INSTRUCTION MANUAL 3290 CLAMP ON AC/DC HiTESTER
i Contents Introduction ............................................................. 1 Inspection ............................................................... 2 Safety Notes ........................................................... 3 Usage Notes ........................................................... 6 Organization of This Manual ................................. 10 Chapter 1 Overview 13 1.1 Product Overview ................................. 13 1.2 Features ....................................
ii Chapter 3 Measurement Procedures 43 3.1 Preparations ..........................................43 3.2 Current Measurement ...........................45 3.2.1 Measuring DC Current (DC A) ..........46 3.2.2 Measuring AC Current (AC A) ..........47 3.2.3 Measuring AC + DC Current (AC+DC A) ...........................................................49 3.2.4 Bar Graph .........................................50 3.2.5 Peak Measurement ...........................51 3.2.
iii 3.9.1 NORMAL Mode ................................ 67 3.9.2 SLOW Mode ..................................... 67 3.9.3 FAST Mode ...................................... 67 3.10 Filter Function ....................................... 70 3.11 Key Lock Function ................................ 71 3.12 Bar Graph Enlargement Function ......... 71 3.13 Battery Check Function ........................ 72 3.14 MON Output Filter Function .................. 73 3.15 Auto Power Off Function .......................
iv Chapter 9 Carrying Case 103 Chapter 10 Troubleshooting 105 Chapter 11 After-sale Service 111 11.1 Cleaning ..............................................111 11.2 Service ................................................111 Chapter 12 Appendix 113 12.1 Combined Accuracy ............................113 12.1.1Accuracy Tables .............................113 12.1.2Method of Calculation .....................118 12.2 Use of Intermediate Cable ...................
1 Introduction Thank you for purchasing the HIOKI "3290 CLAMP ON AC/DC HiTESTER". To obtain maximum performance from the product, please read this manual first, and keep it handy for future reference. This manual describes the operation of the 3290 when used with the 9691, 9692, or 9693 CLAMP ON AC/DC SENSOR. Request We have tried to bring this manual as close to perfection as we could achieve.
2 Inspection • When you receive the product, inspect it carefully to ensure that no damage occurred during shipping. In particular, check the accessories, panel switches, and connectors. If damage is evident, or if it fails to operate according to the specifications, contact your dealer or Hioki representative. • Before using the product the first time, verify that it operates normally to ensure that the no damage occurred during storage or shipping.
3 Safety Notes This manual contains information and warnings essential for safe operation of the product and for maintaining it in safe operating condition. Before using the product, be sure to carefully read the following safety notes. This product is designed to conform to IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment. However, mishandling during use could result in injury or death, as well as damage to the product.
4 The following symbols in this manual indicate the relative importance of cautions and warnings. Indicates that incorrect operation presents an extreme hazard that could result in serious injury or death to the user. Indicates that incorrect operation presents a significant hazard that could result in serious injury or death to the user. Indicates that incorrect operation presents a possibility of injury to the user or damage to the product.
5 Measurement categories (Overvoltage categories) This product complies with CATIII (600 V), CATII (1000 V) safety requirements. To ensure safe operation of measurement products, IEC 61010 establishes safety standards for various electrical environments, categorized as CAT I to CAT IV, and called measurement categories. These are defined as follows. CAT I Secondary electrical circuits connected to an AC electrical outlet through a transformer or similar device.
6 Usage Notes Follow these precautions to ensure safe operation and to obtain the full benefits of the various functions. • To avoid short circuits and potentially lifethreatening hazards, never attach the product to a circuit that operates at more than the 600V, or over bare conductors. • Clamp sensor should only be connected to the secondary side of a breaker, so the breaker can prevent an accident if a short circuit occurs.
7 • The top part of the clamp sensor above the barrier (including the clamps, but not the lever) is provided with double insulation to ensure safety. Be careful not to drop the sensor or otherwise subject it to impact. A damaged sensor may result in electric shock during measurement. In case of sensor damage, contact us immediately for repair or discard the damaged sensor to avoid subsequent use.
8 • Do not use the product when the battery is depleted ( lights on the LCD). When is on, accuracy and other specifications cannot be guaranteed. • For the inside memory protection, make sure the power is turned off before plugging in or unplugging the AC adapter. • Adjustments and repairs should be made only by technically qualified personnel. • If the protective functions of the product are damaged, either remove it from service or mark it clearly so that others do not use it inadvertently.
9 Observe the following to avoid damage to the product. • Installation and Operating Environment Between 0°C and 40°C; 80% RH or less; indoors only. Direct sunlight High temperature, high humidity, dust Electromagnetic radiation • Do not store or use the product where it could be exposed to direct sunlight, high temperature or humidity, or condensation. Under such conditions, the product may be damaged and insulation may deteriorate so that it no longer meets specifications.
10 Organization of This Manual Chapter 1 Product Overview Provides an overview of the product and describes the parts and functions. Chapter 2 Basic Measurement Procedure Describes the basic measurement procedure for quick reference and the peak measurement procedure in DC current (DC A) mode, AC current (AC A) mode, and AC+DC A mode. Chapter 3 Measurement Procedure Describes the measurement procedure for the 3290 CLAMP ON AC/DC HiTESTER when combined with the 9691, 9692, or 9693 CLAMP ON AC/DC SENSOR.
11 Chapter 10 Troubleshooting Lists common symptoms that may indicate a malfunction. If you encounter a problem, be sure to read this chapter before requesting repair. Chapter 11 Service Describes our customer support service. Chapter 12 Appendix • Provides the accuracy table and explains how to calculate accuracy for the 3290 CLAMP ON AC/ DC HiTESTER when combined with the 9691, 9692, or 9693 CLAMP ON AC/DC SENSOR. • Describes how to use the intermediate cable.
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Chapter 1 Overview Overview 13 Chapter 1 1.1 Product Overview The 3290 CLAMP ON AC/DC HiTESTER is used with the 9691, 9692, or 9693 CLAMP ON AC/DC SENSOR. These sensors are interchangeable and any model can be used with the 3290. The 3290 automatically detects the sensor connected and sets up the appropriate range. When combined with the 9691, 9692, or 9693 Sensor, the 3290 HiTESTER can perform DC, AC, and AC+DC measurement of a live power line.
