KYORITSU KEW3551 Instruction Manual
  1. Manuals
  2. Brands
  3. KYORITSU Manuals
  4. Measuring Instruments
  5. KEW3551
  6. Instruction manual

KYORITSU KEW3551 Instruction Manual

Insulation-continuity tester
Hide thumbs Also See for KEW3551:
Table of Contents

Advertisement

Quick Links

Download this manual
Instruction manual
INSULATION - CONTINUITY TESTER
KEW3551/3552/3552BT

Advertisement

Table of Contents
loading

Related Manuals for KYORITSU KEW3551

Summary of Contents for KYORITSU KEW3551

  • Page 1 Instruction manual INSULATION - CONTINUITY TESTER KEW3551/3552/3552BT...

  • Page 2: Table Of Contents

    Contents 1. Safety warnings (Safety precautions) ･･････････････････････････････････1 2. Features ････････････････････････････････････････････････････････････4 3. Specifications ･･･････････････････････････････････････････････････････7 4. Instrument layout ･･････････････････････････････････････････････････ 12 5. Accessories ･･･････････････････････････････････････････････････････ 15 6. Getting started ････････････････････････････････････････････････････ 16 6-1 Attaching metal tip/ adapter for test leads ･･･････････････････････ 16 6-2 Battery voltage check ･･････････････････････････････････････････ 17 7.
  • Page 3 13. Memory function (KEW3552/ 3552BT only) ･･･････････････････････ 37 13-1 Saving method ･･･････････････････････････････････････････････ 37 13-2 Recalling the data ････････････････････････････････････････････ 38 13-3 Deleting the data ･････････････････････････････････････････････ 39 14. Infrared data transmission (KEW3552/ 3552BT only) ･･･････････････ 40 14-1 How to transfer data ･･････････････････････････････････････････ 40 15.

  • Page 4: Safety Warnings (Safety Precautions) ･･････････････････････････････････1

    ● Do not apply voltages above 600 V, including voltage to earth, across the terminals of this instrument. ● KEW3551/3552/3552BT are rated to CAT IV 300 V/ CAT III 600 V.   Do not make measurements under the circumstances exceeding the designed measurement categories.
  • Page 5 ● Never install substitute parts or make any modifications to the instrument.   Send the instrument to your local KYORITSU distributor for repair or re- calibration. ● Do not try to replace batteries if the surface of the instrument is wet.
  • Page 6 Symbols The following symbols are used and marked on the instrument and in this instruction manual. Please carefully check before starting to use the instrument.  Double or reinforced insulation User must refer to the explanations in the instruction manual. ...

  • Page 7: Features ････････････････････････････････････････････････････････････4

    2. Features KEW3551/3552/3552BT can measure insulation resistance, low-resistance, and also AC/ DC voltage. ● LCD backlight and LED spot light to facilitate working at dimly illuminated location or at nighttime work. The built-in illuminance sensor automatically turns on/ off the lights.
  • Page 8 higher than the reference value.   - With elapsed time display Starts counting and displaying testing duration, elapsed time, on the start of insulation resistance measurement.   - DAR/ PI measurement function (available on KEW3552/ 3552BT) Automatically calculates and displays DAR (Dielectric Absorption Ratio) and PI (Polarization Index) values during an insulation resistance measurement.
  • Page 9 Overview of available function list Function KEW3551 KEW3552 KEW3552BT Voltage measurement 20G/40GΩ Range Insulation Insulation status Fixed Pass/ User selectable Pass/ Meas. indicator Fail criteria Fail criteria DAR/ PI Zero ADJ. Low- resistance Meas. Continuity buzzer Backlight Memory Clock (MODEL8212USB)

  • Page 10: Specifications ･･･････････････････････････････････････････････････････7

