HT instruments HT9022 User Manual

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User manual

HT9022

Table of contents:

1. PRECAUTIONS AND SAFETY MEASURES ........................................................................... 3

1.1. Preliminary instructions .................................................................................................................... 4

1.2. During use ........................................................................................................................................ 4

1.3. After use ........................................................................................................................................... 4

1.4. Definition of measurement (overvoltage) category .......................................................................... 5

2. GENERAL DESCRIPTION ....................................................................................................... 6

2.1. Measuring average values and TRMS values ................................................................................. 7

2.2. Definition of true root mean square value and crest factor .............................................................. 7

2.3. Harmonics ........................................................................................................................................ 7

3. PREPARATION FOR USE ....................................................................................................... 8

3.1. Initial checks ..................................................................................................................................... 8

3.2. Instrument power supply .................................................................................................................. 8

3.3. Calibration ........................................................................................................................................ 8

3.4. Storage ............................................................................................................................................. 8

4. OPERATING INSTRUCTIONS ................................................................................................. 9

4.1. Instrument description ...................................................................................................................... 9

4.1.1. Description of the controls ................................................................................................................... 9

4.1.2. Alignment marks.................................................................................................................................. 9

4.1.3. Hand protection ................................................................................................................................. 10

4.1.4. Indication of the conventional direction of Current ............................................................................ 10

4.2. Description of the keys ................................................................................................................... 10

4.2.1. Keys F1 – F2 – F3 – F4 .................................................................................................................... 10

4.2.2. Key H................................................................................................................................................. 10

4.2.3. Key .............................................................................................................................................. 10

4.3. Initial screen ................................................................................................................................... 11

5. INSTRUMENT FUNCTIONS ................................................................................................... 12

5.1. Phase detection .............................................................................................................................. 12

5.2. “Settings” position: Instrument settings .......................................................................................... 12

5.2.1. General.............................................................................................................................................. 12

5.2.2. Date/Time .......................................................................................................................................... 12

5.2.3. Log .................................................................................................................................................... 13

5.2.4. InRush ............................................................................................................................................... 13

5.2.5. Continuity .......................................................................................................................................... 13

5.3. Position “V ”: DC, AC+DC voltage measurement and phase sequence verification ................... 14

5.3.1. DC voltage measurement.................................................................................................................. 14

5.3.1.1. Key F4 “Fnz” .................................................................................................................................... 15

5.3.1.2. Hold ................................................................................................................................................. 15

5.3.1.3. Backlight .......................................................................................................................................... 15

5.3.2. AC+DC voltage and Voltage Harmonics measurement .................................................................... 16

5.3.2.1. Key F2 “Par” .................................................................................................................................... 16

5.3.2.2. AC+DC voltage ................................................................................................................................ 16

5.3.2.2.1. Key F4 “Fnz” in AC+DC voltage measurement ........................................................................... 17

5.3.2.3. Voltage harmonics ........................................................................................................................... 17

5.3.2.3.1. Key F4 “Fnz” in Voltage Harmonics measurement...................................................................... 17

5.3.2.4. Hold ................................................................................................................................................. 18

5.3.2.5. Backlight .......................................................................................................................................... 18

5.3.3. Checking phase sequence and phase concordance with a lead ...................................................... 19

5.3.3.1. Verification of Phase Sequence. ...................................................................................................... 19

5.3.3.2. Verification of Phase Concordance .................................................................................................. 21

5.4. Position “A ”: DC, AC+DC current measurement ........................................................................ 23

5.4.1. DC current measurement .................................................................................................................. 23

5.4.1.1. Key F4 “Fnz” .................................................................................................................................... 24

5.4.1.2. Hold ................................................................................................................................................. 24

5.4.1.3. Backlight .......................................................................................................................................... 24

5.4.2. AC+DC current and Current Harmonics measurement ..................................................................... 25

5.4.2.1. Key F2 “Par” .................................................................................................................................... 25

5.4.2.2. AC+DC current ................................................................................................................................ 25

5.4.2.2.1. Key F4 “Fnz” in AC+DC current measurement ........................................................................... 26

5.4.2.3. Current harmonics ........................................................................................................................... 26

5.4.2.3.1. Key F4 “Fnz” in Current Harmonics measurement ...................................................................... 26

5.4.2.4. Hold ................................................................................................................................................. 27

5.4.2.5. Backlight .......................................................................................................................................... 27

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5.5. Position “W ”: DC, AC+DC power measurement ......................................................................... 28

5.5.1. DC power measurement ................................................................................................................... 29

5.5.1.1. Key F2 “Par” .................................................................................................................................... 29

5.5.1.2. DC power ......................................................................................................................................... 30

5.5.1.2.1. Key F4 “Fnz” in DC Power measurement ................................................................................... 30

5.5.1.3. DC voltage and current .................................................................................................................... 30

5.5.1.3.1. Key F4 “Fnz” in DC Voltage and Current measurement .............................................................. 31

5.5.1.4. DC Energy ....................................................................................................................................... 31

5.5.1.5. Hold ................................................................................................................................................. 31

5.5.1.6. Backlight .......................................................................................................................................... 31

5.5.2. Measurement of AC 1P or AC 3P Powers ........................................................................................ 32

5.5.2.1. Key F2 “Par” .................................................................................................................................... 32

5.5.2.2. AC+DC power .................................................................................................................................. 33

5.5.2.3. Pf and dPf ........................................................................................................................................ 33

5.5.2.3.1. Key F4 “Fnz” in Power or Pf-dPf measurement .......................................................................... 33

5.5.2.4. AC+DC Voltage and Current............................................................................................................ 34

5.5.2.4.1. Key F4 “Fnz” in AC Voltage and Current measurement .............................................................. 34

5.5.2.5. Voltage harmonics ........................................................................................................................... 35

5.5.2.6. Current harmonics ........................................................................................................................... 35

5.5.2.6.1. Key F4 “Fnz” in Voltage and Current Harmonics measurement .................................................. 35

5.5.2.7. AC Energy ....................................................................................................................................... 36

5.5.2.8. Hold ................................................................................................................................................. 36

5.5.2.9. Backlight .......................................................................................................................................... 36

5.6. Position “W ”: Log, On-Line Scope, SnapShot, MemorY, Download .......................................... 37

5.6.1. Key F3 “Sys”...................................................................................................................................... 37

5.6.1.1. “Start Log” recording ........................................................................................................................ 37

5.6.1.2. On-line ............................................................................................................................................. 38

5.6.1.3. Memory ............................................................................................................................................ 39

5.6.1.4. SnapShot ......................................................................................................................................... 39

5.6.1.5. Download ......................................................................................................................................... 40

5.7. Position “Ω ”: Resistance and continuity measurement .............................................................. 41

5.7.1. Key F4 “Fnz”...................................................................................................................................... 42

5.7.1.1. Hold ................................................................................................................................................. 42

5.7.1.2. Backlight .......................................................................................................................................... 42

5.8. Position “InRush A ”: inrush current measurement ..................................................................... 43

5.8.1. Virtual key “Zero” ............................................................................................................................... 44

5.8.2. Key F3 “Run” ..................................................................................................................................... 44

5.8.3. Key F4 “Mem”.................................................................................................................................... 44

6. MAINTENANCE ...................................................................................................................... 46

6.1. General information ........................................................................................................................ 46

6.2. Battery replacement ....................................................................................................................... 46

6.3. Cleaning the instrument ................................................................................................................. 46

6.4. End of life ....................................................................................................................................... 46

7. TECHNICAL SPECIFICATIONS ............................................................................................. 47

7.1. Technical characteristics ................................................................................................................ 47

7.1.1. Safety standards ............................................................................................................................... 49

7.1.2. General characteristics...................................................................................................................... 49

7.2. ENVIRONMENT ............................................................................................................................. 49

7.2.1. Environmental conditions for use ...................................................................................................... 49

7.3. Accessories provided ..................................................................................................................... 49

8. SERVICE ................................................................................................................................ 50

8.1. Warranty conditions ........................................................................................................................ 50

8.2. Service ........................................................................................................................................... 50

9. APPENDIX – THEORETICAL OUTLINE ................................................................................ 51

9.1. Calculation of powers in “AC 1P” mode ......................................................................................... 51

9.2. Calculation of powers in “AC 3P” mode ......................................................................................... 51

9.3. Calculation of powers in “DC” mode .............................................................................................. 51

9.4. voltage and current harmonics ....................................................................................................... 52

9.5. Limit values for harmonics ............................................................................................................. 53

9.6. Causes of the presence of harmonics ............................................................................................ 53

9.7. Consequence of the presence of harmonics ................................................................................. 54

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1. PRECAUTIONS AND SAFETY MEASURES

The instrument has been designed in compliance with directive IEC/EN61010-1 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, with unused measuring probes, circuits, etc.

• Do not carry out any measurement in case you find anomalies in the instrument such

as deformation, breaks, substance leaks, absence of display on the screen, etc.

• Pay special attention when measuring voltages higher than 20V, since a risk of

electrical shock exists.

In this manual, and on the instrument, the following symbols are used:

Warning: observe the instructions given in this manual; an improper use 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

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1.1. PRELIMINARY INSTRUCTIONS

• This clamp has been designed for use in environments of pollution degree 2.

• It can be used for CURRENT and VOLTAGE measurements on installations with

measurement category CAT IV 600V and CAT III 1000V. For a definition of measurement categories, see § 1.4.

• We recommend following the normal safety rules devised by the procedures for

carrying out operations on live systems and using the prescribed PPE to protect the user against dangerous currents and the instrument against incorrect use.

• Only the leads supplied with the instrument guarantee compliance with the safety

standards. They must be in good conditions and replaced with identical models, when necessary.

• In case the lack of warning against the presence of voltage may constitute a danger for

the operator:

1. always carry out a continuity measurement before carrying out the measurement of the live system to confirm the correct connection and condition of the leads;

2. before carrying out the critical measurement, carry out a measurement at a power socket where voltage is surely present. As an alternative, make this verification at your site before going to the unknown measuring point.

• Do not test circuits exceeding the specified current and voltage limits.

• Check that the battery is correctly inserted.

• Before connecting the test leads to the circuit to be tested, make sure that the switch is

correctly set.

