cables into the corresponding inputs B4 and B1 of the instrument Apply the relevant alligator clips to the free ends of the cables It is also possible to use the remote switch probe by inserting its multipolar ...

Страница 25: ... lower than the set limit threshold or NOT OK in case of a negative result value higher than the set limit threshold R P E 15 10 18 04 R I t e s t 0 2 2 2 1 2 m A O K STD 2 00 0 21 MODE Lim 6 3 1 TMR mode 1 With the arrow keys select the TMR option in the Mode section The instrument displays a screen like the one shown to the side Set the measurement duration in the Time section and follow the ste...

Страница 26: ...s indicated in Fig 10 3 Press the GO STOP key on the instrument or the START key on the remote switch probe The instrument starts the calibration procedure of the cables immediately followed by the verification of the compensated value CAUTION If message Measuring appears on the display the instrument is performing measurement If message Verify appears on the display the instrument is verifying th...

Страница 27: ...trument detects a calibration reset performing the operation with open terminals the instrument gives out a long sound and displays a screen like the one to the side R P E 15 10 18 04 R I t e s t m A Z e r o R e s e t STD 2 00 MODE Lim 4 When using the mode in case the instrument detects a resistance higher than 5 at its terminals it emits a prolonged acoustic signal resets the compensated value a...

Страница 28: ... by transient currents Continuity test is carried out by supplying a current higher than 10A in case the resistance does not exceed ca 0 7 including resistance of the test cables The 4 wire method allows extending the test leads without any preliminary calibration 1 Press the MENU key move the cursor to Lo in the main menu by means of the arrow keys and confirm with ENTER Subsequently the instrume...

Страница 29: ...rument will start the measurement At the end of measurement the instrument shows on the display the message OK in case of a positive result value lower than the set limit threshold or NOT OK in case of a negative result value higher than the set limit threshold L o 15 10 18 04 R I t e s t 0 3 2 8 1 4 7 6 A OK 0 500 Conn Lim INFO 7 Press the SAVE key to store the test result in the instrument s mem...

Страница 30: ... s t A A c c e s s o r y n o t d e t e c t e d 0 500 Conn Lim INFO 3 The instrument shows on the display the message NOT OK in case of a positive result value lower than the set limit threshold but with test current lower than 10A as indicated in the screen like the one to the side L o 15 10 18 04 R I t e s t 0 1 1 9 8 0 5 A NOT OK 0 500 Conn Lim INFO 6 5 M MEASUREMENT OF INSULATION RESISTANCE Thi...

Страница 31: ...nge 3s 999s in steps of 1s by pressing the GO STOP key on the instrument or START of the remote switch probe It is possible to perform DAR Dielectric Absorbtion Ratio duration test for test time 60s and PI Polarization Index for test time 600s 10min see 12 2 1 and 12 2 2 AUTO the instrument performs an automatic sequence test between the L N L PE and N PE conductors when the GO STOP key is pressed...

Страница 32: ...ST422 EN 32 Fig 13 Insulation between L N PE by means of mains plug MAN and AUTO Fig 14 Insulation between L PE by means of mains plug TMR mode Fig 15 Insulation between L PE by means of single cables TMR mode ...

Страница 33: ...n order to consider the measurement correct The following values are available 0 05M 0 10M 0 23M 0 25M 0 50M 1 00M 100M FUNC This key allows setting the connection type L N L PE or N PE in MAN mode Temp Only in TMR mode this virtual key allows setting the duration time of test in the range 3s 999s 3 We suggest setting the value of the voltage supplied while measuring and the minimum limit to consi...

Страница 34: ... due to the stray capacitances of the system 7 Regardless of the operating mode selected the instrument at the end of each test applies a resistance to the output leads to discharge the stray capacitances in the circuit 8 At the end of measurement fixed duration of 3s the instrument shows on the display the message OK in case of a positive result value higher than the set minimum limit threshold o...

Страница 35: ...K in case of a negative result value lower than the minimum limit set M 15 10 18 04 R 1 0 2 M Vt 523V T 10 s PI DAR OK TMR 500V 1 00M 10s MODE Vtest Lim Time 3 With a measurement duration 60s the instrument shows the indication of the DAR parameter Dielectric Absorbtion Ratio as shown in the screen to the side M 15 10 18 04 R 1 0 2 M Vt 523V T 60 s PI DAR 1 03 OK TMR 500V 1 00M 60s MODE Vtest Lim ...

