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“KUSAM-MECO”

AN ISO 9001:2015 COMPANY

“KUSAM-MECO”

AN ISO 9001:2015 COMPANY

*As Hazardous-Alert: When making resistance measurements in 

TM

AutoCheck  mode, an unexpected display of voltage readings 

alerts you that the object under test is being energized.

*Ghost-voltage  Buster:  Ghost-voltages  are  unwanted  stray 

signals  coupled  from  adjacent  hard  signals,  which  confuse 

TM

common  multimeter  voltage  measurements.  Our  AutoCheck  

mode provides low (ramp-up) input impedance (approx. 3k  at 

W

low voltage) to drain ghost voltages leaving mainly hard signal 

values on meter readings. It is an invaluable feature for precise 

indication of hard signals, such as distinguishing between hot and 

open wires (to ground) in electrical installation applications.

TM

AutoCheck   mode  input  impedance  increases  abruptly  from 

initial 3k  to a few hundred k 's on high voltage hard signals. 

W

W

"LoZ" displays on the LCD to remind the users of being in such low 

impedance  mode.  Peak  initial  load  current,  while  probing 

1000VAC for example, can be up to 471mA (1000V x 1.414 / 3k ), 

W

decreasing abruptly to approx. 3.1mA (1000V x 1.414 / 460k ) 

W

TM

within a fraction of a second. Do not use AutoCheck  mode on 

circuits  that  could  be  damaged  by  such  low  input  impedance. 

Instead, use rotary selector V or  V  high input impedance voltage 

modes to minimize loading for such circuits. 

WARNING:

19

20

 

+ACV

+ACV

DC + ACV 

, DCV, DCV 

 functions

Press  the 

SELECT

  button  momentarily  to  select  the  subject 

functions in sequence.   Last selection will be saved as power up 
default for repeat measurement convenience.

Summary of Contents for KM 525

Page 1: ...RATION MANUAL TRMS MOBILE LOGGER DIGITAL MULTIMETER AN ISO 9001 2015 COMPANY Digital Panel Meters Battery Testers DC Power Supply Phasing Sticks High Voltage Detector Calibrators Frequency Counter Fun...

Page 2: ...ns Set your meter to the correct function say current and its highest range for the setting say 20A Nearly every electrical engineer has a hand held Multimeter We sometimes take them for granted until...

Page 3: ...meters and measurements on primary overcurrent protection devices and ripple control units Measurement Category III CAT III is for measurements performed in the building installation Examples are mea...

Page 4: ...CENELEC Low voltage directive 2006 95 EC and Electromagnetic compatibility directive 2004 108 EC INTERNATIONAL ELECTRICAL SYMBOLS DC Direct Current AC Alternating Current Double Insulation or Reinfor...

Page 5: ...000 VAC DC IR 20kA F fuse V 1050Vrms 1450Vpeak mV others 1050Vrms 1450Vpeak W 5 E M C Meets EN61326 1 2006 EN55022 EN61000 3 2 EN61000 3 3 EN61000 4 2 EN61000 4 3 EN61000 4 4 EN61000 4 5 EN61000 4 6 E...

Page 6: ...999 9V 0 8 4d 1 0 4d 2 0 4d 500Hz 1kHz mV V 60 00mV 600 0mV 9 999V 99 99V 999 9V 2 0 3d 1 0 4d 2 0 4d 1kHz 3kHz mV V 60 00mV 600 0mV 9 999V 99 99V 999 9V 2 3d 3 0 4d 3kHz 20kHz mV V 1 1 60 00mV 600 0...

Page 7: ...is above 50V typical Ended up impedances vs display voltages typically are 125k 300V W 320k 600V W 500k 1000V W 9 OHMS CONDUCTANCE RANGE ACCURACY 600 0W 6 000kW 60 00kW 600 0kW 60 00MW 0 1 3d 6 000MW...

Page 8: ...cool down interval 10A continuous 10A to 20A for 30 second max with 5 minutes cool down interval DC CURRENT RANGE ACCURACY 600 0mA 6000mA 60 00mA 600 0mA 6 000A 10 00A 0 2 4d 11 LINE LEVEL FREQUENCY H...

Page 9: ...nd to the field strength Connections use the Red test probe for direct contact measurements Indication Bar graph segments audible beep tones proportional Probe Contact EF Detection For more precise in...

Page 10: ...generators and motors to burn out faster than normal 2 Circuit breakers to trip prematurely 4 Neutrals to overheat due to the triplen harmonics present on the neutral 15 Crest Factor Crest Factor is...

Page 11: ...ess the button momentarily repeatedly to step through the ranges or functions TM AUTOCHECK MODE This innovative feature automatically selects TM AutoCheck measurement function of DCV ACV or Resistance...

Page 12: ...and open wires to ground in electrical installation applications TM AutoCheck mode input impedance increases abruptly from initial 3k to a few hundred k s on high voltage hard signals W W LoZ displays...

Page 13: ...nction in a live circuit will produce false results may damage the instrument In many cases the suspected component must be disconnected from the circuit to obtain an accurate reading nS Conductance W...

Page 14: ...ual channel function is available in KM 525 only 24 Normal forward voltage drop forward biased for a good silicon diode is between 0 400V to 0 900V A reading higher than that indicates a leaky diode d...

Page 15: ...rking voltage for the protection fuse s ELECTRIC FIELD EF DETECTION At any function press the EF button for one second or more to toggle to EF Detection feature The meter displays E F When it is ready...

Page 16: ...tomatically after 32 seconds to extend battery life TM Beep Jack Input Warning The meter beeps as well as displays InEr to warn the user against possible damage to the meter due to improper connection...

Page 17: ...hen back on to resume Note Manual ranging feature is not available in Hz function 1 Rotary switch or push button operations and 2 Significant measuring readings of above 512 counts or non OL W reading...

Page 18: ...directly without erasing the formerly logged one s Or you can press the Erase button momentaily to erase ALL of the formerly loged session page s and start a new logging session from the very first se...

Page 19: ...5 6 Press SELECT button momentarily to toggle the LCD display between logged data and its item number Press the Up arrow and Down arrow buttons simultaneously to enter the Recall mode The last sessio...

Page 20: ...itions of operation the series fusible resistors will be blown off become high impedance like fuses to protect the user and the instrument Most measuring functions through this terminal will then be o...

Page 21: ...for damaged Ic s fuses disposable batteries carrying case test leads or to any product which in KUSAM MECO s opinion has been misused altered neglected contaminated or damaged by accident or abnormal...

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