• Make sure that the LCD display and the switch indicate the same function.

1.2. DURING USE

Please carefully read the following recommendations and instructions:

WARNING

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 switch, remove the conductor from the clamp jaw or disconnect

the test leads from the circuit under test.

• When the instrument is connected to the circuit under test, do not touch any unused

terminal.

• Keep your hands always under the hand protection. This protection is always located in

a suitable position to guarantee a correct safety distance from possible exposed or live parts (see Fig. 3: hand protection

• Avoid measuring resistance if external voltages are present. Even if the instrument is

protected, excessive voltage could cause a malfunction of the clamp.

• During current measurement, any other current near the clamp may affect

measurement precision.

• When measuring current, always put the conductor as near as possible to the middle of

the clamp jaw, to obtain the most accurate reading.

• While measuring, if the value or the sign of the quantity being measured remain

unchanged, check if the HOLD function is enabled.

1.3. AFTER USE

• When measurement is complete, switch OFF the instrument.

• If the instrument is not to be used for a long time, remove the batteries.

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1.4. DEFINITION OF MEASUREMENT (OVERVOLTAGE) CATEGORY

Standard CEI 61010: Safety requirements for electrical equipment for measurement, control and laboratory use, Part 1: General requirements” defines what measurement category, commonly called overvoltage category, is. In § 6.7.4: Measured circuits, circuits are divided into the following measurement categories:

(OMISSIS)

• 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 on installations 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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HT9022

2. GENERAL DESCRIPTION

The clamp meter HT9022 carries out the following measurements:

• DC voltage and AC+CD TRMS voltage

• DC current and AC+CD TRMS current

• Phase sequence

• Active, reactive, apparent power and power factor on single-phase and/or balanced

three phase systems

• Active, reactive, apparent energy on single-phase and/or balanced three-phase

systems

• AC voltage harmonics (1st – 25th) and THD% up to 75Hz (1st – 8th above 75Hz)

• AC current harmonics (1st – 25th) and THD% up to 75Hz (1st – 8th above 75Hz)

• DC power

• Frequency on voltage (leads) and current (clamp jaw)

• Resistance and continuity test with buzzer

• Electric motor starting currents (INRUSH)

• Detection of presence of AC voltage with and without contact with in-built sensor in the

clamp jaw

Each of these functions can be selected using the 7-position selector switch, including an OFF position.

Keys F1, F2, F3, F4 e H / are also provided; for their use, please refer to § 4.2.

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2.1. MEASURING AVERAGE VALUES AND TRMS VALUES

Measuring instruments of alternating quantities are divided into two big families:

• AVERAGE-VALUE meters: instruments measuring the value of the sole wave at fundamental frequency from 10 to 400Hz

• TRMS (True Root Mean Square) VALUE meters: instruments measuring the TRMS value of the quantity being tested.

In the presence of a perfectly sinusoidal wave, the two families of instruments provide identical results. In the presence of distorted waves, instead, the readings shall differ. Average-value meters provide the RMS value of the sole fundamental wave, TRSM meters, instead, provide the RMS value of the whole wave, including harmonics (within the instrument’s bandwidth). Therefore, by measuring the same quantity with instruments from both families, the values obtained are identical only if the wave is perfectly sinusoidal. In case it is distorted, TRMS meters shall provide higher values than the values read by average-value meters.

2.2. DEFINITION OF TRUE ROOT MEAN SQUARE VALUE AND CREST FACTOR

The root mean square value of current is defined as follows: "In a time equal to a period, an alternating current with a root mean square value of the intensity of 1A, circulating on a resistor, dissipates the same energy that, during the same time, would have been dissipated by a direct current with the intensity of 1A". This definition results in the numeric

expression:

+Tt

∫

dttg

)(

The root mean square value is indicated with the acronym RMS.

The Crest Factor is defined as the relationship between the Peak Value of a signal and its

RMS value: CF (G)=

RMS

This value changes with the signal waveform, for a purely sinusoidal wave it is

2 =1.41.

In case of distortion, the Crest Factor takes higher values as wave distortion increases.

2.3. HARMONICS

See Appendix (Par.9.4)

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HT9022

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 generally checking the instrument in order to detect possible damage suffered during transport. In case anomalies are found, immediately contact the forwarding agent.

We also recommend checking that the packaging contains all components indicated in paragraph 7.3. In case of discrepancy, please contact the Dealer.

In case the instrument should be replaced, please carefully follow the instructions given in chapter 8.2.

3.2. INSTRUMENT POWER SUPPLY

The instrument is supplied by two 1.5V LR03 AAA UM-4 batteries. Battery charge duration is approximately 54 hours of continuous use in Power mode (selector switch to “W ”).

Replace them following the instructions in paragraph 5.2.

3.3. CALIBRATION

The instrument has the technical specifications described in this manual. The instrument’s performance is guaranteed for one year.

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 the environmental specifications contained in 6.2.1 before use).

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4. OPERATING INSTRUCTIONS

4.1. INSTRUMENT DESCRIPTION

4.1.1. Description of the controls

CAPTION:

1. Inductive clamp jaw

2. AC voltage indicator LED

3. Jaw trigger

4. Rotary selector switch

5. Key H / backlight

6. Function keys F1 – F2 – F3 – F4

7. LCD display

8. Input terminal VΩ

9. Input terminal COM

Fig. 1: Instrument description

4.1.2. Alignment marks

Put the conductor as close as possible to the middle of the jaws on the intersection of the indicated marks (see Fig. 2) in order to meet the meter accuracy specifications.

CAPTION:

1. Alignment marks

2. Conductor

Fig. 2: alignment marks

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4.1.3. Hand protection

CAPTION:

1. Hand protection

2. Safe area

Fig. 3: hand protection

Always keep your hands under the hand protection. This protection is always located in a suitable position to guarantee a correct safety distance from possible exposed or live parts (see Fig. 3)

4.1.4. Indication of the conventional direction of Current

The photo in Fig. 4: current direction arrow shows an arrow which indicates the conventional direction of current.

Fig. 4: current direction arrow

4.2. DESCRIPTION OF THE KEYS

4.2.1. Keys F1 – F2 – F3 – F4

Keys F1 - F2 - F3 - F4 take different functions according to the measure set (for detailed

information, see the single functions).

4.2.2. Key H

Short pressing key “H” activates the function Data HOLD, i.e. the value of the measures quantity is frozen. The symbol "H" is displayed when this function is enabled. This operating mode is disabled when key “H” is pressed again or the switch is operated.

4.2.3. Key

To improve the readability of the values measured in dark places, the display has been provided with a backlighting function (backlight), which is turned on and off by long-

pressing key “H”. This function automatically deactivates after approximately 10 seconds

after being activated, in order not to discharge the battery.

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4.3. INITIAL SCREEN

HT9022

When switching on the instrument, the initial screen appears for a few seconds. It shows:

• the instrument model;

• the serial number of the instrument;

• the firmware version in the instrument’s memory.

Sn 10120020

V. 2.00

Please note down this information, especially the firmware version, in case it should be necessary to contact the Service Department.

After a few seconds, the instrument switches to the selected function.

WARNING

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5. INSTRUMENT FUNCTIONS

5.1. PHASE DETECTION

With the selector switch set to “V ” (Voltage measurement) or “A ” (Current measurement), by taking the end of the clamp jaw near an AC source, the red LED at the base of the clamp jaw will turn on (see Fig. 1 – part 2), which indicates that current is present.

WARNING

Phase detection is not active when the clamp selector switch is set to “OFF”, “SETTINGS”, “W ”, “Ω ”,“InRush A ”.

5.2. “SETTINGS” POSITION: INSTRUMENT SETTINGS

By positioning the selector switch to “Settings”, the screen aside

will appear, containing the possible settings of the instrument.

Press keys F2, F3 (T, S) to move the cursor and key F4 (OK)

to confirm the selected item.

General

Date/Time

▼ ▲

Log InRush Continuity

19/01-17:00:00

5.2.1. General

By selecting “General”, the screen to the side will appear. Press key F1 (Sel) to move the cursor and keys F2, F3 (T, S)

to change the selected item.

Press key F4 (OK) to save the changes made and go back to

the previous screen (see par.5.2).

• Language: the language of the clamp may be chosen

among: Italian, English, Spanish. German, Swedish, Danish,

Sel

Language: Italian Auto-Off: OFF

▼ ▲

Norwegian, French, Dutch, Portuguese, Finnish and Polish.

19/01-17:00:00

• Auto-Off: the auto power off of the clamp may be set to ON or OFF. If set to ON, the

clamp will switch off after 5 minutes after it is last used.

5.2.2. Date/Time

By selecting “Date/Time”, the screen to the side will appear. Press key F1 (Sel) to move the cursor and keys F2, F3 (T, S)

to change the selected item. Item “Format” allows selecting the date and time format between EU (European) or USA (American).

Press key F4 (OK) to save the changes made and go back to

the previous screen (see par.5.2).

Sel

Year: 11 Month: 01 Day: 19 Hour: 17 Minute: 00 Format: EU

19/01-17:00:00

▼ ▲

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5.2.3. Log

▼ ▲

By selecting “Log”, the screen to the side will appear. Press keys F2, F3 (T, S) to change the duration of the

integration period. It will take the following values: 1, 5, 10, 30, 60, 120, 300, 600 or 900 seconds.

Press key F4 (OK) to save the changes made and go back to

the previous screen (see par.5.2).

Int.Period:

001 s

19/01-17:00:00

5.2.4. InRush

By selecting “InRush”, the screen to the side will appear. Press key F1 (Sel) to move the cursor and keys F2, F3 (T, S)

to change the selected item.

Press key F4 (OK) to save the changes made and go back to

the previous screen (see par.5.2).

• Thresh: threshold value beyond which the inrush current

event is detected and recorded by the instrument. The current value may be set between 5A and 900A in steps of 1A.

Sel

Thres: 080 Window: 1/1 Mode: Fix

19/01-17:00:00

▼ ▲

• Window: the value of the inrush current measuring window. The following values are

available:

¾ 1/1: sampling occurs every half-period; ¾ 1/2: sampling occurs one every two half-periods; ¾ 1/4: sampling occurs one every four half-periods;

• Mode: the inrush current measuring mode. Following modes are available:

¾ Fix; ¾ Var.

