Related Manuals for Kyoritsu Electrical Instruments Works KEW 4300
Summary of Contents for Kyoritsu Electrical Instruments Works KEW 4300
- Page 1 Instruction Manual Simplified Earth Tester KEW 4300 PowerMeterStore 1.888.610.7664 www. .com Shop for Power Metering products online at:...
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Page 2: Table Of Contents
Contents 1. Safety warnings ･････････････････････････････････････････ 1 2. Features ･･･････････････････････････････････････････････ 4 3. Specification ････････････････････････････････････････････ 5 4. Instrument layout ････････････････････････････････････････ 8 5. Accessories ･ ･･･････････････････････････････････････････ 10 6. Getting started ･････････････････････････････････････････ 11 6-1 Battery voltage check ･･･････････････････････････････ 11 6-2 Attaching Metal tip/ adapter ･･････････････････････････ 11 7. Voltage measurement ･･･････････････････････････････････ 13 7-1 Measurement procedure･････････････････････････････... -
Page 3: Safety Warnings
1. Safety warnings This instrument has been designed and tested according to IEC Publication 61010: Safety Requirements for Electronic Measuring Apparatus. This instruction manual contains warnings and safety rules which must be observed by the user to ensure safe operation of the instrument and retain it in safe condition. - Page 4 # DANGER ● Never make measurement on a circuit in which the electrical potential exceeds 300V. ● Do not attempt to make measurement in the presence of flammable gasses. Otherwise, the use of the instrument may cause sparking, which can lead to an explosion. ●...
- Page 5 Symbols Instrument with double or reinforced insulation User must refer to the explanations in the instruction manual. (Functional) Earth terminal Crossed-out wheel bin symbol (according to WEEE Directive: 2002/96/EC) indicating that this electrical product may not be treated as household waste, but that it must be collected and treated separately.
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Page 6: Features
2. Features KEW4300 is a simplified earth resistance tester (based on 2-pole method) that can be used for various distribution lines and electrical appliances and it also can measure AC/DC voltages. (As for AC voltages, true rms values can be obtained.) ●... -
Page 7: Specification
3. Specification ● Measurement range and accuracy (23ºC±5Cº, relative humidity 75% or less) Voltage/ Earth voltage measurement Measurement range Display range Accuracy AC5.0 to 300.0V (45 to 65Hz) 0.0 to 314.9V ±1%rdg±4dgt (425V peak or less) DC±5.0 to ±300.0V 0.0 to ±314.9V ±1%rdg±8dgt *AC measurement method : rms detection For the waveforms other than sinewave... - Page 8 ● Applicable ● IEC 61010-1 standards ● IEC 60529(IP40) ● IEC 61557-1, -5 ● IEC 61326-1, 2-2 ● IEC 61010-031 MODEL7248 / CAT III600V (Alligator clip should be attached and used in the CAT III or higher environment.) MODEL8253 / CAT III300V (while it is connected to the instrument) * When the test leads are connected to the instrument, the lower category either of...
- Page 9 ● Operating Error Operating error (B) is an error obtained within the rated operating conditions, and calculated with the intrinsic error (A), which is an error of the instrument used, and the error (Ei) due to variations. According to IEC61557, the maximum operating error should be within ±30%.
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Page 10: Instrument Layout
4. Instrument layout (1) Instrument Body Fig. 4-1 Name Details To connect the replaceable metal tip MODEL8072 1 H+S(C+P) terminal has been installed and delivered. To illuminate the measurement spots 2 LED light The light turns on/off automatically in relation to ambient brightness. - Page 11 (2) LCD Fig. 4-2 ● Symbols displayed on the LCD Indicate the batteries need to replace. Show the measured results. Appear when the measured result exceeds the display range. Resistance : >2099Ω Voltage : > 314.9V (“-OL” for negative DC voltages) Indicate the end of a measurement with frozen measured result.
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Page 12: Accessories
5. Accessories ● Test leads (1) MODEL7248 – with Alligator clip and Flat test bar (2) Banana plug, both ends, black L-shaped Banana plug ＋ Fig. 5-1 (3) Alligator clip (4) Flat test bar Protective fingerguard ＋ Fig. 5-2 Fig. 5-3 ● Tip metal tips for H+S(C+P) terminal (1) MODEL8072 Standard metal tip installed at a shipment. -
Page 13: Getting Started
6. Getting started 6-1 Battery voltage check (1) Please refer to “10. Replacing batteries” in this manual and insert batteries in KEW4300. (2) Hold down the Power button at least 1 sec and power on KEW4300. * A long press of 1 sec or longer is required to power on/ off the instrument. - Page 14 [How to replace the parts] Detach the metal tip by turning the red plastic parts counter clockwise. Install the metal tip you want to use into the hexagon hole, and turn the red plastic parts clockwise to tighten firmly. MODEL 8072 MODEL 8253 Hexagon 六角穴...
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Page 15: Voltage Measurement
7. Voltage measurement # DANGER ● Never apply voltages exceeding 300V, max over-voltage protection, to this instrument. ● Keep your fingers and hands behind the protective fingerguard during measurement. 7-1 Measurement procedure (1) Connect the test leads to the instrument. Plug the L-shaped Banana plug of MODEL7248 into the E terminal as illustrated below. -
Page 16: Live Circuit Warning
(3) The measured voltage is displayed on the LCD. Take the reading without pressing the Test button. The instrument judges DC or AC and shows “DC” or “AC” sign on the LCD. * When negative DC voltages are detected at the H+S(C+P) terminal, the negative polarity sign “-“... -
Page 17: Earth Resistance Measurement
8. Earth resistance measurement This instrument can measure the earth resistances of distribution line, internal wiring and electrical appliance. # DANGER ● Never apply inputs exceeding 300V between the measuring terminals at earth voltage measurements. ● No voltage should be applied between the measuring terminals during earth resistance measurements. -
Page 18: Measurement Procedure
8-2 Measurement procedure (1) Connect the test leads to the instrument. Plug the L-shaped Banana plug of MODEL7248 into the E terminal as illustrated below. Fig. 8-2 (2) Connection Connect the instrument as illustrated below. POWER H+S(C+P) LOAD Fig. 8-3 M easuring the earth resistance Fig. 8-4 ... - Page 19 ● The displayed value should be less than 10V. The warning LED starts blinking yellow when the earth voltage is 10V or higher. (The LED starts blinking at 3V or higher if the frequency of the earth voltage is 400Hz.) LED starts blinking.
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Page 20: Lcd Backlight And Led Light
9. LCD backlight and LED light The LCD backlight and the LED light on this instrument turn on/off automatically in relation to ambient brightness. These lights keep on for about 15 sec once they turn on. The Ambient light sensor as shown in the below figure senses the ambient brightness. -
Page 21: Replacing Batteries
10. Replacing batteries When the Battery symbol appears on the LCD, replace the batteries with new ones. # DANGER ● Never open the Battery compartment cover if the instrument is wet. ● Do not attempt to replace batteries during a measurement. In order to avoid getting an electrical shock, ensure that the instrument is powered off and the test leads are disconnected from the instrument before replacing the batteries.
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