AC/DC Hipot Tester with Insulation Resistance, Ground Bond, and Leakage Current Test

TOS9303LC

TOS9303LC

1,050,000 (税込:1,155,000

  • The TOS9300 series is a high performance electrical safety analyzer that complies to a wide range of universal standards. Hipot, Insulation Resistance, Ground Bond, Leakage Current (touch current and protective conductor current) and partial discharge can all be tested. A total of 6 models are available for standard compliance tests in a wide variety of applications including R&D, quality assurance manufacturing lines and laboratory tests.

This product generates high voltage! The use of this product requires knowledge of electricity.Improper handling or operation of this product can be very dangerous, so be sure to read the instruction manual carefully and use this product properly.


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Specifications

Withstanding Voltage Test

AC Output function

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AC output sectionTOS9300TOS9301TOS9301PDTOS9302TOS9303TOS9303LC
AC output sectionOutput range 0.050 kV to 5.000 kV
Resolution1 V
Setting accuracy±(1.2 % of setting + 0.02 kV) (at no load)
Max. rated load *1500 VA(5 kV / 100 mA)
Max. rated current100 mA (when the output voltage is 0.2 kV or higher)
Transformer rating500 VA
Output voltage waveform *2 Sine
Distortion2 % or less. (when the output voltage is 0.5 kV or higher and no load or a pure resistive load is connected)
Crest factor√2 ± 3 % (0.8 kV or higher)
Frequency 50 Hz / 60 Hz
Accuracy±0.1 %
Voltage regulation±3 % or less (when changing from maximum rated load to no load)
Short-circuit current200 mA or more (output voltage 0.5 kV or higher)
Output methodPWM switching
Start voltage The voltage at the start of the test can be set.
Setting range1 % to 99 % of the test voltage
Resolution1%
Output voltage monitor functionIf the output voltage exceeds ±(10 % of setting + 0.05 kV), the output is turned off, and the protection function is activated.

DC Output function

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AC output sectionTOS9301TOS9301PDTOS9303TOS9303LC
DC output sectionOutput range 0.050 kV to 7.200 kV
Resolution1 V
Setting accuracy±(1.2 % of setting + 0.02 kV)
Max. rated load *1100 W (5 kV/20 mA, 7.2 kV/13.9 mA)
Max. rated current20 mA
Ripple7.2 kV no load20 Vp-p (TYP)
Max. rated load50 Vp-p (TYP)
Voltage regulation1 % or less (when changing from maximum rated load to no load)
Short-circuit current100 mA (TYP) (200 mA peak)
Discharge functionForced discharge after test completion (discharge resistance: 125 kΩ)
Start voltage The voltage at the start of the test can be set.
Setting range1 % to 99 % of the test voltage
Resolution1%
Output voltage monitor functionIf the output voltage exceeds ±(10 % of setting + 0.05 kV), the output is turned off, and the protection function is activated.

*1 When tests are performed consecutively, output time limit and rest time may become necessary depending on the upper limit setting *2 If an AC voltage is applied to a capacitive load, the output voltage may rise higher than at no load depending on the load capacitance. Further, waveform distortions may occur if an EUT whose capacitance is dependent on voltage (for example, an EUT that consists of ceramic capacitors) is connected as the load. However, if the test voltage is 1.5 kV, the effect of a capacitance of 1 000 pF or less can be ignored. Because the product’s high-voltage power supply uses the PWM switching method, if the test voltage is 500 V or less, the switching and spike noise proportions are large. The lower the test voltage, the greater the waveform is distorted.


Measurement function

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AC output sectionTOS9300TOS9301TOS9301PDTOS9302TOS9303TOS9303LC
VoltmeterMeasurement range0 kV to 7.5 kV AC/DC
Resolution0.1 V
Accuracy±(1.2 % of reading + 0.005 kV)
ResponseCan be switched between true rms and mean-value response rms conversion.
Peak-value response in a separate system (the peak-value response is for measuring the dielectric breakdown voltage while rising)
Hold functionThe voltage measurement after a test is finished is held while the pass/fail judgment is displayed.
Ammeter *1 *2Measurement rangeAC: 0.00 mA to 110 mA, DC: 0.00 mA to 22 mA (Current including the active component and reactive component)
Accuracy±(1 % of reading + 2 μA) (active component)
ResponseCan be switched between true rms and mean-value response rms conversion.
Hold functionThe current measurement after a test is finished is held while the pass judgment is displayed.
Offset cancel functionCancels up to 10 mA of the current flowing through the insulation resistance and stray capacitance components across output cables and the like (resistance component only for DC tests). OFF function available.
CalibrationActive component: Calibrated with the rms of a sine wave using a pure resistive load. Reactive component: Not calibrated.

*1 During AC voltage tests, current also flows in the stray capacitance of items such as the test leads and tools. For details on stray capacitance, see “Stray Capacitance of AC Withstanding Voltage Tests” *2 When the temperature and humidity are high, erroneous current from the product’s internal and external high-voltage wiring sections to ground increases. When the humidity exceeds 70 %, an erroneous current of about 50 μA may be generated.