Страница 36: ... on the instrument or the START key on the remote switch probe The instrument starts the automatic sequential measurement of the insulation resistance between L N L PE and N PE respectively by showing the Measuring message The instrument shows the message OK on the display in case of a positive result of each test value higher than the set minimum limit threshold or NOT OK in case of a negative re...

Страница 37: ...Lim FUNC 3 In AUTO mode if the insulation measurement L N is 50k 0 05M all the tests are completed or if the STOP key has been pressed if RL PE and RN PE Lim and Vt Vnom the instrument shows a screen like the one at the side Disconnect the loads and resume the test M 15 10 18 04 RL N 0 01M Vt 15 V RL PE 999 M Vt 525 V RN PE 999 M Vt 524 V Not OK Check loads AUTO 500V 1 00M MODE Vtest Lim 4 At the ...

Страница 38: ...COMBITEST422 EN 38 terminals it does not perform the test emits a prolonged acoustic signal and displays a screen like the one at the side R V t T M V s Vin 10V MAN 500V 1 00M L PE MODE Vtest Lim FUNC ...

Страница 39: ...matically with a leakage current equal to half once or five times the set value of nominal current and with a leakage current in phase with the positive and negative half wave of the mains voltage and also real tripping current x the instrument performs tripping time measurement with a leakage current equal to half the set value of nominal current with the positive and negative half wave of the ma...

Страница 40: ...r single phase 230V system by means of mains plug Fig 18 Connection for single phase 230V system with single cables and remote switch probe Fig 19 Connection for 400V N PE three phase system by means of single cables and remote switch probe ...

Страница 41: ...neral settings of the instrument see 5 1 3 R C D 15 10 18 04 TT T Ut ms V FREQ 0 00Hz VL PE 0V VL N 0V X1 30mA MODE I n Type Ut 2 Use the keys to select the parameter to be modified and the keys to modify the parameter value MODE The virtual key allows setting the measuring mode of the instrument which may be AUTO x x1 x5 I n The virtual key allows setting the nominal value of the RCD s tripping c...

Страница 42: ...art the measurement R C D 15 10 18 04 T T 0 1 8 0 X 1 3 8 m s m s X 5 m s m s X m s m s F R E Q 5 0 0 0 H z U t V V L N 2 3 2 V V L P E 2 3 1 V M e a s u r i n g AUTO 30mA MODE I n Type Ut CAUTION If message Measuring appears on the display the instrument is performing measurement During this whole stage do not disconnect the test leads of the instrument from the mains 6 The AUTO mode provides for...

Страница 43: ... 2 3 2 V M e a s u r i n g AUTO 30mA MODE I n Type Ut CAUTION If message Measuring appears on the display the instrument is performing measurement During this whole stage do not disconnect the test leads of the instrument from the mains 6 The AUTO mode provides for the automatic execution of 8 measurements in a sequence Ramp with phase 0 the RCD must trip reset the switch message Resume RCD is sho...

Страница 44: ... key on the remote switch probe or use the AutoStart feature see 5 1 5 The instrument will start the measurement R C D 15 10 18 04 TT T Ut ms V FREQ 0 00Hz VL PE 0V VL N 0V Measuring X1 30mA MODE I n Type Ut CAUTION If message Measuring appears on the display the instrument is performing measurement During this whole stage do not disconnect the test leads of the instrument from the mains 6 When th...

Страница 45: ... this whole stage do not disconnect the test leads of the instrument from the mains 6 According to standard EN61008 the test for selective RCDs requires an interval of 60 seconds between the tests The mode is therefore unavailable for selective RCDs both of A and of AC type 7 When the RCD trips and breaks the circuit if the tripping current and tripping time are within the limits reported in 12 4 ...

Страница 46: ...d R C D 15 10 18 04 TT T Ut ms V FREQ 0 00 Hz VLPE 100V VL N 100V Voltage 100V X1 30mA MODE I n Type Ut 3 If the instrument detects a L N or L PE voltage higher than the maximum limit 265V it does not carry out the test and displays a screen like the one to the side Check the connection of measuring cables R C D 15 10 18 04 TT T Ut ms V FREQ 50 00 Hz VLPE 265V VL N 265V Voltage 265V X1 30mA MODE I...

Страница 47: ...e side is displayed Check the connection of measuring cables R C D 15 10 18 04 TT T Ut ms V FREQ 50 00Hz VL PE 231V VL N 1V Exchange L PE X1 30mA MODE I n Type Ut 7 If the instrument detects the absence of the signal to terminal B3 PE conductor it provides the warning screen shown to the side and blocks the execution of the tests R C D 15 10 18 04 TT T Ut ms V FREQ 50 00 Hz VL PE 114V VL N 231V Mi...