For details about the measurement of Inrush Currents see par. 5.8.2.

5.2.5. Continuity

Sel

▼ ▲

By selecting “Continuity”, the screen to the side will appear. Press keys F2, F3 (T, S) to change the setting of the resistance

limit value below which the buzzer will sound. It may be set between 1Ω and 150Ω in steps of 1Ω.

Press key F4 (OK) to save the changes made and go back to

the previous screen (see par.5.2).

EN - 13

Res Lim:

010 Ω

19/01-17:00:00

HT9022

5.3. POSITION “V ”: DC, AC+DC VOLTAGE MEASUREMENT AND PHASE SEQUENCE VERIFICATION

WARNING

The maximum DC or AC+DC input voltage is 1000V. When the display shows “> 999.9V”, it means that the maximum value the clamp is able to measure has been exceeded. Exceeding these limits could result in electrical shocks to the user and damage to the instrument.

Mod Par Fnz

AC <10.0 Hz

By positioning the selector switch to “V ”, the screen to the side

will appear.

---- V

Press key F1 (Mod) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F1, the

cursor will scroll through the available items, as follows:

• AC: AC+DC voltage measurement;

• DC: DC voltage measurement;

• Ph Seq: verification of phase sequence;

• Help: it displays the connection diagram of the instrument to

the system;

Select the desired mode and press key F4 (OK) to confirm.

5.3.1. DC voltage measurement

19/01-17:00:00

Mod Par OK

AC <10.0 Hz

Ph Seq Help

---- V

Esc

19/01-17:00:00

Fig. 5: DC voltage measurement

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HT9022

Insert the red cable into the input lead VΩ and the black cable into the input lead COM

(Fig. 5), and position the leads to the desired points of the circuit being tested.

Mod Par Fnz

The screen shows an example of DC Voltage measurement.

12.0 V

5.3.1.1. Key F4 “Fnz”

Press key F4 (Fnz) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F4, the

cursor will scroll through the available items, as follows:

• Max: it constantly displays the maximum value of the

measured DC Voltage;

• Min: it constantly displays the minimum value of the

measured DC Voltage;

• Cr+: it constantly displays the maximum positive crest value;

• Cr-: it constantly displays the minimum negative crest value;

• Rst: it deletes all stored Max, Min, Cr+ and Cr- values;

• Esc: it goes back to a normal measuring mode.

WARNING

Note: the measurement of the 4 Max, Min, Cr+ and Cr- values is simultaneous, regardless of the one displayed.

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

19/01-17:00:00

Mod Par OK Fnz

12.0 V

Max

Min Cr+ CrRst Esc

19/01-17:00:00

Mod Par Fnz

Max DC

12.0 V

19/01-17:00:00

5.3.1.2. Hold

Short pressing key “H” activates the function Data HOLD. The display shows the message

“H” and the screen of the measurement in progress is “frozen”.

This operating mode is deactivated when key “H” is pressed again or the switch is

operated.

5.3.1.3. Backlight

Long pressing key “H” activates or deactivates the display backlight. This function

automatically deactivates after approximately 10 seconds after being activated, in order not to discharge the batteries.

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HT9022

5.3.2. AC+DC voltage and Voltage Harmonics measurement

Fig. 6: AC+DC voltage measurement

Insert the red cable into the input lead VΩ and the black cable into the input lead COM,

and position the leads to the desired points of the circuit being tested (Fig. 6). The voltage and frequency value is shown on the display.

5.3.2.1. Key F2 “Par”

Press key F2 (Par) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F2, the

cursor will scroll through the available items, as follows:

• Voltage: it shows the measured Voltage value;

• Voltage Har: it shows the measured Voltage harmonics;

Mod

AC 50.0 Hz

220.5 V

Par OK

Voltage

Voltage Har

Esc

• Esc: it closes the drop-down menu.

Select the desired parameter and press key F4 (OK) to confirm.

19/01-17:00:00

5.3.2.2. AC+DC voltage

Mod Par Fnz

AC 50.0 Hz

The screen shows an example of AC+DC Voltage measurement.

220.5 V

19/01-17:00:00

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HT9022

5.3.2.2.1. Key F4 “Fnz” in AC+DC voltage measurement

While measuring AC+DC voltage, press key F4 (Fnz) to open

the drop-down menu shown on the screen to the side. At each

subsequent pressure of key F4, the cursor will scroll through the

available items, as follows:

• Max: it constantly displays the maximum RMS value of

Voltage;

Mod Par OK Fnz

AC 50.0 Hz

220.5 V

Max

Min Cr+ CrRst Esc

• Min: it constantly displays the minimum RMS value of

Voltage;

19/01-17:00:00

• Cr+: it constantly displays the maximum positive crest value;

• Cr-: it constantly displays the minimum negative crest value;

• Rst: it deletes all stored Max, Min, Cr+ and Cr- values;

• Esc: it goes back to a normal measuring mode.

Mod Par Fnz

Max AC 50.0 Hz

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

220.5 V

5.3.2.3. Voltage harmonics

The screen shows an example of Voltage Harmonics measurement.

By pressing keys F1 (◄) or F3 (►), it is possible to move the

cursor over the graph and to select the harmonic to be measured. It is possible to measure up to the 25th harmonic, for fundamental frequencies between 10Hz and 75Hz, and up to the

harmonic for fundamental frequencies between 75Hz and

8 400Hz.

5.3.2.3.1. Key F4 “Fnz” in Voltage Harmonics measurement

While measuring Voltage Harmonics, press key F4 (Fnz) to

open the drop-down menu shown on the screen to the side. At

each subsequent pressure of key F4, the cursor will scroll

through the available items, as follows:

• Max: it constantly displays the maximum RMS value of the

selected current harmonic;

• Min: it constantly displays the minimum RMS value of the

selected current harmonic;

• Abs: it displays the absolute value of the harmonics in Volts;

19/01-17:00:00

◄

Par

►

Fnz

H01 215.0 V ThdV 10.0 %

19/01-17:00:00

◄

H01 215.0 V ThdV 10.0 %

19/01-17:00:00

Par OK Fnz

Max

Min Abs % Rst Esc

EN - 17

HT9022

• %: it displays the value of the harmonics as percentage value with respect to the

fundamental;

• Rst: it deletes all stored Max, Min values;

• Esc: it goes back to a normal measuring mode.

Note: since the menu contains functions with a different meaning (Max-Min and Abs-%), it is necessary to enter the menu twice: once for displaying Abs or % values and another time to enable the Max or Min functions.

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

◄

Par

H01 215.0 V

►

Fnz

ThdV 10.0 %

Max

5.3.2.4. Hold

Short pressing key “H” activates the function Data HOLD. The display shows the message

“H” and the screen of the measurement in progress is “frozen”.

This operating mode is deactivated when key “H” is pressed again or the switch is

operated.

5.3.2.5. Backlight

Long pressing key “H” activates or deactivates the display backlight. This function

automatically deactivates after approximately 10 seconds after being activated, in order not to discharge the batteries.

19/01-17:00:00

EN - 18

HT9022

5.3.3. Checking phase sequence and phase concordance with a lead

While measuring, the instrument must be held in the operator’s hand.

WARNING

Mod Par Ok

AC <10.0 Hz

Press key F1 (Mod) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F1 (Mod), the cursor will scroll through the available items. Select

DC Ph Seq Help

---- V

Esc

“Ph Seq” and press key F4 (OK) to confirm the selected item.

5.3.3.1. Verification of Phase Sequence.

19/01-17:00:00

Fig. 7: verification of phase sequence

1. The instrument shows the screen here to the side, and waits

for the detection of phase L1.

2. Insert the red cable into input terminal VΩ and connect the

red lead to phase L1 (Fig. 7).

EN - 19

Mod Go

Ph Seq

PH1

Wait

19/01-17:00:00

HT9022

WARNING

If the frequency of the measured voltage is lower than 40Hz or higher than 70Hz, the display shows the message “F<40 Hz” or “F>70 Hz” and phase detection does not start.

Mod Go

Ph Seq

3. When a voltage higher than or equal to 100V is detected, the

instrument gives an acoustic signal (buzzer) and the

message “Meas” is shown on the display. Do not press any

key and keep the test lead connected to L1 phase cable.

PH1

Meas

19/01-17:00:00

Mod Go

Ph Seq

4. Once phase L1 acquisition is complete, the displays shows

the screen here to the side. Disconnect the test lead from phase L1 cable.

Discon.

Wait

19/01-17:00:00

Mod Go

Ph Seq

5. The instrument shows the screen here to the side, and waits

for the detection of phase L2. Connect the test lead to phase L2 cable.

PH2

Wait

WARNING

19/01-17:00:00

If more than 3 seconds elapse before detecting phase L2, the instrument

displays the message “Time Out”.

It is necessary to repeat the measuring cycle from the beginning, by

6. When a voltage higher than or equal to 100V is detected, the

instrument gives an acoustic signal (buzzer) and the

message “Meas” is shown on the display. Do not press any

key and keep the test lead connected to L2 phase cable.

pressing key F4 (Go) and starting from step 1 again.

Mod Go

Ph Seq

PH2

Meas

19/01-17:00:00

EN - 20

HT9022

Mod Go

7. If the two phases, to which the test lead has been connected,

are in the correct sequence, the instrument displays the screen here to the side. Should the phase sequence be

incorrect, the display shows “132”. To start a new measurement, press key F4 (Go).

Ph Seq

123

19/01-17:00:00

5.3.3.2. Verification of Phase Concordance

Fig. 8: verification of Phase Concordance

1. The instrument shows the screen here to the side, and waits

for the detection of phase L1.

2. Insert the red cable into input terminal VΩ and connect the

red lead to phase L1 of the first sequence (Fig. 8).

EN - 21

Mod Go

Ph Seq

PH1

Wait

19/01-17:00:00

HT9022

Mod Go

Ph Seq

3. When a voltage higher than or equal to 100V is detected, the

instrument gives an acoustic signal (buzzer) and the

message “Meas” is shown on the display. Do not press any

key and keep the test lead connected to L1 phase cable.

