User’s Manual
Electrical Safety Analyzer
TOS93 Series
TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LC
DANGER
This product generates high voltage!
Improper operation can lead to serious accidents.
To prevent accidents, be sure to read the section
“Safety Precautions for Testing” in this manual.
Keep this manual close to the product so that the operators
can read the manual at any time.
Contents 7
Component Names 12
Safety Precautions for Testing 19
Installation 25
Basic Operation 46
Withstanding Voltage and Insulation
Resistance Tests
53
Earth Continuity Test 90
Partial Discharge Test 108
Touch Current Test 134
Protective Conductor Current Test 159
Patient Leakage Current Test 178
Meter Mode 201
Auto Test 215
External Control 234
Memory Function 249
System Settings 258
Maintenance 279
Specifications 285
Appendix 315
Part No. IB035471
Apr 2021