Страница 48: ...s not trip within the maximum duration of the test the instrument gives a long acoustic signal which signals the negative result of the test and then displays a screen similar to the one reported here to the side Check that the set type of RCD matches the type of RCD being tested R C D 15 10 18 04 TT T Ut 999 1 ms V FREQ 50 00 Hz VL PE 231V VL N 232V NOT OK X1 30mA MODE I n Type Ut 12 If the instr...

Страница 49: ...e short circuit current L PE Standard STD measurement of the fault loop impedance between the phase conductor and the earth conductor and calculation of the prospective phase to earth short circuit current Ra Fault loop impedance without causing the protections tripping in TN systems see 12 7 and overall earth resistance TT systems with neutral 3 wire and without neutral 2 wire see 12 8 CAUTION Th...

Страница 50: ...ase systems with cables and remote probe Fig 24 P N P PE test for 400V N PE three phase with single cables and remote probe Fig 25 P P measurement for 400V N PE three phase systems Fig 26 P PE P N test for 400V PE systems by means of single cables and remote probe ...

Страница 51: ...ingle cables and remote probe Fig 28 P PE 2 wire test for single phase two phase 230V systems with mains plug Fig 29 P PE 2 wire test for single phase two phase systems with cables and remote probe Fig 30 P PE 2 wire test for three phase with single cables and remote probe ...

Страница 52: ...rforms the measurement and verifies the condition imposed by the guidelines Should it be reached the instrument gives a positive outcome see 12 6 12 8 12 9 Br Cap Check of protection s breaking capacity The instrument detects the value of the line impedance upstream of the measured point calculates the maximum value of short circuit current and gives a positive outcome if the value is lower than t...

Страница 53: ...er Nations Table 1 Conditions of positive outcome depending on the test parameters Where Empty cells Mode unavailablefor this particular combination of electric system Isc L L_Min2P Prospective short circuit current minimum two phase Phase Phase Isc L N_Max Prospective short circuit current maximum Phase Neutral Isc L N_Min Prospective short circuit current minimum Phase Neutral Isc L PE_Max Prosp...

Страница 54: ...tallic accessory into the three banana connectors of the measurement cables L N PE or into the metal connectors of the mains plug differently for the various types depending on the country of use as shown in the following Table 2 Connection of ZEROLOOP accessory 3 Test leads SHUKO plug UK ains plug ITA plug SWI plug DEN plug AUS CHN plug USA plug Table 2 Connection of ZEROLOOP accessory 3 Press th...

Страница 55: ...performed by the user for example for the insertion of cables with different lengths To reset the saved calibration value remove the ZEROLOOP accessory and press the GO STOP key The symbol disappears and the screen to the side appears on the display L O O P 15 10 18 04 TN RL RN RPE FREQ 0 00Hz VL PE 0V VL N 0V Zero reset CAL FUNC ...

Страница 56: ...r L PE MODE the virtual key allows setting the instrument s operating mode Select the STD option 3 If possible disconnect all loads connected downstream of the point to be measured as the impedance of these users could distort the test results Perform the preliminary calibration of the test leads as described in 6 7 2 4 Insert the green blue and black connectors of the three pin plug cable into th...

Страница 57: ...value of the prospective short circuit current Ipfc is shown in the upper part of the display while the Line Fault loop ZL PE impedance is shown in the bottom part of the display The Standard Std prospective short circuit current Isc is calculated using the following formulas ZMEAS measured L L L N L PE loop impedance UNOM nominal voltage depending on the system PE L NOM PE SCL Z U I N L NOM N SCL...

Страница 58: ...pping current expressed in kA at which the protection must break the circuit in the range 0 1kA 999kA 3 If possible disconnect all loads connected downstream of the point to be measured as the impedance of these users could distort the test results Perform the preliminary calibration of the test leads as described in 6 7 2 4 Insert the green blue and black connectors of the three pin plug cable in...

Страница 59: ...223V VL L 387V Measuring L L Br Cap 15kA FUNC MODE Lim 7 In case of positive result IpscMAX Lim the OK outcome message is shown on the display L O O P 15 10 18 04 TN max psc I ZL L 3019 0 16 A FREQ 50 00Hz VL PE 223V VL L 387V OK L L Br Cap 6 0kA FUNC MODE Lim 8 In case of negative result IpscMAX Lim the NOT OK outcome message is shown on the display L O O P 15 10 18 04 TN max psc I ZL L 7236 0 07...