    3. Specifications ● Measuring range and accuracy (at 23℃±5℃, RH 85% or less) 1. Voltage measurement Range 300.0/ 600 V (auto-ranging) 300.0 V : 0.0 to 314.9 V 600.0 V : 270 to 629 V Display range 300.0 V : ± 0.0 to ± 314.9 V 600 V : ±...
  • Page 11 While 20/ 40GΩ Range is enabled: display MΩ MΩ MΩ MΩ (if disabled, the display is the same as KEW3551) >20.99 GΩ >41.99 GΩ Open-circuit V 100 - 110 % of rated measurement voltage Short-circuit A within 1.5 mA 1.0 - 1.1 mA Rated current @0.05 MΩ...
  • Page 12 ● Applicable ● IEC 61010-1, -2-034 CAT IV 300 V/ CAT III 600 V   standards Pollution degree 2 ● IEC 61557-1, -2, -4, -10 ● IEC 61326-1, 2-2 ● IEC 60529 (IP40) ● EN 50581 (RoHS) ● IEC 61010-031  ...
  • Page 13 ● Operating uncertainty    Operating uncertainty (B) is an error obtained under the nominal operating conditions and calculated with the intrinsic error (A), which is an error of the instrument used, and the error (En) due to variations. According to the standard, IEC 61557, the maximum operating error should be within ±30 %.
  • Page 14 ● Possible number of measurements where battery voltage is within the effective range. (measurement of 5 sec., pause of 25 sec.) Measurement function Test resistor Possible number of measurements 50 V 0.050 MΩ 2000 times or more 100 V 0.100 MΩ 1600 times or more 125 V 0.125 MΩ...

  • Page 15: Instrument Layout

    （ ） measurement. KEW3551: COMP button ⑨ * For KEW3551: also used to turn on/ off insulation status indicator. KEW3552/ 3552BT: * For KEW3552/ 3552BT: also used to make settings of each function. SETUP button A long press ( 1 sec.) while measuring 125 V switches a measurement range to 100 V range;...
  • Page 16 2. Side panel ③ Fig. 4-2 ① ② Name Description ① LINE terminal To connect MODEL7260 test lead. ② EARTH terminal To connect MODEL7261A test lead. Illuminates the measurement spot. The light auto- ③ LED spot light matically turns on/ off depending on the ambient brightness.
  • Page 17 “>” symbol appears when the measured value is exceeding the measuring range, and“<” symbol appears when the measured dc has negative polarity. Appears when 0ΩADJ is done. Appears at Bluetooth communication (3552BT only) Buzzer ON Appears at IR communication (3552/ 3552BT only) Blinks while adjusting time (3552/ 3552BT only) Indicates a DAR value is displayed.

  • Page 18: Accessories

    5. Accessories ● Test leads (1) Teat lead with remote control switch MODEL7260 (red) *1 Barrier Metal tip Attach the supplied detachable cap as necessary. Insulation cap For CAT III 600 V (w/ cap) Fig. 5-1 For CAT II 1000 V (w/o cap) (2) Extension prod MODEL8017A * Attached and used with MODEL7260.

  • Page 19: Getting Started

    6. Getting started 6-1 Attaching metal tip/ adapter for test leads The following metal tips and adapters are user-changeable depending on measurement purposes. (1) For MODEL7260   The following metal tips are available.   1. Standard metal tip ..I n stalle d at a s hip m e nt s u p plie d wit h a detachable insulation cap.

  • Page 20: Battery Voltage Check

    # DANGER To avoid getting electrical shocks, disconnect the test leads from the instrument before replacing the metal tip or adapter. 6-2 Battery voltage check (1) Please refer to 16. Battery replacement in this manual and insert batteries in the instrument. (2) Set the function switch to any position other than OFF to power on the instrument.

  • Page 21: Voltage Measurement

    7. Voltage measurement # DANGER ● Do not apply a voltage exceeding the measuring range, 600 V max., to the instrument. ● Keep your fingers behind the barrier during a measurement. ● Verify proper operation on a known source before taking actions as a result of the indication of the instrument.
  • Page 22 (4) Check the reading on the LCD without pressing the test button nor remote control switch. The instrument detects ac/ dc automatically, and shows “DC” for dc input and “AC” for ac input. ● When negative dc voltage is defected at the line probe side, minus “-”...

  • Page 23: Insulation Resistance Measurement

    8 Insulation resistance measurement This instrument is used to measure insulation resistance of electric appliance or circuit to inspect the insulation performance. Check the voltage rating of the object to be tested before making measurement and select the voltage applied to. Note: ●...

