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EQUITEST5071
User Manual
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HT instruments EQUITEST5071 User Manual

User manual
EQUITEST 5071
Copyright HT ITALIA 2013 Versione EN 1.00 - 15/01/2013
EQUITEST 5071
Table of contents
1.1.Preliminary instructions ......................................................................................................... 2
1.2.During use ............................................................................................................................. 3
1.3.After use ................................................................................................................................ 3
Definition of measurement (overvoltage) category ......................................................................... 3
3.1.Initial checks .......................................................................................................................... 4
3.2.Instrument power supply ....................................................................................................... 4
3.3.Calibration ............................................................................................................................. 4
3.4.Storage .................................................................................................................................. 4
4.1.Front panel ............................................................................................................................ 5
4.2.Input and output leads ........................................................................................................... 5
4.3.Description of function keys .................................................................................................. 6
4.4.Display description ................................................................................................................ 6
4.5.Initial screen .......................................................................................................................... 6
4.6.Backlight ................................................................................................................................ 7
5.1.Adjusting display contrast ...................................................................................................... 7
5.2.Adjusting date and time ......................................................................................................... 8
5.3.Language setting ................................................................................................................... 8
6.1.LOW: Continuity of protective conductors with 200mA....................................................... 9
6.1.1.Calibration of measuring cables .................................................................................................. 10
6.1.2.Measuring.................................................................................................................................... 11
6.1.2.1.Anomalous situations in "AUTO", "RT+", "RT-" mode........................................................................... 13
6.2.LOW10A: Continuity of protective conductors with 10A ................................................... 14
6.2.1.Measuring.................................................................................................................................... 14
6.2.2.Anomalous situations .................................................................................................................. 16
6.3.LOW10AE204: Continuity 10A in compliance with IEC/EN60204-1:2006 ........................ 17
6.3.1.Measuring.................................................................................................................................... 18
6.3.2.Anomalous situations .................................................................................................................. 20
6.4.LOOP/Ra
6.4.1.High-resolution impedance measurement (0.1 m) ................................................................... 22
6.4.2."P-N" mode: measurement procedure and results ..................................................................... 22
6.4.3."P-P" mode: measurement procedure and results...................................................................... 24
6.4.4."P-PE" mode: measurement procedure and results ................................................................... 25
6.4.5."RA" mode: measurement procedure and results ................................................................... 27
6.4.6." " mode: measurement procedure and results ....................................................................... 29
: Loop impedance, overall earth resistance and phase sequence .................. 21
6.4.6.1.Anomalous situations in "P-P", "P-N", "P-PE","RA", " " mode ...................................................... 30
7.1.Storage of measurement results ......................................................................................... 34
7.2.Recalling and deleting data from the memory ..................................................................... 34
9.1.General information ............................................................................................................. 36
9.2.Battery replacement ............................................................................................................ 36
9.3.Cleaning the instrument ...................................................................................................... 36
9.4.End of life ............................................................................................................................ 36
10.1.Reference standards ........................................................................................................... 38
10.2.General characteristics ........................................................................................................ 38
10.3.Environmental conditions .................................................................................................... 38
10.4.Accessories ......................................................................................................................... 38
11.1.Warranty conditions ............................................................................................................. 39
11.2.Service ................................................................................................................................ 39
EN - 1
EQUITEST 5071
1. PRECAUTIONS AND SAFETY MEASURES
The instrument has been designed in compliance with Standards IEC/EN61557 and IEC/EN 61010-1 relevant to electronic measuring instruments.
For your safety and in order to prevent damaging the instrument, please carefully follow the procedures described in this manual and read all notes
preceded by the symbol with the utmost attention.
Before and after carrying out the measurements, carefully observe the following instructions:
Do not carry out any voltage or current measurement in humid environments Do not carry out any measurements in case gas, explosive materials or flammables are
present, or in dusty environments
Avoid contact with the circuit being measured if no measurements are being carried out Avoid contact with exposed metal parts, unused measuring probes, circuits, etc. Do not carry out any measurement in case you find anomalies in the instrument such
as deformation, substance leaks, absence of display on the screen, etc.
Pay special attention when measuring voltages higher than 25V in special
environments (such as construction sites, swimming pools, etc.) and 50V in normal environments, since a risk of electrical shock exists.
Only use original accessories. In this manual, and on the instrument, the following symbols are used:
CAUTION: observe the instructions given in this manual; improper use could damage the instrument, its components and create dangerous situations for the operator.