14 Chapter 1 Overview Multifunction Microcomputer The 3290 both compact and multifunctional thanks to the built-in microcomputer and use of the SHIFT key. Large-Screen LCD The large-screen LCD employed is easy to read. Clamp Sensor The 3290 is compatible with three clamp-on AC/DC sensors (9691, 9692, and 9693) having different ratings. Because the 3290 automatically detects the sensor connected, you need not edit the setting each time you change the sensor.
Chapter 1 Overview 15 AC+DC Measurement The 3290 measures AC superimposed on DC, half-wave rectified, and full-wave rectified. Peak Measurement The peak hold current can also be measured. REC Function You can select whether the maximum or minimum measurement value is displayed. Dual-power supply The 3290 runs on either battery power or an AC power source. Dustproof Cap The dustproof cap is provided for use in a dusty environment.
16 Chapter 1 Overview 1.3 Parts Names and Functions 1.3.
Chapter 1 Overview 17 26 25 Keys for Basic Measurement 1. POWER Key • Turns power ON/OFF. • Holding down the CLEAR key and turning power on initializes the setting save function and restores the default settings. • Holding down the HOLD key and turning power on disables the auto power-off function. • Holding down the PEAK/Hz key and turning power on turns off the buzzer. 2.
18 Chapter 1 Overview 3. MODE Key • Selects the current measurement mode. DC A AC A AC+DC A 4. RANGE Key • Selects auto range or manual range. • Selects a measurement range when manual range is selected. • The current ranges for the 9691 and 9692 are 20 A and 200 A; the ranges for the 9693 are 200 A and 2000 A. The frequency ranges are 10 Hz, 100 Hz, and 1000 Hz. AUTO L M (Hz only) H 5. OUTPUT Key • Sets the output (for current and frequency measurement). Two outputs are available.
Chapter 1 Overview 19 8. PEAK/Hz Key • PEAK performs peak measurement of waveforms (peak hold). • Hz performs frequency measurement (in AC A mode). • Holding down the PEAK/Hz key and turning power on turns off the buzzer. 9. MAX/MIN Key • Activates the recording function and displays the maximum value (MAX), minimum value (MIN), mean value of both maximum & minimum values (AVE), and elapsed time (TIME). • Pressing this key immediately activates the recording function.
20 Chapter 1 Overview • During RMS measurement in AC mode or when in AC+DC mode (with RMS on), the measurement response speed changes according to the screen-updating rate (SLOW, FAST, or NORMAL). • You can only change the measurement response speed. For details, see 18 under “Keys for Advanced Measurement.” NORMAL SLOW FAST 11. 0 ADJ Key (SHIFT CLEAR Keys) • Performs auto zero adjustment in DC A or AC+DC A mode. Keys for Advanced Measurement 12.
Chapter 1 Overview 21 15. LOCK Key (SHIFT HOLD Keys) • Locks all keys including the POWER key. • To unlock, press the same keys again (SHIFT HOLD keys). 16. FILTER Key (SHIFT PEAK/Hz Keys) • Turns on a low-pass filter of approx. 500 Hz in AC A or AC+DC A mode. • To turn the filter off, press the same keys again (SHIFT PEAK/Hz keys). 17. B.CHECK Key (SHIFT MAX/MIN Keys) • Indicates remaining battery power. When power is depleted to 0%, the low battery warning ( ) goes on. 18.
22 Chapter 1 Overview Direct Current (DC) Alternating Current (AC) Alternating Current and Direct Current (AC+DC) Auto zero adjustment is active. OUT1 OUT2 Low battery warning Setting of OUT1 Setting of OUT2 MON MON.FL REC AUTO L M H FAST SLOW FILTER MAX MIN AVE TIME MEAN RMS PEAK Hz A hour Data hold function Monitor is active. 1 Hz filter for monitor is active. Record is active. Auto power-off is active.
Chapter 1 Overview 23 Parts 20. Sensor Connector (SENSOR) Connect the 9691, 9692, or 9693 CLAMP ON AC/DC SENSOR to this connector. 21. AC Adapter Connection Terminal Connect the 9445-02 AC ADAPTER (optional) to this terminal when not using the battery or for long-term measurement. 22. Output Terminal 1 (OUT1) Connect the 9094 OUTPUT CORD (optional) to this terminal to obtain output during current or frequency measurement. 23.
24 Chapter 1 Overview 1.3.
Chapter 1 Overview 1.4 Flowchart Of Key Operations 1.4.
26 Chapter 1 Overview MODE key AC A DC A OUTPUT key OUT1 OUT2 OUT1 OUT2 AC+DC A OUT1 OUT2 OFF OFF OFF OFF OFF OFF MON B.Lo REC B.Lo REC B.
Chapter 1 Overview MODE key DC A AC A AC+DC A MON.FL key MON Disabled MON MON.FL MON.
28 Chapter 1 Overview 1.4.2 Frequency Mode PEAK/Hz key PEAK Hz (AC A only) RANGE key AUTO range AUTO range L range 10.00 Hz(L) range H range 100.0 Hz(M) range 1000 Hz(H) range MAX/MIN key OUTPUT key MAX MAX MIN MIN AVE AVE TIME TIME Measured value Measured value OUT1 OUT2 OUT1 OUT2 OFF OFF OFF MON B.
29 Chapter 1 Overview 1.5 Modes For current, three modes are provided: DC (direct current, ), AC (alternating current, ), and AC+DC (alternating current and direct current, ) modes.