  • Page 24: Measurement Method

    8-1 Measurement method (1) Connect the test leads as the following figure shows.   - MODEL7260 to the LINE terminal   - MODEL7261A to the EARTH terminal Fig. 8-1 Black (2) Confirm that the circuit under test isn’ t energized, and measure voltage with reference to 7.
  • Page 25   Source side Earth terminal Circuit breaker Black Load side Fig. 8-2 Indicates the elapsed time. Fig. 8-3 (6) Auto discharge function This function allows electric charges stored in the capacitance of the circuit under test to be automatically discharged after measurement. Set the test button or remote-control switch to off with the test leads connected.

  • Page 26: Continuous Measurement

    ● Bar graph   Depending on the selected measurement range, values on each tick of bar graph vary as shown below. Bar graph for 500 V/ 1000 V range Fig. 8-4 Bar graph for 50 V/ 100 V/ 125 V/ 250 V range Fig.

  • Page 27: Voltage Characteristics Of Measurement Terminals

    8-3 Voltage characteristics of measurement terminals This instrument conforms to IEC61557. This standard defines that the rated measurement current shall be at least 1 mA, and the lower limit of the insulation resistance maintaining the rated measurement voltage at measurement terminals. (See the table below.) This value is calculated by dividing the rated voltage by rated current.

  • Page 28: 40Gω Range (3552/3552Bt Only)

    8-4 20G/ 40GΩ range (3552/3552BT only) The 20GΩ and 40GΩ ranges are available for measuring 500 V and 1000 V respectively. (This is NOT available on KEW3551.) Enabling/ disabling 2 0 GΩ/ 4 0 GΩ range affects and changes the configurations of 500V and 1000V ranges as shown in the following table.

  • Page 29: Insulation Status Indicator

    This function can be turned off. With KEW 3552/ 3552BT, you can select any desired value as a reference value; the reference values are fixed and unchangeable on KEW 3551 . ● Reference values for KEW3551 Rated voltage 100V...

  • Page 30: Reference Value Settings

    * The setting procedures depend on each model. Please refer to the explanation about the model you’ re using. [KEW3551] (1) Set the function switch to the insulation resistance range you wish to set the reference value. (2) Press the COMP button to toggle the values. The currently selected settings can be checked on the LCD indications.
  • Page 31 (2) Press the cursor key to toggle the reference values. Press the ENTER button to set and save the displayed value as a reference value. The following values are selectable. OFF, 0.100 MΩ, 0.125 MΩ, 0.200 MΩ, 0.250 MΩ, 0.400 Selectable MΩ, 0.500 MΩ, 1.000 MΩ, 10.00 MΩ, 100.0 MΩ, Any values...

  • Page 32: Dar/ Pi Measurement, 1-Min Value Display (Kew3552/3552Bt Only)

    The instrument can measure and calculate DAR (Dielectric Absorption Ratio) and PI (Polarization Index) values automatically during an insulation resistance measurement. (not available on KEW3551) ● The DAR value is displayed in 1 minute and the PI value in 10 minutes after starting a measurement.

  • Page 33: Low-Resistance Measurement (Continuity Check)

    9. Low-resistance measurement (Continuity check) # DANGER Do not apply voltage to the low resistance range. Always check the circuit or equipment under test is surely de-energized before starting a measurement. 9-1 Zero Ω ADJ. function This function is to null the resistances (up to 3 Ω) of the test lead or internal circuit to display the resistance of the equipment under test only.

  • Page 34: Lcd Backlight, Led Light, Buzzer

    Fig. 9-1 ● If a current of 200 mA or higher is detected on the object under test, the continuity buzzer sounds to indicate that there is continuity. If you wish to disable this continuity buzzer, please refer to 10. LCD backlight, LED light, Buzzer.