CAUTION
Presence of dangerous voltage ( 30V): electrical shock hazard
Double-insulated meter
AC voltage or current
Connection to earth
1.1. PRELIMINARY INSTRUCTIONS
This instrument has been designed for use in environments of pollution degree 2. The instrument may be used for measuring and verifying the safety of electrical
systems of overvoltage category CAT III 300V (to earth) or CAT II 350V (to earth).
We recommend following the normal safety rules devised to protect the user against
dangerous currents and the instrument against incorrect use.
Only the accessories provided together with the instrument will guarantee safety
standards. If necessary, replace them with identical models.
Do not test circuits exceeding the specified current and voltage limits. Do not perform
any test under environmental conditions exceeding the limits indicated in § 10.3.
Check that the batteries are correctly inserted. Before connecting the test leads to the circuit to be tested, make sure that the switch is
correctly set.
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EQUITEST 5071
1.2. DURING USE
Please carefully read the following recommendations and instructions:
CAUTION
Failure to comply with the caution notes and/or instructions may damage the instrument and/or its components or be a source of danger for the operator.
Before activating the rotary switch, disconnect the test leads from the circuit under test. When the instrument is connected to the circuit under test, never touch any terminal,
even if unused.
Avoid measuring resistance if external voltages are present. Even if the instrument is
protected, excessive voltage could cause damage.
1.3. AFTER USE
When measurements are complete, turn off the instrument by pressing and holding the
ON/OFF key for some seconds.
If the instrument is not to be used for a long time, remove the batteries and follow the
instructions given in § 9.2.
DEFINITION OF MEASUREMENT (OVERVOLTAGE) 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: Measured circuits, reads:
Circuits are divided into the following measurement categories: Measurement category IV is for measurements performed at the source of the 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 inside buildings.
Examples are measurements on distribution boards, circuit breakers, wiring, including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed installation, and equipment for industrial use and some other equipment, for example, stationary motors with permanent connection to fixed installation.
Measurement category II is for measurements performed on circuits directly
connected to the low-voltage installation
Examples are measurements on household appliances, portable tools and similar equipment
Measurement category I is for measurements performed on circuits not directly
connected to MAINS.
Examples are measurements on circuits not derived from MAINS, and specially protected (internal) MAINS-derived circuits. In the latter case, transient stresses are variable; for that reason, the standard requires that the transient withstand capability of the equipment is made known to the user.
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EQUITEST 5071
2. GENERAL DESCRIPTION
Instrument EQUITEST 5071 carries out the following measurements: LOW: Continuity test of protective conductors with test current of 200mA in
compliance with standard IEC/EN61557-4
LOW10A: Continuity test of protective conductors with test current of 10A in
compliance with standard IEC/EN60439-1
LOW10AE60204: Continuity test of protective conductors with test current of 10A in
compliance with standard IEC/EN60204-1:2006.
LOOP/Ra : measurement of line impedance and fault loop impedance with
calculation of the assumed short-circuit current, also with high resolution (0.1m) with optional accessory IMP57 / measurement of overall earth resistance without causing the differential protections’ tripping (function RA) / phase rotation.
3. PREPARATION FOR USE
3.1. INITIAL CHECKS
Before shipping, the instrument has been checked from an electric as well as mechanical point of view. All possible precautions have been taken so that the instrument is delivered undamaged.
However, we recommend rapidly checking it to detect any damage possibly suffered during transport. In case anomalies are found, immediately contact the Dealer.
We also recommend checking that the packaging contains all components indicated in §
10.4. In case of discrepancy, 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 supplied by six 1.5V alkaline batteries type LR6 AA AM3 MN 1500, not included in the package. For battery installation, follow the instructions given in § 9.2.
The instrument AUTOMATICALLY turns OFF display backlight after
approximately 5 seconds.
In order to extend the battery life, in case battery voltage is too low, the
instrument deactivates display backlighting.
3.3. CALIBRATION
The instrument has the technical specifications described in this manual. Its performance is guaranteed for 12 months from the date of purchase.
3.4. STORAGE
In order to guarantee precise measurement, after a long storage time under extreme environmental conditions, wait for the instrument to come back to normal condition (see
§ 10.3)
CAUTION
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EQUITEST 5071
4. INSTRUMENT DESCRIPTION
4.1. FRONT PANEL
CAPTION:
1. LCD display
2. F1, F2, F3, F4 keys
3. / key
4. START/STOP key
5. HOLD/ENTER key
6. SAVE key
7. ESC key
8. MENU key
9. Rotary selector switch
Fig. 1: Description of the instrument’s front panel
4.2. INPUT AND OUTPUT LEADS
CAPTION:
1. B1, B2, B3, B4 inputs
2. Input for external 230V/50Hz power supply for functions LOW10A and LOW10AE60204
3. Optical serial output for PC connection
Fig. 2: Description of the instrument’s inputs and outputs
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EQUITEST 5071
4.3. DESCRIPTION OF FUNCTION KEYS Key Description
Key to switch on/off the instrument. Press and hold the key for
/
some seconds to turn off the instrument. Shortly press this key to activate display backlighting.
