Kyoritsu 3126 User Manual Page 1

INSTRUCTION MANUAL4-range High voltage insulation resistance testerKEW 3126

̶ 8 ̶●Overload protection: Insulation resistance range: AC1200V/10sec. Voltage range: AC720V/10sec.●Withstand voltage: AC5320V(50/60Hz)/5sec. (B

̶ 9 ̶ 4. Instrument layout4-1 Instrument layout1 LCD display2 Range switch3 Test button4 Back Light button5 FILTER button6 DAR/ PI

̶ 10 ̶4-2 LCD display 1 Insulation resistance2 Bar graph3 Voltage4 Battery mark5 Voltage warning mark6 Time7 DAR mark8 PI mark9 DAR/

̶ 11 ̶ 5. Preparation for measurement5-1 Checking the battery voltage (1) Set the Range switch to any position other than “OFF”.(2) When the batte

̶ 12 ̶ 6. Measurement6-1 Mains disconnection check (Voltage measurement)# DANGER ● Do not make measurement on a circuit in which the elect

̶ 13 ̶6-2 Insulation resistance measurement# DANGER ● Confirm that no electrical charge exists on the circuit under test before measuring by using a

̶ 14 ̶ Connect the Earth cord to the Earth (ground) terminal. It is recommended to connect the positive(+) pole to the earth side when measu

̶ 15 ̶Auto-discharge functionThis is a function to discharge capacitance stored in the circuit under test automatically after testing. Discharge

̶ 16 ̶Principle of Insulation Resistance MeasurementResistance value can be obtained by applying a certain high voltage to the resistance (insulatio

̶ 17 ̶6-4 DAR/PI Measurement function1. PI – Polarization indexThis is to check a temporal increase of leakage currents flowing on insulations and to

Contents1. Safety warnings ·········································································· 12. Feature ································

̶ 18 ̶(3) Press the FILTER button and confirm the selection. Selected DAR time is saved and kept after the instrument is powered off. To

̶ 19 ̶4. How DAR/ PI values are displayedLCD shows DAR/PI values as shown below during measurements. (1) Start of test (2) 1 min after the start

̶ 20 ̶5. How to review the measured DAR/PI valuesPress the DISP button when measurements end. The measured results are then displayed in following s

̶ 21 ̶6-5 Voltage characteristics of measuring terminal* for 10sec after a start of test6-6 Use of Guard terminalWhen measuring the insulation resist

̶ 22 ̶6-7 Filter functionKEW3126 has Filter function. Filter Mode is effective to reduce the variations in readings due to external influence

̶ 23 ̶ 7．Battery replacement# DANGER● Never open the battery compartment cover while making measurement.# WARNING● To avoid getting possi

̶ 24 ̶ 8．Accessories8-1 Metal parts for Line Probe, and replacement# DANGERIn the electrical environment of CAT.II or higher, MODEL8252 should be att

̶ 25 ̶8-2 How to use the adaptor for recorder MODEL8302 is the adaptor for recorder (option) for output current measurement. Connect it as sho

10-04 92-2028DISTRIBUTORKyoritsu reserves the rights to change specifications or designs described in this manual without notice and without

̶ 1 ̶ 1. Safety warningsThis instrument has been designed, manufactured and tested according to IEC 61010: Safety requirements for Electronic m

̶ 2 ̶# DANGER● Never make measurement on the circuit in which electrical potential to ground over 600V exists.● Do not attempt to make mea

̶ 3 ̶# CAUTION● Always make sure to set the Range switch to the appropriate position before making a measurement.● Set the Range Switch

̶ 4 ̶○ Measurement categories(Over-voltage categories) To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards

̶ 5 ̶ 2. Feature KEW3126 is a microcomputer controlled, high voltage insulation resistance tester with 4-range for measuring insulation resistance.●

̶ 6 ̶ 3. Specification● Applicable standards IEC 61010-1 Measurement CAT.III 600V Pollution degree2 IEC 61010-031 Standard for hand-held probe

̶ 7 ̶This monitor is used to check whether electrical charge stored on the equipment under test is discharged or not. The measured voltage value di