Hioki 3285 Instruction Manual
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Hioki 3285 Instruction Manual

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  • Page 1 3285 CLAMP ON AC/DC HiTESTER INSTRUCTION MANUAL GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 2: Table Of Contents

    Contents Introduction Shipping Check Safety Attentions During Use viii Organization of This Manual Chapter 1 Product Outline 1.1 Product Outline 1.2 Features 1.3 Parts and Functions 1.4 Flowchart of Key Operations 1.4.1 Current Measurements Mode 1.4.2 Voltage Measurements Mode 1.4.3 Frequency Measurements Mode 1.5 Modes Chapter 2 Measurement Procedure...
  • Page 3 2.4 Frequency Measurement 2.4.1 Frequency Measurement in Current Mode 30 2.4.2 Frequency Measurement in Voltage Mode 31 2.4.3 Output Function For Frequency 2.5 Auto-Zero-Adjustment/Zero-Cancel Correction Function 2.5.1 Auto-Zero-Adjustment Function 2.5.2 Zero-Cancel Correction Function 2.6 Data Hold Function HOLD 2.7 Alteration of Counter Updates 2.7.1 SLOW mode 2.7.2 FAST mode 2.8 Recording Function REC...
  • Page 4 We have tried to bring this manual as close to perfection as we could achieve. If perchance you find any unclear portions, mistakes, omissions, or the like, we would be most obliged if you could please notify us of them via any HIOKI agent, or directly. ―――――――――――――――――――――――― Introduction GlobalTestSupply www.

  • Page 5: Shipping Check

    In particular, check the accessories, panel switches, keys, and terminals. If the unit is damaged, or fails to operate according to the specifications, contact your dealer or HIOKI representative. Check the 3285 Unit and the Supplied Accessories...

  • Page 6: Safety

    ――――――――――――――――――――――――――― Safety DANGER This instrument is designed to comply with 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 instrument.
  • Page 7 ――――――――――――――――――――――――――― The following symbols in this manual indicate the relative importance of cautions and warnings. Indicates that incorrect operation presents extreme danger of accident DANGER resulting in death or serious injury to the user.　 Indicates that incorrect operation presents a significant hazard that could WARNING result in serious injury or death to the user.
  • Page 8 ――――――――――――――――――――――――――― Safety Symbols symbol printed on the instrument indicates that the user should refer to a corresponding topic in the manual (marked with the symbol) before using the relevant function. In the manual, the symbol indicates particularly important information that the user should read before using the instrument.
  • Page 9 ――――――――――――――――――――――――――― Measurement categories (Overvoltage categories) This instrument complies with CAT III safety requirements. To ensure safe operation of measurement instruments, 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.
  • Page 10 ――――――――――――――――――――――――――― Higher-numbered categories correspond to electrical environments with greater momentary energy. So a measurement device designed for CAT III environments can endure greater momentary energy than a device designed for CAT II. Using a measurement instrument in an environment designated with a higher-numbered category than that for which the instrument is rated could result in a severe accident, and must be carefully avoided.

  • Page 11: Attentions During Use

    ･ When using an AC adapter, use only the specified HIOKI model 9445-02 (SA10-0910N, SINO-AMERICAN) or 9445-03 (for EU) (SA10- 0910G, SINO-AMERICAN). ――――――――――――――――――――――――...
  • Page 12 ――――――――――――――――――――――――――― WARNING ･ To avoid electric shock, do not allow the product to get wet, and do not use it when your hands are wet. ･ To avoid electric shock when measuring live lines, wear appropriate protective gear, such as insulated rubber gloves, boots and a safety helmet.
  • Page 13 ･ Before using the product the first time, verify that it operates normally to ensure that the no damage occurred during storage or shipping. If you find any damage, contact your dealer or HIOKI representative. ･ To avoid damage to the product, do not exceed the...
  • Page 14 ――――――――――――――――――――――――――― CAUTION ･ For the inside memory protection, make sure the power is turned off before plugging in or unplugging the AC adapter. ･ This product is designed for indoor use, and operates reliably from 0 to 40 . ･ Do not store or use the product where it could be exposed to direct sunlight, high temperature or humidity, or condensation.

