HT F3000U Скачать руководство пользователя страница 25 | Manualshive

Страница: 25 / 46

background image

NEPTUNE

EN - 23

5.7. CONTINUITY OF PROTECTIVE CONDUCTORS WITH 200MA

This function is performed in compliance with standard IEC/EN61557-4 and allows
measuring the continuity of protective and equipotential conductors. The following
operating modes are available:



AUTO

the test is activated by pressing key

GO/HOLD

and the result is immediately

displayed after comparing it with the set maximum threshold value.
Recommended mode



TMR

the test is carried out in a continuous mode for the duration (timer) set in range

1s ÷ 30s

, and the result is shown on the display after comparing it with the set

maximum threshold value.



ZERO

compensation of the resistance of the cables used for measurement. The

instrument automatically subtracts the value of cable resistance from the
measured resistance value. It is therefore necessary that this value is measured
(by means of the

ZERO

function) each time the test cables are changed or

extended.

AUTO mode

CAUTION



Check that the circuit being tested is not live and that all possible loads

normally connected to it are disconnected before carrying out insulation
measurement.



The continuity test is performed by supplying a current higher than 200mA for

resistances not higher than

5



(including the resistance of the measuring

cables). For higher resistance values, the instrument carries out the test with
a current lower than 200mA.

Fig. 25: Use of the instrument for continuity test in AUTO mode

«
...
23
24
25
26
27
...
»

Содержание F3000U

Страница 1: ... Copyright HT ITALIA 2018 Release EN 1 00 31 10 2018 ENGLISH User manual ...

Страница 2: ......

Страница 3: ...ucer 10 5 OPERATING INSTRUCTIONS 11 5 1 DC voltage measurement 11 5 2 AC AC DC voltage measurement 12 5 3 AC DC AC DC voltage with low impedance LoZ 13 5 4 Resistance measurement and continuity test 14 5 5 Phase sequence and phase concordance with 1 terminal 15 5 6 Measurement of insulation resistance 17 5 7 Continuity of protective conductors with 200mA 23 5 7 1 Function ZERO Zeroing of test cabl...

Страница 4: ...e could damage the instrument or its components High voltage danger electrical shock hazard Double insulated meter AC voltage or current DC voltage or current Connection to earth 1 1 PRELIMINARY INSTRUCTIONS This instrument has been designed for use in environments of pollution degree 2 It can be used for VOLTAGE and CURRENT measurements on installations with CAT IV 600V CAT III 1000V to earth and...

Страница 5: ...CATEGORY Standard IEC EN61010 1 Safety requirements for electrical equipment for measurement control and laboratory use Part 1 General requirements defines what measurement category commonly called overvoltage category is 6 7 4 reads Circuits are divided into the following measurement categories Measurement category IV is for measurements performed at the source of the low voltage installation Exa...

Страница 6: ...ve at fundamental frequency 50 or 60 Hz TRMS True Root Mean Square VALUE meters instruments measuring the TRMS value of the quantity being tested With a perfectly sinusoidal wave the two families of instruments provide identical results With distorted waves instead the readings shall differ Average value meters provide the RMS value of the sole fundamental wave TRMS meters instead provide the RMS ...

Страница 7: ...he forwarding agent We also recommend checking that the packaging contains all components indicated in 6 3 1 In case of discrepancy please contact the Dealer In case the instrument should be returned please follow the instructions given in 7 3 2 INSTRUMENT POWER SUPPLY The instrument is supplied with 4x1 5V alkaline batteries type AAA IEC LR03 included in the package When batteries are flat the sy...

Страница 8: ...t terminal COM 10 Input terminal V Fig 1 Description of the instrument 4 1 1 Instrument s initial screen 1 Turn the rotary switch to any position to switch on the instrument The following initial screen is shown on the display for a few seconds to identify the internal Hardware and Firmware version Fig 2 Instrument s initial screen 2 Turn the rotary switch to OFF to switch off the instrument ...

Страница 9: ...e keys ZERO and to increase decrease the order of the harmonic Fig 3 Display of amplitude of harmonic analysis Long pressing of the key at least 2s in order to activate the H2O Higher Harmonic Ordering ordering function of the amplitude of harmonics In these conditions function HOLD is automatically activated and symbol o appears next to the displayed harmonic order to indicate that the Ordering f...

Страница 10: ...accessory option in position among values 30A 300A 3000A for AC current measurement Setting of the full scale value of standard clamp transducer option in position among values 1A 10A 30A 40A 100A 200A 300A 400A 1000A 2000A 3000A for AC and DC current measurement Selection of harmonic order DC 25 in positions V LoZV and Selection of calculation time of RMS value in DIRC function see 4 2 8 Setting ...