Judgment feature

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ItemTOS9300TOS9301TOS9301PDTOS9302TOS9303TOS9303LC
Current judgment operationThe output is shut off when a judgment is made. Buzzer volume level can be set in the range of 0 (OFF) to 10 for pass and fail separately. In an auto test, the buzzer is valid only for the judgment that takes place at the end of the program.
UPPER FAILJudgment methodUPPER FAIL results when a current greater than or equal to the Upper limit is detected. For DCW, judgment is not made during the judgment delay (Judge Delay).
Display“U-FAIL” is displayed.
BuzzerOn
SIGNAL I/OThe Upper-FAIL signal is generated continuously until a STOP signal is received.
Lower FAILJudgment methodLOWER FAIL results when a current less than or equal to the Lower limit is detected. Judgment is not made during Voltage rise time or Voltage fall time of an ACW test.
Display“L-FAIL” is displayed.
BuzzerOn
SIGNAL I/OThe Lower-FAIL signal is generated continuously until a STOP signal is received.
PASSJudgment methodPASS judgment is made if U-FAIL or L-FAIL has not occurred when the test time elapses.
Display“PASS” is displayed.
BuzzerOn (fixed to 50 ms)
SIGNAL I/OThe PASS signal is generated for the length of time specified by the Pass Hold set-ting. If Pass Hold is set to Infinity, the PASS signal is generated continuously until a STOP signal is received.
Voltage rise rate judgment operationMonitors the voltage rise rate during Voltage rise time. This is valid when Auto setting of the judgment delay (Delay Auto) is set to on and the output voltage is 200 V or more. The output is shut off when a judgment is made. Buzzer volume level can be set in the range of 0 (OFF) to 10 for pass and fail separately.
dV/dt FAILJudgment methodWhen the voltage rise rate (dV/dt) is less than approx. 1 V/s.
Display“ Upper-FAIL(dv/dt)” is displayed.
BuzzerOn
SIGNAL I/OThe U-FAIL signal is generated continuously until a STOP signal is received.
Upper limit setting rangeAC: 0.01 mA to 110.00 mA, DC: 0.01 mA to 21.00 mA
Lower limit setting rangeAC: 0.00 mA to 109.99 mA, DC: 0.00 mA to 20.99 mA, OFF. Setting 0.00 is equivalent to OFF.
Judgment accuracy *1 *2±(1 % of setting + 5 μA)
Current detection methodCompares to the reference value using the following method. Calculate true rms values, convert mean-value responses to rms values
Response speed (filter) switchingSwitches the current detection response speed (sensitivity) used in UPPER FAIL judgment between five levels in ACW and DCW tests.

*1 During AC voltage tests, current also flows in the stray capacitance of items such as the test leads and tools. For details on stray capacitance, see “Stray Capacitance of AC Withstanding Voltage Tests” *2 When the temperature and humidity are high, erroneous current from the product’s internal and external high-voltage wiring sections to ground increases. When the humidity exceeds 70 %, an erroneous current of about 50 μA may be generated.


Timer function

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AC output sectionTOS9300TOS9301TOS9301PDTOS9302TOS9303TOS9303LC
Current rise time settings range0.1 s to 200.0 s
Current fall time setting time *10.1 s to 200.0 s, OFF
Test time setting range0.1 s to 1000.0 s, OFF
Judgment delay (Judge Delay) setting range *20.1 s to 100.0 s, AUTO *3 (DCW only)
Accuracy±(100 ppm of setting + 20 ms) (excluding the fall time)

*1 This setting is used only when a PASS judgment occurs in ACW and DCW tests. During a DCW test, the voltage may not drop all the way within the set time because of the electrostatic capacity inside the product and the EUT. *2 Less than the sum of the rise time and fall time. *3 If Delay Auto is set to on, LOWER judgment is not made until the charge time ends.


Other specifications

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AC output sectionTOS9300TOS9301TOS9301PDTOS9302TOS9303TOS9303LC
Analog monitor *1 Outputs a voltage signal according to the current waveform or voltage waveform
ICurrent waveform: Scale 50 mA/1 V
VVoltage waveform: Scale 1 kV/1 V
Grounding mode (GND) Can be switched between Low and Guard.
LowGND is connected to the low terminal. Measures the current flowing across the low terminal and chassis (normal applications).
Guard *2GND is connected to Guard. Measures only the current flowing through the low terminal (cur-rent flowing through the chassis is not measured) (high sensitivity, high accuracy measure-ment applications).

*1 Monitor signal output is isolated from the chassis (earth). If you connect an oscilloscope or an external device whose BNC shield is grounded, be sure to set the grounding mode (GND) to Guard. The value is not calibrated. *2 If there is a possibility that the EUT or tools and the like will be grounded or if you are uncertain, do not set GND to Guard. Doing so is extremely dangerous because the ammeter will be shorted and will not be able to measure current. For normal applications, set GND to Low.


Insulation Resistance Test

Output function

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ItemTOS9300TOS9301TOS9301PDTOS9303TOS9303LC
Negative polarityOutput voltage range -0.025 kV to -1 kV
Resolution1 V
Setting accuracy±(1.2 % of setting + 0.002 kV)
Max. rated load1 W (-1 kV/1 mA)
Ripple1 kV no load2 Vp-p or less
Max. rated load10 Vp-p or less
Short-circuit current12 mA or less
Positive polarity *1Output voltage range +0.05 kV to +7.2 kV
Resolution1 V
Setting accuracy±(1.2 % of setting + 0.02 kV)
Max. rated load7.2 W(7.2 kV/1 mA)
Ripple1 kV no load20 Vp-p or less
Max. rated load50 Vp-p or less
Short-circuit current100 mA (TYP) (200 mA peak)
Max. rated current1 mA
Voltage regulation1 % or less (when changing from maximum rated load to no load)
Discharge functionForced discharge after test completion (discharge resistance: 20 kΩ)
Output voltage monitor functionIf the output voltage exceeds ±(10 % of setting + 0.05 kV), the output is turned off, and the protection function is activated.

*1 TOS9300 are not supported.