F1, F2, F3, F4
Keys for programming the internal parameters associated with the functions of the instrument.
START/STOP Key for starting measuring. STOP function not enabled.
SAVE Key for saving measurement results.
HOLD/ENTER
ENTER key to confirm the parameters set within the general menu of the instrument. HOLD function not enabled.
MENU Key to access the instrument’s general menu.
ESC Key to quit the selected mode shown on the display.
4.4. DISPLAY DESCRIPTION
The display is a graphic module with a resolution of 128 x 128 dots. The first line of the display shows the instrument’s date and time. In the top right-hand corner of the display there is the battery charge indicator.
LOW 30.11.12
----
R+ R-
---- ----
---mA ---mA
AUTO 0.11
FUNC CAL
For the sake of brevity, these symbols will be omitted in the following screenshots of this manual.
4.5. INITIAL SCREEN
When turning on the instrument with the / key, the following screen appears for a few seconds:
It contains (further to the name of the Manufacturer and to
HT5071
the instrument model): The serial number (SN:) of the instrument.
HT
SN:12345678 V: 1.59
Baud Rate 57600
CALIBRATION DATE:
30.11.12
The firmware version (V:) in the instrument's memory. The date of the last instrument calibration
(CALIBRATION DATE).
The serial transmission speed (Baud Rate).
Press ESC to exit this screen.
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EQUITEST 5071
4.6. BACKLIGHT
During instrument operation, a further short pressing of the / key turns on the display’s backlighting. In order to save battery efficiency, backlighting automatically turns off after approx. 5 seconds. A frequent use of backlighting reduces the batteries’ life.
5. INITIAL SETTINGS
When pressing the MENU key, the display shows the following screen, which allows accessing the General Menu:
GENERAL MENU
SAFETY TEST MEMORY
CONTRAST DATE&TIME LANGUAGE
The following items are available:
Safety Test Memory memory area for saving measuring results. Contrast  function to adjust display contrast. Date&Time  function to adjust system date/time. Language  function to select system language.
5.1. ADJUSTING DISPLAY CONTRAST
Proceed as follows:
1. Press the MENU key with the selector switch in any position to enter the General
Menu.
2. Use the F1 key to move the cursor to “CONTRAST”. Confirm with ENTER. The
following screen appears on the display:
CONTRAST
CONTRAST
35%
+ -
3. Use the F3 and F4 keys to set the desired percentage value.
4. Press the ENTER key to confirm. The settings made shall remain valid also after
switching off the instrument.
5. Press the ESC key to exit without saving.
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EQUITEST 5071
5.2. ADJUSTING DATE AND TIME
Proceed as follows:
1. Press the MENU key with the selector switch in any position to enter the General
Menu.
2. Use the F1 key to move the cursor to “DATE&TIME”. Confirm with ENTER. The
following screen appears on the display:
DATE&TIME
25 . 08 . 12
15 : 25 : 00
+ -
3. Use the F1 and F2 keys to alternately select the date and time fields. The selected field
appears with a black background. The date is expressed with format: “gg.mm.aa” while time is expressed in format: “hh:mm:ss”
4. Use the F3 and F4 keys to increase or decrease the value of date/time.
5. Press the ENTER key to confirm. The settings made shall remain valid also after
switching off the instrument.
6. Press the ESC key to exit without saving.
5.3. LANGUAGE SETTING
Proceed as follows:
1. Press the MENU key with the selector switch in any position to enter the General
Menu.
2. Use the F1 key to move the cursor to “LANGUAGE”. Confirm with ENTER. The
following screen appears on the display:
LANGUAGE
ITALIAN
ENGLISH SPANISH GERMAN FRENCH
3. Use the F1 and F2 keys to select the desired language among those available.
4. Press the ENTER key to confirm. The settings made shall remain valid also after
switching off the instrument.
5. Press the ESC key to exit without saving.
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EQUITEST 5071
6. OPERATING INSTRUCTIONS
6.1. LOW: CONTINUITY OF PROTECTIVE CONDUCTORS WITH 200mA
Measurement is carried out in compliance with standard IEC/EN61557-4.
Before carrying out the continuity test, make sure there is no voltage at the ends of the conductor to be analyzed.
Turn the rotary switch to LOW.