  • Page 15: Organization Of This Manual

    Organization of This Manual Chapter 1 Product Outline Explains the parts and functions of the unit. Chapter 2 Measurement Procedure Explains how to use the 3285 for measurement. Chapter 3 Specifications Lists the specifications of the 3285 CLAMP ON AC/DC HiTESTER. Chapter 4...

  • Page 16: Chapter 1 Product Outline

    ――――――――――――――――――――――――――― Chapter 1 Product Outline 1.1 Product Outline The 3285 CLAMP ON AC/DC HiTESTER makes it possible to measure DC, AC or AC+DC current in live power lines without tapping into or connecting the lines. Using a one-chip microprocessor, the...

  • Page 17: Features

    ――――――――――――――――――――――――――― 1.2 Features ･ A multi-function microcomputer The built-in microcomputer offers various functions in a compact form. ･ Display of true rms values The true rms value conversion circuit allows accurate measurement of currents with distorted waveforms. ･ Measurement for AC/DC The unit permits measurement of AC superimposed on DC, as well as measurement of half- and full- wave rectification.

  • Page 18: Parts And Functions

    ――――――――――――――――――――――――――― 1.3 Parts and Functions Top and Side View ⑩ ⑰ ① ② ⑪ ③ ⑱ ④ ⑤ ⑥ ⑨ ⑧ ⑦ ⑫ ⑭ ⑯ ⑬ ⑮ ―――――――――――――――――――――――― Chapter 1 Product Outline GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 19 ――――――――――――――――――――――――――― ① POWER ･ Used to turn power on/off ･ To disable the auto power-off function, hold HOLD and press , when you turn power on. POWER ② ･ Switches current modes as follow. DCＡ ACＡ AC+DCＡ ③ RANGE ･ Switches between auto and manual ranges in measurements of current, voltage, or frequency.
  • Page 20 ――――――――――――――――――――――――――― ⑥ SLOW/PEAK/Hz ･ SLOW slows down screen updating (once per three seconds). ･ FAST speeds up screen updating (four times per second). There isn't an annunciator " ". FAST Instead, the unit symbol blinks. ･ PEAK measures peak values (Peak Hold). ･...
  • Page 21 ――――――――――――――――――――――――――― ⑨ 0ADJ/RESET ･ Performs auto-zero-adjustment in DC A, AC+DC A and DC V modes. ･ Resets data when measuring peak values. Reset all the data in a REC function. ･ If zero is not indicated under no input in the AC A, AC+DC A, AC V or AC+DC V modes, press , then press to perform a zero-...
  • Page 22 ――――――――――――――――――――――――――― ⑫ Display (LCD) Direct Current (DC) Alternating Current (AC) Alternating Current and Direct Current (AC+DC) Auto-zero-adjustment or zero-cancel correction function is active Battery low warning Data hold function HOLD Waveform output (AC) is active Recording output (DC) is active Auto power off function AUTO Auto-range...
  • Page 23 ――――――――――――――――――――――――――― Current hour 1 hour/segment (bar graph) 1 minute/segment (bar graph) Input over (bar graph) ⑬ Output terminal Connected to the optional 9094 OUTPUT CORD to provide output during a current measurement or a frequency measurement in a current mode. ⑭...

  • Page 24: Flowchart Of Key Operations

    ――――――――――――――――――――――――――― 1.4 Flowchart of Key Operations 1.4.1 Current Measurements Mode DC A AC A AC+DC A RANGE key AUTO range AUTO range AUTO range 200.0 A range 200.0 A range 200.0 A range 2000 A range 2000 A range 2000 A range SLOW/PEAK/ SLOW SLOW...

  • Page 25: Voltage Measurements Mode

    ――――――――――――――――――――――――――― 1.4.2 Voltage Measurements Mode V key DC V AC V AC+DC V RANGE key AUTO range AUTO range AUTO range 30.00 V range 30.00 V range 30.00 V range 300.0 V range 300.0 V range 300.0 V range 600 V range 600 V range 600 V range SLOW/PEAK/...