Measurement function

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ItemTOS9300TOS9301TOS9301PDTOS9303TOS9303LC
VoltmeterMeasurement rangeNegative polarity: 0 Vdc to -1200 Vdc, positive polarity: 0 Vdc to 7500 Vdc
Resolution0.1 V
AccuracyNegative polarity: ±(1 % of reading + 1 V), positive polarity: ±(1.2 % of reading + 1 V)
Resistance meterMeasurement range0.001 MΩ to 100.0 GΩ (in the range of maximum rated current of 1 mA to 5 nA)
Accuracy *1 *2 (when GND is set to Guard) (i: measured current)(R: measurement resistance)5 nA ≤ i ≤ 50 nA *3500.000 MΩ ≤ R < 1.000 GΩ: ±(15 % of reading + 0.5 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ: ±(15 % of reading + 5 MΩ)
10.000 GΩ ≤ R ≤ 100.000 GΩ: ±(20 % of reading + 200 MΩ)
50 nA < i ≤ 100 nA *3200.000 MΩ ≤ R < 1.000 GΩ: ±(10 % of reading + 0.5 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ: ±(10 % of reading + 5 MΩ)
10.000 GΩ ≤ R < 50.000 GΩ: ±(10 % of reading + 50 MΩ)
50.000 GΩ ≤ R ≤ 100.000 GΩ: ±(20 % of reading + 200 MΩ)
100 nA < i ≤ 200 nA *4100.000 MΩ ≤ R < 1.000 GΩ: ±(7 % of reading + 0.5 MΩ)
1.000 GΩ ≤ R < 2.000 GΩ: ±(7 % of reading + 5 MΩ)
2.000 GΩ ≤ R < 10.000 GΩ: ±(7 % of reading + 10 MΩ)
10.000 GΩ ≤ R < 50.000 GΩ: ±(7 % of reading + 100 MΩ)
200 nA < i ≤ 1 μA *410.000 MΩ≤ R < 100.000 MΩ: ±(5 % of reading + 0.05 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ: ±(5 % of reading + 0.5 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ: ±(5 % of reading + 5 MΩ)
10.000 GΩ ≤ R < 25.000 GΩ: ±(5 % of reading + 50 MΩ)
1 μA < i ≤ 1 mA *40.001 MΩ ≤ R < 10.000 MΩ: ±(2 % of reading + 0.003 MΩ)
10.000 MΩ ≤ R < 100.000 MΩ: ±(2 % of reading + 0.03 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ: ±(2 % of reading + 0.3 MΩ)
1.000 GΩ ≤ R < 5.000 GΩ: ±(2 % of reading + 3 MΩ)
Accuracy *5 (when GND is set to Low)(i: measured current)(R: measurement resistance)5 nA ≤ i ≤ 50 nA *3500.000 MΩ≤ R < 1.000 GΩ: ±(25 % of reading + 0.5 MΩ)
1.000 GΩ≤ R < 10.000 GΩ: ±(25 % of reading + 5 MΩ)
10.000 GΩ≤ R ≤ 100.000 GΩ: ±(30 % of reading + 200 MΩ)
50 nA < i ≤ 100 nA *3200.000 MΩ≤ R < 1.000 GΩ: ±(20 % of reading + 0.5 MΩ)
1.000 GΩ≤ R < 10.000 GΩ: ±(20 % of reading + 5 MΩ)
10.000 GΩ≤ R < 50.000 GΩ: ±(20 % of reading + 50 MΩ)
50.000 GΩ≤ R ≤ 100.000 GΩ: ±(30 % of reading + 200 MΩ)
100 nA < i ≤ 200 nA *4100.000 MΩ≤ R < 1.000 GΩ: ±(10 % of reading + 0.5 MΩ)
1.000 GΩ≤ R < 2.000 GΩ: ±(10 % of reading + 5 MΩ)
2.000 GΩ≤ R < 10.000 GΩ: ±(10 % of reading + 10 MΩ)
10.000 GΩ≤ R < 50.000 GΩ: ±(10 % of reading + 100 MΩ)
200 nA < i ≤ 1 μA *410.000 MΩ≤ R < 100.000 MΩ: ±(5 % of reading + 0.05 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ: ±(5 % of reading + 0.5 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ: ±(5 % of reading + 5 MΩ)
10.000 GΩ ≤ R < 25.000 GΩ: ±(5 % of reading + 50 MΩ)
1 μA < i ≤ 1 mA *40.001 MΩ ≤ R < 10.000 MΩ: ±(2 % of reading + 0.003 MΩ)
10.000 MΩ ≤ R < 100.000 MΩ: ±(2 % of reading + 0.03 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ: ±(2 % of reading + 0.3 MΩ)
1.000 GΩ ≤ R < 5.000 GΩ: ±(2 % of reading + 3 MΩ)
Hold functionThe resistance measurement after a test is finished is held while the pass judgment is displayed.
Offset cancel functionCancels up to 2000 GΩ of the unnecessary insulation resistance across output cables and the like. OFF function available.

*1 Humidity: 70 %rh or less (no condensation), when there is no interference caused by wobbly test leads or other problems. *2 If the grounding mode (GND) is set to low in a highly humid environment, leakage current to ground will be generated from the high-voltage wiring sections inside the product and the high-voltage wiring sections between the product and the EUT. This leakage current ranges from several nA to several tens of nA depending on the usage and wiring conditions of the optional TOS9320 high voltage scanner and greatly affects measurement accuracy. The effects of leakage current can be reduced by making measurements with the offset enabled. *3 Add 10 % to the accuracy when measuring 100 V or less. *4 Add 5 % to the accuracy when measuring 100 V or less. *5 When the measured current is limited to 100 nA or more (no condensation) when the humidity is 50 %rh or less, no external disturbance is present such as swinging test leads, and the offset is enabled.

 


