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Applicable standards
IEC 61557

IEC 61010-1 Measurement CAT.III 600V Pollution degree2

Protection class II

Location for use: altitude 2000m or less

IEC 61010-031
IEC 60529

IP40

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Measuring range and accuracy 
<Insulation resistance range>

MODEL3321A

* Heavy-line circular arc on the scale indicates the primary effective

measuring ranges. (guaranteed accuracy range)

MODEL3322A

* Heavy-line circular arc on the scale indicates the primary effective

measuring ranges. (guaranteed accuracy range)

― 4 ―

3.Specification

Nominal voltage
Max. effective scale value
Mid-scale value
Accuracy in primary 
effective measuring ranges
Accuracy in primary 
effective measuring ranges
Accuracy at 0 and ∞
Accuracy at no-load 
voltage
Nominal current
Short-circuit current

250V

50MΩ

1MΩ

0.05〜20MΩ

within ±5% of indicated value

Measuring ranges other than above, 0 and ∞.

within ±10% of indicated value

within ±0.7% of scale length

0%〜+20% of nominal voltage

1mA 0%〜+20%

within 1.5mA

500V

100MΩ

2MΩ

0.1〜5MΩ

1000V

2000MΩ

50MΩ

2〜1000MΩ

Nominal voltage
Max. effective scale value
Mid-scale value
Accuracy in primary 
effective measuring ranges
Accuracy in primary 
effective measuring ranges
Accuracy at 0 and ∞
Accuracy at no-load 
voltage
Nominal current
Short-circuit current

125V

20MΩ

0.5MΩ

0.02〜10MΩ

within ±5% of indicated value

Measuring ranges other than above, 0 and ∞.

within ±10% of indicated value

within ±0.7% of scale length

0%〜+20% of nominal voltage

1mA 0%〜+20%

within 1.5mA

250V

50MΩ

1MΩ

0.05〜20MΩ

500V

100MΩ

2MΩ

0.1〜50MΩ

Содержание 3321A

Страница 1: ...Instruction manual KEW MEG series MODEL3321A 3322A 3323A Compact Insulation resistance tester with 3 range KYORITSU ELECTRICAL INSTRUMENTS WORKS LTD...

Страница 2: ...measurement 10 Mains disconnection check 6 2 Insulation resistance measurement 12 6 3 Continuous measurement 14 6 4 Output voltage characteristics 14 6 5 Using guard terminal only for MODEL3321A 16 6...

Страница 3: ...whenever necessary The instrument is to be used only in its intended applications Understand and follow all the safety instructions contained in the manual It is essential that the above instructions...

Страница 4: ...bstitute 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 Never touch the ci...

Страница 5: ...matically discharged after measuring Discharge can be checked with the meter Color coded scales for easy and correct reading Power on indicator on insulation resistance and battery check ranges Backli...

Страница 6: ...y effective measuring ranges Accuracy at 0 and Accuracy at no load voltage Nominal current Short circuit current 250V 50M 1M 0 05 20M within 5 of indicated value Measuring ranges other than above 0 an...

Страница 7: ...ging the Battery voltage 3 Variation due to changing the position Nominal operating conditions Ambient temperature 0 40 Relative humidity 90 or less External magnetic field 400A m or less Position Hor...

Страница 8: ...inals It may take time when measuring a capacitive load Insulation resistance at least 100M DC1000V between the electrical circuit and the enclosure Withstand voltage AC5 550V 50 60Hz for 1 min betwee...

Страница 9: ...control switch 1 set MODEL7081 Guard cord Only for MODEL3321A 1 pce MODEL7101 Flat test bar 1 pce MODEL7131 Safety alligator clip 1 pce MODEL8017 Extension prod 1 pce Neck strap 1 pce Cord case 1 pce...

Страница 10: ...et Backlight switch Range switch Test lead with remote control switch MODEL7103 Remote control switch Line probe Earth cord Standard prod MODEL8072 Probe connector Flat test bar MODEL7101 Safety allig...

Страница 11: ...e pointer lines up with the mark tilting the instrument to the necessary angle 5 2 Test lead connection Insert the Probe connector into the Probe socket on the instrument correctly as shown below Prob...

Страница 12: ...when the Test button or Remote control switch is pressed the power on indication LED red lights up indicating the instrument is in the operation mode Batteries have exhausted Replace the batteries Pr...

Страница 13: ...ry side of a circuit breaker in order to avoid personal injury Do not press the Test button or Remote control switch during voltage measurement Never short live conductors with the tip of a probe to a...

Страница 14: ...the earth conductor in the circuit under test Such connection is known to be more suitable for insulation tests since an insulation resistance value measured with the positive side connected to earth...

Страница 15: ...to the circuit under test to discharge charges stored in the capacitance of the circuit DANGER Do not touch the circuit under test immediately after testing Charges stored in the capacitance of the c...

Страница 16: ...of a probe Attention should be paid to avoid possible shock hazard 6 4 Output voltage characteristics This instrument conforms to IEC61557 This standard defines that the nominal current shall be at le...

Страница 17: ...15 Output Voltage V Output Voltage V Output Voltage V range range range range range range range range range Insulation Resistance M Insulation Resistance M Insulation Resistance M...

Страница 18: ...order to remove this surface leakage current wind a guard wire around the cut end of the conductor and connect it to the guard terminal of the instrument using Guard Connection lead Then the surface l...

Страница 19: ...orrect polarity as marked inside the Battery compartment 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 Ba...

Страница 20: ...Case lid 2 Turn it 180 degrees 3 Put the Case lid under the Housing case 4 Hook it on to the Housing case 8 2 Neck strap and Cord case This instrument is equipped with a strap to suspend from the neck...

Страница 21: ...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 How to replace Test prod To remove the Te...

Страница 22: ...Connected to the Earth terminal of the Earth terminal board MODEL7101 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...

Страница 23: ...cover and affects the meter reading use a cloth damped with off the shelf anti static agent or detergent to wipe the meter cover surface CAUTION When the pointer deflects by touching the surface of th...

Страница 24: ...DISTRIBUTOR 08 07 92 1646A...

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