PH1

Meas

19/01-17:00:00

Mod Go

Ph Seq

4. Once phase L1 acquisition is complete, the displays shows

the screen here to the side. Disconnect the test lead from phase L1 cable.

Discon.

Wait

19/01-17:00:00

Mod Go

Ph Seq

5. The instrument shows the screen here to the side, and waits

for the detection of the second sequence of phase L1. Connect the test lead to phase L1 of the second sequence.

PH2

Wait

WARNING

19/01-17:00:00

If more than 3 seconds elapse before detecting the phase L1 of the second

sequence, the instrument displays the message “Time Out”.

It is necessary to repeat the measuring cycle from the beginning, by

pressing key F4 (Go) and starting from step 1 again.

Mod Go

Ph Seq

6. When a voltage higher than or equal to 100V is detected, the

instrument gives an acoustic signal (buzzer) and the

message “Meas” is shown on the display. Do not press any

key and keep the test lead connected to L1 phase cable of the second sequence.

PH2

Meas

19/01-17:00:00

Mod Go

Ph Seq

7. If there is concordance between the two phases, to which the

test lead has been connected, the instrument displays the

screen here to the side. Otherwise, it displays “123” or “132”. To start a new measurement, press key F4 (Go).

11-

19/01-17:00:00

EN - 22

HT9022

5.4. POSITION “A ”: DC, AC+DC CURRENT MEASUREMENT

WARNING

The maximum measurable DC or AC+DC current is 1000A. When the display shows “> 999.9A”, it means that the maximum value the clamp is able to measure has been exceeded. Exceeding these limits could result in electrical shocks to the user and damage to the instrument. We recommend holding the clamp respecting the safety area created by the hand protection (see Fig. 3)

Mod Par Fnz

AC <10.0 Hz

By positioning the selector switch to “A ”, the screen to the side

will appear.

---- A

Press key F1 (Mod) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F1, the

cursor will scroll through the available items, as follows:

• AC: AC+DC voltage measurement;

• DC: DC voltage measurement;

• Help: it displays the connection between instrument and

system;

• Esc: it closes the drop-down menu.

Select the desired mode and press key F4 (OK) to confirm.

5.4.1. DC current measurement

19/01-17:00:00

Mod Par OK

AC <10.0 Hz

Help Esc

---- A

19/01-17:00:00

Fig. 9: DC current measurement

WARNING

Insert the cable in the middle of the clamp jaws, in order to obtain accurate measures. Use the marks as a reference (see Fig. 2).

EN - 23

HT9022

Mod Par Fnz

The screen shows an example of DC current measurement.

100.0 A

5.4.1.1. Key F4 “Fnz”

Press key F4 (Fnz) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F4, the

cursor will scroll through the available items, as follows:

• Max: it constantly displays the maximum value of DC current;

• Min: it constantly displays the minimum selected value of DC

current;

• Cr+: it constantly displays the maximum positive crest value;

• Cr-: it constantly displays the minimum negative crest value;

• Zero: it zeroes the measured DC current;

• Rst: it deletes all stored Max, Min, Cr+ and Cr- values;

• Esc: it goes back to a normal measuring mode.

WARNING

Note:

• carry out current zeroing before clamping the conductor;

• the measurement of the 4 Max, Min, Cr+ and Cr- values is simultaneous,

regardless of the one displayed.

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

19/01-17:00:00

Mod Par OK Fnz

100.0 A

Max

Min Cr+ CrZero Rst Esc

19/01-17:00:00

Mod Par Fnz

Max DC

100.0 A

19/01-17:00:00

5.4.1.2. Hold

Short pressing key “H” activates the function Data HOLD. The display shows the message

“H” and the screen of the measurement in progress is “frozen”.

This operating mode is deactivated when key “H” is pressed again or the switch is

operated.

5.4.1.3. Backlight

Long pressing key “H” activates or deactivates the display backlight. This function

automatically deactivates after approximately 10 seconds after being activated, in order not to discharge the batteries.

EN - 24

HT9022

5.4.2. AC+DC current and Current Harmonics measurement

Fig. 10: AC+DC current measurement

WARNING

Insert the cable in the middle of the clamp jaws, in order to obtain accurate measures. Use the marks as a reference (see Fig. 2).

5.4.2.1. Key F2 “Par”

Mod Par OK

Press key F2 (Par) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F2, the

cursor will scroll through the available items, as follows:

• Current: it shows the measured current value;

AC 50.0 Hz

Current

Current Har

Esc

100.0 A

• Current Har: it shows the measured Current harmonics;

• Esc: it closes the drop-down menu.

Select the desired parameter and press key F4 (OK) to confirm.

19/01-17:00:00

5.4.2.2. AC+DC current

Mod Par Fnz

AC 50.0 Hz

The screen shows an example of AC+DC current measurement.

100.0 A

EN - 25

19/01-17:00:00

HT9022

5.4.2.2.1. Key F4 “Fnz” in AC+DC current measurement

While measuring Current, press key F4 (Fnz) to open the drop-

down menu shown on the screen to the side. At each

subsequent pressure of key F4, the cursor will scroll through the

available items, as follows:

• Max: it constantly displays the maximum RMS value of

current;

• Min: it constantly displays the minimum RMS value of

current;

Mod Par OK Fnz

AC 50.0 Hz

100.0 A

Max

Min Cr+ CrZero Rst Esc

19/01-17:00:00

• Cr+: it constantly displays the maximum positive crest value;

• Cr-: it constantly displays the minimum negative crest value;

• Zero: it zeroes the average value of the measured current;

• Rst: it deletes all stored Max, Min, Cr+ and Cr- values;

• Esc: it goes back to a normal measuring mode.

Note: carry out current zeroing before clamping the conductor.

WARNING

Mod Par Fnz

Max AC 50.0 Hz

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

100.0 A

5.4.2.3. Current harmonics

The screen shows an example of Current Harmonics measurement.

By pressing keys F1 (◄) or F3 (►), it is possible to move the

cursor over the graph and to select the harmonic to be measured. It is possible to measure up to the 25th harmonic, for fundamental frequencies between 10Hz and 75Hz, and up to the

harmonic for fundamental frequencies between 75Hz and

400Hz.

5.4.2.3.1. Key F4 “Fnz” in Current Harmonics measurement

While measuring Current Harmonics, press key F4 (Fnz) to

open the drop-down menu shown on the screen to the side. At

each subsequent pressure of key F4, the cursor will scroll

through the available items, as follows:

• Max: it constantly displays the maximum RMS value of the

selected current harmonic;

• Min: it constantly displays the minimum RMS value of the

selected current harmonic;

• Abs: it displays the value of the harmonics in Amperes;

19/01-17:00:00

◄

Par

►

Fnz

H01 100.0 A ThdI 10.0 %

19/01-17:00:00

◄

H01 100.0 A ThdI 10.0 %

19/01-17:00:00

Par OK Fnz

Max

Min Abs % Rst Esc

EN - 26

HT9022

• %: it displays the value of the harmonics as percentage value with respect to the

fundamental;

• Rst: it deletes all stored Max and Min values;

• Esc: it goes back to a normal measuring mode.

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

◄

Par

H01 100.0 A

►

Fnz

ThdI 10.0 %

Max

5.4.2.4. Hold

Short pressing key “H” activates the function Data HOLD. The display shows the message

“H” and the screen of the measurement in progress is “frozen”.

This operating mode is deactivated when key “H” is pressed again or the switch is

operated.

5.4.2.5. Backlight

Long pressing key “H” activates or deactivates the display backlight. This function

automatically deactivates after approximately 10 seconds after being activated, in order not to discharge the batteries.

19/01-17:00:00

EN - 27

HT9022

5.5. POSITION “W ”: DC, AC+DC POWER MEASUREMENT

WARNING

The maximum DC or AC+DC input voltage is 1000V and the maximum measurable DC or AC+DC current is 1000A. Do not measure voltages and currents exceeding the limits given in this manual. Exceeding these limits could result in electrical shocks to the user and damage to the instrument. We recommend holding the clamp respecting the safety area created by the hand protection (see Fig. 3)

Mod Par Sys Fnz

AC <10.0 Hz

---- kW

By positioning the selector switch to “W ”, the screen to the

side will appear.

---- kVari

---- kVA

Press key F1 (Mod) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F1, the

cursor will scroll through the available items, as follows:

• AC 1P: measurement of AC Powers on single-phase system;

• AC 3P: measurement of AC Powers on three-phase

balanced system;

• DC: DC Power measurement;

• Help: it displays the connection between instrument and

system;

• Esc: it closes the drop-down menu.

Select the desired measuring mode and press key F4 (OK) to confirm.

See par.9.1, 9.2 and 9.3 for details about calculation formulas.

19/01-17:00:00

Mod Par Sys OK

AC <10.0 Hz

AC 1P AC 3P

---- kW

Help

---- kVari

Esc

---- kVA

19/01-17:00:00

EN - 28

HT9022

5.5.1. DC power measurement

Fig. 11: DC power measurement

Insert the red cable into input lead VΩ and the black cable into input lead COM.

Position the red lead to “+” and the black lead to “-” and insert the “+” cable into the clamp jaws, respecting the direction of current indicated by the arrow (see Fig. 4)

ATTENZIONE

Insert the cable in the middle of the clamp jaws, in order to obtain accurate measures. Use the marks as a reference (see Fig. 2).

5.5.1.1. Key F2 “Par”

Press key F2 (Par) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F2, the

cursor will scroll through the available items, as follows:

• Power: it shows the measured Power value;

• Volt-Curr: it displays the measured Voltage and Current

Mod Par Sys OK

0.40 kW

Power

Volt-Curr Energy Esc

values;

• Energy: it shows the measured energy value. This

measurement is only active when a recording is active (see par. 5.6.1.1).

19/01-17:00:00

• Esc: it closes the drop-down menu.

Select the desired parameter and press key F4 (OK) to confirm.

EN - 29

HT9022

5.5.1.2. DC power

Mod Par Sys Fnz

The screen to the side shows an example of DC power measurement.

