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Summary of Contents for KYORITSU KEW 3021A
- Page 1 Instruction manual INSULATION - CONTINUITY TESTER KEW 3021A・3022A・3023A KYORITSU ELECTRICAL INSTRUMENTS WORKS,LTD. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
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Page 2: Table Of Contents
Contents 1．Safety warnings ……………………………………………………１ 2．Features ……………………………………………………………４ 3．Specification ………………………………………………………５ 4．Instrument layout …………………………………………………９ 5．Preparation for measurement ……………………………………10 5 − 1 Test lead connection ………………………………………10 5 − 2 Checks on Test lead and Fuse …………………………10 ……………………………………………………11 6．Measurement 6 − 1 Voltage measurement(Mains disconnection check) …11 6 − 2 Insulation resistance measurement ……………………11 6 −... -
Page 3: 1．Safety Warnings
Understand and follow all the safety instructions contained in the manual. Failure to follow the instructions may cause injury, instrument damage and/or damage to equipment under test. Kyoritsu is by no means liable for any damage resulting from the instrument in contradiction to this cautionary note. - Page 4 N ever rotate the Range selector switch with the test leads connected to the equipment under test. D o not install substitute parts or make any modification to the instrument. Return the instrument to your local KYORITSU distributor for repair or re-calibration in case of suspected faulty operation. N ever touch the circuit under test during/immediately after the insulation resistance measurement.
- Page 5 Symbols Danger of possible electric shock Instrument with double or reinforced insulation 〜 Earth terminal Refer to the instructions in the manual to protect the user and instrument. This instrument satisfies the marking requirement defined in the WEEE Directive. This symbol indicates separate collection for electrical and electronic equipment.
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Page 6: 2．Features
２．Features KEW3021A/3022A/3023A are four-range digital insulation resistance testers for testing low-voltage installation below 600V.Resistance measurement with audible Continuity check function is also available. Designed to following safety standards: IEC61010-1(CAT III 600V Pollution degree 2) IEC61010-031 (Requirements for hand-held probes) ... - Page 7 ３． Specification Applicable standards IEC 61557-1,2,4 IEC 61010-1, -2-030 Masurement CAT III 600V Pollution degree2 (Location for use: altitude 2000m or less, indoor use) IEC 61010-031 IEC 60529 IP40 EN 61326-1 (EMC) EN 50581 (RoHS) Measuring range and accuracy <Insulation resistance range>...
- Page 8 KEW3023A Nominal voltage 1000V 500V 250V 100V 0〜4/40/200MΩ Auto Range 0〜4/40/400/2000MΩ Open circuit Nominal test voltage 100%~120% voltage Short circuit Within 1.5mA current 1MΩ 0.5MΩ 0.25MΩ 0.1MΩ Nominal test current 1mA 0%〜＋20% effective 0.200〜 0.200〜 0.200〜 0.200〜 measurement 1000MΩ 200.0MΩ 40.00MΩ...
- Page 9 <Resistance range> Auto-range 0〜40.00/ 400.0Ω Open-circuit voltage(DC) 5V±20% Short-circuit current DC200mA or more Measuring range to keep 0.2〜400Ω/ ±(2%rdg + 8dgt) operating error/ tolerance Outside of the measuring range to 0〜0.19/Ω0.1Ω keep operating error/ tolerance <Voltage range> 20 〜 600V Measured voltage ±...
- Page 10 MODEL KEW3021A / 3023A KEW3022A Continuity range AC 440V / 1min. AC 440V / 1min. Insulation All ranges : All ranges:AC1200V / 10sec. resistance AC600V / 10sec. AC voltage AC720V / 10sec. AC720V / 10sec. Auto-ranging: Range shifts to upper range : when a reading go over 4200 Range shifts to lower range : when a reading go to less than 320 Dimension : approx.