  • Page 26: Frequency Measurements Mode

    ――――――――――――――――――――――――――― 1.4.3 Frequency Measurements Mode Current (AC A, AC+DC A) mode Voltage (AC V, AC+DC V) mode SLOW/PEAK/ SLOW FAST PEAK NORMAL Hz key Current mode Voltage mode RANGE key AUTO range AUTO range 10.00 Hz range 10.00 Hz range 100.0 Hz range 100.0 Hz range 1000 Hz range...

  • Page 27: Modes

    ――――――――――――――――――――――――――― 1.5 Modes For voltage and current, three modes are provided: DC (direct current, ), AC (alternating current, and AC+DC (alternating current and direct current, ) modes. Select a proper mode according to the waveform shown below: ―――――――――――――――――――――――― Chapter 1 Product Outline GlobalTestSupply www.
  • Page 28 ――――――――――――――――――――――――――― OUTPUT Input (only for current mode) Mode Display waveform ○Average value displayed (with polarity) Disabled ×Not measurable （ ） ×Not measurable ×Not measurable (zero displayed) ○RMS value （ ） ×Not measurable ○RMS value (without polarity) AC+DC ○RMS value （ ）...

  • Page 29: Measurement Procedure

    ――――――――――――――――――――――――――― Chapter 2 Measurement Procedure 2.1 Preparations 1. Remove the rear cover and insert a battery. (Refer to "Chapter 4 Battery Replacement".) 2. Press to turn the unit on. Verify that all POWER segments of the display light up briefly. Then the model name is shown, and the bar graph indicates the battery condition.

  • Page 30: Current Measurement

    ――――――――――――――――――――――――――― 2.2 Current Measurement ･ Accurate measurement may be impossible in NOTE locations subject to strong external magnetic fields, such as transformers and high-current conductors, or in locations subject to strong external electric fields, such as radio transmission equipment. ･ Make sure that only one conductor is clamped in the center of the clamp sensor.

  • Page 31: Measuring Ac Current (Ac A)

    ――――――――――――――――――――――――――― Wrong Measured conductor Current direction Current direction indicator ･ The DC A mode permits only DC current NOTE measurements that does not include the AC component (see 1.5: Modes). ･ The 200 A range will display up to 250 A, however, only the range from 10 A to 200 A can be displayed with guaranteed accuracy.

  • Page 32: Measuring Ac/Dc Current (Ac+Dc A)

    ――――――――――――――――――――――――――― ･ Depending on ambient temperatures, the counter NOTE would not become zero under no input. If this happens, perform a zero-cancel correction (2.5.2: Zero-cancel correction function). ･ During a f.s. input, the measurement response speed is about 250 ms during rise (0% to 90%) and about 500 ms (100% to 10%) during fall (2.2.5, Figs.
  • Page 33 ――――――――――――――――――――――――――― 5. Open the top ends of the clamp core and clamp the measured conductor so that it passes through the center of the clamp core. ･ Just after suspension of input, or when modes are NOTE switched under no input, the counter would not become zero for about 10 seconds.

  • Page 34: Peak Hold Measurement

    ――――――――――――――――――――――――――― 2.2.4 Peak Hold Measurement 1. Press and select a measurement mode for the measured circuit. 2. In DC A and AC+DC A modes, make an auto-zero- adjustment by 0ADJ/RESET 3. Set to PEAK. The measurement mode is switched as follows. SLOW/PEAK/Hz SLOW FAST...