0.40 kW

5.5.1.2.1. Key F4 “Fnz” in DC Power measurement

While measuring DC Power, press key F4 (Fnz) to open the

drop-down menu shown on the screen to the side. At each

subsequent pressure of key F4, the cursor will scroll through the

available items, as follows:

• Max: it constantly displays the maximum value of the

measured parameter;

• Min: it constantly displays the minimum value of the

measured parameter;

• Rst: it deletes all stored Max and Min values;

• Esc: it goes back to a normal measuring mode.

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

19/01-17:00:00

Mod Par OK Fnz

0.40 kW

19/01-17:00:00

Max

Min Rst Esc

Mod Par Sys Fnz

Max DC

0.40 kW

5.5.1.3. DC voltage and current

The screen shows an example of DC Voltage and Current measurement.

19/01-17:00:00

Mod Par Sys Fnz

80.0 V

20.0 A

19/01-17:00:00

EN - 30

HT9022

5.5.1.3.1. Key F4 “Fnz” in DC Voltage and Current measurement

While measuring Voltage and Current, press key F4 (Fnz) to

open the drop-down menu shown on the screen to the side. At

each subsequent pressure of key F4, the cursor will scroll

through the available items, as follows:

• Max: it constantly displays the maximum value of the

measured parameter;

• Min: it constantly displays the minimum value of the

Mod Par OK Fnz

80.0 V

20.0 A

Max

Min Cr+ CrZero Rst Esc

measured parameter;

• Cr+: it constantly displays the maximum positive crest value

19/01-17:00:00

measured;

• Cr-: it constantly displays the minimum negative crest value measured;

• Zero: it zeroes the measured DC current;

• Rst: it deletes all stored Max, Min, Cr+ and Cr- values;

• Esc: it goes back to a normal measuring mode.

Note: carry out current zeroing before clamping the conductor.

WARNING

Mod Par Sys Fnz

Max DC

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

80.0 V

20.0 A

19/01-17:00:00

5.5.1.4. DC Energy

The screen shows an example of DC Energy measurement.

Mod Par Sys Fnz

2.20 kWh

Log

5.5.1.5. Hold

Short pressing key “H” activates the function Data HOLD. The display shows the message

“H” and the screen of the measurement in progress is “frozen”.

This operating mode is deactivated when key “H” is pressed again or the switch is

operated.

5.5.1.6. Backlight

Long pressing key “H” activates or deactivates the display backlight. This function

automatically deactivates after approximately 10 seconds after being activated, in order not to discharge the batteries.

19/01-17:00:00

EN - 31

HT9022

5.5.2. Measurement of AC 1P or AC 3P Powers

Fig. 12: measurement of AC 1P or AC 3P Powers

Insert the red cable into the input lead VΩ and the black cable into the input lead COM,

and connect the instrument as described in Fig. 12.

WARNING

Insert the cable in the middle of the clamp jaws, in order to obtain accurate measures. Use the marks as a reference (see Fig. 2).

5.5.2.1. Key F2 “Par”

Press key F2 (Par) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F2, the

cursor will scroll through the available items, as follows:

• P-Q-S: it displays the measured values of Active, Reactive

and Apparent Power;

• Pf-dPf: it displays the measured values of Power Factor and

Cosphi;

• Voltage Harm: it shows the measured Voltage Harmonics;

• Current Harm: it shows the measured Current Harmonics;

Mod Par Sys OK

---- kW

P-Q-S

AC <10.0 Hz

Pf-dPf Volt-Curr Voltage Har

---- kVari

---- kVA

19/01-17:00:00

Current Har Energy Esc

• Energy: it shows the measured energy value. This measurement is only active when a

recording is active (see par. 5.6.1.1).

• Esc: it closes the drop-down menu.

Select the desired parameter and press key F4 (OK) to confirm.

EN - 32

HT9022

5.5.2.2. AC+DC power

The screen shows an example of AC+DC Power measurement.

Mod Par Sys Fnz

AC 50.0 Hz

21.47 kW

7.68 kVari

22.90 kVA

19/01-17:00:00

5.5.2.3. Pf and dPf

The screen shows an example of Power Factor and Cosphi measurement.

Mod Par Sys Fnz

AC 50.0 Hz

Pf 0.94 i dPf 0.94 i

5.5.2.3.1. Key F4 “Fnz” in Power or Pf-dPf measurement

While measuring Power or Pf-dPf, press key F4 (Fnz) to open

the drop-down menu shown on the screen to the side. At each

subsequent pressure of key F4, the cursor will scroll through the

available items, as follows:

• Max: it constantly displays the maximum value of the

measured parameter;

• Min: it constantly displays the minimum value of the

measured parameter;

• Rst: it deletes all stored Max and Min values;

• Esc: it goes back to a normal measuring mode.

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

19/01-17:00:00

Mod Par OK Fnz

AC 50.0 Hz

21.47 kW

7.68 kVari

Max

Min Rst Esc

22.90 kVA

19/01-17:00:00

Mod Par Sys Fnz

Max AC 50.0 Hz

21.47 kW

7.68 kVari

22.90 kVA

19/01-17:00:00

EN - 33

HT9022

5.5.2.4. AC+DC Voltage and Current

The screen shows an example of AC+DC Voltage and Current measurement.

Mod Par Sys Fnz

AC 50.0 Hz

229.7 V

99.6 A

5.5.2.4.1. Key F4 “Fnz” in AC Voltage and Current measurement

While measuring Voltage and Current, press key F4 (Fnz) to

open the drop-down menu shown on the screen to the side. At

each subsequent pressure of key F4, the cursor will scroll

through the available items, as follows:

• Max: it constantly displays the maximum value of the

measured parameter;

• Min: it constantly displays the minimum value of the

measured parameter;

• Cr+: it constantly displays the maximum positive crest value

measured;

• Cr-: it constantly displays the minimum negative crest value measured;

• Zero: it zeroes the average value of the measured current;

• Rst: it deletes all stored Max, Min, Cr+ and Cr- values;

• Esc: it goes back to a normal measuring mode.

Note: carry out current zeroing before clamping the conductor.

WARNING

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

19/01-17:00:00

Mod Par OK Fnz

AC 50.0 Hz

229.7 V

99.6 A

Max

Min Cr+ CrZero Rst Esc

19/01-17:00:00

Mod Par Sys Fnz

Max AC 50.0 Hz

229.7 V

99.6 A

19/01-17:00:00

EN - 34

HT9022

5.5.2.5. Voltage harmonics

The screen shows an example of Voltage Harmonics measurement.

By pressing keys F1 (◄) or F3 (►), it is possible to move the

cursor over the graph and to select the harmonic to be measured. It is possible to measure up to the 25th harmonic, for fundamental frequencies between 10Hz and 75Hz, and up to the

◄

Par

H05 2.3 V ThdV 2.4 %

►

Fnz

8th harmonic for fundamental frequencies between 75Hz and 400Hz.

19/01-17:00:00

5.5.2.6. Current harmonics

The screen shows an example of Current Harmonics measurement.

By pressing keys F1 (◄) or F3 (►), it is possible to move the

cursor over the graph and to select the harmonic to be measured.

It is possible to measure up to the 25

harmonic, for

fundamental frequencies between 10Hz and 75Hz, and up to the

harmonic for fundamental frequencies between 75Hz and

400Hz.

◄

Par

H05 2.9 A ThdI 10.7 %

19/01-17:00:00

►

Fnz

5.5.2.6.1. Key F4 “Fnz” in Voltage and Current Harmonics measurement

While measuring Voltage or Current Harmonics, press key F4 (Fnz) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F4, the cursor will

scroll through the available items, as follows:

• Max: it constantly displays the maximum RMS value of the

selected current or voltage harmonic;

• Min: it constantly displays the minimum RMS value of the

◄

H01 100.0 A ThdI 10.0 %

Par OK Fnz

Max

Min Abs % Rst Esc

selected current or voltage harmonic;

• Abs: it displays the value of the harmonics in Amperes or

19/01-17:00:00

Volts;

• %: it displays the value of the harmonics as percentage value with respect to the

fundamental;

• Rst: it deletes all stored Max and Min values;

• Esc: it goes back to a normal measuring mode.

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

◄

H01 100.0 A

Par

►

Fnz

ThdI 10.0 %

Max

19/01-17:00:00

EN - 35

HT9022

5.5.2.7. AC Energy

The screen shows an example of AC Energy measurement. The values of Active Energy, Reactive Energy, Inductive Energy and Capacitive Reactive Energy are shown.

Mod Par Sys Fnz

AC 50.0 Hz

2.24 kWh

0.84 kVarih

0.00 kVarch

Log 1P

5.5.2.8. Hold

Short pressing key “H” activates the function Data HOLD. The display shows the message

“H” and the screen of the measurement in progress is “frozen”.

This operating mode is deactivated when key “H” is pressed again or the switch is

operated.

5.5.2.9. Backlight

Long pressing key “H” activates or deactivates the display backlight. This function

automatically deactivates after approximately 10 seconds after being activated, in order not to discharge the batteries.

19/01-17:00:00

EN - 36

HT9022

5.6. POSITION “W ”: LOG, ON-LINE SCOPE, SNAPSHOT, MEMORY, DOWNLOAD

WARNING

Turn the rotary switch to “W ”. Insert the red cable into the input lead VΩ and the black cable into the input lead COM, and connect the instrument as described in Fig. 12

WARNING

Insert the cable in the middle of the clamp jaws, in order to obtain accurate measures.

5.6.1. Key F3 “Sys”

While measuring DC, AC 1P or AC 3P Power, press key F3 (Sys) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F3, the cursor will

scroll through the available items, as follows:

• Start Log: it starts a recording of the electrical mains

parameters;

• On-line: it starts a Bluetooth On-Line Scope;

• Memory: it shows the list of the saved data;

• SnapShot: it carries out an instant saving of the measured

Use the marks as a reference (see Fig. 2).

Mod Par Sys OK

AC 50.0 Hz

21.47 kW

7.68 kVari

22.90 kVA

Start Log

Online Memory SnapShot Download Esc

19/01-17:00:00

parameters;

• Download: it sets to the mode for downloading the data saved in the memory;

• Esc: it closes the drop-down menu.

By pressing key F4 (OK), the selected item is confirmed.