Страница 11: ... non linear loads e g welding machines ovens etc 4 2 8 Inrush current function INRUSH Measurement of inrush current see 5 8 is intended as the recognition of an event detected upon exceeding of a trigger threshold If the instant value exceeds this threshold fixed equal to 1 FS clamp the instrument shows on the display the maximum Peak value calculated in 1ms and the maximum RMS value calculated wi...

Страница 12: ...ull scale value to be set Proceed as follows 1 Switch off the instrument OFF 2 Press and hold key MODE MXMNPK and switch on the instrument by turning the rotary switch The following screen appears on the display Fig 5 Setting the full scale for flexible clamp transducer 3 Press keys or to set the full scale value of the clamp in use among the options 3VAC model F3000U or 1VAC other models 4 Press ...

Страница 13: ... 2 Insert the red cable into input terminal V and the black cable into input terminal COM 3 Position the red lead and the black lead respectively in the spots with positive and negative potential of the circuit to be measured see Fig 6 The display shows the value of voltage 4 If the display shows the message 1000V see Fig 6 the maximum measurable value has been reached 5 When symbol appears on the...

Страница 14: ...ert the red cable into input terminal V and the black cable into input terminal COM 4 Position the red lead and the black lead respectively in the spots of the circuit to be measured see Fig 7 The display shows the value of voltage On the top of the display on the right side the value of voltage frequency is displayed Press key MODE MXMNPK to display the value of frequency with a higher resolution...

Страница 15: ...cable into input terminal COM 4 Position the red lead and the black lead respectively in the positions of the circuit to be tested see Fig 8 for AC voltage measurement or in the positions with a positive or negative potential of the circuit to be tested see Fig 6 for DC voltage measurement The display shows the value of voltage On the top of the display on the right side the value of voltage frequ...

Страница 16: ... and press key ZERO to zero the resistance of the measuring cables The symbol ZERO appears on the display 4 Position the test leads in the desired spots of the circuit to be measured see Fig 9 The display shows the value of resistance 5 If the display shows the message 2000 see Fig 9 the maximum measurable value has been reached 6 Press key MODE MXMNPK to select measurement relevant to the continu...

Страница 17: ...ment for phase sequence and phase concordance test 1 Select position Message PH 1 flashes on the display 2 Insert the red lead into input terminal V 3 Position the red lead onto phase L1 of the three phase system to be tested see Fig 10 The following messages may appear on the display see Fig 11 to identify the presence of a voltage signal with frequency out of range 42 5Hz 69Hz In these condition...

Страница 18: ...takes more than 10s the instrument shows message t out on the display see Fig 13 left side In conditions of correct voltage and frequency the instrument shows message HOLD symbols and PH2 and the buzzer sounds continuously waiting for a stable voltage value on phase L2 to be detected see Fig 13 right side 7 Upon detection of a stable voltage value on phase L2 the instrument automatically shows mes...

Страница 19: ... instrument will display the value of parameter DAR Dielectric Absorption Ratio see 9 2 2 1min 10min If the set time is 10min the instrument will display the value of parameter PI Polarization Index see 9 2 1 AUTO mode CAUTION Check that the circuit being tested is not live and that all possible loads normally connected to it are disconnected before carrying out insulation measurement We recommend...

Страница 20: ...enting the test to be carried out Fig 17 Presence of voltage on the input terminals 9 In case no anomalous conditions are found the instrument performs the test until key GO HOLD is pressed and held Otherwise the test has a duration of approx 3s if the key is immediately released symbol flashes on the display and the buzzer gives out an intermittent sound At the end of the test the following scree...

Страница 21: ... key VTEST LIM to set the test voltage choosing among the values 50V 100V 250V 500V 1000VDC Please note the value in the top part of the display 4 Press and hold key VTEST LIM 2s to set the minimum limit threshold for measurement The symbol Set flashes on the display Press keys or ZERO to select the value among the options 0 10M 0 230M 0 50M 1 00M 100M no Option no indicates that no threshold was ...

Страница 22: ...stance is present symbol 1999 indicates the out of range condition at the end of measurement with positive result OK value higher than the set threshold In the screen in Fig 21 right side the value of insulation resistance is present at the end of measurement with negative result NOT OK value lower than the set threshold 10 Press keys or ZERO to display the real applied voltage PI mode The PI mode...

Страница 23: ...AR measurement or 10min for PI measurement Please note the value in the top part of the display on the right see Fig 20 6 Insert the red lead into input terminal V and the black lead into input terminal COM and possible alligator clips and connect the instrument to the appliance to be tested see Fig 22 7 Press key GO HOLD to activate the test The screen in Fig 17 may appear on the display to signa...

