ENGLISH User manual © Copyright HT ITALIA 2011 Release EN 1.
HT9022 Table of contents: 1. PRECAUTIONS AND SAFETY MEASURES ........................................................................... 3 1.1. 1.2. 1.3. 1.4. 2. Preliminary instructions .................................................................................................................... 4 During use ........................................................................................................................................ 4 After use ...........................................
HT9022 5.5. Position “W 5.5.1. 5.5.1.1. 5.5.1.2. 5.5.1.2.1. 5.5.1.3. 5.5.1.3.1. 5.5.1.4. 5.5.1.5. 5.5.1.6. 5.5.2. 5.7. 5.8. 5.8.1. 5.8.2. 5.8.3. Hold ................................................................................................................................................. 42 Backlight .......................................................................................................................................... 42 Position “InRush A ”: inrush current measurement ....
HT9022 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.
HT9022 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.
HT9022 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.
HT9022 2.
HT9022 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.
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.
HT9022 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.
HT9022 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.
HT9022 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 WARNING 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.
HT9022 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.
HT9022 5.2.3. Log ▼ ▲ OK By selecting “Log”, the screen to the side will appear. Press keys F2, F3 (T, S) to change the duration of the I n t . P e r i o d : integration period. It will take the following values: 1, 5, 10, 30, 60, 120, 300, 600 or 900 seconds. 001 s Press key F4 (OK) to save the changes made and go back to the previous screen (see par.5.2). 19/01-17:00:00 5.2.4. InRush ▼ ▲ Sel By selecting “InRush”, the screen to the side will appear.
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 AC By positioning the selector switch to “V ”, the screen to the side will appear. Fnz <10.
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 DC The screen shows an example of DC Voltage measurement. 12.0 V 19/01-17:00:00 5.3.1.1. Key F4 “Fnz” Press key F4 (Fnz) to open the drop-down menu shown on screen to the side.
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” OK Press key F2 (Par) to open the drop-down menu shown on the Mod Par screen to the side. At each subsequent pressure of key F2, the AC 50.
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 Mod Par OK Fnz the drop-down menu shown on the screen to the side. At each AC 5 0 . 0 Max Hz subsequent pressure of key F4, the cursor will scroll through the Min Cr+ available items, as follows: • Max: it constantly displays the maximum RMS value of 2 2 0 .
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. ◄ Par By pressing key F3 (OK), the selected item is confirmed.
HT9022 5.3.3. Checking phase sequence and phase concordance with a lead WARNING While measuring, the instrument must be held in the operator’s hand. Mod Par Ok AC <10.0 Hz AC DC Press key F1 (Mod) to open the drop-down menu shown on the Ph Seq screen to the side. At each subsequent pressure of key F1 Help V (Mod), the cursor will scroll through the available items. Select Esc - - - “Ph Seq” and press key F4 (OK) to confirm the selected item. 19/01-17:00:00 5.3.3.1. Verification of Phase Sequence. Fig.
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.
HT9022 Mod Go 7. If the two phases, to which the test lead has been connected, P h S e q are in the correct sequence, the instrument displays the screen here to the side. Should the phase sequence be 123 incorrect, the display shows “132”. To start a new measurement, press key F4 (Go). 19/01-17:00:00 5.3.3.2. Verification of Phase Concordance Fig. 8: verification of Phase Concordance Mod 1. The instrument shows the screen here to the side, and waits for the detection of phase L1. 2.
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.
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.
HT9022 Mod Par Fnz DC The screen shows an example of DC current measurement. 100.0 A 19/01-17:00:00 5.4.1.1. Key F4 “Fnz” Press key F4 (Fnz) to open the drop-down menu shown on the screen to the side.
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 Press key F2 (Par) to open the drop-down menu shown on the screen to the side.
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- Mod Par OK Fnz down menu shown on the screen to the side. At each AC 50.0 Hz Max Min subsequent pressure of key F4, the cursor will scroll through the Cr+ available items, as follows: • Max: it constantly displays the maximum RMS value of 1 0 0 .
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. 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. ◄ Par By pressing key F3 (OK), the selected item is confirmed.
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.
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.
HT9022 5.5.1.2. DC power Mod Par Sys Fnz 0.40 kW DC The screen to the side shows an example of DC power measurement. 19/01-17:00:00 5.5.1.2.1. Key F4 “Fnz” in DC Power measurement While measuring DC Power, press key F4 (Fnz) to open the Mod Par OK drop-down menu shown on the screen to the side. At each DC subsequent pressure of key F4, the cursor will scroll through the available items, as follows: • Max: it constantly displays the maximum value of the 0.
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 Mod Par OK open the drop-down menu shown on the screen to the side. At DC each subsequent pressure of key F4, the cursor will scroll through the available items, as follows: 80.0 • Max: it constantly displays the maximum value of the 20.
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 Mod Par Sys OK screen to the side.