Judgment feature

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ItemTOS9300TOS9301TOS9301PDTOS9303TOS9303LC
Behavior based on judgmentThe output is shut off when a judgment is made. Buzzer volume level can be set in the range of 0 (OFF) to 10 for pass and fail separately. In an auto test, the buzzer is valid only for the judgment that takes place at the end of the program.
UPPER FAILJudgment methodUPPER FAIL results when a resistance greater than or equal to the Upper limit is detected. Judgment is not made during or Voltage rise time.
Display“Upper-FAIL” is displayed.
BuzzerOn
SIGNAL I/OThe Upper-FAIL signal is generated continuously until a STOP signal is received.
Lower FAILJudgment methodLOWER FAIL results when a resistance less than or equal to the Lower limit is detected. Judgment is not made during the judgment delay (Judge Delay).
Display“L-FAIL” is displayed.
BuzzerOn
SIGNAL I/OThe Lower-FAIL signal is generated continuously until a STOP signal is received.
PASSJudgment methodPASS judgment is made if U-FAIL or L-FAIL has not occurred when the test time elapses.
Display“PASS” is displayed.
BuzzerOn (fixed to 50 ms)
SIGNAL I/OThe PASS signal is generated for the length of time specified by the Pass Hold setting. If Pass Hold is set to Infinity, the PASS signal is generated continuously until a STOP signal is received.
Voltage rise rate judgment operationMonitors the voltage rise rate during Voltage rise time. This is valid when Auto setting of the judgment delay (Delay Auto) is set to on and the output voltage is 200 V or more. The output is shut off when a judgment is made. Buzzer volume level can be set in the range of 0 (OFF) to 10 for pass and fail separately.
dV/dt FAILJudgment methodWhen the voltage rise rate (dV/dt) is less than 1 V/s.
Display“ Lower-FAIL(dv/dt)” is displayed.
BuzzerOn
SIGNAL I/OThe L FAIL signals are generated continuously until a STOP signal is received.
Upper limit setting range0.001 MΩ to 100.000 GΩ (in the range up to the maximum rated current), OFF
Lower limit setting range0.000 MΩ to 99.999 GΩ (in the range up to the maximum rated current), OFF. Setting 0.000 is equivalent to OFF.
Accuracy *1 *2 *3 (when GND is set to Guard) (i: measured current) (R: measurement resistance)5 nA ≤ i ≤ 50 nA *4500.000 MΩ ≤ R < 1.000 GΩ : ±(15 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ : ±(15 % of setting + 15 MΩ)
10.000 GΩ ≤ R ≤ 100.000 GΩ : ±(20 % of setting + 210 MΩ)
50 nA < i ≤ 100 nA *4200.000 MΩ ≤ R < 1.000 GΩ : ±(10 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ : ±(10 % of setting + 15 MΩ)
10.000 GΩ ≤ R < 50.000 GΩ : ±(10 % of setting + 60 MΩ)
50.000 GΩ ≤ R ≤ 100.000 GΩ : ±(20 % of setting + 210 MΩ)
100 nA < i ≤ 200 nA *5100.000 MΩ ≤ R < 1.000 GΩ : ±(7 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 2.000 GΩ : ±(7 % of setting + 15 MΩ)
2.000 GΩ ≤ R < 10.000 GΩ : ±(7 % of setting + 20 MΩ)
10.000 GΩ ≤ R < 50.000 GΩ : ±(7 % of setting + 110 MΩ)
200 nA < i ≤ 1 μA *510.000 MΩ ≤ R < 100.000 MΩ : ±(5 % of setting + 0.06 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ : ±(5 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ : ±(5 % of setting + 15 MΩ)
10.000 GΩ ≤ R < 25.000 GΩ : ±(5 % of setting + 60 MΩ)
1 μA < i ≤ 1 mA *50.001 MΩ ≤ R < 10.000 MΩ : ±(2 % of setting + 0.013 MΩ)
10.000 MΩ ≤ R < 100.000 MΩ : ±(2 % of setting + 0.04 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ : ±(2 % of setting + 0.31 MΩ)
1.000 GΩ ≤ R < 5.000 GΩ : ±(2 % of setting + 13 MΩ)
Accuracy *6 (when GND is set to Low) (i: measured current) (R: measurement resistance)5 nA ≤ i ≤ 50 nA *4500.000 MΩ ≤ R < 1.000 GΩ : ±(25 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ : ±(25 % of setting + 15 MΩ)
10.000 GΩ ≤ R ≤ 100.000 GΩ : ±(30 % of setting + 210 MΩ)
50 nA < i ≤ 100 nA *4200.000 MΩ ≤ R < 1.000 GΩ : ±(20 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ : ±(20 % of setting + 15 MΩ)
10.000 GΩ ≤ R < 50.000 GΩ : ±(20 % of setting + 60 MΩ)
50.000 GΩ ≤ R ≤ 100.000 GΩ : ±(30 % of setting + 210 MΩ)
100 nA < i ≤ 200 nA *5100.000 MΩ ≤ R < 1.000 GΩ : ±(10 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 2.000 GΩ : ±(10 % of setting + 15 MΩ)
2.000 GΩ ≤ R < 10.000 GΩ : ±(10 % of setting + 20 MΩ
10.000 GΩ ≤ R < 50.000 GΩ : ±(10 % of setting + 110 MΩ)
200 nA < i ≤ 1 μA *510.000 MΩ ≤ R < 100.000 MΩ : ±(5 % of setting + 0.06 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ : ±(5 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ : ±(5 % of setting + 15 MΩ)
10.000 GΩ ≤ R < 25.000 GΩ : ±(5 % of setting + 60 MΩ)
1 μA < i ≤ 1 mA *50.001 MΩ ≤ R < 10.000 MΩ : ±(2 % of setting + 0.013 MΩ)
10.000 MΩ ≤ R < 100.000 MΩ : ±(2 % of setting + 0.04 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ : ±(2 % of setting + 0.31 MΩ)
1.000 GΩ ≤ R < 5.000 GΩ : ±(2 % of setting + 13 MΩ)

*1 Making judgments on 200 μA or less requires at least 3 seconds after the rise time ends. Making judgments when the low pass filter is set to on requires at least 10 seconds after the rise time ends. *2 Humidity: 70 %rh or less (no condensation), when there is no interference caused by wobbly test leads or other problems. *3 If the grounding mode (GND) is set to low in a highly humid environment, leakage current to ground will be generated from the high-voltage wiring sections inside the product and the high-voltage wiring sections between the product and the EUT. This leakage current ranges from several nA to several tens of nA depending on the usage and wiring conditions of the optional TOS9320 high voltage scanner and greatly affects measurement accuracy. The effects of leakage current can be reduced by making measurements with the offset enabled. *4 Add 10 % to the accuracy when measuring 100 V or less. *5 Add 5 % to the accuracy when measuring 100 V or less. *6 When the measured current is limited to 100 nA or more (no condensation) when the humidity is 50 %rh or less, no external disturbance is present such as swinging test leads, and the offset is enabled.


Timer function

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ItemTOS9300TOS9301TOS9301PDTOS9303TOS9303LC
Current rise time settings range0.1 s to 200.0 s
Test time setting range0.1 s to 1000.0 s, OFF
Judgment delay (Judge Delay) setting range *10.1 s to 100.0 s, AUTO *2
Accuracy *3±(100 ppm of setting + 20 ms)

*1 Less than the sum of the rise time and fall time. *2 If Delay Auto is set to on, UPPER judgment is not made until the charge time ends. *3 This excludes fall time.


Other specifications

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ItemTOS9300TOS9301TOS9301PDTOS9303TOS9303LC
Grounding mode (GND)Can be switched between Low and Guard.
LowGND is connected to the low terminal. Measures the current flowing across the low terminal and chassis (normal applications).
Guard *1GND is connected to Guard. Measures only the current flowing through the low terminal (current flowing through the chassis is not measured) (high sensitivity, high accuracy measurement applications).
Filter functionA low-pass filter can be inserted into the ammeter measurement circuit. *2

*1 If there is a possibility that the EUT or tools and the like will be grounded or if you are uncertain, do not set GND to Guard. Doing so is extremely dangerous because the ammeter will be shorted and will not be able to measure current. For normal applications, set GND to Low. *2 When the low pass filter is on, a judgment delay of at least 5 seconds and a test time are required.