  • Page 35: Output Function

    ――――――――――――――――――――――――――― ･ In case that the counter doesn't become zero under NOTE no input in peak measurement mode, even though you pressed to reset the peak data, the 0ADJ/RESET clamp sensor may be magnetized. Quit the peak measurement mode, and perform the auto-zero adjustment by .
  • Page 36 ――――――――――――――――――――――――――― switches the output modes. OUTPUT REC (Record output) MON (Waveform output) Light turned off (Auto power-off inactive) (Auto power-off inactive) (Auto power-off active) 4. Set a range based on the unit's measurement range and other instruments, such as recorders. A conversion table for ranges is provided below.
  • Page 37 ――――――――――――――――――――――――――― outputs are analog outputs. The output ･ NOTE response time during a f.s. input differs between rise (0% to 90%, about 250 ms) and fall (100% to 10%, about 500 ms). (Figs 2 and 3) As the measured value is small to the range response time becomes long.
  • Page 38 ――――――――――――――――――――――――――― GAIN [dB] AC+DC A （MON) AC A （MON) 100m 100k FREQUENCY [Hz] Fig. 1 Frequency Characteristics of Current Output ―――――――――――――――――――――――― Chapter 2 Measurement Procedure GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 39 ――――――――――――――――――――――――――― Input wave Output wave 200 A 100 A 250 ms Fig. 2 Waveform of Output Response (Rise) Input wave Output wave 500 ms Fig. 3 Waveform of Output Response (Fall) ―――――――――――――――――――――――― Chapter 2 Measurement Procedure GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 40: Voltage Measurement

    ――――――――――――――――――――――――――― 2.3 Voltage Measurement 2.3.1 Measuring DC Voltage (DC V) 1. Press to display 2. Slide the slide cover up using the slide knob. Next, insert the red test lead to V and the black test lead to COM of the voltage measurement terminal. 3.

  • Page 41: Measuring Ac Voltage (Ac V)

    ――――――――――――――――――――――――――― 2.3.2 Measuring AC Voltage (AC V) 1. Press to display ～. 2. Slide the slide cover up using the slide knob. Next, insert the red test lead to V and the black test lead to COM of the voltage measurement terminal. 3.

  • Page 42: Measuring Ac/Dc Voltage (Ac+Dc V)

    ――――――――――――――――――――――――――― 2.3.3 Measuring AC/DC Voltage (AC+DC V) 1. Press to display 2. Slide the slide cover up using the slide knob. Next, insert the red test lead to V and the black test lead to COM of the voltage measurement terminal. 3.

  • Page 43: Peak Hold Measurement

    ――――――――――――――――――――――――――― ･ Every range will display up to 125% of the range, NOTE however, only the range from 10% to 100% can be displayed with guaranteed accuracy. ･ At any range, gross errors may occur at 1% or below of the range, whose accuracy is not guaranteed, as a result of internal corrective calculations.

  • Page 44: Frequency Measurement

    ――――――――――――――――――――――――――― 2.4 Frequency Measurement 2.4.1 Frequency Measurement in Current Mode 1. Press and select AC or AC+DC, depending on the circuit to be measured. 2. If the current range of the measured circuit is known, set the current range to the manual range. switches the annunciators as SLOW/PEAK/Hz follows.

  • Page 45: Frequency Measurement In Voltage Mode

    ――――――――――――――――――――――――――― ･ The 10 Hz range or 100 Hz range will display up to NOTE 125% of each range, however, only the range from 10% to 100% can be displayed with guaranteed accuracy. ･ does not affect output values. MAX/MIN ･...

  • Page 46: Output Function For Frequency

    ――――――――――――――――――――――――――― ･ At the 100 Hz and 1000 Hz ranges, ---- appears on NOTE the counter when the frequency is lower than 10 Hz. ･ ---- appears on the counter, if the frequency is lower than 1 Hz. ･ O. L. appears on the counter, if the frequency is higher than 1 kHz.
  • Page 47 ――――――――――――――――――――――――――― 2. Press annunciator lights and OUTPUT activates the output function. 3. The auto power-off function is automatically disabled. ( annunciator is tuned off.) 4. Set a range based on the unit's measurement range and other instruments, such as recorders. Range/DIV 10 mV 20 mV 50 mV 0.1 V 0.2 V 0.5 V 1000 Hz range...

  • Page 48: Auto-Zero-Adjustment/Zero-Cancel Correction Function

    ――――――――――――――――――――――――――― ･ For a long term measurement, use the optional NOTE 9445-02 or 9445-03 AC ADAPTER. ･ When the AC adapter is used and there is a large amount of noise in the power line, the display may show several counts or noise may be present in the output.