The electrical parameters recorded during a Recording, transmitted during an On-Line Scope or saved in a SnapShot, according to the mode set, are the following:

• AC 1P:AC 1P: P, Q, S, pF, dPf, V, I, THDV, THDI, hV01..hVxx (xx=25 for fundamental

frequency 10..75Hz; xx=8 for fundamental frequency 75..400Hz);

• AC 3P: P, Q, S, pF, dPf, V, I, THDV, THDI, hV01..hVxx (xx=25 for fundamental

frequency 10..75Hz; xx=8 for fundamental frequency 75..400Hz);

• DC: P, V, I.

5.6.1.1. “Start Log” recording

Upon confirming the “Start Log” item, the instrument sets to

stand-by and waits for a recording to start. A recording shall be started when reaching the following minute as indicated by the instrument’s time.

The message “Wait” is displayed.

Mod Par Sys Fnz

AC 50.0 Hz

21.47 kW

7.68 kVari

22.90 kVA

Wait 1P

19/01-17:00:35

EN - 37

HT9022

WARNING

When a recording is in progress, if the selector switch of the clamp is moved to any other position, the recording shall be interrupted. In the memory, you will find the values stored up to that moment.

Mod Par Sys Fnz

AC 50.0 Hz

While recording, the display shows the message “Log” and keys F2 (Par) and F4 (Fnz) are active, which give the possibility of

displaying the parameters or enabling the functions seen in the previous paragraphs.

21.47 kW

7.68 kVari

22.90 kVA

Log 1P

While recording, press key F3 (Sys) to open the drop-down

menu shown in the screen to the side. At each subsequent

pressure of key F3, the cursor will scroll through the available

items, as follows:

• Stop Log: it stops the recording in progress;

• Info: it shows some information about the recording in

progress;

• Esc: it closes the drop-down menu.

By pressing key F4 (OK), the selected item is confirmed.

On the right, an example of the screen which is displayed when

the item Info is selected. It shows:

• Start: starting date and time of recording;

• Int. Period: the integration period set (see par. 5.2.3);

• N. Periods: number of periods recorded;

• Auton.: memory autonomy expressed in days/hours.

Pressing key F4 (Esc) goes back to the parameter measuring

screen.

19/01-17:01:00

Mod Par Sys OK

AC 50.0 Hz

21.47 kW

Stop Log

Info Esc

7.68 kVari

22.90 kVA

Log

19/01-17:01:00

Esc

Start: 19/01-17:01:00 Int.Period: 1 N.Periods:00025 Auton: 00d/02h

19/01-17:01:25

5.6.1.2. On-line

Mod Par Sys Fnz

Upon confirming the “On-line” item, the instrument sets to

Bluetooth transmission mode; the display shows the message

“Onl.”. Keys F2 (Par) and F4 (Fnz) are active, which give the possibility

of displaying the parameters or enabling the functions seen in the previous paragraphs.

WARNING

AC 50.0 Hz

21.47 kW

7.68 kVari

22.90 kVA

Onl.. 1P

19/01-17:00:35

When an on-line transmission is in progress, if the selector switch of the clamp is moved to any other position, the transmission shall be interrupted.

EN - 38

HT9022

Mod Par Sys OK

During a Bluetooh transmission, press key F3 (Sys) to open the

drop-down menu shown in the screen to the side. At each

subsequent pressure of key F3, the cursor will scroll through the

available items, as follows:

• Stop: it stops the transmission in progress;

• Esc: it closes the drop-down menu.

By pressing key F4 (OK), the selected item is confirmed.

AC 50.0 Hz

Stop

Esc

21.47 kW

7.68 kVari

22.90 kVA

Onl.

19/01-17:01:00

5.6.1.3. Memory

▼

Del OK Esc

Upon confirming the “Memory” item, the instrument shows the

screen here to the side.

The screen lists the recordings (L) with starting date and time and SnapShots (S) with saving date and time.

The residual memory autonomy is shown, expressed in days(d) /

S01:01/01-10:41:28 S02:01/01-10:41:35 L03:01/01-10:45:00 S04:02/01-12:05:11 L05:02/01-14:00:00 Auton: 00d/02h

hours(h), according to the integration period set (see par. 5.2.3).

19/01-17:00:35

Each page lists 5 memory locations; by pressing key F1 (▼), it is possible to scroll through

the following pages.

▼

Press key F2 (Can) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F2, the

cursor will scroll through the available items, as follows:

• Del. Tot.: it deletes all Recordings (L) and Snapshots (S)

saved in the memory;

• Del. Last: it deletes the last information saved in the

memory.

When pressing key F3 (OK) once, the display shows the message “Delete?”; pressing key F3 again confirms the selected

item.

S01:01/01-10:41:28 S02:01/01-10:41:35 L03:01/01-10:45:00 S04:02/01-12:05:11 L05:02/01-14:00:00 Auton: 00d/02h

Delete?

19/01-17:00:35

Del OK Esc

Del.Tot.

Del.Last

By pressing key F4 (Esc) once, the selected item is not confirmed. Pressing key F4 again

goes back to the parameter measuring screen.

5.6.1.4. SnapShot

Upon confirming the “SnapShot” item, the instrument instantly saves the measured parameters and shows the message “Mem Ok” on the display for 1 second, to confirm that saving has been

carried out.

Mod Par Sys Fnz

AC 50.0 Hz

21.47 kW

7.68 kVari

22.90 kVA

Mem Ok 1P 19/01-17:00:35

EN - 39

HT9022

5.6.1.5. Download

Esc

Upon confirming the “Download” item, the instrument sets to the

mode for downloading the data saved in the memory and shows the screen to the side.

Pressing key F4 (Esc) goes back to the parameter measuring

screen.

Download

19/01-17:00:35

EN - 40

HT9022

5.7. POSITION “Ω ”: RESISTANCE AND CONTINUITY MEASUREMENT

WARNING

Before attempting any resistance measurement, remove power from the circuit under test and discharge all capacitors, if present.

Mod OK Fnz

By positioning the selector switch to “Ω ”, the screen to the side will appear.

> 60.0 kΩ

19/01-17:00:00

Fig. 13: resistance measurement

Insert the red cable into the input lead VΩ and the black cable into the input lead COM,

and connect the instrument as described in Fig. 13.

Press key F1 (Mod) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F1, the

cursor will scroll through the available items, as follows:

• Resistance: resistance measurement;

• Continuity: continuity measurement;

Mod OK Fnz

Resistance

Continuity Help Esc

> 60.0 kΩ

• Help: it displays the connection between instrument and

system;

• Esc: it closes the drop-down menu.

19/01-17:00:00

Select the desired mode and press key F3 (OK) to confirm.

EN - 41

HT9022

Mod OK Fnz

The screen shows an example of Resistance measurement.

50.0 kΩ

The screen shows an example of Continuity measurement. If the measured resistance is lower than the limit resistance value set (see par. 5.2.5) shown below (Lim Res: 1Ω), the Buzzer sounds continuously.

5.7.1. Key F4 “Fnz”

While measuring Resistance or Continuity, press key F4 (Fnz) to

open the drop-down menu shown on the screen to the side. At

each subsequent pressure of key F4, the cursor will scroll

through the available items, as follows:

• Max: it constantly displays the maximum resistance value

measured;

• Min: it constantly displays the minimum resistance value

measured;

• Rst: it deletes all stored Max and Min values;

• Esc: it goes back to a normal measuring mode.

By pressing key F3 (OK), the selected item is confirmed.

To the side, an example of measurement with active Max function. The display shows the active function.

19/01-17:00:00

Mod OK Fnz

0.3 Ω

Res Lim: 1 Ω

19/01-17:00:00

Mod OK Fnz

Max

Min Rst Esc

50.0 kΩ

19/01-17:00:00

Mod OK Fnz

Max

50.0 kΩ

19/01-17:00:00

5.7.1.1. Hold

Short pressing key “H” activates the function Data HOLD. The display shows the message

“H” and the screen of the measurement in progress is “frozen”.

This operating mode is deactivated when key “H” is pressed again or the switch is

operated.

5.7.1.2. Backlight

Long pressing key “H” activates or deactivates the display backlight. This function

automatically deactivates after approximately 10 seconds after being activated, in order not to discharge the batteries.

EN - 42

HT9022

5.8. POSITION “INRUSH A ”: INRUSH CURRENT MEASUREMENT

WARNING

• The maximum measurable DC or AC+DC current is 1000A. Do not

measure currents exceeding the limits given in this manual. Exceeding these limits could result in electrical shocks to the user and damage to the instrument.

• We recommend holding the clamp respecting the safety area created by

the hand protection (see Fig. 3).

• Currents <3A are zeroed.

Mod Zero Run Mem

50Hz 01/10

By positioning the selector switch to “InRush A ”, the screen to

the side will appear. The display shows the current settings for recording inrush currents (see par. 5.2.4).

10 A

Fix 15A 1/1

19/01-17:00:00

Fig. 14: inrush current measurement

Press key F1 (Mod) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F1, the

cursor will scroll through the available items, as follows:

• 50Hz: 50Hz inrush current measurement;

• 60Hz: 60Hz inrush current measurement;

• 400Hz: 400Hz inrush current measurement;

• DC: DC inrush current measurement;

• Help: it displays the connection between instrument and

system;

• Esc: it closes the drop-down menu.

Select the desired mode and press key F4 (OK) to confirm.

EN - 43

Mod Zero Run OK

50Hz 01/10

50Hz

60Hz 400Hz DC

10 A

Help Esc

Fix 15A 1/1

19/01-17:00:00

HT9022

5.8.1. Virtual key “Zero”

By pressing key F2 (Zero), the average value of measured current is zeroed.

Note: carry out current zeroing before clamping the conductor.

WARNING

5.8.2. Key F3 “Run”

WARNING

For any frequency of 50Hz, 60Hz and DC, 32 samples are taken in each halfperiod for 100 half-periods, while for a frequency of 400Hz 8 samples are taken every half-period for 100 half-periods. In Fix mode, the event is detected when the RMS value of the current exceeds the set current threshold value. In Var mode, the event is detected when the difference between the RMS value of a half-period and that of the previous one exceeds the set current threshold value. The maximum number of events which can be saved in a single campaign is 10 and the maximum number of storable recordings is 20.