Страница 60: ...A 63A 80A 100A 125A 160A 200A MCB curve C 0 5A 1A 1 6A 2A 3A 4A 6A 10A 13A 15A 16A 20A 25A 32A 40A 50A 63A 80A 100A 125A 160A 200A MCB curve D K 0 5A 1A 1 6A 2A 3A 4A 6A 10A 13A 15A 16A 20A 25A 32A 40A 45A 50A 63A 80A 100A 125A 160A 200A Fuse gG 2A 4A 6A 8A 10A 12A 13A 16A 20A 25A 32A 35A 40A 50A 63A 80A 100A 125A 160A 200A 250A 315A 400A 500A 630A 800A 1000A 1250A Fuse aM 2A 4A 6A 10A 12A 16A 20A...

Страница 61: ...3V VL L 387V Measuring L L TripT 16A 0 2s FUNC MODE MCB C Time 7 In case of positive result minimum short circuit current interrupted by the protection device within the time indicated by the performed selections the OK message and the screen to the side are displayed by the instrument L O O P 15 10 18 04 TN min psc I ZL L 212 1 03 A FREQ 50 00Hz VL PE 223V VL L 387V OK L L TripT 16A 0 2s FUNC MOD...

Страница 62: ... 45A 50A 63A 80A 100A 125A 160A 200A MCB curve C 0 5A 1A 1 6A 2A 3A 4A 6A 10A 13A 15A 16A 20A 25A 32A 40A 50A 63A 80A 100A 125A 160A 200A MCB curve D K 0 5A 1A 1 6A 2A 3A 4A 6A 10A 13A 15A 16A 20A 25A 32A 40A 45A 50A 63A 80A 100A 125A 160A 200A Fuse gG 2A 4A 6A 8A 10A 12A 13A 16A 20A 25A 32A 35A 40A 50A 63A 80A 100A 125A 160A 200A 250A 315A 400A 500A 630A 800A 1000A 1250A Fuse aM 2A 4A 6A 10A 12A ...

Страница 63: ...n pfc I ZL PE A FREQ 50 00Hz VL PE 223V Measuring Ra 2Wire 16A 0 2s FUNC MODE MCB C Time 7 In case of positive result ZL PE to limit impedance relative to protection device within the specified time see 12 10 the OK message and the screen to the side are displayed by the instrument L O O P 15 10 18 04 TN min pfc I ZL PE 1213 0 18 A FREQ 50 00Hz VL PE 223V OK Ra 2Wire 16A 0 2s FUNC MODE MCB C Time ...

Страница 64: ...A 200A MCB curve C 0 5A 1A 1 6A 2A 3A 4A 6A 10A 13A 15A 16A 20A 25A 32A 40A 50A 63A 80A 100A 125A 160A 200A MCB curve D K 0 5A 1A 1 6A 2A 3A 4A 6A 10A 13A 15A 16A 20A 25A 32A 40A 45A 50A 63A 80A 100A 125A 160A 200A Fuse gG 2A 4A 6A 8A 10A 12A 13A 16A 20A 25A 32A 35A 40A 50A 63A 80A 100A 125A 160A 200A 250A 315A 400A 500A 630A 800A 1000A 1250A Fuse aM 2A 4A 6A 10A 12A 16A 20A 25A 32A 35A 40A 50A 63...

Страница 65: ...ase of positive result ZL PE to limit impedance relative to protection device within the specified time see 12 10 the OK message and the screen to the side are displayed by the instrument A U T O 15 10 18 04 T N I s c 1 3 6 5 A Z L N 0 1 6 Ω I f c 1 2 1 3 A Z L P E 0 1 8 Ω F R E Q 5 0 0 0 H z V L N 2 3 2 V V L P E 2 3 1 V OK Ra 3Wire 16A 0 2s FUNC MODE MCB C Time 8 In case of negative result ZL PE...

Страница 66: ...nsert the green blue and black connectors of the three pin plug cable into the corresponding inputs B3 B4 and B1 of the instrument As an alternative use the single cables and apply the relevant alligator clips to the free ends of the cables It is also possible to use the remote switch probe by inserting its multipolar connector into the input B1 Connect the mains plug the alligator clips or the re...

Страница 67: ... the point 50V or 25V the NOT OK message and the screen to the side are displayed by the instrument L O O P 15 10 18 04 IT Ipfc Ut 999 50 mA V FREQ 50 00Hz VL PE 232V VL N 234V NOT OK L PE Ut FUNC MODE 9 Press the SAVE key to store the test result in the instrument s memory see 7 1 or the ESC MENU key to exit the screen without saving and go back to the main measuring screen 6 7 9 Verification of ...