  • Page 49: Data Hold Function Hold

    ――――――――――――――――――――――――――― ･ If you press again during the auto- 0ADJ/RESET NOTE zero-adjustment in the internal circuit, the auto-zero- adjustment is canceled. ･Do not perform auto-zero adjustment when using auto range in the DC V mode. Always switch to the range you will use (a manual range) before performing the adjustment.

  • Page 50: Alteration Of Counter Updates

    ――――――――――――――――――――――――――― display and the digital display value and bar graph display are maintained. The data hold function is available for all measurements. To cancel the data hold function, press again. HOLD If you press during the data hold function, RANGE the bar graph display the present range.

  • Page 51: Recording Function Rec

    ――――――――――――――――――――――――――― 2.8 Recording Function Use the recording function to hold the maximum and minimum measured values and maximum/minimum averages. 1. Measurement indicated value Pressing the key during measurements of MAX/MIN current or voltage activates the recording function. REC flashes and the product saves the maximum value (MAX), minimum value (MIN), and average value (AVE) in internal memory from the instant you press the...
  • Page 52 ――――――――――――――――――――――――――― When you press the key to activate the MAX/MIN recording function, the bar graph segments flash and the elapsed time appears. When "min" is shown in the right-hand corner of the bar graph, each segment of the bar graph corresponds to one minute.
  • Page 53 ――――――――――――――――――――――――――― the elapsed time is 29 hours. The illustration below shows when one hour, 40 minutes have elapsed. 3. Deactivation of Recording Function Pressing the key deactivates the recording HOLD function. goes on, stops flashing and HOLD goes on, and the elapsed time stops incrementing. While the recording function is being deactivated, data is not updated, even if the clamp sensor is disconnected from the conductor.

  • Page 54: Auto Power-Off Function Aps

    ――――――――――――――――――――――――――― ･ When you need minimum value and average value NOTE data, make sure to activate the recording function during measurement. If the function is activated when there is no input, the minimum value will remain zero. Also, when deactivating the recording function, press the key to terminate HOLD...

  • Page 55: Battery Low Warning

    ――――――――――――――――――――――――――― 2.10 Battery Low Warning ･ When this indication appears, the battery is depleted, which can lead to inaccurate measurements. Replace the battery to ensure accuracy. ･ To check remaining battery life, check the bar graph, when powering on or by pressing .

  • Page 56: Chapter 3 Specifications

    ――――――――――――――――――――――――――― Chapter 3 Specifications 3.1 Measurement Specifications Temperature and humidity 23℃±5℃ (73 ±9 ), for guaranteed accuracy 80% RH or less Guaranteed accuracy period 1 year, or opening and closing of the Clamp Sensor 10,000 times, whichever comes first 3.1.1 Current Measurement Specifications ○...
  • Page 57 ――――――――――――――――――――――――――― ○ Output accuracy ① DC current A (mean value) Range (Accuracy Range) 200A(10.0～200.0A) 1V/f.s. ±(1.3%rdg.+5mV) 2000A(100～2000A) 1V/f.s. ±(1.3%rdg.+5mV) ② AC current Arms (true rms) Range 45～66Hz 10～45,66～1kHz (Accuracy Range) 200A(10.0～200.0A) ±(1.3%rdg.+5mV) ±(2.0%rdg.+5mV) (100～1800A) AC1V/f.s. ±(1.3%rdg.+5mV) ±(2.0%rdg.+5mV) 2000A (1800～2000A) ±(2.3%rdg.+5mV) frequency bandwidth:0.5～15kHz (±3dB) Range 45～66Hz...
  • Page 58 ――――――――――――――――――――――――――― Range DC,45～66Hz 10～45,66～1kHz (Accuracy Range) 200A(10.0～200.0A) ±(1.3%rdg.+10mV) ±(2.0%rdg.+10mV) (100～2000A) DC1V/f.s. ±(1.3%rdg.+10mV) ±(2.0%rdg.+10mV) 2000A (1800～2000A) ±(2.3%rdg.+10mV) Output response (during a f.s. input): Rise response time (0% to 90%) 250 ms or less Fall response time (100% to 10%) 500 ms or less ○...
  • Page 59 ――――――――――――――――――――――――――― ○ Frequency measurement Display accuracy Range Resolution (Accuracy Range) 10Hz(1.00～10.00Hz) 0.01Hz ±(0.3%rdg.+1dgt.) 100Hz(10.0～100.0Hz) 0.1Hz ±(0.3%rdg.+1dgt.) ±(1.0%rdg.+1dgt.) 1000Hz(100～1000Hz) Output accuracy Range (Accuracy Range) 10Hz(1.00～10.00Hz) DC1V/f.s. ±(1.3%rdg.+3mV) DC1V/f.s. ±(1.3%rdg.+3mV) 100Hz(10.0～100.0Hz) 1000Hz(100～1000Hz) DC1V/f.s. ±(2.0%rdg.+3mV) Output response: 4 seconds or less at 1000Hz and 100Hz ranges, 6 seconds or less at 10Hz range ――――――――――――――――――――――――...
  • Page 60 ――――――――――――――――――――――――――― Current Specifications Maximum permissible 2000 Arms continuous, 2840 Amax. current See Fig.4 Effect of conductor within ±0.7% (in any direction from position sensor center) External magnetic AC 400 A/m (external magnetic fields) field interference corresponds to 2 A or less (display) Maximum rated max.