Earth Continuity Test

Output function

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ItemTOS9302TOS9303TOS9303LC
Current setting range *13.0 A to 42.0 A AC/DC
Resolution0.1 A
Accuracy±(1 % of setting + 0.4 A)
ACMaximum rated output *2220 VA (at the output terminal)
Distortion2 % or less (20 A or more, using a 0.1 Ω pure resistive load)
FrequencySelect 50 Hz or 60 Hz. Sine
Accuracy±200 ppm
Open terminal voltage6 Vrms or less
Output methodPWM switching
DCMaximum rated output220 W (at the output terminal)
Ripple±0.4 Ap-p or less (TYP)
Open terminal voltage6.0 V or less

*1 No greater than the maximum rated output and resistance no greater than the output terminal voltage 5.4 V. *2 When tests are performed consecutively, output time limit and rest time may become necessary depending on the upper limit setting.


Measurement function

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ItemTOS9302TOS9303TOS9303LC
Output ammeterMeasurement range0.0 A to 45.0 A AC/DC
Resolution0.01 A
Accuracy±(1 % of reading + 0.2 A)
ResponseAC: true rms value: DC: mean value
Hold functionThe current measurement after a test is finished is held while the pass or fail judgment is displayed.
Output voltmeterMeasurement rangeAC: 0.00 V to 6.00 V, DC: 0.00 V to 8.50 V
Resolution0.001 V
Offset cancel functionCancels up to 5 V (AC/DC) of the unnecessary voltage from measurements. OFF function available.
Accuracy±(1 % of setting + 0.02 V)
ResponseAC: true rms value: DC: mean value
Hold functionThe voltage measurement after a test is finished is held while the pass or fail judgment is displayed.
Resistance meterMeasurement range *11 mΩ to 600 mΩ
Resolution1 mΩ
Offset cancel functionCancels up to 10 Ω of the unnecessary resistance from measurements. OFF function available.
Accuracy±(2 % of reading + 3 mΩ)
Hold functionThe resistance measurement after a test is finished is held while the pass judgment is displayed.

*1 Calculated from the measured output voltage and measured output current.


Judgment feature

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ItemTOS9302TOS9303TOS9303LC
Behavior based on judgmentJudgment based on resistance or sensing voltage can be selected. The output is shut off when a judgment is made. Buzzer volume level can be set in the range of 0 (OFF) to 10 for pass and fail separately. In an auto test, the buzzer is valid only for the judgment that takes place at the end of the program.
UPPER FAILJudgment methodUPPER FAIL results when a resistance greater than or equal to the Upper limit is detected or when a sensing voltage is detected. Judgment is not made during a contact check.
Display“U-FAIL” is displayed.
BuzzerOn
SIGNAL I/OThe U-FAIL signal is generated continuously until a STOP signal is received.
LOWER FAILJudgment methodLOWER FAIL results when a resistance less than or equal to the lower limit (Lower) is detected or when a sensing voltage is detected.
Display“L-FAIL” is displayed.
BuzzerOn
SIGNAL I/OThe L-FAIL signal is generated continuously until a STOP signal is received.
PASSJudgment methodPASS judgment is made if U-FAIL or L-FAIL has not occurred when the test time elapses.
Display“PASS” is displayed.
BuzzerOn (fixed to 50 ms)
SIGNAL I/OThe PASS signal is generated for the length of time specified by the Pass Hold setting. If Pass Hold is set to Infinity, the PASS signal is generated continuously until a STOP signal is received.
Resistance judgmentUpper limit setting range0.0001 Ω to 10.0000 Ω
Lower limit setting range0.0000 Ω to 9.9999 Ω
Judgment accuracy±(2 % of setting + 3 mΩ)
Voltage judgmentUpper limit setting range0.001 V to 5.000 V AC/DC
Lower limit setting range0.000 V to 4.999 V AC/DC
Judgment accuracy±(2 % of setting + 0.05 V)
CalibrationCalibrated using a pure resistive load (with the rms of a sine wave for AC)
Contact check functionChecks that current flows through the test leads and then starts the test. (OFF setting available)

Timer function

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ItemTOS9302TOS9303TOS9303LC
Current rise time settings range0.1 s to 200.0 s
Current fall time setting time *10.1 s to 200.0 s, OFF
Test time0.1 s to 1000.0 s, OFF
Accuracy±(100 ppm of setting + 20 ms) (excluding the fall time)

*1 This setting is used only when a PASS judgment occurs. During a DC test, the voltage may not drop all the way within the set time because of the electrostatic capacity inside the product and the EUT.


Leckstromprüfung

Measurement function

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ItemTOS9303LC
Measurement itemsTCTouch current measurement
Measurement methodUses a measurement circuit network representing the impedance of a human body and measures the voltage drop across a reference resistance to calculate the touch current.
Probe settingsEnc-PeA terminal: measurement terminal (for connecting to the enclosure of the EUT) B terminal: open
Enc-EncA and B terminals: measurement terminal (for connecting to the enclosure of the EUT)
Enc-Liv Enc-NeuA terminal: measurement terminal (for connecting to the enclosure of the EUT) B terminal: open
PCCProtective conductor current measurement
Measurement methodMeasures the voltage drop across a reference resistance inserted in the middle of the protective ground line to calculate the protective conductor current. The measurement impedance is 150 Ω.
PatientPatient leakage current measurement
Measurement methodUses a network conforming to IEC 60601 and measures the voltage drop across a reference resistance to calculate the patient leakage current.
MeterMeasures the current flowing or voltage applied across the A and B terminals (simultaneous measurement not possible).
Measurement methodCurrent measurementUses a measurement circuit network representing the impedance of a human body and measures the voltage drop across a refer-ence resistance to calculate the current flowing across the A and B terminals.
Voltage measurementMeasures the voltage applied across the A and B terminals.
Current measurement modeDCEliminates AC components and measures only the DC component.
RMSMeasures the true rms value (switch AC and AC+DC)
Peak *1Measures waveform peak values

*1 Current measurements may not be stable due to the effects of the power supply line waveform or the wiring environment between the product and the EUT.


Messstromkreis-Netzwerk

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ItemTOS9303LC
NetworkA (IEC 60990 compliant) *1(1.5 kΩ // 0.22 μF) + 500 Ω, reference measurement element: 500 Ω
B (IEC 60990 compliant)(1.5 kΩ // 0.22 μF) + 500 Ω // (10 kΩ + 22 nF), reference measurement element: 500 Ω, voltage measurement U1 and U3 switchable
C (IEC 60990 compliant)(1.5 kΩ // 0.22 μF) + 500 Ω // (10 kΩ + (20 kΩ + 6.2 nF) // 9.1 nF), reference measurement element: 500 Ω, voltage measurement U1 and U3 switchable
D (Electrical Appliances and Materials Safety Act, etc.)1 kΩ, reference measurement element: 1 kΩ
E (Electrical Appliances and Materials Safety Act)1 kΩ // (10 kΩ + 11.225 nF + 579 Ω), reference measurement element:1 kΩ
F (UL and the like)1.5 kΩ // 0.15 μF, reference measurement element: 1.5 kΩ
G2 kΩ, reference measurement element: 2 kΩ
H (IEC 61010-1)375 Ω // 0.22 μF + 500 Ω, reference measurement element: 500 Ω
I (Patient, IEC60601-1wet)1 kΩ // 10 kΩ + 0.015 μF, reference measurement element: 1 kΩ
J (through)For voltmeter calibration
PCC-1150 Ω, reference measurement element: 150 Ω
PCC-2 (IEC 60598-1)150 Ω // 1.5 μF, reference measurement element: 150 Ω
Network constant toleranceResistance: ±0.1 %, capacitor 0.15 μF: ±2 %, others: ±1 %
Network accuracyA, B, C, HInput voltage vs. output voltage ratio: logical value ± 5 %(according to IEC 60990 Annex L and F)
EInput voltage vs. output voltage ratio: logical value ± 5 %
D, GReference measurement element (resistance) ± 1 %
IInput voltage vs. output voltage ratio: logical value ± 5 %

*1 Current measurements may not be stable due to the effects of the power supply line waveform or the wiring environment between the product and the EUT.


Measurement circuit network (NetworkA IEC 60990 Fig. 3 U1 measurement)

Measurement circuit network (NetworkA IEC 60990 Fig. 3 U1 measurement)

Measurement circuit network (NetworkE Electrical Appliances and Materials Safety Act multiple frequencies)

Measurement circuit network (NetworkE Electrical Appliances and Materials Safety Act multiple frequencies)

Measurement circuit network (NetworkB-U2 IEC 60990 Fig. 4 U1 measurement)

Measurement circuit network (NetworkB-U2 IEC 60990 Fig. 4 U1 measurement)

Measurement circuit network (NetworkF IEC 61029, UL)

Measurement circuit network (NetworkF IEC 61029, UL)

Measurement circuit network (NetworkB-U1 IEC 60990 Fig. 4 U2 measurement)

Measurement circuit network (NetworkB-U1 IEC 60990 Fig. 4 U2 measurement)

Measurement circuit network (NetworkG IEC 60745)

Measurement circuit network (NetworkG IEC 60745)

Measurement circuit network (NetworkC IEC 60990 Fig. 5 U3 measurement)

Measurement circuit network (NetworkC IEC 60990 Fig. 5 U3 measurement)

Measurement circuit network (NetworkI IEC 60601-1)

Measurement circuit network (NetworkI IEC 60601-1)

Measurement circuit network (NetworkD Electrical Appliances and Materials Safety Act single frequency)

Measurement circuit network (NetworkD Electrical Appliances and Materials Safety Act single frequency)

Measurement circuit network (NetworkPCC-1)

Measurement circuit network (NetworkPCC-1)

Measurement circuit network (NetworkPCC-2 IEC60598-1)

Measurement circuit network (NetworkPCC-2 IEC60598-1)


Messabschnitt

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ItemTOS9303LC
Measurement range *1Range1DC, RMS: 1.00 μA(min.) to 200.00 μA(max), Peak: 1.00 μA(min.) to 282.00 μA(max)
Range2DC, RMS: 12.50 μA(min.) to 2000.0 μA(max), Peak: 17.50 μA(min.) to 2830.0 μA(max)
Range3DC, RMS: 125.0 μA(min.) to 20.000 mA(max), Peak: 175.0 μA(min.) to 28.300 mA(max)
Range4DC, RMS: 1.250 mA(min.) to 100.00 mA(max), Peak: 1.750 mA(min.) to 100.00 mA(max)
Range switchingAuto or Fix selectable. If a measurement falls outside the measurement range of each range, the measured value blinks as a warning.
AutoThe range is set automatically according to the measurements.
FixFor TC and PCC measurements, the measurement range is selected automatically according to the UPPER value. For meter measurements, the range is fixed to the specified range.
Bandwidth switchingCan be expanded to a bandwidth that allows measurements from 0.1 Hz, which is required in the measurement of medical instruments and the like.
NormalNormal measurement bandwidth: 15 Hz to 1 MHz
ExpandExpands the measurement range to 0.1 Hz to 1 MHz
Total accuracy *2 (when network A, B, or C is used) *3Range1DC±(5.0 % of reading + 2 μA)
RMS0.1 Hz ≤ f < 15 Hz±(10.0 % of reading + 2 μA)
15 Hz ≤ f ≤ 100 kHz±(7.0 % of reading + 2 μA)
100 kHz < f ≤ 1 MHz±(10.0 % of reading + 2 μA)
Peak0.1 Hz ≤ f < 15 Hz±(10.0 % of reading + 10 μA)
15 Hz ≤ f ≤ 1 kHz±(10.0 % of reading + 10 μA)
1 kHz < f ≤ 100 kHz±(10.0 % of reading + 10 μA)
100 kHz < f ≤ 1 MHz±(20.0 % of reading + 10 μA)
Range2DC±(5.0 % of reading + 20 μA)
RMS0.1 Hz ≤ f < 15 Hz±(10.0 % of reading + 10 μA)
15 Hz ≤ f ≤ 100 kHz±(7.0 % of reading + 8 μA)
100 kHz < f ≤ 1 MHz±(10.0 % of reading + 10 μA)
Peak0.1 Hz ≤ f < 15 Hz±(10.0 % of reading + 10 μA)
15 Hz ≤ f ≤ 1 kHz±(10.0 % of reading + 10 μA)
1 kHz < f ≤ 100 kHz±(10.0 % of reading + 10 μA)
100 kHz < f ≤ 1 MHz±(20.0 % of reading + 10 μA)
Range3DC±(5.0 % of reading + 50 μA)
RMS0.1 Hz ≤ f < 15 Hz±(10.0 % of reading + 20 μA)
15 Hz ≤ f ≤ 100 kHz±(7.0 % of reading + 20 μA)
100 kHz < f ≤ 1 MHz±(10.0 % of reading + 20 μA)
Peak0.1 Hz ≤ f < 15 Hz±(10.0 % of reading + 50 μA)
15 Hz ≤ f ≤ 1 kHz±(7.0 % of reading + 50 μA)
1 kHz < f ≤ 100 kHz±(10.0 % of reading + 50 μA)
100 kHz < f ≤ 1 MHz±(20.0 % of reading + 50 μA)
Range4DC±(5.0 % of reading + 0.5 mA)
RMS0.1 Hz ≤ f < 15 Hz±(10.0 % of reading + 0.2 mA)
15 Hz ≤ f ≤ 100 kHz±(7.0 % of reading + 0.2 mA)
100 kHz < f ≤ 1 MHz±(10.0 % of reading + 0.2 mA)
Peak0.1 Hz ≤ f < 15 Hz±(10.0 % of reading + 0.5 mA)
15 Hz ≤ f ≤ 1 kHz±(7.0 % of reading + 0.5 mA)
1 kHz < f ≤ 100 kHz±(10.0 % of reading + 0.5 mA)
100 kHz < f ≤ 1 MHz±(20.0 % of reading + 0.5 mA)
Input resistance1 MΩ ± 1 %
Input capacitance200 pF or less (internal voltmeter input capacitance: 100 pF or less)
Common mode rejection ratio10 kHz or less: 60 dB or more, 10 kHz to 1 MHz: 40 dB or more
Offset cancel functionCancels up to 10 mA of the unnecessary current from measurements. OFF function available.

*1 Voltmeter band expansion is possible when network I is selected. *2 0.1 Hz ≤ f < 15 Hz is for when voltmeter band expansion (VoltMeter BandWidth) is set to Expand. Requires at least 120 second of test time. *3 A value converted to current for measurements using Network A, B, C or H with voltmeter accuracy of this product as the reference. If a network other than A, B, C or H is used, calculate as follows:
For Network D, E, or I, the ■ part of ±(□% of reading + ■A) is half the value.
For F, the ■ part is one-third the value.
For G, the ■ part is one-fourth the value.
For PCC-1 or PCC-2, the ■ part is 3.3 times the value.


Judgment feature

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ItemTOS9303LC
Behavior based on judgmentJudgment starts after the judgment delay (Judge Delay). Buzzer volume level can be set in the range of 0 (OFF) to 10 for pass and fail separately. In an auto test, the buzzer is valid only for the judgment that takes place at the end of the program.
UPPER FAILJudgment methodUPPER FAIL results when a current greater than or equal to the upper limit (Upper) is detected.
Display“U-FAIL” is displayed.
BuzzerOn
SIGNAL I/OThe Upper-FAIL signal is generated continuously until a STOP signal is received.
Lower FAILJudgment methodLOWER FAIL results when a current less than or equal to the lower limit (Lower) is detected.
Display“L-FAIL” is displayed.
BuzzerOn
SIGNAL I/OThe Lower-FAIL signal is generated continuously until a STOP signal is received.
PASSJudgment methodPASS judgment is made if U-FAIL or L-FAIL has not occurred when the test time elapses.
Display“PASS” is displayed.
BuzzerOn (fixed to 50 ms)
SIGNAL I/OThe PASS signal is generated for the length of time specified by the Pass Hold setting. If Pass Hold is set to Infinity, the PASS signal is generated continuously until a STOP signal is received.
Upper Setting rangeRANGE1DC, RMS: 0.1 μA(min.) to 200 μA(max), Peak: 0.1 μA(min.) to 282 μA(max)
RANGE2DC, RMS: 15.1 μA(min.) to 2.00 mA(max), Peak: 21.3 μA(min.) to 2.83 mA(max)
RANGE3DC, RMS: 151 μA(min.) to 20.00 mA(max), Peak: 213 μA(min.) to 28.3 mA(max)
RANGE4DC, RMS: 1.51 mA(min.) to 100 mA(max), Peak: 2.13 mA(min.) to 100 mA(max)
Lower Setting rangeA value that is -1 digit from the upper setting range.
Judgment accuracyConforms to total accuracy(Read “reading” as “upper setting” of total accuracy.)

Timer function

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ItemTOS9303LC
Judgment delay (Judge Delay)Setting range1 s to 1000 s, OFF
Accuracy±(100 ppm of setting + 20 ms)
Test timeSetting range1 s to 1000 s, OFF
Accuracy±(100 ppm of setting + 20 ms)

Other specifications

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ItemTOS9303LC
Voltage conversionDisplays the estimated current converted with the preset supply voltage (Conv Voltage), based on the voltage supplied to the EUT and the measured current. (This is invalid in meter mode.)
Setting range80.0 V to 300.0 V, OFF
Resolution0.1 V
Power supply line polarity selectionSet the polarity of the power supply line to supply to the EUT to positive or negative.
Single fault mode (Condition) selectionSet the EUT single fault mode to normal, neutral line disconnection (Fault Neu), or protective ground wire disconnection (Fault PE).
Ground checkIn the touch current test between the enclosure and power supply line, if the EUT enclosure is grounded, Contact-FAIL occurs.
Measurement checkChecks the measurement function by shorting across the A and B terminals. If an error is found, the protection function is activated.
Supply voltage measurementAC LINE (EUT)Measurement range80.0 V to 250.0 V
Resolution0.01 V
Accuracy±(3 % of reading + 1 V)
Supply current measurementAC LINE (EUT)Measurement range0.1 A to 15.00 A
Resolution0.001 A
Accuracy±(5 % of reading + 30 mA)
Power measurement(active power)Measurement range10 W to 1500 W
Accuracy±(5 % of reading + 8 W) (with the supply voltage at 80 V or more, at a load power factor of 1)
Voltage measurement across the A and B terminalsMeasurement rangeDC10.00 V to 300.0 V
RMS10.00 V to 300.0 V
Peak15.00 V to 430.0 V
Input impedanceApprox. 40 MΩ
Accuracy *1±(3 % of reading + 2 V) (measurement range fixed to AUTO)
SELV detectionSet a voltage for detecting SELV. When the value is exceeded, the DANGER LED lights.
Setting range10.0 V to 99.9 V, OFF
Resolution0.1V
Measurement terminalRated voltageBetween the A and B terminals250 V
Between the terminals and chassis250 V
Rated current100 mA
Measurement categoryCAT-II
Valid terminal displayTerminals valid for measurement are indicated on the display.
110% terminalTerminal for supplying 110% voltage of the AC line.
Power supply for the EUTNominal voltage range100 V to 240 V, 50 Hz/60 Hz
Input voltage range (allowable voltage range)85 Vac to 250 Vac
Rated output capacity1500 VA
Maximum operating current15 A (Overcurrent protection is activated at approximately 15.7 A.)
Inrush current70 Apeak max. (within 20 ms)

*1 If voltage is measured with the A and B terminals open, measurements will be easily affected by induced voltage.