  • Page 35: Buzzer

    10-2 Buzzer Buzzer sounds when: 1. powering on the instrument, 2. turning the function switch or pressing any button, 3. measured current is 200 mA or higher at low-resistance measurement,   (Continuity buzzer) 4. selecting 1000V range, 5. live circuit warning is activating, and 6.
  • Page 36 [KEW 3551] (1) Get the instrument into setting mode.   1. Ensure that the instrument is powered off. Hold down the 0ΩADJ button.   2. Keep the 0ΩADJ button held down, and set the function switch to V/ Ω position. The instrument wakes up and the LCD segments start blinking to indicate now the instrument is in setting mode.
  • Page 37 (3) Power off the instrument when setting completes. (The latest settings are saved and won’ t be cleared even after powering off the instrument.) [KEW 3552/ 3552BT] (1) Get the instrument into setting mode.   1. Set the function switch to any position other than low-resistance measurement, and then hold down the SETUP button ( 2 sec.) while in the stand-by mode.

  • Page 38: Auto-Power-Off

    11. Auto-power-off To prevent the instrument being left powered on and conserve battery power, the instrument automatically turns off approx. 10 min. after the last switch operation with audible buzzer sound. To turn on the instrument, turn the function switch to “OFF” position first, then set it to the desired range. This auto-power-off function doesn’...

  • Page 39: Clock Setting (Kew3552/ 3552Bt Only)

    12. Clock setting (KEW3552/ 3552BT only) This instrument has an internal clock and can save the measured data with time information. (Not available on KEW3551.) 12-1 Setting (1) Get the instrument into setting mode.   1. Set the function switch to any position other than low-resistance measurement, and then hold down the SETUP button ( 2 sec.) while...

  • Page 40: Memory Function (Kew3552/ 3552Bt Only)

    This instrument can save voltage, insulation resistance, and low-resistance measurement results in the internal memory, 1000 results max. Data can be saved with two different site number for easy recognition. (Not available on KEW3551.) ● Data to be saved:   Measured voltage, insulation resistance, and low-resistance, DAR/ PI, 1-min value, time and date, measurement function, and the data and site no.

  • Page 41: Recalling The Data

    (3) Use the cursor key and select “ SITE No. 1” , and press the ENTER button to confirm. Blink Fig. 13-2 (4) Use the cursor key and select “ SITE No. 2” , and press the ENTER button to confirm.

  • Page 42: Deleting The Data

    13-3 Deleting the data (1) Hold down the MEMORY button ( 1sec.) in stand-by mode, and recall the saved data. (2) Use the cursor key to select the data no. you wish to delete. To delete all the saved data, select “ALL” . ( “ALL” is displayed between “0” and “999”...

  • Page 43: Infrared Data Transmission (Kew3552/ 3552Bt Only)

    14. Infrared data transmission (KEW3552/ 3552BT only) The internal memory data can be transferred to PC by using the optical adapter MODEL8212 USB. (Not available on KEW3551.) 14-1 How to transfer data (1) Ensure that the special application “KEW Report” has been installed in your PC.

  • Page 44: Bluetooth Communication (Kew3552Bt Only)

    15-1 Bluetooth communication KEW3552BT has a Bluetooth communication function and can exchange data with Android/ iOS tablet devices. (Not available on KEW3551/ 3552.) Before starting to use this function, download the special application “KEW Smart for KEW3552BT” via the internet.

  • Page 45: Kew Smart For Kew3552Bt

    15-2 KEW Smart for KEW3552BT The special application “KEW Smart for KEW3552BT” is available on download site for free. (An Internet access is required.) Please note that communication charge is incurred separately for downloading applications and using special features of them. For your information, “ KEW Smart for KEW3552BT”...

  • Page 46: Battery Replacement

    16. Battery replacement Replace batteries with new ones when the battery indicator shows “ ” ; battery level is almost empty. # DANGER ● Do not open the battery compartment cover if the instrument is wet. ● Never attempt to replace batteries during a measurement. When opening the battery compartment cover, ensure that the instrument is powered off and no test leads are connected to, in order to avoid getting electrical shock.

  • Page 47: Shoulder Strap Belt Attachment

    17. Shoulder strap belt attachment Strap belt is supplied with this instrument to suspend from the neck to allow both hands to be used freely for easy and safe operation. Fig. 17-1 18. Storing in carrying case Store the instrument and test leads as the following figure shows. Test leads compartment Partition Flat test bar...
  • Page 48 DISTRIBUTOR Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations. 06-18 92-2339...

This manual is also suitable for:

Kew3552Kew3552bt

Table of Contents