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Page 11: 4．Instrument Layout
４．Instrument layout Fig. 2 Instrument layout (KEW3021A) Protective figerguard： It is a part providing protection against electrical shock and ensuring the minimum required air and creepage distances. ① Test button ② Range selector switch ③ ENTER key ④ MEM key ⑤... -
Page 12: 5．Preparation For Measurement
LCD when shorting the LINE(red) and EARTH(black). (3) Test lead or instrument itself may have troubles when "OL" is displayed on the LCD after replacing the fuse. In this case, send the instrument to your local KYORITSU distributor for repair. DANGER ... -
Page 13: 6．Measurement
６．Measurement 6-1 Voltage measurement (Mains disconnection check) (1) Connect the Earth probe to the earth of the circuit under test and Line probe to the other side. If the circuit is not earthed, connect Earth probe to any appropriate conductor. (2) Take the reading on the LCD without pressing the Test button or Remote control switch. - Page 14 Note: Some circuits have an unstable insulation resistance, which causes the reading to vary during measurement. T h e i n s t r u m e n t m a y g e n e r a t e a h i g h p i t c h t o n e d u r i n g measurement.
- Page 15 (2) Connect the Earth probe to the earth terminal of the circuit under test. If the circuit is not earthed, connect the Earth probe to any appropriate conductor. (3) Connect the Line probe to the circuit under test and press the Test button or Remote control switch.
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Page 16: Continuous Measurement
(6) Set the Range selector switch to the OFF position, and disconnect the probes from the instrument. DANGER N ever touch the circuit under test immediately after testing. Capacitance stored in the circuit may cause electric shock. Leave the test leads connected to the circuit until the LIVE LED and LIVE circuit warning stop flickering. -
Page 17: Measurement Of Resistance (Continuity Check)
KEW3021A KEW3022A KEW3023A Fig. 9 6-5 Measurement of resistance (Continuity check) DANGER Do not apply voltage to the resistance range. Always test the circuit o r e q u i p m e n t t o e n s u r e i t i s s u r e l y d e - e n e r g i z e d b e f o r e measurement. -
Page 18: Backlight Function
Releasing: (1) Set the Range selector switch to theΩ(Continuity) position. (2) Open the test leads: LINE (red) and EARTH (black). (3) Press the Zero Ω ADJ. to release this function when "OL" is displayed on the LCD while the Test button is locked or the Remote control switch is pressed down . -
Page 19: Functions Keys
7．Functions keys 7-1 Comparator function Set a reference resistance value at the insulation resistance range. The measured value is compared to the pre-set reference value, and the mark of is displayed on the LCD and buzzer Settable reference value: 0.1/0.2/0.25/0.4/0.5/1/2/3/5/10/20/30/50/100/Any : Unit [MΩ] The upper limit of "... -
Page 20: 8．Fuse & Battery Replacement
number displayed at the lower left flickers.Select any memory number with the UP or DOWN key, and press the key. (2) Then, the measurement result displayed at the middle on the LCD flickers. Press the key to save the result.It will be saved to the internal memory, and the memory number is increased by 1. -
Page 21: Fuse Replacement
(3) Always replace all six batteries with new ones at the same time. (4) Screw the battery compartment lid back on before using the instrument. SCREW 8-2 Fuse Replacement (1) Disconnect the test probe from the FUSE instrument. BATTERY (2) Open the battery compartment cover SPARE FUSE by unscrewing the metal captive. -
Page 22: Neck Strap And Cord Case
9-2 Neck strap and Cord case This instrument is equipped with a strap to suspend from the neck to allow both hands to be used freely for easy and safe operation. Fig. 15 9-3 Test prods and replacement 1. Types of Test prods MODEL8072: Standard Test prod Used for ordinary measurement. -
Page 23: 10．Cleaning Of The Instrument
2. How to replace Adaptors To remove the adaptors, pull them out. Then firmly attach the adaptor as desired to the tip of the Earth cord. Safety alligator clip Fig. 17 Test bar DANGER Disconnect the test leads from the instrument before replacing the test prods of the Line probe or the adaptors of the Earth cord in order to avoid a possible electric hazard.
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