Страница 68: ...ameter and go back to the measurement screen 3 If possible disconnect all loads connected downstream of the point to be measured as the impedance of these users could distort the test results Perform the preliminary calibration of the test leads as described in 6 7 2 4 Insert the green and black connectors of the three pin plug cable into the corresponding inputs B3 and B1 of the instrument As an ...

Страница 69: ...he contact voltage value on the secondary display L O O P 15 10 18 04 TT RA Ut 346 10 4 V FREQ 50 00Hz VL PE 232V OK Ra 2Wire 30mA FUNC MODE I n 8 In case of negative result overall earth resistance RA Utlim I n the NOT OK message and the screen to the side are displayed by the instrument The screen contains the contact voltage value on the secondary display L O O P 15 10 18 04 TT RA Ut 1765 50 V ...

Страница 70: ...A 125A 160A 200A MCB curve D K 0 5A 1A 1 6A 2A 3A 4A 6A 10A 13A 15A 16A 20A 25A 32A 40A 45A 50A 63A 80A 100A 125A 160A 200A Fuse gG 2A 4A 6A 8A 10A 12A 13A 16A 20A 25A 32A 35A 40A 50A 63A 80A 100A 125A 160A 200A 250A 315A 400A 500A 630A 800A 1000A 1250A Fuse aM 2A 4A 6A 10A 12A 16A 20A 25A 32A 35A 40A 50A 63A 80A 100A 125A 160A 200A 250A 315A 400A 500A 630A Time the virtual key allows setting the ...

Страница 71: ...ed minimum short circuit current HIGHER than tripping current of the protection device within the specified time see 12 6 the OK message and the screen to the side are displayed by the instrument L O O P 15 10 18 04 TN min pfc I ZL PE 214 1 03 A FREQ 50 00Hz VL PE 232V VL N 231V OK L PE Ut 16A 0 2s FUNC MODE MCB C Time 16 In case of negative result calculated minimum short circuit current LOWER th...

Страница 72: ...PE STD FUNC MODE 3 If the instrument detects a L N or L PE voltage higher than the maximum limit 265V it does not carry out the test and displays a screen like the one to the side Check the connection of measuring cables L O O P 15 10 18 04 TN Ipfc ZL PE A FREQ 50 00Hz VL PE 265V VL N 265V Voltage 265V L PE STD FUNC MODE 4 If the instrument detects a L L voltage higher than the maximum limit 460V ...

Страница 73: ...0 00Hz VL PE 231V VL N 115V Missing N L PE STD FUNC MODE 7 If the instrument detects the absence of the signal to terminal B3 PE conductor it provides the warning screen shown to the side and blocks the execution of the tests L O O P 15 10 18 04 TN Ipfc ZL PE A FREQ 50 00Hz VL PE 115V VL N 231V Missing PE L PE STD FUNC MODE 8 If the instrument detects the absence of the signal to terminal B1 phase...

Страница 74: ...he test and a screen similar to the one reported to the side is displayed Check the connection of measuring cables L O O P 15 10 18 04 TN Ipfc ZL PE A FREQ 50 00Hz VL PE 231V VL N 1V Echange L PE L PE STD FUNC MODE 11 If the instrument detects a dangerous contact voltage Ut above the set limit of 25V or 50V in the starting pre test it provides the warning screen shown to the side and blocks the ex...

Страница 75: ... is not connected to the instrument or not powered directly by the mains L o Z 15 10 18 04 TN Ipsc ZL L A m R m X m FREQ Hz VL L V IMP57 not detected L L STD FUNC MODE 2 Connect the IMP57 to the instrument via the cable C2001 and to the powered system via the input terminals C1 C2 and P1 P2 placed on it see the IMP57 user manual The following screen appears on the display L o Z 15 10 18 04 TN Ipsc...

Страница 76: ...nu by means of the arrow keys and confirm with ENTER Subsequently the instrument displays a screen similar to the one reported here to the side 1 2 3 15 10 18 04 TN 1T MODE 2 Insert the black lead connector into the corresponding input B1 of the instrument As an alternative use the single cable and apply the relevant alligator clips to the free ends of the cables It is also possible to use the rem...

Страница 77: ... showing the Disconnect L1 message as shown in the screen to the side 1 2 3 15 10 18 04 TN Disconnect L1 1T MODE 5 Under these conditions connect the alligator clips the tips or the remote switch probe to phase L2 in accordance to Fig 31 or Fig 32 The Touch L2 message is shown on the display to indicate that the instrument is waiting to be connected to the L2 phase of the system being tested Touch...