Страница 24: ... than the set threshold In the screen in Fig 23 right side the value of insulation resistance is present at the end of measurement with negative result NOT OK value lower than the set threshold 10 Press keys or ZERO to display the real applied voltage the value of parameter PI or the value of parameter DAR see Fig 24 Fig 24 Results of PI and DAR measurements ...

Страница 25: ...ue ZERO compensation of the resistance of the cables used for measurement The instrument automatically subtracts the value of cable resistance from the measured resistance value It is therefore necessary that this value is measured by means of the ZERO function each time the test cables are changed or extended AUTO mode CAUTION Check that the circuit being tested is not live and that all possible ...

Страница 26: ... GO HOLD to activate the test The following screen may appear on the display to signal the presence of a voltage 10V found on the input terminals preventing the test to be carried out Fig 27 Presence of voltage on the input terminals 9 In case no anomalous conditions are present the instrument carries out the test and symbol flashes on the display At the end of the test the following screens appea...

Страница 27: ...instrument carries out the test with a current lower than 200mA Fig 29 Use of the instrument for continuity test in TMR mode 1 Select position Lo 2 Press key MODE MXMNPK and select option TMR 3 Press and hold key VTEST LIM 2s to set the maximum limit threshold for measurement The symbol Set flashes on the display 4 Press keys or ZERO to select the value in the range 0 05 9 99 see Fig 26 5 Press ke...

Страница 28: ...nstrument performs the test in a continuous mode with a countdown of time until time 0 for the entire duration of the set timer and symbol flashes on the display At the end of the test the following screens appear on the display Fig 31 Results of continuity test in TMR mode 10 In the screen in Fig 31 left side a positive test result OK is shown value lower than the set threshold and test current 2...

Страница 29: ...V and COM connect the alligator clips and shot circuit the cable ends between each other see Fig 32 Fig 32 Connection of the cables in compensation function 3 Press and hold 2s key ZERO The instrument starts the compensation procedure of cable resistance immediately followed by the verification of the compensated value The following screens are displayed in a quick sequence Fig 33 Results of a cor...

Страница 30: ...es 5 00 the instrument shows the following screens in a quick sequence Fig 34 Results of zeroing not correctly performed 6 Messages 5 00 and NOT OK are initially shown on the display see Fig 34 left side Subsequently message CLr is shown to indicate that calibration has been cancelled see Fig 34 middle and the message ZERO is not shown in the measuring screen see Fig 34 right side 7 To zero a cabl...

Страница 31: ...NBA is necessary to obtain the connection Fig 36 Use of the instrument for current measurement with clamp transducer 1 Select the position 2 Press key MODE MXMNPK to select the type of clamp transducer among the options flexible clamp transducer only AC or standard clamp transducer AC or DC 3 Press keys or and on the instrument select the same range set on the clamp among the options 30A 300A 3000...

Страница 32: ...rent is shown in Fig 37 Fig 37 Result of AC current measurement with standard and flexible clamp 9 Press key MODE MXMNPK to display the value of frequency of AC current with a high resolution see Fig 38 Fig 38 Result of frequency measurement with standard and flexible clamp 10 The following screens may be shown on the display Fig 39 Anomalous situations on current measurement with clamp transducer...

Страница 33: ...cer AC or DC 3 Press the keys or and on the instrument select the same range set on the clamp among the options 30A 300A 3000A AC current measurement with flexible clamp or 1A 10A 30A 40A 100A 200A 300A 400A 1000A 2000A 3000A for AC or AC DC current measurement with standard clamp 4 For flexible clamp transducers set the relevant full scale value see 4 2 10 5 Press key GO HOLD to confirm settings ...

Страница 34: ... see Fig 42 left side Max RMS value calculated in 16 7ms Max RMS value calculated in 20ms Max RMS value calculated in 50ms Max RMS value calculated in 100ms Max RMS value calculated in 150ms Max RMS value calculated in 175ms Max RMS value calculated in 200ms Fig 42 Examples of display of inrush current 11 If the measured current is higher than the set FS of the clamp a message like the one in Fig ...

Страница 35: ...eplaced operating as follows Fig 43 Screen with low battery indication 1 Position the rotary switch to OFF and remove the cables from the input terminals 2 Turn the fastening screw of the battery compartment cover from position to position and remove it 3 Remove the battery and insert a new battery of the same type see 7 1 1 respecting the indicated polarity 4 Restore the battery compartment cover...