30 Mode Chapter 1 Overview Input waveform Display OUTPUT (only for current mode) REC OK (with polarity) DC （） No Setting Not measurable impossible No Not measurable No Not measurable (zero displayed) AC （） OK No Not measurable OK (without polarity) AC+DC （） OK OK MON
Chapter 1 Overview 31 Quick Reference Measurements Operations DC A ADJ Measurement → AC A RMS (page) 44 45 RMS Measurement → AC A MEAN MEAN Measurement 46 → AC+DC A ADJ Measurement 47 → DC A peak AC A RMS peak AC A MEAN peak AC+DC A peak AC A RMS Hz AC A MEAN Hz PEAK 49 ADJ → Measurement 49 RMS → PEAK Measurement MEAN → PEAK Measurement PEAK ADJ → 49 49 Measurement RMS → Hz Measurement MEAN → Hz Measurement 55 55
32 Chapter 1 Overview Quick Reference (application) Operations Hold the measured value (page) (Data Hold Function) / / /peak/ Measurement Hz/record "O.L." is displayed 59 HOLD (Overflow Warning Function) / / /peak/ When the measured value exceeds the maxHz/record − imum value, "O.L." is displayed.
Chapter 1 Overview Operations 33 (page) Obtained through a low-pass filter (LPF) set to approximately 1 Hz (MON Output Filter Function) / 71 OUT1： MON OUT2： REC OUT1： MON.FL OUT2： REC → Disable: Press the key again. → Obtained through a low-pass filter (LPF) to measurement value and output. (Filter Function) / /peak /500 Hz の Hz 68 FILTER: on → Disable: Press the key again.
34 Chapter 1 Overview Operations (page) Saved the settings (Setting the Save Function) / / /peak/ Hz " " display 73 (Hold down 2 seconds.) Disable: " + Power ON "" " display Enlarged to the Bar graph. (Bar Graph Enlargement Function) / / /Hz Bar Graph Enlargement → Disable: → 69 Press the key again. Battery check / / /peak/ Hz/record 70 → Key lock / / /peak/ Hz on → Disable: → Press the key again.
Chapter 2 Basic Measurement Procedures Basic Measurement Procedures 35 Chapter 2 • To avoid short circuits and potentially lifethreatening hazards, never attach the product to a circuit that operates at more than the 600V, or over bare conductors. • Clamp sensor should only be connected to the secondary side of a breaker, so the breaker can prevent an accident if a short circuit occurs.
36 Chapter 2 Basic Measurement Procedures 2.1 DC Measurement (DC A) 1. 2. Press the MODE key to display DC A ( ). Press the SHIFT key to display .
Chapter 2 Basic Measurement Procedures 3. 4. 5. 9691 CLAMP ON AC/DC SENSOR Load Measured conductor Power source 6. 37 Press the 0 ADJ key (CLEAR key) to perform zero adjustment. will appear on the LCD. Align the current direction indicator on the clamp with the current direction of the conductor to be measured, then clamp the conductor so that it passes through the center of the clamp core. The figure shows the 9691 CLAMP ON AC/DC SENSOR.
38 Chapter 2 Basic Measurement Procedures 2.2 AC Measurement (AC A) 1. Press the MODE key to display AC A ( ). * When measuring current up to 10 Hz, use AC+DC A mode and select SLOW. 2. 9691 CLAMP ON AC/DC SENSOR Measured conductor 3. Clamp the conductor to be measured so that it passes through the center of the clamp core. You need not align the direction of the clamp. Read the displayed value. Since measurement range is set to AUTO, you need not set the range.
Chapter 2 Basic Measurement Procedures 2.3 Peak Measurement In AC+DC A Mode 1. 2. Press the MODE key to display AC+DC A ( ). Press the PEAK/Hz to display PEAK.
40 Chapter 2 Basic Measurement Procedures 3. 4. 5. 9691 CLAMP ON AC/DC SENSOR Measured conductor 6. Press the SHIFT key to display . Press the 0 ADJ key (CLEAR key) to perform zero adjustment. will appear on the LCD. Clamp the conductor to be measured so that it passes through the center of the clamp core. You need not align the direction of the clamp.
Chapter 2 Basic Measurement Procedures 7. 8. 41 Press the CLEAR key (0 ADJ key) to clear the data. Read the displayed value. Since the measurement range is set to AUTO, you need not set the range.
42 Chapter 2 Basic Measurement Procedures
Chapter 3 Measurement Procedures Measurement Procedures 43 Chapter 3 • Do not connect or disconnect the output connector of the clamp-on sensor while power is supplied to the 3290 or the sensor is clamping a conductor to be measured. • When disconnecting the output connector of the clamp-on sensor from the 3290 sensor connector, be sure to hold it by the metal part and pull it upward. If it is pulled by the cable, the lock will not be released and a broken wire in the cable may result.
44 Chapter 3 Measurement Procedures 3. Press the POWER key to turn on the power. Make sure all segments of the LCD light up. Then, the model No. (3290) is displayed and the charge remaining in the battery is shown by a bar graph. New battery 50% battery charge remaining The battery charge is 0. lights up. The beep tone sounds three times. 4. The 3290 is ready for operation in DC-current measurement mode.
Chapter 3 Measurement Procedures 45 Wide terminal Connecting Disconnecting Output connector 3.2 Current Measurement • The ends of the clamp sensor are very delicate. Be careful not to drop the sensor or subject it to impact. If the sensor is deformed or the contact surfaces of the clamps are damaged, the measurement may not be accurate. • Be sure to read the instruction manual for the clamp sensor to be used before starting measurement.
46 Chapter 3 Measurement Procedures • The reading may show a measurement greater than the actual value due to magnetic-field interference. The amount of interference varies depending on the sensor. For details, see “External magnetic-field interference” in Chapter 8 Clamp Sensor Specifications. • The 9691 has a lock mechanism for the clamps so that the clamps will not open due to vibration or other similar causes during measurement. Lock the clamps as necessary.
Chapter 3 Measurement Procedures 47 The auto zero adjustment range is ± 450 dgt. for the L range and ± 45 dgt. for the H range. If the sensor’s offset exceeds these ranges, the auto zero adjustment cannot be performed. 4. Open the clamps of the sensor. Orient the current direction indicator on the clamps in the current direction of the conductor to be measured, place the conductor in the center of the clamp core, and clamp it.
48 Chapter 3 Measurement Procedures 3. Open the clamps of the sensor, place the conductor to be measured in the center of the clamp core, and clamp it. In addition, make sure the clamp sensor is perpendicular to the conductor. • When measuring a current of 10 Hz or less, use AC+DC A mode. Press the SAMPL key to set the screen-updating rate to SLOW (the measurement response speed must be SLOW; the unit symbol “A” will blink slowly).