Страница 78: ...DE 8 At the end of the test if the two detected voltages are in phase phase concordance between two distinct three phase systems the instrument displays a screen like the one to the side result 11 and the OK message 1 2 3 15 10 18 04 TN 1 1 OK 1T MODE 9 Press the SAVE key to store the test result in the instrument s memory see 7 1 or the ESC MENU key to exit the screen without saving and go back t...

Страница 79: ...trument detects an input L PE voltage exceeding 265V it will display a screen like the one to the side 1 2 3 15 10 18 04 TN Voltage 265V 1T MODE 3 If between the test start and the acquisition of the first voltage or between the acquisition of the first and second voltage a time longer than approx 10s has elapsed the instrument displays a screen like the one to the side It is necessary to repeat t...

Страница 80: ...se to Phase line impedance The test can be performed also with high resolution 0 1m with optional accessory IMP57 CAUTION The measurement of line impedance or fault loop impedance involves the circulation of a maximum current according to the technical specifications of the instrument see 10 1 This could cause the tripping of possible magnetothermal or differential protections at lower tripping cu...

Страница 81: ...n this case the instrument will measure the zeroed impedance upstream of the initial point of the mains being tested taking it as a starting reference 3 Select the CAL mode by means of the arrow keys and perform the calibration of the test cables or of the cable with mains plug by using the ZEROLOOP accessory before performing the test see 6 7 2 4 Connect the instrument to the initial point of the...

Страница 82: ...ot disconnect the measuring leads of the instrument from the system being tested In case of positive result maximum percentage value of calculated voltage drop according to 12 11 set limit value the OK outcome and the screen to the side are displayed by the instrument The screen contains the value of the Z2 end of line impedance together with the Z1 Offset value V 15 10 18 04 V ZL L 0 4 1 57 FREQ ...

Страница 83: ...plied V 15 10 18 04 V ZL N FREQ 50 00 Hz VL PE 100V VL N 100V Voltage 100V L N 16A 4 0 12 MODE Inom Lim Z 3 If the instrument detects an L L voltage higher than the maximum limit 460V it does not carry out the test and displays a screen like the one to the side Check the connection of measuring cables V 15 10 18 04 V ZL N FREQ 50 00 Hz VL PE 242V VL L 460V Voltage 460V L L 16A 4 0 12 MODE Inom Lim...

Страница 84: ...d blocks the execution of the tests V 15 10 18 04 V ZL N FREQ 50 00Hz VL PE 0V VL N 0V Missing L L N 16A 4 0 12 MODE Inom Lim Z 7 If the instrument detects the absence of the signal to terminal B4 neutral conductor it provides the warning screen shown to the side and blocks the execution of the tests V 15 10 18 04 V ZL N FREQ 50 00Hz VL PE 232V VL N 115V Missing N L N 16A 4 0 12 MODE Inom Lim Z 8 ...

Страница 85: ...cts that the phase and PE leads are inverted it does not carry out the test and a screen similar to the one reported to the side is displayed Check the connection of measuring cables V 15 10 18 04 V ZL N FREQ 50 00Hz VL PE 232V VL N 1V Exchange L PE L N 16A 4 0 12 MODE Inom Lim Z 11 If the instrument detects a VL PE VL N or VN PE 5V during the test leads calibration it does not carry out the test ...

Страница 86: ...omment associated with the measure in which a text of max 30 digits can be entered SAVE 15 10 18 04 M e a s u r e 0 0 3 I n s t a l l a t i o n 0 0 1 S t r i n g M o d u l e C o m m e n t m a x 3 0 d i g i t s 2 Use the arrow keys or to select the marker and the arrow keys to change the label of the associated numeric value e g Area among those available or customizable by the user max 20 names 3 ...

Страница 87: ...w keys to select the measure to be recalled to display 3 Press the SAVE ENTER key to display the saved measure Press the ESC MENU key to go back to the previous screen 4 Use the arrow keys or to select option Pag and proceed to the next screen 5 Select the option DEL to delete the whole content of the instrument s memory All option or the last saved data Last option The following screen appears on...

Страница 88: ...ws Task Manager function if necessary The optical port emits invisible LED radiations Do not directly observe with optical instruments Class 1M LED apparatus according to standard IEC EN 60825 1 To transfer data to the PC follow this procedure 1 Switch on the instrument by pressing the ON OFF key 2 Connect the instrument to the PC via the provided optical USB cable C2006 3 Press the ESC MENU key t...