Страница 36: ...racy 1 3000 1 0 5 rdg 2digits For frequency 100Hz accuracy is 1 5 reading 5digits Max crest factor 3 Frequency bandwidth 1kHz Current zeroed for value 1 FS A AC TRMS Current flexible clamp FS 1V and DC AC AC DC STD clamp Autorange Range mV Resolution mV Accuracy 1 1000 1 0 5 rdg 2digits For frequency 100Hz accuracy is 1 5 reading 5digits Max crest factor Frequency bandwidth 1kHz Current zeroed for...

Страница 37: ... 10 0 99 9 0 1 100 0 199 9 5 0 read 2digits 250 0 01 9 99 0 01 2 0 read 2digits 10 0 99 9 0 1 100 499 1 5 0 read 2digits 500 0 01 9 99 0 01 2 0 read 2digits 10 0 199 9 0 1 200 499 1 500 999 5 0 read 2digits 1000 0 01 9 99 0 01 2 0 read 2digits 10 0 199 9 0 1 200 999 1 1000 1999 5 0 read 2digits Open circuit voltage rated test voltage 0 10 Short circuit current 6mA peak with each rated test voltage...

Страница 38: ... OFF V A approx 68h backlight ON M 500V approx 400 tests backlight OFF Lo approx 2000 tests backlight OFF Auto Power Off after 15 minutes idling can be disabled Display Type of display 4 dgt LCD max 9999 dots decimal sign point backlight and bargraph indication of polarity Sampling frequency 2 times s Conversion RMS 7 2 ENVIRONMENTAL CONDITIONS FOR USE Reference temperature 23 C 5 C 73 F 41 F Oper...

Страница 39: ...sequence 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 s ...

Страница 40: ...ipe and the other to the earth installation using for example the protective conductor of the closest socket Fig 44 Examples of continuity measures of conductors Check continuity between 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 tubes etc and earth terminal or no...

Страница 41: ...rs may be connected to each other Should the measured result not be within the limits prescribed by the standards the test must be repeated separately for each single conductor Active conductors Guidelines recommends also checking the insulation between active conductors when it is possible Allowable values The values of the measured voltage and of the minimum insulation resistance can be taken fr...

Страница 42: ... load which have the function of separating the load from the system Should these switches not be provided or should they be single pole switches it is necessary to disconnect the users from the system before performing the insulation resistance test An indicative procedure of how to measure the insulation resistance of a system is given in the table below ...

Страница 43: ...sulation in he system reported in Fig 45 In the presence of a very extended circuit wires running side by side constitute a capacity that the instrument must load in order to obtain a correct measurement in this case it is advisable to hold the start button of the measurement in case you run the test in manual mode until the result is stable When performing measurements between active conductors i...

Страница 44: ...after 1 minute and after 10 minutes The test voltage is maintained throughout the whole duration of the test and at the end the instrument provides the value of ratio min 1 min 10 Riso Riso PI Some reference values PI Value Insulation condition from 1 0 to 1 25 Not acceptable from 1 4 to 1 6 Good 1 6 Excellent 9 2 2 Dielectric Absorption Ratio DAR Parameter DAR consists in the ratio between the va...

Страница 45: ...ps or fluctuations It can be seen from 1 that each signal consists of the summation of infinite harmonics However an order number exists beyond which the value of the harmonics may be considered as negligible Standard EN50160 suggests cutting the summation in the expression 1 at the 40th harmonic A fundamental index to detect the presence of harmonics is the THD Total Harmonic Distortion defined a...

Страница 46: ...x 5 6 3 5 2 2 7 5 9 1 5 4 1 11 3 5 15 0 5 6 24 0 5 13 3 21 0 5 17 2 19 1 5 23 1 5 25 1 5 Table 4 Limits for the harmonic voltages the supplier may introduce into the network These limits which theoretically apply only to Electric Power Suppliers anyway provide a series of reference values within which also the harmonics put into network by users should be kept ...

Отзывы:

Нет отзывов

Похожие инструкции для F3000U

Бренд: Keithley Страницы: 366

Бренд: UEi Страницы: 10

Бренд: C-LOGIC Страницы: 4

Бренд: Keithley Страницы: 76

VersiVision FVRM4B2x

Бренд: Versitron Страницы: 10

Бренд: hager Страницы: 9

Бренд: Hanna Страницы: 28

Бренд: Velleman Страницы: 11

Бренд: Velleman Страницы: 15

Бренд: IDEAL INDUSTRIES Страницы: 23

Бренд: DANA Страницы: 149

Бренд: TPS Страницы: 29

Бренд: Radio Shack Страницы: 13

Бренд: Keithley Страницы: 43

Бренд: Magnum Страницы: 18

Бренд: Velleman Страницы: 30

Бренд: Hanna Instruments Страницы: 2

Бренд: UEi Страницы: 6

Бренды по названию

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Популярные бренды

Загрузить еще бренды