Pressing key F3 (Run) starts an inrush current recording and the indication relevant to key F3 turns into Stp. On the right, a

sample screen, which contains:

• the message “Log”, to indicate that recording is in progress;

• indication “03/10”, relevant to the last detected event;

• indication of date/time and current value reached by the last

detected event.

By pressing key F3 (Stp) again, recording is stopped and the

data are stored in the memory.

Mod Zero Stp Mem

50Hz 03/10

24/01-16:30:49

19 A

Fix 15A 1/1

Log

24/01-16:30:50

If 10 events are detected while recording, recording is automatically stopped.

5.8.3. Key F4 “Mem”

▼

By pressing key F4 (Mem), the screen to the side appears,

which lists the Inrush Currents saved in the memory. Each displayed page lists 5 memory locations and, by pressing

key F1 (▼), it is possible to scroll through each single location.

I01:24/01-16:23:13

I02:24/01-16:26:23 I03:24/01-16:30:47 I04:24/01-16:53:38 I05:24/01-17:06:45

Del OK Esc

Press key F2 (Can) to open the drop-down menu shown on the screen to the side. At each subsequent pressure of key F2, the

cursor will scroll through the available items, as follows:

• Del. Tot.: it deletes all InRush current data saved in the

memory;

• Del. Last: it deletes the last information saved in the

memory.

When pressing key F3 (OK) once, the display shows the message “Delete?”; pressing key F3 again confirms the

selected item.

EN - 44

25/01-17:05:00

▼

Del OK Esc

I01:24/01-16:23:13

I02:24/01-16:26:23

Del.Tot.

Del.Last

I03:24/01-16:30:47 I04:24/01-16:53:38 I05:24/01-17:06:45

25/01-17:05:00

HT9022

By pressing key F4 (Esc) once, the selected item is not confirmed. Pressing key F4 again

takes you back to the Inrush Current measuring screen.

Pressing key F3 (OK) shows the trend of inrush current relevant

to the selected memory location. It shows:

• starting date/time of the recorded event;

• maximum current value reached during the event;

• number of the event relevant to the measuring campaign;

• measuring modes set relevant to the measuring campaign;

• the number of the selected location.

▼

Can OK Esc

24/01-16:30:47 19A 1/10

Fix 15A 1/1

Irc03

25/01-17:05:00

By pressing key F1 (▼), it is possible to display the other events relevant to the selected

campaign.

Pressing key F4 (Esc) goes back to the list of the Inrush Currents saved in the memory

(see par. 5.8.3).

EN - 45

HT9022

6. MAINTENANCE

6.1. GENERAL INFORMATION

1. The instrument you purchased is a precision instrument. While using and storing the

instrument, carefully observe the recommendations listed in this manual in order to prevent possible damage or danger during use.

2. Do not use the instrument in environments with high humidity levels or high

temperatures. Do not expose to direct sunlight.

3. Always switch off the instrument after use. In case the instrument is not to be used for

a long time, remove the batteries to avoid liquid leaks that could damage the instrument’s internal circuits.

6.2. BATTERY REPLACEMENT

Only expert and trained technicians should perform this operation. Before carrying out this operation, make sure you have removed all cabled from the input leads or the cable being tested from inside the clamp jaw.

1. Turn the rotary switch to the OFF position.

2. Disconnect the cabled from the input leads and the cable being tested from the clamp

jaw.

3. Loosen the battery cover fastening screw and remove the cover.

4. Remove the flat batteries from the battery compartment.

5. Insert two new batteries of the same type (1.5V LR 03 AAA). Pay attention to the

correct polarity.

6. Position the battery cover back over the compartment and fasten it with the relevant

screw.

7. Do not scatter old batteries into the environment. Use the relevant containers for

disposal.

6.3. CLEANING THE INSTRUMENT

Use a soft and dry cloth to clean the instrument. Never use wet cloths, solvents, water, etc.

6.4. END OF LIFE

WARNING

WARNING: the symbol on the instrument indicates that the appliance and its

accessories must be collected separately and correctly disposed of.

EN - 46

HT9022

7. TECHNICAL SPECIFICATIONS

7.1. TECHNICAL CHARACTERISTICS

Uncertainty is indicated as [% of reading + digit number]. It is referred to the following reference conditions: temperature 23°C ± 5°C with relative humidity < 80%.

DC voltage

Range Resolution Uncertainty

0.5 ÷ 999.9V

Input impedance: 2.6MΩ

0.1V

(1.0%rdg+4dgt)

AC Voltage (AC+DC TRMS)

Range Resolution

Uncertainty

43 ÷ 63Hz 10 ÷ 47Hz, 63 ÷ 400Hz

0.5 ÷ 999.9V

Input impedance: 2.6MΩ; Max. Crest Factor: 1.41

0.1V

±(1.0%rdg+3dgt)

(3.5%rdg+3dgt)

AC/DC voltage: MAX / MIN / CREST

Function Range Resolution Uncertainty Response time

MAX,MIN,CREST

Input impedance: 2.6MΩ; Max. Crest Factor: 1.41

0.5 ÷ 999.9V

0.1V

(3.5%rdg+5dgt)

DC current

Range Resolution Uncertainty

0.5 ÷ 999.9A

0.1A

(2.0%rdg+5dgt)

AC current (AC+DC TRMS)

Range Resolution

Uncertainty

43 ÷ 63Hz 10 ÷ 47Hz, 63 ÷ 400Hz

0.5 ÷ 999.9A

Max. Crest Factor: 3

0.1A

±(2.0%rdg+4dgt)

(3.5%rdg+5dgt)

Corrente AC/DC:AC/DC current: MAX / MIN / CREST

Function Range Resolution Uncertainty Response time

MAX,MIN,CREST

Max. Crest Factor: 3

0.5 ÷ 999.9A

0.1A

(3.5%rdg+5dgt)

Resistance and Continuity test

Range Best resolution Uncertainty

0.0Ω ÷ 59.9kΩ 0.1Ω

(1.0%rdg+5dgt)

Frequency (with test leads/ with jaws)

Range Resolution Uncertainty

10.0 ÷ 99.9Hz

100 ÷ 400Hz

Voltage range for frequency measure: 0.5 ÷ 1000V / Current range for frequency measure with jaws: 0.5 ÷ 1000A

0.1Hz 1Hz

±(1.0%rdg+5dgt)

DC power

Ra n g e [kW] Resolution [kW] Uncertainty

0.00 ÷ 99.99

100.0 ÷ 999.9

Uncertainty defined for: Voltage > 10V, Current ≥ 2A

0.01

0.1

±(3.0%rdg+3dgt)

Active Power, Apparent power:

Range [kW], [kVA] Resolution [kW], [kVA] Uncertainty

0.00 ÷ 99.99

100.0 ÷ 999.9

Uncertainty defined for: sine waveform 10..65Hz, Voltage > 10V, Current ≥ 2A, Pf ≥ 0.5

0.01

0.1

±(2.0%rdg+3dgt)

Protection against

overcharge

1000VDC/ACrms

Protection against

overcharge

1000VDC/ACrms

1sec

Protection against

overcharge

2000ADC/ACrms

Protection against

overcharge

2000ADC/ACrms

1sec

Protection against

overcharge

1000VDC/ACrms x 60s

Protection against

overcharge

1000VDC/ACrms 2000ADC/ACrms

EN - 47

HT9022

Range [kW], [kVA] Resolution [kW], [kVA] Uncertainty

0.00 ÷ 99.99

100.0 ÷ 999.9

Uncertainty defined for: sine waveform > 65Hz, Voltage > 10V, Current ≥ 5A, Pf ≥ 0.5

Active Energy

Ra n g e [kWh] Resolution [kWh] Uncertainty

0.00 ÷ 99.99

100.0 ÷ 999.9

Uncertainty defined for: sine wave 10..65Hz, Voltage > 10V, Current ≥ 2A, Pf ≥ 0.5

Ra n g e [kWh] Resolution [kWh] Uncertainty

0.00 ÷ 99.99

100.0 ÷ 999.9

Uncertainty defined for: sine waveform > 65Hz, Voltage > 10V, Current ≥ 5A, Pf ≥ 0.5

Reactive Power

Ra n g e [kVAR] Resolution [kVAR] Uncertainty

0.00 ÷ 99.99

100.0 ÷ 999.9

Uncertainty defined for: sine wave 10..65Hz, Voltage > 10V, Current ≥ 2A, 0.992 ≥ Pf ≥ 0.5

Ra n g e [kVAR] Resolution [kVAR] Uncertainty

0.00 ÷ 99.99

100.0 ÷ 999.9

Uncertainty defined for: sine waveform > 65Hz, Voltage > 10V, Current ≥ 5A, 0.992 ≥ Pf ≥ 0.5

Reactive Energy

Ra n g e [kVARh] Resolution [kVARh] Uncertainty

0.00 ÷ 99.99

100.0 ÷ 999.9

Uncertainty defined for: sine wave 10..65Hz, Voltage > 10V, Current ≥ 2A, 0.992 ≥ Pf ≥ 0.5

Ra n g e [kVARh] Resolution [kVARh] Uncertainty

0.00 ÷ 99.99

100.0 ÷ 999.9

Uncertainty defined for: sine waveform > 65Hz, Voltage > 10V, Current ≥ 5A, 0.992 ≥ Pf ≥ 0.5

Power factor

Range Resolution Uncertainty

0.20 ÷ 1.00

Uncertainty defined for: sine waveform 10..65Hz, Voltage > 10V, Current ≥ 2A Uncertainty defined for: sine waveform > 65Hz, Voltage > 10V, Current ≥ 5A

Voltage and Current harmonics

Harmonic order Frequency [Hz] Resolution [V], [A] U ncertainty

1 ÷ 25 10 ÷ 75

1 ÷ 8 75 ÷ 400

Phase sequence and 1-lead phase coincidence

Range Input impedance

100 ÷ 1000V 1.3MΩ

Frequency range: 40..70Hz. (*) Measurement carried out under the following standard conditions: instrument firmly held in the hand, standard shoes, standard floor,

etc.