Страница 89: ...eration Before carrying out this operation make sure you have disconnected all cables from the input terminals 1 Switch off the instrument by pressing the ON OFF key 2 Remove the cables from the inputs 3 Loosen the battery compartment cover fastening screw and remove the cover 4 Remove all the batteries from the battery compartment and replace them with new batteries of the right type only 10 3 ma...

Страница 90: ... 5 0 rdg 2dgt 250 0 01 9 99 0 01 2 0 rdg 2dgt 10 0 199 9 0 1 200 249 1 250 499 5 0 rdg 2dgt 500 0 01 9 99 0 01 2 0 rdg 2dgt 10 0 199 9 0 1 200 499 1 500 999 5 0 rdg 2dgt 1000 0 01 9 99 0 01 2 0 rdg 2dgt 10 0 199 9 0 1 200 1999 1 Open circuit voltage rated test voltage 0 10 Rated measuring current 1mA with 1k x Vnom 50V 100V 250V 1000V 2 2mA with 230k 500V Short circuit current 6 0mA for each test ...

Страница 91: ...9 999 50 150 310 A 999 999 999 999 50 150 310 B 999 999 999 999 310 100mA AC 999 999 999 999 50 150 310 A 999 999 999 999 50 150 310 B 999 999 999 999 310 300mA AC 999 999 999 999 50 150 310 A 999 999 999 999 50 150 310 B 999 999 999 999 310 500mA 650mA AC 999 999 999 999 50 150 310 A 999 999 999 999 310 B 1000mA AC 999 999 999 A 999 999 999 B Table with duration of tripping time measurement ms Re...

Страница 92: ... Resolution Accuracy 0 05 9 99 0 01 5 rdg 8dgt 10 0 99 9 0 1 100 1999 1 Overall earth resistance in systems withou Neutral 2 wire 6mA and 10mA RCD Range Resolution Accuracy 0 05 9 99 0 01 5 rdg 30dgt 10 0 99 9 0 1 100 1999 1 Contact voltage measured during RCD and Ra test Range V Resolution V Accuracy 0 Ut LIM 0 1 0 5 0 rdg 3V Phase rotation with 1 test lead Voltage range P N P PE V Frequency rang...

Страница 93: ...ed 1 2kg 42 ounces Mechanical protection IP40 Power supply Battery type 6x1 5V alkaline batteries type AA IEC LR06 MN1500 or 6 x1 2V rechargeable NiMH type AA Low battery indication low battery symbol on the display Battery life 500 tests for each function Auto Power OFF after 5 minutes idling if activated Miscellaneous Display COG Black white graphic LCD 320x240pxl 10 4 ENVIRONMENT 10 4 1 Environ...

Страница 94: ...onsequence of improper packaging Repairs which may become necessary as a consequence of interventions performed by unauthorized personnel Modifications to the instrument performed without the manufacturer s explicit authorization Use not provided for in the instrument s specifications or in the instruction manual The content of this manual cannot be reproduced in any form without the manufacturer ...

Страница 95: ...allation using for example the protective conductor of the closest socket Fig 35 Examples for continuity measurements on conductors Check the continuity among Earth poles of all the plug sockets and earth collector or node Earth terminals of class I appliances boilers etc and earth collector or node Main external masses water tubes gas pipes etc and earth collector or node Additional external mass...

Страница 96: ...he standards the test must be repeated separately for each single conductor The active conductors The guidelines recommend also checking the insulation between active conductors when possible If the system includes electronic devices it is necessary to disconnect them from the system to prevent any damage Should this not be possible only perform the test between active conductors which in this cas...

Страница 97: ... Good 1 6 Excellent 12 2 2 Dielectric Absorption Ratio DAR Parameter DAR consists in the ratio between the value of insulation resistance measured after 30s and after 1 minute The test voltage is maintained throughout the whole duration of the test and at the end the instrument provides the value of ratio 30 min 1 s re Ins re Ins DAR Some reference values DAR Value Insulation condition 1 0 Dangero...

Страница 98: ...rmed if protection is obtained through separation must check that the insulation resistance measured as described below according to the type of separation complies with the limits reported in the table relating to insulation measurements Parts of the system to be checked SELV System Safety Extra Low Voltage Measure the resistance between the active parts of the circuit being tested separated and ...

Страница 99: ...arated circuit and the other to one of the conductors of a non separated circuit TEST BETWEEN ACTIVE PARTS AND EARTH Connect an instrument probe to one of the two conductors of the separated circuit and the other to the equalizing potential node This test must be performed for SELV circuits or circuits with electrical separation only Equalizing potential node Fig 36 Separation measurements between...