HT9022 5.5.2.2. AC+DC power The screen shows an example of AC+DC Power measurement. Mod Par AC Sys Fnz 50.0 Hz 21.47 7.68 22.90 kW kVari kVA 1P 19/01-17:00:00 5.5.2.3. Pf and dPf The screen shows an example of Power Factor and Cosphi Mod measurement. Par AC Pf dPf Sys Fnz 50.0 Hz 0.94 0.94 i i 1P 19/01-17:00:00 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 Mod Par OK Fnz the drop-down menu shown on the screen to the side.
HT9022 5.5.2.4. AC+DC Voltage and Current The screen shows an example of AC+DC Voltage and Current Mod measurement. Par AC Sys Fnz 50.0 Hz 229.7 V 99.6 A 1P 19/01-17:00:00 5.5.2.4.1. Key F4 “Fnz” in AC Voltage and Current measurement While measuring Voltage and Current, press key F4 (Fnz) to Mod Par OK Fnz open the drop-down menu shown on the screen to the side. At AC 5 0 .Max 0 Hz each subsequent pressure of key F4, the cursor will scroll Min through the available items, as follows: 2 2 9 .
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 8th harmonic for fundamental frequencies between 75Hz and 400Hz. 5.5.2.6. Current harmonics The screen shows an example of Current Harmonics measurement.
HT9022 5.5.2.7. AC Energy Mod The screen shows an example of AC Energy measurement. The values of Active Energy, Reactive Energy, Inductive Energy and Capacitive Reactive Energy are shown. Par Sys Fnz AC 50.0 Hz 2.24 0.84 0.00 kWh kVarih kVarch Log 1P 19/01-17:00:00 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”.
HT9022 5.6. POSITION “W ”: LOG, ON-LINE SCOPE, SNAPSHOT, MEMORY, DOWNLOAD 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). Turn the rotary switch to “W ”.
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 AC 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. Sys Fnz 50.0 Hz 21.47 7.68 22.
HT9022 Mod Par Sys OK During a Bluetooh transmission, press key F3 (Sys) to open the AC 50.0 Hz Stop drop-down menu shown in the screen to the side. At each Esc 21.47 kW subsequent pressure of key F3, the cursor will scroll through the available items, as follows: 7.68 kVari • Stop: it stops the transmission in progress; 22.90 kVA • Esc: it closes the drop-down menu. Onl. By pressing key F4 (OK), the selected item is confirmed. 19/01-17:01:00 5.6.1.3.
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.
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 By positioning the selector switch to “Ω ”, the screen to the side will appear. > OK Fnz 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.
HT9022 Mod The screen shows an example of Resistance measurement. OK Fnz 50.0 kΩ 19/01-17:00:00 Mod 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. OK Fnz Ω 0.3 1 Ω Res Lim: 19/01-17:00:00 5.7.1. Key F4 “Fnz” OK While measuring Resistance or Continuity, press key F4 (Fnz) to Mod open the drop-down menu shown on the screen to the side.
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.
HT9022 5.8.1. Virtual key “Zero” By pressing key F2 (Zero), the average value of measured current is zeroed. WARNING Note: carry out current zeroing before clamping the conductor. 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.
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.
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.
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 0.1V ±(1.0%rdg+4dgt) Protection against overcharge 1000VDC/ACrms Input impedance: 2.6MΩ AC Voltage (AC+DC TRMS) Range Resolution 0.5 ÷ 999.9V 0.1V Protection against overcharge Uncertainty 43 ÷ 63Hz ±(1.
HT9022 Range [kW], [kVA] 0.00 ÷ 99.99 100.0 ÷ 999.9 Resolution [kW], [kVA] 0.01 0.1 Uncertainty ±(3.0%rdg+3dgt) Uncertainty defined for: sine waveform > 65Hz, Voltage > 10V, Current ≥ 5A, Pf ≥ 0.5 Active Energy Range [kWh] 0.00 ÷ 99.99 100.0 ÷ 999.9 Resolution [kWh] 0.01 0.1 Uncertainty ±(2.0%rdg+3dgt) Uncertainty defined for: sine wave 10..65Hz, Voltage > 10V, Current ≥ 2A, Pf ≥ 0.5 Range [kWh] 0.00 ÷ 99.99 100.0 ÷ 999.9 Resolution [kWh] 0.01 0.1 Uncertainty ±(3.
HT9022 7.1.1. Safety standards Compliant with Standards: Technical documentation: Safety of measuring accessories: Insulation: Pollution level: Max height: Overvoltage category: IEC / EN61010-1, IEC / EN61010-2 – 032 IEC/EN61187 IEC/EN61010-31 Class 2, double insulation 2 2000m, indoor use CAT IV 600V / CAT III 1000V to earth, max 1000V between inputs 7.1.2. General characteristics Characteristics of radio module Radio: Frequency: Power: Data rate: Bluetooth V2.0 2.4 GHz (2400-2483.
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).
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: P= S= 1 N × ∑ v i × ii N i =1 1 N 2 1 N 2 × ∑ vi × × ∑ ii N i =1 N i =1 Q = S 2 − P2 P Pf = S where: N = number of samples in the period 9.2.
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: ∞ v(t) = V0 + ∑ Vk sin( ω k t + ϕ k ) k =1 (1) 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.
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%.
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 Non-uniform heating of internal fuse element and consequent overheating which can also lead to an explosion of the fuse casing.