Chapter 3 Measurement Procedures 49 3.2.3 Measuring AC + DC Current (AC+DC A) 1. 1. Press the MODE key to display “ .” 2. 2. Select a measurement range suitable for the current to be measured. 3. 3. Before clamping the conductor to be measured, press the 0ADJ key (SHIFT CLEAR key) with the clamp sensor fully closed to perform the auto zero adjustment. Upon completion of the auto zero adjustment, “ ” will light up (see 3.4 Auto-Zero-Adjustment Function). 4. 4.
50 Chapter 3 Measurement Procedures 3.2.4 Bar Graph The bar graph shows the current measurement range and the measurement. The blinking segment represents the current measurement range. When AUTO range is selected, it represents the range for internal operation. For example, if the segment at “2” is blinking and the number to the right is “x10,” the range is 20 A. In DC A mode, the negative polarity is shown to the left of “0” and the positive polarity is shown to the right.
Chapter 3 Measurement Procedures 51 When the 9691 clamp on the AC/DC sensor is connected and the H range is selected, the indication will differ from that when other sensors are used as below. • Because the sensor rating is 100 A, the segment at “1” blinks and the number to the right of the bar graph shows “x100,” indicating the 100-A range. • If a measurement is between 900 dgt. and 1050 dgt., the bar graph will not show any change. (Normally, one segment lights up for every 100 dgt..
52 Chapter 3 Measurement Procedures 5. Before conducting the measurement, press the CLEAR key to clear (reset) the previous data. In DC A or AC+DC A mode, when there is no input, pressing the 0ADJ key (SHIFT CLEAR key) performs the auto zero adjustment and clears the data at the same time. 6. Open the clamps of the sensor, place the conductor to be measured in the center of the clamp core, and clamp it.
Chapter 3 Measurement Procedures 53 3.2.6 Output Function (Current Measurement) Fully insert the 9094 output cord (optional) into the output terminal. To prevent malfunction, be careful not to short-circuit the output terminal or apply a voltage to it. There are two output terminals, and different signals may be output from these terminals. The current measurement is output at the rate printed on the battery cover of the 3290.
54 Chapter 3 Measurement Procedures 4. 4. Press the OUTPUT key to edit the output setting. DC A Mode OUT1 MON OUT2 B.Lo ( OFF OFF ( OFF） OFF) AC A Mode and AC+DC A Mode OUT1 REC OUT2 B.Lo ( OFF MON OFF) REC ( OFF ( OFF) OFF) 5. Determine the range setting from both the measurement range of the 3290 and that of the instrument used, such as a recorder. See the conversion tables below. Instrument range /DIV 200 A range 20 A range 10 mV 20 mV 50 mV 0.1 V 0.2 V 0.
Chapter 3 Measurement Procedures 55 Clamp-On Sensor + 3290 MON Output Frequency Characteristics 5 0 GAIN (dB) -5 -10 -15 -20 -25 -30 1 10 100 1k 10k 100k Input frequency (Hz) • Make sure measuring instruments connected to the 3290 have input impedance over 1 M. If the impedance is low, the readings will be affected. • When using the output function, be sure to press the OUTPUT key, and make sure OUT1 is on. Data is output even if OUT1 is not shown on the LCD.
56 Chapter 3 Measurement Procedures • The guaranteed output accuracy range is that in which the current measurements are not O.L. in the L range (MON output may saturate if it exceeds 4 V in the L range). In the H range, the accuracy range is determined by the maximum peak current of the clamp-on sensor. • There is no difference in MON output between RMS and MEAN in AC A mode.
Chapter 3 Measurement Procedures 57 3.3 Frequency Measurement 3.3.1 Frequency Measurement 1. Press the MODE key to display “ .” 2. When the current range of the circuit to be measured is known, set the current range to the manual range (if the current range is unknown, perform current measurement and then set the range). 3. Each time the PEAK/Hz key is pressed, the indication will change as shown below. PEAK Hz (AC only) Measurement 4.
58 Chapter 3 Measurement Procedures • The 10-Hz range or 100-Hz range will display up to 125% of each range. • Pressing the MAX/MIN key will not affect the output. • The bar graph shows the current measurement. • Zero cross detection of waveforms is used for frequency measurement.
59 Chapter 3 Measurement Procedures 3. The auto-power-off function will be automatically disabled ( goes out). OUT1 REC (Hz) OFF OUT2 REC (A) ( OFF) OFF ( ON) 4. Determine the range setting from both the measurement range of the 3290 and that of the instrument used, such as a recorder. Instrument range /DIV 10 mV 20 mV 50 mV 0.1 V 0.2 V 0.5 V 1V 1000 Hz range 10 Hz 20 Hz 50 Hz 100 Hz 200 Hz 500 Hz 1000 Hz 100 Hz range 2 Hz 5 Hz 10 Hz range 1 Hz 0.1 Hz 0.2 Hz 0.
60 Chapter 3 Measurement Procedures • When “----“ is displayed, the output is 0 V. When O.L. is displayed, the output is approx. 1.4 V. • Use the 9445-02 or 9445-03 (EU) AC adapter (optional) for long-term recording. • When the AC adapter is used, if the commercial power line contains a large amount of noise, the display may show several counts or noise may be present in the output. In such a case, connect the ground terminal or the L terminal of the recorder to the ground. 3.
Chapter 3 Measurement Procedures 61 3.5 Data Hold Function Use this function to hold the current reading. “ ” will light up, and the numerical reading and bar graph will be held. The data hold function is available in any measurement mode. 1. Press the HOLD key; the reading and bar graph will be held. 2. To cancel, press the HOLD key again. • If the HOLD key is pressed while current measurements are being output, the output will not be held.
62 Chapter 3 Measurement Procedures • During RMS measurement in AC A mode or in AC+DC A mode, measurement response time is approximately 8 seconds. If there is a transient change in measurement, some time will be required for the reading to stabilize. 3.6.2 FAST Mode This mode sets the screen update rate to approximately 4 times/second during current or frequency measurement. It is suitable for measurement of abrupt changes such as starting currents.
Chapter 3 Measurement Procedures 63 3.7 Recording Function Use the recording function to hold the maximum measurement, minimum measurement, and mean value of the maximum & minimum. 3.7.1 Measurement Reading Pressing the MAX/MIN key during current or frequency measurements activates the recording function. The 3290 saves the maximum measurement (MAX), minimum measurement (MIN), and mean value (AVE) in internal memory when the MAX/MIN key is pressed.
64 Chapter 3 Measurement Procedures 3.7.2 Display of Elapsed Time When the MAX/MIN key is pressed to activate the recording function, measurement of elapsed time will begin. The elapsed time is displayed when “TIME” is on. The digital readout can display a maximum of 99 hours 59 minutes. Each block of 100 hours is indicated by the illumination of successive bar graph segments. An elapsed time of up to 2099 hours 59 minutes can be so indicated. When the second segment lights up, 100 hours have elapsed.
Chapter 3 Measurement Procedures 65 3.7.5 Disabling the Recording Function To disable the recording function, press the MODE key during current or frequency measurement. If the recording function is disabled, the auto power off function will be enabled ( lights up). However, if the output function is on, the auto power off function will not be enabled. • When minimum and average data is required, start the recording function during measurement.
66 Chapter 3 Measurement Procedures 3.8 Measurement Method Switching Function In AC A mode, the measurement method is selectable between true rms measurement (RMS) and average rectified rms indication (MEAN). RMS provides accurate measurement of distorted waveforms. MEAN provides accurate measurement of sine waves that are not distorted. Press the RMS/MEAN key (SHIFT MODE key) to select the measurement method. 3.8.1 RMS Measurement The true rms measurement uses the rms conversion IC.
Chapter 3 Measurement Procedures 67 3.9 Measurement Response Speed Switching Function When RMS is selected in AC A mode or when measurement is performed in AC+DC A mode, the measurement response speed can be changed. Press the RESPONSE key (SHIFT SAMPL key) to change the speed. Pressing the SAMPL key only changes the screen update rate. The measurement response speed will be changed according to the screen update rate. 3.9.
68 Chapter 3 Measurement Procedures Output Response Waveform (Rise) OUT1: MON output waveform FAST OUT2: REC output waveform 200A 100A AC A mode 200A range: 0A → 180A (45Hz) 0.2 s NORMAL OUT1: MON output waveform OUT2: REC output waveform 200A 100A AC A mode 200A range: 0A → 180A (10Hz) 0.
Chapter 3 Measurement Procedures 69 Output Response Waveform (Fall) FAST OUT1: MON output waveform OUT2: REC output waveform AC A mode 200A range: 200A → 20A (45Hz) 0.2 s NORMAL OUT1: MON output waveform OUT2: REC output waveform AC A mode 200A range: 200A → 20A (10Hz) 0.
70 Chapter 3 Measurement Procedures 3.10 Filter Function The filter function is available in AC A and AC+DC A modes. A low-pass filter (LPF) allows low frequencies to pass through while removing high frequencies. The 3290 sets the cut-off frequency (fc) to approximately 500 Hz. When the filter function is enabled, input current waveforms around 500 Hz can be reduced to –3 dB (attenuation by approx. 30%). (“FILTER” will appear when the filter function is enabled.
71 Chapter 3 Measurement Procedures 3290 Filter Characteristics 5 GAIN )dB) 0 Filter OFF -5 Filter ON -10 -15 10 100 1k Input frequency (Hz) 3.11 Key Lock Function This function locks all keys, including the POWER key, to prevent accidental alteration of the settings. The auto power off function will be disabled. Press the LOCK key (SHIFT HOLD key) to lock. Press it again to unlock. “ ” will appear when the keys are locked. 3.
72 Chapter 3 Measurement Procedures 3.13 Battery Check Function This function uses a bar graph to indicate the remaining battery power. Press the B.CHECK key (SHIFT MAX/MIN key) to display the bar graph. The remaining charge will be indicated as 0%, 25%, 50%, 75%, or 100% for approximately 2 seconds. An indication of 100% means sufficient charge remains. An indication of 0% means battery power is exhausted. When it falls to 0%, the battery-low warning indicator ( ) will appear.
Chapter 3 Measurement Procedures 73 3.14 MON Output Filter Function In DC A or AC+DC A mode, when OUT1 is set to MON, output can be obtained through a low-pass filter (LPF) set to approximately 1 Hz. This function will be useful for outputting a DC component only when an AC component or noise is superimposed on the DC component. Press the MON.FL key (SHIFT OUTPUT key) to enable the function. Press it again to disable the function.
74 Chapter 3 Measurement Procedures 3.15 Auto Power Off Function When approximately 10 minutes have elapsed since the last key operation, the power to the 3290 is automatically turned off. This prevents the 3290 from being left on unintentionally and minimizes battery consumption. When “ ” is displayed, the auto power off function is enabled. “ ” will start blinking and the beep tone will sound for approximately 30 seconds just before power is turned off.
Chapter 3 Measurement Procedures 75 3.16 Setting the Save Function The 3290 is factory-set as shown below. A setting may be edited (for example) by selecting a frequently used mode and saving it. When the setting is saved, the 3290 will be turned on with the saved setting. The saved setting can be changed. With the power on, set the mode, measurement range and other parameters. Hold down the HOLD key for approximately 2 seconds (“ ” will appear).
76 Chapter 3 Measurement Procedures 3.17 Battery-Low Warning If the unit is operated with very low battery power, accuracy cannot be guaranteed. When the battery-low warning indicator ( ) appears, replace all batteries with fresh batteries. If the battery-low warning indicator ( ) appears during long-term current measurement output, it may not be clear which measurements are guaranteed and which are not. If OUT2 is set to B.
Chapter 3 Measurement Procedures 77 If the power is turned off with the battery-low warning indicator ( ) displayed, when power is turned on again, the battery-low warning indicator ( ) may not light up immediately. This is because voltage often increases slightly if a battery is not used for some time. The batterylow warning indicator ( ) will soon light up again. Replace the battery as soon as possible (see Chapter 4 Replacing the Battery). 3.