Страница 100: ...owever this test only detects 24 of the defective differential switches Parts of the system to be checked All differential switches must be tested upon installation In low voltage systems it is advisable to perform this test fundamental in order to guarantee a correct safety level In medical rooms this test must be performed periodically on all differential switches as prescribed by the guidelines...

Страница 101: ... CAPACITY OF PROTECTION DEVICES Purpose of the test Checking that the breaking capacity of the protection device is higher than the maximum fault current possible in the system Parts of the system to be checked The test must be performed at the point in which the maximum short circuit current is possible normally immediately downstream of the protection device to be checked The test must be perfor...

Страница 102: ...n is satisfied by the following relationshisp Zs Ia Uo where Zs Fault Loop P PE impedance which includes the phase winding of the transformer the line conductor up to the fault point and the protective conductor from the fault point to the star center of the transformer Ia Tripping current of the protection device within the time specified in Table 7 Uo nominal AC voltage referred to ground CAUTIO...

Страница 103: ...ve B Ia 5 10In curve C Ia 10 20In curves D K Fig 37 Example of curves relative to magnetothermal MCB protection The instrument allows the selection of the following parameters MCB curve B 3A 6A 10A 13A 15A 16A 20A 25A 32A 40A 45A 50A 63A 80A 100A 125A 160A 200A MCB curve C 0 5A 1A 1 6A 2A 3A 4A 6A 10A 13A 15A 16A 20A 25A 32A 40A 50A 63A 80A 100A 125A 160A 200A MCB curve D K 0 5A 1A 1 6A 2A 3A 4A 6...

Страница 104: ...nt of the system the following relationships are satisfied ZL PE ZLIM 1 ZL N ZLIM 2 where ZL PE Impedance measured between phase and PE ZL N Impedance measured between phase and neutral ZLIM Maximum limit impedance depending on type MCB or Fuse and tripping time of the selected protection values depending on countries The following selections are available on the instrument MCB curve B 3A 6A 10A 1...

Страница 105: ...2 IdN in Ampere 50 safety limit voltage reduced down to 25V in special environments If the system protection is obtained through a differential switch the measurement must be performed upstream of this switch or downstream of it by short circuiting the switch in order to prevent it from tripping These methods although not currently provided for by guidelines provide values that have been proven in...

Страница 106: ...cautions to avoid the risk of harmful physiological effects on people in contact with conductive parts simultaneously accessible in case of a double earth fault Purpose of the test Verifying that the impedance of the ground probe which the masses are connected to satisfies the following relationship L d E U I Z where ZE L PE impedance of the ground probe to which the masses are connected Id L PE c...

Страница 107: ...fied time according to the following expressions a Min L L SC I I 2 _ Three phase system Loop L L impedance a Min N L SC I I _ Single phase system Loop L N impedance a Min PE L SC I I _ Single phase system Loop L PE impedance where Isc L L_Min2F Prospective short circuit current minimum double phase L L Isc L N_Min Prospective short circuit current minimum L N Isc L PE_Min Prospective short circui...

Страница 108: ...n by the protection The instrument allows the selection of the following parameters MCB curve B 3A 6A 10A 13A 15A 16A 20A 25A 32A 40A 45A 50A 63A 80A 100A 125A 160A 200A MCB curve C 0 5A 1A 1 6A 2A 3A 4A 6A 10A 13A 15A 16A 20A 25A 32A 40A 50A 63A 80A 100A 125A 160A 200A MCB curve D K 0 5A 1A 1 6A 2A 3A 4A 6A 10A 13A 15A 16A 20A 25A 32A 40A 45A 50A 63A 80A 100A 125A 160A 200A Fuse gG 2A 4A 6A 8A 10...

Страница 109: ...nitial point of mains power line typically downstream of a protection device and in the final point of the same line Allowable values The instrument compares the calculated value of V maximum voltage drop to the set limit value according to applicable guidelines according to the following relationship 100 INOM 1 2 NOM MAX V V Z Z where Z2 End point impedance of the mains being tested Z1 Initial po...

Страница 110: ......

Страница 111: ...8775 Fax 55 19 9979 11325 eMail vendas ht instruments com br Web www ht instruments com br HT INSTRUMENTS USA LLC 3145 Bordentown Avenue W3 08859 Parlin NJ USA Tel 1 719 421 9323 eMail sales ht instruments us Web www ht instruments com HT INSTRUMENTS GMBH Am Waldfriedhof 1b D 41352 Korschenbroich GER Tel 49 0 2161 564 581 Fax 49 0 2161 564 583 eMail info ht instruments de Web www ht instruments de...

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