  • Page 61: Voltage Measurement Specifications

    ――――――――――――――――――――――――――― 3.1.2 Voltage Measurement Specifications ○ Voltage display accuracy ① DC voltage V (mean value) Range Resolution (Accuracy Range) 30V(3.00～30.00V) 0.01V ±(1.0%rdg.+3dgt.) 300V(30.0～300.0V) 0.1V ±(1.0%rdg.+3dgt.) 600V(60.0～600V) ±(1.0%rdg.+3dgt.) ② AC voltage Vrms (true rms) Range 45～66Hz 10～45,66～1kHz Resolution (Accuracy Range) 30V(3.00～30.00V) 0.01V ±(1.0%rdg.+3dgt.) ±(1.5%rdg.+5dgt.) 300V(30.0～300.0V)

  • Page 62: General Specifications

    ――――――――――――――――――――――――――― ③ AC+DC voltage V peak (wave peak value) Range DC,45～66Hz 10～45,66～1kHz Resolution (Accuracy Range) 30V(3.0～75.0V) 0.1V ±(1.0%rdg.+7dgt.) ±(1.5%rdg.+7dgt.) 300V(30～750V) ±(1.0%rdg.+7dgt.) ±(1.5%rdg.+7dgt.) 600V(60～1000V) ±(1.0%rdg.+7dgt.) ±(1.5%rdg.+7dgt.) ○ Frequency measurement Hz Display accuracy Range Resolution (Accuracy Range) 10Hz(1.00～10.00Hz) 0.01Hz ±(0.3%rdg.+1dgt.) 0.1Hz ±(0.3%rdg.+1dgt.) 100Hz(10.0～100.0Hz) 1000Hz(100～1000Hz) ±(1.0%rdg.+1dgt.)
  • Page 63 ――――――――――――――――――――――――――― Bar graph display 35 segments Over-range display "O.L." (bar graph) Battery low warning Data hold annunciator HOLD Auto power-off annunciator Units A, V, Hz Zero suppression 5 counts Display update rate Digital counter NORMAL approx. 2 times/second SLOW approx. 1 time/3 seconds FAST approx.
  • Page 64 ――――――――――――――――――――――――――― Applicable standards Safety: EN61010-1:2001 Voltage input: Pollution level 2, measurement category III (expected transient overvoltage: 6000 V) EN61010-031:2002 EN61010-2-032:2002 Type A current sensor EN60529:1991 IP40 (protected against access to hazardous parts with a wire) EMC: EN61326:1997+A1:1998+A2:2001 +A3:2003 EN61000-3-2:2000 EN61000-3-3:1995+A1:2001 Maximum conductor φ55 mm max.
  • Page 65 ――――――――――――――――――――――――――― Options 9445-02 AC ADAPTER (SA10-0910N, SINO-AMERICAN) 9445-03 AC ADAPTER (EU) (SA10-0910G, SINO-AMERICAN) 9094 OUTPUT CORD ―――――――――――――――――――――――― Chapter 3 Specifications GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 66: Chapter 4 Battery Replacement