0.01

0.1

0.01

0.1

0.01

0.1

0.01

0.1

0.01

0.1

0.01

0.1

0.01

0.1

0.01

0.1

±(3.0%rdg+3dgt)

±(2.0%rdg+3dgt)

±(3.0%rdg+3dgt)

±(2.0%rdg+3dgt)

±(3.0%rdg+3dgt)

±(2.0%rdg+3dgt)

±(3.0%rdg+3dgt)

±3°

±(5.0%rdg+5dgt)

EN - 48

HT9022

7.1.1. Safety standards

Compliant with Standards: IEC / EN61010-1, IEC / EN61010-2 – 032 Technical documentation: IEC/EN61187 Safety of measuring accessories: IEC/EN61010-31 Insulation: Class 2, double insulation Pollution level: 2 Max height: 2000m, indoor use Overvoltage category: CAT IV 600V / CAT III 1000V to earth, max 1000V between

7.1.2. General characteristics

inputs

Characteristics of radio module

Radio: Bluetooth V2.0 Frequency: 2.4 GHz (2400-2483.5MHz) Power: Class 2 Data rate: 57600 baud

Memory

Internal memory: 2Mbytes

Recordings

N°. max Log + Snapshot stores: 99 N°. max InRush stores: 20 (each with max 10 events)

Mechanical characteristics

Size: 252 (L) x 88 (W) x 44 (H) mm; 9.92 x 3.46 x 1.73 in Weight (batteries included): approx 420g; 14.8 ounces Jaw opening / Max cable size: 45mm; 1.77 in

Power supply

Battery type: 2 batteries x 1.5V LR 03 AAA Battery life: approx. 53 hours of use in “W ” position Auto power OFF: 5 min. with enabled function The display shows the following

symbol “

”

Display

Characteristics: graphic display 128x128 pixels Sampling rate: 128 samples per period (base sampling) Updating frequency: 1/s

7.2. ENVIRONMENT

7.2.1. Environmental conditions for use

Reference calibration temperature: 23° ± 5 °C Operating temperature: 0 ÷ 40 °C Allowable relative humidity: < 80% Storage temperature: -10 ÷ 60 °C Storage humidity: < 70%

This instrument satisfies the requirements of Low Voltage Directive 2006/95/EEC

(LVD) and of EMC Directive 2004/108/EEC

7.3. ACCESSORIES PROVIDED

• Instrument

• Pair of test leads

• Pair of alligator clips

• ISO9000 calibration certificate

• User manual

• Bag

• Batteries

EN - 49

HT9022

8. SERVICE

8.1. WARRANTY CONDITIONS

This instrument is warranted against any material or manufacturing defect, in compliance with the general sales conditions. During the warranty period, defective parts may be replaced. However, the manufacturer reserves the right to repair or replace the product.

The warranty shall not apply in the following cases:

• Repair and/or replacement of accessories and batteries (not covered by warranty).

• Repairs that may become necessary as a consequence of an incorrect use of the

instrument or due to its use together with non-compatible appliances.

• Repairs that may become necessary as a consequence 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 authorization.

Our products are patented and our trademarks are registered. The manufacturer

reserves the right to make changes in the specifications and prices if this is due to improvements in technology.

8.2. SERVICE

If the instrument does not operate properly, before contacting the After-sales Service, please check the conditions of batteries and cables and replace them, if necessary. Should the instrument still operate improperly, check that the product is operated according to the instructions given in this manual.

Should the instrument be returned to the After-sales Service or to a Dealer, transport will be at the Customer’s charge. However, shipment will be agreed in advance. A report will always be enclosed to a shipment, stating the reasons for the product’s return. Only use original packaging for shipment; any damage due to the use of non-original packaging material will be charged to the Customer.

EN - 50

HT9022

9. APPENDIX – THEORETICAL OUTLINE

9.1. CALCULATION OF POWERS IN “AC 1P” MODE

The instrument measures the values of Rms Voltage and Rms Current and calculates the average Power values for each period. The formulas for power calculation are:

where: N = number of samples in the period

9.2. CALCULATION OF POWERS IN “AC 3P” MODE

The instrument measures the values of Rms Voltage and Rms Current and calculates the average Power values for each period. The formulas for power calculation are:

Pf =

××=

PSQ −=

×××=

∑∑

∑

×××=

∑

QSP −=

××××=

∑∑

Pf =

where: N = number of samples in the period

9.3. CALCULATION OF POWERS IN “DC” MODE

The instrument measures the values of Avg Voltage and Avg Current and calculates the average Power value for each period. The formula for power calculation is:

⎞

×=

⎛

⎟

⎜

⎠

⎝

⎛

⎜ ⎝

××

⎞

⎟

∑∑

⎠

EN - 51

HT9022

9.4. VOLTAGE AND CURRENT HARMONICS

Any periodic non-sinusoidal wave may be represented by a sum of sinusoidal waves, each with a frequency which is a whole multiple of the fundamental, according to the relationship:

∞

)tsin(VVv(t)

ϕω

∑

where: V0 = Average value of v(t) V1 = Amplitude of the fundamental of v(t) Vk = Amplitude of the k-nth harmonic of v(t)

CAPTION:

1. Fundamental

2. Third Harmonic

3. Distorted waveform sum of two

previous components.

++=

(1)

Effect of the sum of 2 multiple frequencies.

For network voltage, the fundamental has a frequency of 50 Hz, the second harmonic has

a frequency of 100 Hz, the third harmonic has a frequency of 150 Hz and so on. Harmonic

distortion is a continuous problem and must not be confused with short-duration phenomena such as peaks, drops 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 EN 50160 suggests cutting the summation in the

expression (1) at the 40th harmonic.

A fundamental index to detect the presence of harmonics is the THD defined as:

∑

THDv

This index takes into consideration the presence of all harmonics, and the more distorted is the waveform, the higher is the index.

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HT9022

9.5. LIMIT VALUES FOR HARMONICS

Standard EN-50160 prescribes the limits for the Voltage Harmonics the Energy Provider may introduce into the network. In normal operating conditions, at any time in a week, 95% of the efficient values of each harmonic voltage, averaged to 10 minutes, must be lower than or equal to the values indicated in the following Table. The total harmonic distortion (THD%) of supply voltage (including all harmonics up to the 40th order) must be lower than or equal to 8%.

Odd Harmonics Even Harmonics

Not multiple of 3 Multiple of 3

Order h Relative Voltage %Max Order h Relative Voltage %Max

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

Order h

Relative

Voltage %Max

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.

9.6. CAUSES OF THE PRESENCE OF HARMONICS

Any appliance altering the sinusoidal wave or simply using a part of such wave causes distortions to the sinusoid, and hence harmonics. All current signals are therefore someway virtually distorted. The most common distortion is the harmonic distortion caused by non-linear loads such as household appliances, personal computers or motor speed adjusters. Harmonic distortion generates significant currents at frequencies which are whole multiples of network voltage. Harmonic currents have a remarkable effect on neutral conductors of electrical systems. In most countries, the network voltage used is three-phase 50/60Hz, supplied by a transformer with triangle-connected primary circuit and star-connected secondary circuit. The secondary circuit generally generates 230V AC between phase and neutral and 400V AC between phase and phase. Balancing loads for each phase has always been a problem electrical system designers. Until approximately ten years ago, in a well balanced system, the vector sum of the currents in the neutral was zero or anyway quite low (given the difficulty of obtaining a perfect balance). Connected devices were incandescent lights, small motors and other devices that presented linear loads. The result was an essentially sinusoidal current in each phase and a low current on the neutral at a frequency of 50/60Hz. “Modern” devices such as TV sets, fluorescent lights, video machines and microwave ovens normally draw current for only a fraction of each cycle, thus causing non-linear loads and, consequently, non-linear currents. All this generates odd harmonics of the 50/60Hz line frequency. For this reason, nowadays the current in the transformers of the distribution boxes contains not only a 50Hz (or 60Hz) component, but also a 150Hz (or 180Hz) component, a 250Hz (or 300Hz) component and other significant harmonic components up to 750Hz (or 900Hz) and above. The vector sum of the currents in a well balanced system that feeds non-linear loads may still be quite low. However, the sum does not eliminate all harmonic currents. The odd multiples of the third harmonic (called “TRIPLENS”) are added together in the neutral conductor and can cause overheating even with balanced loads.

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HT9022

9.7. CONSEQUENCE OF THE PRESENCE OF HARMONICS

Generally, harmonics of even, 2nd, 4th etc. order do not create problems. Designers must consider the following points when designing a power distribution system containing harmonic currents:

Installation parts Effects attributed to Harmonics

Fuses

Cables

Neutral conductor

Transformers

Motors

Re-phasing capacitors

Non-uniform heating of internal fuse element and consequent overheating which can also lead to an explosion of the fuse casing.

Increase in “body” effect; this means that, for cables with many wires, the internal wires have higher impedance than the external wires. As a consequence, current, which normally distributes along the external surface of the wire, produces: – over-heating of the conductor;

– a premature degrading of the cable’s insulation; – an increase in line voltage drop.

Triple harmonics, odd multiple of three, sum on neutral (instead of nullifying themselves), thus generating a potentially dangerous overheating of the conductor.

Increase in copper loss due to a higher TRMS value of the current that circulates on internal circuits, and also due to the “body” effect on protected wires. Increase of iron loss due to hysteresis cycle distortion and due to the generation of leakage currents on the magnetic core. Heating of insulation material due to a possible DC component that can generate saturation of the magnetic core column.

Increase of loss due to overheating of internal circuits and possible damage of insulation material.

The 5

and 11th harmonic components generate some abnormal electromagnetic coupling that

can increase motor speed.

Increase in “parallel resonance” present inside a circuit, due to inductive loads and re-phasing capacitors, when at least one of the harmonics has the same frequency as the resonance phenomenon. Effects of this event can be very dangerous, with explosion of used re-phasing capacitors.

RCD devices

Energy disk counters

Power controls switch

UPS

Electronics devices

Possible saturation of current sensing toroidal transducers resulting in malfunction, both in terms of untimely intervention and increase of the intervention threshold.

Increased rotation speed of a disk resulting in measurement errors (especially in case of low power factor loads).

Reduction of electric duration of contact surfaces.

Reduced power generation from UPS.

Internal damage of electronic components not protected by suitable devices.

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HT instruments HT9022 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual