TOS93 Series User’s Manual 5
Support for touch current, protective conductor
current, and patient leakage current tests
(TOS9303LC only)
Various leakage current tests for medical instruments are sup-
ported in addition to those for general electric appliances.
Partial discharge measurement function
(TOS9301PD only)
Partial discharge, which could not be detected in with-
standing voltage tests up to now, can be measured. This
provides a step forward in insulation analysis, and
device and material evaluation.
LAN, USB, and RS232C
The product is standard equipped with LXI compatible
LAN, USB 2.0, USB-TMC compatible USB, and
RS232C interface.
Color liquid crystal display
Intuitive display and controls are provided through the 7-
inch display that shows various test settings, descrip-
tions, and drawings.
• In this manual, the TOS9300, TOS9301, TOS9301PD,
TOS9302, TOS9303, and TOS9303LC electrical safety
analyzer are also referred to as the TOS93 series.
• The term “PC” is used to refer generally to both personal
com
puters and workstations.
• The term “EUT” is used to refer generally to an equip-
men
t under test.
• Test names may be abbreviated as follows:
AC withstanding voltage: ACW, DC withstanding volt-
age: DCW, insulation resistance: IR, earth continuity:
EC, partial discharge: PD, leakage current: LC, touch
current: TC, protective conductor current: PCC, patient
leakage current: Patient.
• The screen captures and illustrations used in this text
may differ from the actual items.
• The following markings are used in this manual.
Indicates an imminently hazardous situation which,
if ignored, will result in death or serious injury.
Indicates a potentially hazardous situation which, if
ignored, could result in death or serious injury.
Indicates a potentially hazardous situation which, if
ignored, may result in slight injury or damage to the
product or other property.
Indicates information that you should know.
>
Indicates the hierarchy of items you need to select. The
item to the left of this symbol indicates a higher level item.
, , , , ,
Indicate TOS93 series model names.
When using this product, be sure to observe the precau-
tions in the Safety Information manual. Items specific to
this product are given below.
• This product generates high voltage. Improper oper-
ation can lead to serious accidents.
To prevent accidents, be sure to read “Safety Precau-
tions for Testing” (p.19) in this manual. Keep this manual
close to the product so that the operators can read the
manual at any time.
• You will receive a potentially fatal electric shock if:
• You touch an output terminal while output is being
generated.
• You touch a test lead that is connected to an output
terminal while output is being generated.
• You touch the EUT while output is being generated.
• You touch a location that is electrically connected to
an output terminal while output is being generated.
• You touch a location that is electrically connected to
an output terminal immediately after output is turned
off after a DC withstanding voltage test or insulation
resistance test has been performed.
• You may receive a potentially fatal electric shock if:
• You operate the tester without grounding it.
• You operate the tester without using rubber gloves for
electrical work.
• You come close to a location that is electrically con-
nected to an output terminal while output is being
generated.
• You come close a location that is electrically con-
nected to an output terminal immediately after output
is turned off after a DC withstanding voltage test or
insulation resistance test has been performed.
• In tests that use test leads, do not touch the tip of
test leads.
Risk of electric shock.
Notations Used in This Manual
Safety Precautions
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