    ――――――――――――――――――――――――――― Chapter 4 Battery Replacement CAUTION Do not fix the back casing screws too tightly. The torque about 0.5N･m is recommended. 1. Remove the two fastening screws of the rear cover, using a Phillips screwdriver. 2. Remove the rear cover. 3.

  • Page 67: Chapter 5 Ac Adapter (Optional)

    ――――――――――――――――――――――――――― Chapter 5 AC Adapter (Optional) Fully insert the optional 9445-02 AC ADAPTER into the AC adapter connection terminal. ･ The adapter may be used either with or without a NOTE battery. ･ Use of a battery enables continuous measurement if the AC power source temporarily becomes unavailable, due to a blackout or some other reason.
  • Page 68 ――――――――――――――――――――――――――― All the phenomena are likely to happen, in the case NOTE the battery voltage is lower than AC adapter voltage (typ. 9 V) . It is recommended that a new battery should be used, when the blackout seems to be short.

  • Page 69: Chapter 6 Attaching The Hand Strap

    ――――――――――――――――――――――――――― Chapter 6 Attaching The Hand Strap Explains how to attach the hand strap, for easy handling of the unit in the field. ―――――――――――――――――――――――― Chapter 6 Attaching The Hand Strap GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 70: Chapter 7 Troubleshooting

    ――――――――――――――――――――――――――― Chapter 7 Troubleshooting If the unit seems not to be working normally, check the following points first before requesting service. Symptom Battery Battery clip Test leads Unit does not come indication appears and unit immediately turns off. indication appears. Unit turns off during use.* Voltage cannot be...
  • Page 71 ――――――――――――――――――――――――――― ○ If no power is supplied: ･ If you're using a battery, check that it has sufficient remaining power. (See 2.1: Preparations ) ･ If you're using the AC adapter, check that it's fully inserted into the AC adapter terminal and socket. ･...
  • Page 72 ――――――――――――――――――――――――――― ○ The measured value is smaller than the estimated value. Current measurement: ･ Check that the clamp sensor is firmly closed. ･ Check that the frequency of the measured circuit is within the range provided in the specifications. (A smaller value will be displayed for a high inverter carrier frequency.) ･...
  • Page 73 ――――――――――――――――――――――――――― Voltage measurement: ･ Check that the test leads are fully connected. ･ Check that the frequency of the measured circuit is within the range provided in the specifications. ･ Check that the proper steps have been taken, according to the procedure described in 2.5.1: Auto-zero adjustment function and 2.5.2: Zero-cancel correction function.
  • Page 74 ――――――――――――――――――――――――――― ○ The measured value is larger than the estimated value. Current measurement: ･ Check that you're using the proper range. ･ Examine the waveform using output function to confirm that no components but the estimated frequency are being used. ･...
  • Page 75 ――――――――――――――――――――――――――― ○The output value is smaller than the estimated value. ･ Take the same precautionary steps as for the measured value on the counter. ･ Make sure the 9094 OUTPUT CORD is fully connected. ･ Make sure you've selected the proper output mode ( ･...

  • Page 76: Chapter 8 Service

    ･ If the unit is not functioning properly, check the battery. If a problem is found, contact your dealer or HIOKI representative. Pack the unit carefully so that it will not be damaged during transport, and write a detailed description of the problem. HIOKI cannot bear any responsibility for damage that occurs during shipment.
  • Page 77 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 78 HIOKI 3285 CLAMP ON AC/DC HiTESTER Instruction Manual Publication date: September 2006 Revised edition 10 Edited and published by HIOKI E.E. CORPORATION Technical Sales Support Section All inquiries to Sales and Marketing International 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...

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