78 Chapter 3 Measurement Procedures
Chapter 4 Batteries Replacement Batteries Replacement 79 Chapter 4 • To avoid electric shock when replacing the batteries, first disconnect the clamp from the object to be measured. • After replacing the batteries, replace the cover and screws before using the product. • Do not mix old and new batteries, or different types of batteries. Also, be careful to observe battery polarity during installation. Otherwise, poor performance or damage from battery leakage could result.
80 Chapter 4 Batteries Replacement
Chapter 5 AC Adapter AC Adapter 81 Chapter 5 Fully insert the optional 9445-02 AC adapter into the AC adapter connection terminal. • AC adapter input voltage range is 100 to 240 VAC (with ±10% stability) at 50/60 Hz. To avoid electrical hazards and damage to the product, do not apply voltage outside of this range. • For AC adapter operation, use only the Hioki Model 9445-02 or 9445-03 (EU) AC adapter. We cannot accept responsibility for accidents or damage related to the use of any other AC adapter.
82 Chapter 5 AC Adapter • When using the AC adapter, note that current of approximately 3 mA is consumed regardless of whether the power switch of the 3290 is on or off. (Battery power is not consumed, however, when power is turned off.) • When the power supply is switched over from the battery to the AC adapter or vice versa during peak measurement, an inaccurate measurement result (i.e., value larger than the actual value) may be displayed.
Chapter 6 Attaching the Strap Attaching the Strap 83 Chapter 6 Using the 3290 with the strap attached improves operability. 1. 2. Fasten the two straps together into one. 2.Attach each end to the 3290 as shown in the figure above.
84 Chapter 6 Attaching the Strap
Chapter 7 Specifications 85 Chapter 7 Specifications 7.1 Measurement Specifications Measurement Mode DC A AC A (RMS: True RMS, MEAN: Mean Value) AC+DC A (RMS: True RMS) Use with Sensor (The specifications vary depending on the maximum continuous input range and maximum peak current of the sensor used.) • The current measurement ranges of the 3290 are auto range and manual range (L range and H range). The 3290 automatically detects the sensor connected to it.
86 Chapter 7 Specifications Measurement Response Speed The measurement response speed is the time required until the analog output value stabilizes when input is changed from 0% to 90% and from 100% to 10% of the range in true rms measurement (RMS). (1) FAST (0.2 sec) Satisfies the specification at 45 Hz or more. (2) NORMAL (0.8 sec) Satisfies the specification at 10 Hz or more. (3) SLOW (8.0 sec) Satisfies the specification at 1 Hz or more.
Chapter 7 Specifications (rdg. +mV) (2) REC output accuracy (2 V/range) DC FAST AC RMS AC+DC NORMAL SLOW 1 to 10Hz 10 to 45Hz 45 to 66Hz 66 to 1kHz (0.8%+10) (1.3%+5) (0.8%+5) (0.8%+5) (AC +DC (AC +DC (0.8%+5) only) only) AC MEAN - (rdg. +mV) (3) MON output accuracy (2 V/range) DC DC AC+DC 87 1 to 10Hz 10 to 45Hz 45 to 66Hz 66 to 1kHz (0.3%+5) (0.3%+5) AC - (0.3%+5) (0.3%+5) (0.
88 Chapter 7 Specifications 2. Frequency measurement • When input is 5% or larger of the current range (rdg. +dgt.) (1) DIsplay accuracy Range (Accuracy Range) Resolution Maximum display 10Hz (1.00 to 10.00Hz) 0.01Hz 12.50Hz 100Hz (10.0 to 100.0Hz) 0.1Hz 125.0Hz 1000Hz (100 to 1000Hz) 1Hz 1000Hz Range (Accuracy Range) REC 10Hz (1.00 to 10.00Hz) 1000Hz (100 to 1000Hz) (1.0%+1) (rdg. +mV) (2) Output accuracy 100Hz (10.0 to 100.0Hz) (0.3%+1) DC1V/f.s. (1.3%+3) (2.
Chapter 7 Specifications 89 Turning the filter on/off Press the SHIFT PEAK/Hz keys to turn a 500 Hz LPF on and off in AC A and AC+DC A modes. The filter characteristic is -3 dB at 550 Hz ±10%. Recording Press the MAX/MIN key to select the maximum value (MAX), minimum value (MIN), average (AVE), or elapsed time (TIME) to be displayed. Setting the save function Hold down the HOLD key (for more than 2 sec.) to save the current settings. To initialize, hold down the CLEAR key and turn on the POWER key.
90 Chapter 7 Specifications Auto power-off Automatic shutdown occurs after 10.5 ±1 minutes. A beep tone warning sounds before shutdown. You can extend the time or disable the function (by holding down the HOLD key and turning power on). Beep tone ON/OFF (Holding down the PEAK/Hz key and turning power on switches off the beep sound.) Display Liquid crystal display (LCD) Digital counter Max. 3000 counts (current) Max. 1250 counts (frequency) Bar graph display 21 segments Over-range display O.L.
Chapter 7 Specifications Circuit dynamic characteristics (crest factor) 91 Max. 2.5 (The upper limit of H range is the maximum peak current of the sensor connected. The maximum output voltage of L range is 4 V.) Output impedance Max. 100 Ω Temperature char- 0 to 40 range: 0.1 x accuracy specifiacteristics cations/ 32 to 104 range: 0.
92 Options Chapter 7 Specifications 9445-02 AC ADAPTER (SA10-0910N, SINO-AMERICAN) 9445-03 AC ADAPTER (EU) (SA10-0910G, SINO-AMERICAN) 9094 OUTPUT CORD 9400 CARRYING CASE 9691 CLAMP ON AC/DC SENSOR 9692 CLAMP ON AC/DC SENSOR 9693 CLAMP ON AC/DC SENSOR
Chapter 8 Clamp Sensor Specifications Clamp Sensor Specifications 93 Chapter 8 8.
94 Chapter 8 Clamp Sensor Specifications Frequency band DC to 10 kHz (-3dB) Effect of conductor position Within ±1.0% (at 80 A (55 Hz)) Effect of external electromagnetic field 0.5 A equivalent or less (in an external electromagnetic field of 400 A/m) Temperature character- 0 to 40 range: 0.1 x accuracy istics specifications/ 32 to 104 range: 0.
Chapter 8 Clamp Sensor Specifications Applicable standards 95 Safety EN61010 Type A current sensor Measurement categories III (Anticipated Transient Overvoltage: 6000 V), Pollution Degree 2 EMC EN61326 9691 Frequency characteristics 5 0 GAIN (dB) -5 -10 -15 -20 -25 -30 1 10 100 10k 1k 100k Frequency (Hz) 9691 Derating according to frequency 120 Input current (A) 100 80 60 40 20 0 10 100 1k Frequency (Hz) 10k 100k
96 Chapter 8 Clamp Sensor Specifications 8.
Chapter 8 Clamp Sensor Specifications 97 Temperature character- 0 to 40 range: 0.1 x accuracy istics specifications/ 32 to 104 range: 0.18 x accuracy specifications/ Operating temperature 0 to 40 , 32 to 104 , 80% RH or and humidity range less; no condensation Storage temperature range -10 to 50 , 14 to 122 , 80% RH or less; no condensation Location for use Indoor, altitude up to 2000 m (6566 feet) Maximum permitted circuit voltage 600 V Dielectric strength 5.
98 Chapter 8 Clamp Sensor Specifications 9692 Frequency characteristics 5 0 GAIN (dB) -5 -10 -15 -20 -25 -30 1 10 100 10k 1k 100k Frequency (Hz) 9692 Derating according to frequency 250 Input current (A) 200 150 100 50 0 10 100 1k Frequency (Hz) 10k 100k
99 Chapter 8 Clamp Sensor Specifications 8.
100 Chapter 8 Clamp Sensor Specifications Temperature character- 0 to 40 range: 0.1 x accuracy istics specifications/ 32 to 104 range: 0.18 x accuracy specifications/ Operating temperature 0 to 40 , 32 to 104 , 80% RH or and humidity range less; no condensation Storage temperature range -10 to 50 , 14 to 122 , 80% RH or less; no condensation Location for use Indoor, altitude up to 2000 m (6566 feet) Maximum permitted circuit voltage 600 V Dielectric strength 5.
Chapter 8 Clamp Sensor Specifications 101 9693 Frequency characteris 5 0 GAIN (dB) -5 -10 -15 -20 -25 -30 1 10 100 10k 1k 100k Frequency (Hz) 9693 Derating according to frequency 2500 Input current (A) 2000 1500 1000 500 0 10 100 1k Frequency (Hz) 10k 100k
102 Chapter 8 Clamp Sensor Specifications
Chapter 9 Carrying Case 103 Chapter 9 Carrying Case The optional 9400 Carrying Case is used to house the products described below.
104 Chapter 9 Carrying Case You can use the carrying case as follows: 1. Open the carrying case cover and fold it into the bottom of the case, then connect the sensor to the 3290 in the case. 2. Remove the top case of the 3290. With the sensor connected to the 3290, close the carrying case cover and perform measurement. (Make sure that the cables are not compressed by the bulging instruction manual pocket on the rear of the cover when closing the cover.
105 Chapter 10 Troubleshooting Troubleshooting Chapter 10 If the unit seems not to be working normally, check the following points first before requesting service. Batteries Battery metal fittings Unit does not come on. Yes Yes indication appears and unit immediately turns off. Yes indication appears. Yes Unit turns off during use.* Yes Symptom Remedy: If problem persists, request service. Replace batteries. Yes Check connection of batteries to metal fittings.
106 Chapter 10 Troubleshooting If no power is supplied: • If you're using a battery, check that it has sufficient remaining power. (See 3.1: Preparations ) Even when using an unused battery, check the expiration date. A depleted battery may lack sufficient current capacity to drive the 3290. • If you're using the AC adapter, check that it's fully inserted into the AC adapter terminal and socket. • If no power is supplied by the AC adapter but the battery works, the adapter may be defective.
Chapter 10 Troubleshooting 107 The measured value is less (lower) than the estimate. Current Measurement • Check the ends of the clamp sensor for damage. • If the clamp sensor clamps are not closed tightly, the measurement value will be less than the actual value. • Check the frequency of current to be measured to determine whether it is outside the range prescribed in the product specifications. (Note that a high inverter carrier frequency will result in a displayed value less than the total rms.
108 Chapter 10 Troubleshooting The measured value is over than the estimate. Current Measurement • Check the ends of the clamp sensor for damage. • Check that you're using the proper range. • Examine the waveform using MON output function to confirm that no components but the estimated frequency are being used. • Check that the counter has been reset with CREAR before peak measurement. • Look for magnetic fields, electrical fields or possible noise sources near the product.
Chapter 10 Troubleshooting 109 The output value is smaller than the estimated value • Take the same precautionary steps as for the measured value on the counter. • Confirm that the 9094 OUTPUT CORD is properly inserted into the output terminal and check for any broken wires. • Make sure you've selected the proper output mode (REC or MON). • Make sure the previously selected output mode (current or frequency) is not active.
110 Chapter 10 Troubleshooting
Chapter 11 After-sale Service After-sale Service 111 Chapter 11 11.1 Cleaning To clean the product, wipe it gently with a soft cloth moistened with water or mild detergent. Never use solvents such as benzene, alcohol, acetone, ether, ketones, thinners or gasoline, as they can deform and discolor the case. 11.2 Service • If the product seems to be malfunctioning, confirm that the batteries are not discharged before contacting your dealer or Hioki representative.
