Related Manuals for Kyoritsu Electrical Instruments Works KEW MEG 3161A
Summary of Contents for Kyoritsu Electrical Instruments Works KEW MEG 3161A
- Page 1 Instruction manual Compact Insulation resistance tester with 2-range KEW MEG series MODEL3161A KYORITSU ELECTRICAL INSTRUMENTS WORKS,LTD.
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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．Preparation for measurement ……………………………………９ 5－1 Mechanical zero adjustment ………………………………９ 5－2 Test lead connection ………………………………………９ 5－3 Battery voltage check ………………………………………10 5－4 Power-on-indication LED …………………………………10 6．Measurement ………………………………………………………11 6－1 AC voltage measurement …………………………………11 (Mains disconnection check) 6－2 Insulation resistance measurement ………………………12 6－3 Continuous measurement …………………………………14... -
Page 3: 1．Safety Warnings
１．Safety warnings ○ This instrument has been designed, manufactured and tested according to IEC 61010-1: Safety requirements for Electronic Measuring apparatus, and delivered in the best condition after passed the inspection. 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 ◦ N ever make measurement on a circuit in which the electrical potential exceeds AC/DC600V(Measurement CAT III 300V/CAT II 600V). ◦ D o 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 CAUTION ◦ A lways set the Range switch to the appropriate position before making measurement. ◦ S et the Range switch to "OFF" position after use and remove the test leads. The instrument consume small current at any range other than OFF, and it shortens the battery life.
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Page 6: 2．Features
２．Features MODEL3161A is a two-range insulation resistance tester for testing various elevators and safety equipments. ¡ Designed to following safety standards: IEC 61010-1, IEC 61010-031, IEC 61557 (500V/ 100MΩ only) ¡ Small and light weight. ¡ Auto-discharge function When insulation resistance like a capacitive load is measured, electric charges stored in capacitive circuits are automatically discharged after measuring. -
Page 7: 3．Specification
3．Specification ３．Specification ◦ A pplicable standards IEC 61557 (except for 15V/ 20MΩ range) ¡ Applicable standards IEC 61010-1, IEC 61010-2-030 IEC 61557 (except for 15V/ 20MΩ range) Measurement CAT III 300V/ CAT II 600V Pollution degree2, Protection class II IEC 61010-1 Measurement CAT.III 300V/ CAT.II 600V Location for use: altitude 2000m or less Pollution degree2, Protection class II... - Page 8 <Operating error> Operating error (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 IEC61557, the maximum operating error should be within +/-30%.
- Page 9 Temperature & humidity : 0℃ ～ 40℃ (RH: 85% or less) : 0℃ 〜 40℃ (RH: 85% or less) Temperature & humidity range (no condensation) range (no condensation) Storage temperature & : -20℃ ～ ＋60℃ (RH: 75% or less) : -20℃ 〜 ＋60℃ (RH: 75% or less) Storage temperature &...
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Page 10: 4．Instrument Layout
4．Instrument layout Fig. 1 Instrument layout Protective figerguard: It is a part providing protection against electrical shock and ensuring the minimum required air and creepage distances. MODEL7139A ① Meter zero adjuster ② Test button ③ Scale plate ④ Pointer ⑤ Insulation resistance scale ⑥... -
Page 11: 5．Preparation For Measurement
5．Preparation for measurement 5-1 Mechanical zero adjustment With the Range switch set to the OFF position and without pressing the Test button, turn the Zero adjuster with a screwdriver so that the pointer lines up with the "∞" mark on an insulation resistance scale. -
Page 12: 5－3 Battery Voltage Check
5-3 Battery voltage check (1) Connect the test lead to the instrument, and set the Range switch to the BATT. CHECK position. (2) Press the Test button or Remote control switch. (3) If the meter pointer does not move to BATT GOOD, replace the batteries as shown in Section 7 "Battery replacement". -
Page 13: 6．Measurement
6．Measurement 6-1 AC voltage measurement (Mains disconnection check) The AC voltage measurement function is available on any ranges. (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. -
Page 14: 6－2 Insulation Resistance Measurement
< Simplified measurement of DC voltage > This instrument also provides simplified measurement of DC voltage. Multiplying 0.9 by the indicated value at AC voltage scale provides the DC voltage value. However, the polarity isn't indicated. DC voltage (V) = Indicated value at AC voltage scale x 0.9 (V) 6-2 Insulation resistance measurement Before performing any insulation test, check the maximum voltage that may be applied to the circuit under test. - Page 15 (1) Check the maximum voltage that may be applied to the circuit under test. Set the Range switch to a desired insulation resistance range. (2) Connect Earth probe to the earth terminal of the circuit under test. If the circuit is not earthed, connect Earth probe to any appropriate conductor.
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Page 16: 6－3 Continuous Measurement
<Auto discharge function> This function allows electric charges stored in the capacitance of the circuit under test to be automatically discharged after testing. Discharge can be monitored by the AC voltage reading. (6) Set the Range switch to the OFF position, and disconnect the probes from the instrument. - Page 17 M-3161A Output characteristics — 15 — ― 15 ―...
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Page 18: 6－5 Backlight Function
6-5 Backlight function To facilitate working in dimly lit situations, a backlight function is provided which illuminates the scale plate. Press the backlight switch to operate this function. The backlight will light up for about 30 sec., and then turned off automatically. 7．Battery replacement DANGER Never open the Battery cover during a measurement. -
Page 19: 8．Notes On Housing Case And Accessories
(1) Set the Range switch to "OFF" position, and remove the test leads from the instrument. (2) Loosen the Battery-cover-fixing screws, and remove the Battery cover. Always replace all 4 batteries with new one at the same time. (3) After replacing batteries, be sure to tighten up the screws for Battery cover. -
Page 20: 8－2 Neck Strap And Cord Case
8－2 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. — 18 — ― 18 ―... -
Page 21: 8－3 Test Prods And Replacement
8 － 3 Test prods and replacement 1. Types of Test prods MODEL8072:Standard Test prod Used for ordinary measurement. (Attached to the Line probe at the time of purchase.) MODEL8017:Extension probe Used in difficult-to-reach situations. MODEL8016:Pickle prod (Optional) Used to hook the probe on a conductor. 2. -
Page 22: 8－4 Adaptors For The Earth Cord And Replacement
8−4 Adaptors for the Earth cord and replacement 1. Adaptors MODEL7131B:Safety alligator clip Connected to the Earth terminal of the Earth terminal board. MODEL7161A:Flat test bar Connected to the earth side of the outlet. 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. -
Page 23: 8－5 Cleaning Meter Cover
8 － 5 Cleaning Meter cover This instrument is managed by our company's quality standard and is delivered in the best condition after passed the inspection. But in the dry time of winter static electricity sometimes builds up on the meter cover due to the characteristic of plastic. - Page 24 DISTRIBUTOR 2-19 92-1647A...
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