Iso-Tech IPM 138 Instruction Manual Download Page 9 | Manualshive

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EN-9

b. HZ/THD (=THD-R) Measurement

：

- THD-R= RMS of Harmonics ÷ Total RMS of fundamental
and Harmonics ×100% (Harmonics up to 25

th

.)

Overrange display:

OL.U

:

Voltage overload (Vrms > 1000V)

OL.A

:

Current overload (Arms > 620A)

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Summary of Contents for IPM 138

Page 1: ...Instruction Manual IPM 138 Clamp Multimeter EN DE ES IT FR...

Page 2: ...ng a known voltage before use If in doubt have the instrument serviced Do not apply more than the rated voltage as marked on the instrument between terminals or between any terminal and earth ground U...

Page 3: ...n Manual Maintenance Do not attempt to repair this Instrument It contains no user serviceable parts Repair or servicing should only be performed by qualified personnel This instrument should be calibr...

Page 4: ...turn the rotary switch to the off position and then back to the required function 10min To disable the Auto Power off function Turn the instrument off press and hold the PEAK button and turn the rotar...

Page 5: ...splay will show OL If the measured frequency exceeds 1000 Hz the display will show out F 1 VOLTAGE CURRENT Measurement 1 1 Voltage testing procedures 1 Plug the Black test lead into the COM terminal a...

Page 6: ...e jaw is firmly closed around the conductor 2 Set the rotary switch to the AB position 3 Read the value from digital display I I I I OK OK OK I I 0 If the measured current exceeds 620 A DC or AC RMS t...

Page 7: ...tton to choose Auto AC or DC AC DC or AC DC measurement n Auto AC DC mode AC or DC flashing The displayed value will be the AC only RMS value or the DC value whichever is greater o AC mode AC only wit...

Page 8: ...itive peak value is displayed p Peak Min The instrument is activated to save the positive peak value and negative peak value The negative peak value is displayed NOTE Press the HOLD button in PEAK HOL...

Page 9: ...N 9 b HZ THD THD R Measurement THD R RMS of Harmonics Total RMS of fundamental and Harmonics 100 Harmonics up to 25th Overrange display OL U Voltage overload Vrms 1000V OL A Current overload Arms 620A...

Page 10: ...MAX The instrument is activated to save the maximum and minimum value The maximum value is displayed q MIN The instrument is activated to save the maximum and minimum value The minimum value is displa...

Page 11: ...EN 11 b INRUSH CURRENT ACA ONLY...

Page 12: ...EN 12 1 3 4 DCA ZERO Remove the Jaws out of the conductor Press the HOLD BUTTON 2 sec to compensate the residual magnetism 0A Auto DC DC and AC DC MODE are available for current measurement...

Page 13: ...EN 13 2 Resistance Measurement Press the blue button to choose Resistance measurement Continuity check or Diode test mode Resistance measurement Continuity check...

Page 14: ...EN 14 Diode testing...

Page 15: ...firmly closed around the conductor 5 PRESS the BLUE button to choose between Active Power W or POWER FACTOR PF NOTE For correct indication the symbol on the jaw must face the power source side Active...

Page 16: ...U Voltage overload Vrms 1000V OL A Current overload Arms 620A OL UA Both Voltage and current overload OL kW Active Power 600 kW or 600 kW 3 2 Three Phase Power Measurement a 3 phase 3 wire balanced un...

Page 17: ...EN 17 b 3 phase 4 wire balanced unbalanced Set the rotary switch to the PF W position W W1 W2 W3 Black Black Black Red Red Red W3 W2 N 3 2 1 W1...

Page 18: ...test lead to the supposed phase 1 and the Black test lead to the supposed phase 3 a If the voltage 30V it display will show Lo V if voltage 1000V then it will show OL V b If the frequency is not 50 H...

Page 19: ...then the phase sequence is reversed sequence which means the supposed phase 2 is ahead of the supposed phase 1 c If the display shows means it is unable to judge d If the display shows Lo V it is poss...

Page 20: ...the button again to turn the backlight off otherwise the backlight will automatically turn off after approx 30 sec 6 1 2 BATTERY VOLTAGE CHECK Press the yellow LIGHT BUTTON 2 sec and the display will...

Page 21: ...Buzzer The Instrument beeps once for every valid button press and beeps twice for every invalid button press 8 Power up options Press the following buttons while turning the instrument on to enable t...

Page 22: ...indicator appears on the LCD replace the battery with the type given in the specifications WARNING Disconnect the test leads from the circuit and the instrument before removing the battery cover Refer...

Page 23: ...nstallation Category per IEC 61010 1 2001 CAT 600V Pollution Degree 2 Measurement Category l is for measurements performed on circuits not directly connected to mains Examples include Measurements on...

Page 24: ...1 of reading AC Conversion Type AC DC Coupled True RMS responding AC DC Arms accuracy same as ACA spec 1 5 rdg 5dgt DCA affected by the temperature and the residual magnetism Press HOLD button 2sec to...

Page 25: ...10 dgt Overload protection 1000Vrms 600Arms If ACV 10Vrms or ACA 10Arms it will display rdy If the fundamental frequency is out of range 45 65Hz the display will show out F Inrush Current Function Ran...

Page 26: ...dgt Overload protection 600Vrms Max Open Circuit voltage for Diode 3 0V Max Open Circuit voltage for 2 4V Continuity check The internal buzzer activates if the resistance of the circuit under test is...

Page 27: ...eration contamina tion or abnormal conditions of operation or handling Any implied warranties arising out of the sale of this product including but not limited to implied warranties of merchantability...

Page 28: ...o Tech PO Box 99 Corby Northamptonshire NN17 9RS United Kingdom Canada 1701 Woodward Drive Ste 108 Ottawa Ontario K2C 0R4 Canada Japan West Tower 12th Floor Yokohama Business Park 134 Godocho Hodogaya...

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