112 Chapter 11 After-sale Service
Chapter 12 Appendix 113 Chapter 12 Appendix 12.1 Combined Accuracy 12.1.1Accuracy Tables This section shows the accuracy tables when the 3290 is combined with the 9691, 9692, or 9693, and describes the method of calculation. 9691 + 3290 Combined Accuracy (1) Display accuracy ±(%rdg. +A) DC L DC 1.3%+0.10A AC+DC 1.3%+0.12A AC DC H AC+DC to 80A 80A to 100A 1 to 10Hz 2.0%+0.08A 1.3%+0.08A 1.3%+0.5A − 1.3%+0.7A 2.3%+0.3A 2.0%+0.3A AC AC+DC H AC to 80A 80A to 100A 1.3%+0.3A 2.3%+0.3A 2.
114 Chapter 12 Appendix (3) MON output accuracy ±(%rdg. +mV) DC 1 to 10Hz DC L AC+DC 1.3%+10mV 2.3%+10mV − DC AC+DC − to 80A 2.3%+5.5mV 1.3%+5.5mV 80A to 100A 2.8%+5.5mV to 80A AC 2.3%+5.5mV − 80A to 100A 2.8%+5.5mV (4) Peak display accuracy ±(%rdg. +A) DC 1 to 10Hz DC L H AC 1.5%+0.4A 2.5%+0.4A − to 110Ap 1.5%+0.7A 110 to 150Ap to 110Ap 110 to 150Ap 66 to 500Hz − DC AC+DC 10 to 66Hz − AC+DC AC 66 to 500Hz − AC H 10 to 66Hz 2.5%+0.7A 3.0%+0.7A 2.5%+0.7A − 3.0%+0.
Chapter 12 Appendix 115 9692 + 3290 Combined Accuracy (1) Display accuracy ±(%rdg. +A) DC L DC 1.3%+0.10A AC+DC 1.3%+0.12A AC H 1 to 10Hz 10 to 66Hz 2.0%+0.08A 1.3%+0.08A DC 1.3%+0.5A 1.3%+0.7A AC − 2.0%+0.3A 1.3%+0.3A H ±(%rdg. +mV) DC 1 to 10Hz 1.8%+15mV 2.3%+10mV AC − AC+DC 1.8%+10.5mV 2.3%+5.5mV AC − 10 to 66Hz 66 to 1kHz 1.8%+10mV 2.8%+10mV 1.8%+5.5mV 2.8%+5.5mV (3) MON output accuracy ±(%rdg. +mV) DC 1 to 10Hz DC L 10 to 66Hz AC+DC 1.3%+10mV 2.
116 Chapter 12 Appendix 9693 + 3290 Combined Accuracy (1) Display accuracy ±(%rdg. +A) DC DC L AC+DC 10 to 45Hz 45 to 66Hz 66 to 1kHz − 1.8%+1.2A 3.0%+0.8A AC DC 1 to 10Hz 1.8%+1.0A 2.3%+0.8A 1.3%+0.8A 2.3%+0.8A − 1.8%+0.5A − to 1800A 3.0%+3A 2.3%+3A 1.3%+3A 2.3%+3A − − 2.3%+3A 1.3%+3A 2.3%+3A 2.3%+3A − AC+DC 1800A to 1.8%+7A H 2000A to 1800A AC 1800A to 2000A (2) REC output accuracy ±(%rdg. +mV) DC L 1 to 10Hz AC+DC 2.3%+15mV 3.
117 Chapter 12 Appendix (3) MON output accuracy ±(%rdg. +mV) DC DC L AC+DC 1 to 10Hz 1.8%+10mV AC 10 to 45Hz 45 to 66Hz 66 to 1kHz − 2.3%+10mV DC to 1800A AC+DC 1800A to 2000A H − 1.8%+5.5mV 2.3%+5.5mV 1.3%+5.5mV2.3%+5.5mV 2.3%+5.5mV to 1800A AC 1.3%+10mV 2.3%+10mV − − 1800A to 2000A 2.3%+5.5mV (4) Peak display accuracy L 2.0%+4A AC+DC 2.0%+4A AC DC H AC+DC AC 1 to 10Hz 10 to 45Hz 45 to 66Hz 66 to 1kHz − 2.5%+4A − 2.5%+4A 2.0%+4A 2.5%+4A 2.5%+4A 2.0%+4A 2.5%+4A 2.
118 Chapter 12 Appendix 12.1.2Method of Calculation This section describes the method of calculation by assuming that measurement is performed in AC A mode using the 9692. Total error when displayed value is 160.0 A (60 Hz) • Total error = ±(1.3%rdg. + 0.3 A) *1 = ±(2.08 A + 0.3 A) *2 = ±2.3 A • True value when 160.0 A is shown: 157.5 A to 162.3 A *1 See the accuracy at 10 to 66 Hz in AC mode for H range in the 9692+3290 combined display accuracy table on page 102. *2 rdg. error = 160 A x 1.
Chapter 12 Appendix 119 12.2 Use of Intermediate Cable The standard length of the sensor cable is two meters. If the cable is too short, a intermediate cable can be used. Insert the intermediate cable between the clamp sensor cable and the 3290. The cables are available in lengths of 5 m, 10 m, 20 m, 30 m, 50 m, and 100 m. • Note that a long cable may result in a larger value being displayed when no or low input is made due to noise.
120 Chapter 12 Appendix 9692 + intermediate cable + 3290 MON output frequency characteristics 5 0 GAIN (dB) -5 -10 standard -15 -20 -25 -30 1 10 100 1k 10k 100k Frequency (Hz) 9693 + intermediate cable + 3290 MON output frequency characteristics 5 0 GAIN (dB) -5 -10 standard -15 -20 -25 -30 1 10 100 1k Frequency (Hz) 10k 100k
HIOKI 3290 CLAMP ON AC/DC HiTESTER Instruction Manual Publication date: December 2006 Revised edition 5 Edited and published by HIOKI E.E. CORPORATION Technical Support Section All inquiries to International Sales and Marketing Department 81 Koizumi, Ueda, Nagano, 386-1192, Japan TEL: +81-268-28-0562 / FAX: +81-268-28-0568 E-mail: os-com@hioki.co.jp URL http://www.hioki.co.
HEAD OFFICE 81 Koizumi, Ueda, Nagano 386-1192, Japan TEL +81-268-28-0562 / FAX +81-268-28-0568 E-mail: os-com@hioki.co.jp URL http://www.hioki.co.
