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20

          
Insulation Test

To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as

appears.
Turn the rotary switch to OFF and remove the test leads from the terminals.

Replacing Battery

1

2

Screw

Battery

Insulation tests should only be performed on dead circuits. Check the test leads before testing.
Switch rotary to Insulation position. if meter display

, please replease battery.

Insert test leads to High

Low

terminals

.

if

the

meter

display

Live,

indicator

the

meter

cannot

measure

on

live

circuit.

please

power

off

Live

circuit.

Press TEST.V button to select output voltage.
In insulation measuring,

the screen alternate turn      on or off, the primary screen display the resistance value, and the 

secondary screen display the Output voltage. Release the test button then discharges through the Meter, the meter display 
DISC.
The secondary Display 0 VDC indicator when the voltage discharge finished.
Disconnect the test leads from circuit.

Summary of Contents for Mastech MS5203

Page 1: ...Digital Insulation Tester MS5203 CA T IV 600 V CA T I I I 1000 V HOLD HOLD LOCK DIGITAL INSULATION TESTER MS5203...

Page 2: ...Off Hold Function Relative Measurement Insulation Test Lock Storing Test Data Reading Test Data Delete Data Compare Function Timer Function MAX MIN AVG DAR PI 03 04 05 12 03 04 05 06 08 09 10 10 11 11...

Page 3: ...h ground Use caution with voltages above 30 V ac rms 42 V ac peak or 60 V dc These voltages pose a shock hazard Replace the battery as soon as the low battery indicator appears Disconnect circuit powe...

Page 4: ...soon as the low battery indicator appears Indicates a test lock will be applied the next time you press Test Button on the meter the test lock acts to hold down the button until you press Test Button...

Page 5: ...nals Continuity test function is selected Auto power off function is selected TEST Timer unit min sec Measure unit Display the Max Min Avg value MAX MIN AVG GM V Indicator Description Appears on prima...

Page 6: ...DAR PI Active the timer function Active hold function in DCV ACV Continuity or lock function Insulation Active rel function in dcv acv continuity mode change cursour position Select one test output vo...

Page 7: ...Relative Measurement Show the difference between actual value and the relative base Press REL Button to enter relative measurement and the meter will record the initial value when pressing the key Dis...

Page 8: ...limited value press ENTER to adjust the value The meter will be flashing with the upper limited value or the lower limited value Switch to the proper range or signal polar by pressing SELECT Press to...

Page 9: ...fter applying the test voltage R15Sec Resistance value measured 10 minutes after applying the test voltage After performed insulation test press SELECT button to view DAR or PI If DAR or PI Value inva...

Page 10: ...ce To avoid possible damage to the Meter or to the equipment under test disconnect circuit power and discharge all high voltage capacitors before testing for continuity Switch rotary switch to positio...

Page 11: ...on if meter display please replease battery Insert test leads to High Low terminals if the meter display Live indicator the meter cannot measure on live circuit please power off Live circuit Press TES...

Page 12: ...sulation Source Voltage 20 0 Insulation Short Circuit Test Current 1 8mA nominal Insulation Auto Discharge Discharge time 2 second for C 1 F or less Insulation Live Circuit Detection Inhibit test if t...

Page 13: ...20 3 5 0 20M 20 100M 0 01M 0 1M 1mA 100K 250V 0 20 3 5 0 20M 20 200M 0 01M 0 1M 1mA 250K 200 250M 1M 500V 0 20 3 5 0 20M 20 200M 0 01M 0 1M 1mA 500K 200 500M 1M 1000V 0 20 3 5 0 200M 1 00 5 00G 0 1M 0...

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