With the F1 key it is possible to select one of the following measuring modes (which cyclically appear when pressing the key):
“AUTO” mode (the instrument carries out two measurements with
inverted polarity and displays their average value). Recommended mode for continuity test
“RT+” mode (measurement with positive polarity and with the possibility
of setting a duration time for testing). In this case, the operator may set a sufficiently long measuring time to be able to move the protective conductors while the instrument is carrying out the test, in order to find out a possible bad connection.
“RT-” mode (measurement with negative polarity and with the possibility
of setting a duration time for testing). In this case, the operator may set a sufficiently long measuring time to be able to move the protective conductors while the instrument is carrying out the test, in order to find out a possible bad connection.
With the F2 key it is possible to select the “CAL“ mode (compensation of the resistance of the cables used for measuring).
CAUTION
CAUTION
Continuity test is carried out by applying a current higher than 200mA in case resistance does not exceed 5 (including the measuring cables’ resistance saved as offset value in the instrument after carrying out the calibration procedure). For higher resistance values, the instrument carries out the test with a current lower than 200mA.
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EQUITEST 5071
A
6.1.1. Calibration of measuring cables
1. Insert the black cable and the blue cable into the relevant input terminals B1 and B4 of
the instrument.
Fig. 3: Terminal connection during calibration procedure
2. If, for the measurement to be carried out, the length of the cables provided should be
insufficient, extend the blue cable.
3. Insert two alligator clips into the cable terminals.
4. Short-circuit the measuring cables’ ends, taking care that the conductive parts of the
alligator clips have good contact (see Fig. 3)
5. Press the F2 key. The instrument calibrates.
CAUTION
Never disconnect the terminals from the measuring points when the instrument shows the message "MEASURING…".
LOW 30.11.12
----
R+ R-
---- ----
---mA ---mA
UTO 0.11
FUNC CAL
This numerical value indicates that calibration has been carried out
6. At measurement end, the instrument gives out a double sound, to indicate that
calibration has been correctly carried out. The value of calibration is updated and displayed above the F2 key. This value shall remain saved also after the instrument has been switched off.
CAUTION
The instrument calibrates the measuring cables only if their resistance is
lower than 5
Before carrying out any measurement, always make sure that calibration
is referred to the cables currently used. In a continuity test, if the purified resistance value (i.e. the value of resistance minus the calibration offset value) is negative, the symbol “CAL” flashes on the display.
7. To delete the calibration parameter it is necessary to carry out a calibration
procedure with a lead resistance higher than 5 (e.g. with open leads). When carrying out a deletion, the symbol “- - -“ is shown on the display above the F2 key.
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EQUITEST 5071
6.1.2. Measuring
1. Select the desired mode using the F1 key.
2. Insert the black cable and the blue cable into the relevant input terminals B1 and B4 of
the instrument:
Fig. 4: Instrument connection for LOW test
3. If, for the measurement to be carried out, the length of the cables provided should be
insufficient, extend the blue cable.
4. Insert two alligator clips into the cable terminals.
5. Short-circuit the measuring cables’ ends, taking care that the conductive parts of the
alligator clips have good contact. Press the START/STOP key. If the instrument shows a resistance value different from 0,00 repeat the calibration operation (see
§ 6.1.1)
6. Connect the instrument terminals to the ends of the conductor whose continuity you
want to test (see Fig. 4)
7. If mode "RT+" or "RT-" is selected, use the F3, F4 keys to set the test time.
8. Press the START/STOP key. The instrument carries out the measurement. In "RT+" or
"RT-" mode, press the START/STOP key again to stop the test.
CAUTION
When message "MEASURING…" is displayed, this indicates that the instrument is carrying out the test. Never disconnect the instrument’s leads during this phase.
EN - 11
EQUITEST 5071
A
A
T
"AUTO" mode results
t the end of the test, in case the average value of resistance Ravg measured is lower than 5, the instrument gives out a double sound to
signal the positive result of the test. The
following screen appears on the display:
LOW 30.11.12
1.05
R+ R-
1.07 1.03 219mA 219mA
AUTO 0.11
FUNC CAL
verage value of
resistance Ravg
Value of test current
The results can be saved by pressing the SAVE key twice (see § 7.1).
"RT+" or “RT-" mode results
During the test, an audible beep sounds in case the measured resistance value exceeds
99.9. If, at the end of the test, the maximum RT+ or RT- resistance value measured is lower than 5, the instrument gives out a double sound to
LOW 30.11.12
1.07
RT+ 0.11
FUNC CAL
219mA
IME: 10s
Maximum value of resistance measured during test
Test current Duration of test
signal the positive result of the test. The
following screen appears on the display:
The results can be saved by pressing the SAVE key twice (see § 7.1).
EN - 12
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