Interface (Common)

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ItemTOS9300TOS9301TOS9301PDTOS9302TOS9303TOS9303LC
REMOTE5-pin DIN connector. Connect the following option to remotely control the starting and stopping of tests.
  • Remote control box RC01-TOS, RC02-TOS
  • High voltage test probe HP01A-TOS, HP02A-TOS (when the test voltage is 4 kVac 5 kVdc or less)
SIGNAL I/OD-sub 37-pin connector. For the pin arrangement
FunctionEnable/disable interlock, recall setup memories, recall auto test programs, start/stop testing, monitor the test and voltage generation status, monitor the test status, monitor judgment results, monitor the step execution status of auto tests, monitor the activation status of protection functions
Input specifications The input signals are all low-active control. The input terminal is pulled up to +12 V by a resistor. Leaving the input terminal open is equivalent to applying a high level signal.
High-level input voltage11 V to 15 V
Low-level input voltage0 V to 4 V
Low-level input current-5 mA max.
Input time width5 ms min.
Output specificationsOutput methodOpen collector output (4.5 Vdc to 30 Vdc)
Output withstanding voltage30 Vdc
Output saturation voltageApprox. 1.1 V (25 °C)
Maximum output current400 mA(TOTAL)
STATUS OUTOutput terminal of an option product.
Positive terminal (red)Outputs +24 V. Use Status Out of CONFIG settings to set the output conditions.
Negative terminal (black)+24 V circuit common.
SCANNERMINI DIN 8-pin connector. Terminal for the optional TOS9320 high voltage scanner. The maximum number of connections is 4 devices(16 channels).
USB (host)Standard type A socket, FAT32, 32 GB or less Complies with the USB 2.0 specifications; data rate: 12 Mbps (full speed)
Remote controlAll functions except turning on and off the power, key lock, and auto test can be remotely controlled.
RS232CHardwareD-sub 9-pin connector (EIA-232D compliant) Baud rate: 9600, 19200, 38400, 57600, 115200 bps Data length: 8 bits; stop bits: 1 bit; parity bit: none, flow control: none/CTS-RTS
Message terminatorLF during reception, LF during transmission.
USB (device)HardwareStandard Type B connector. Complies with the USB 2.0 specifications; data rate: 480 Mbps (high speed)
Message terminatorLF or EOM during reception, LF + EOM during transmission.
Device classComplies with the USBTMC-USB488 device class specifications.
LANHardwareIEEE 802,3 100Base-TX/10Base-T Ethernet. Auto-MDIX compliant.IPv4, RJ-45 connector.
Compliant standardsLXI 1.5 Core Specification 2011
Communication protocolVXI-11, HiSLIP, SCPI-RAW, SCPI-Telnet
Message terminatorVXI-11, HiSLIP: LF or END during reception, LF + END during transmission. SCPI-RAW: LF during reception, LF during transmission.
Display7-inch LCD

Other Functions (Common)

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ItemTOS9300TOS9301TOS9301PDTOS9302TOS9303TOS9303LC
Auto testAuto execution by combining ACW, DCW, IR, and EC. For LC, a combination is possible only using TC, PCC, and Patient.
Test condition memorySetup MemoryUp to 51 test conditions (ACW, DCW, IR, EC, PD, LC) can be saved.
Program memoryUp to 100 program (ACW, DCW, IR, EC, PD) combinations, each containing 100 steps, can be saved.
Program memory (LC)Up to 100 program (TC, PCC, Patient) combinations, each containing 100 steps, can be saved.
Test result memoryRecords up to 1000 latest test result of independent tests and auto tests. These are cleared when the power is turned off. Test results can be saved in CSV format to a USB memory device.
System clock For recording the calibration time and test times
Recordable timeUp to year 2038
Calibration period settingDisplays a warning at power-on when the specified period passes. Select whether to activate a protection function or only display a warning in the display area when a warning occurs.
Display of measured values Maximum and minimum measurements can be displayed.
NormalDisplays measurements during a test. Maximum and minimum values are not held.
Maximum and minimum value displayDisplays the maximum current measurement for withstanding voltage (ACW/DCW) tests, the minimum resistance measurement for insulation resistance (IR) tests, the resistance measurement or voltage measurement for earth continuity (EC) tests.
Test start methodDouble ActionWhen you press STOP, “READY” is shown for 0.5 seconds. A test starts only when you press START within this period.
MomentaryTests are only executed while the START switch is held down.
Start LongA test starts only when the START switch is held down for at least 1 second.
PASS judgment display time (Pass Hold)Set the time to hold the pass judgment result display (0.05 s to 10.00 s) or hold it until STOP is pressed (Infinity).
STOP signal disable (Fail Mode)It is possible to set the instrument so that fail judgment results and PROTECTION mode cannot be released from a device connected to the SIGNAL I/O connector or REMOTE connector.
Key lockLock the operation of the keys to prevent changing the settings or overwriting memory or programs by mistake.
Protection functions If a protection function is activated during a test, the output is shut off and the test is stopped immediately.In an LC test, the power supply to the EUT is stopped, and the A and B terminals are opened.Conditions that cause a protection function to be activated are as follows.
INTERLOCKInterlock is activated.
POWER SUPPLYThere is an error in the power supply section.
OUTPUT ERRORAn output voltage outside of the following range is detected. ACW, DCW, IR test, PD test: ±(10 % of setting + 50 V) EC test: ±(10 % of setting + 2 A)
OVER LOADAn output power or output current outside of the following range is detected.
ACW: 550 VA, DCW: 110 W or 50 mA, IR (7200 V test): 110 W or 25 mA, IR (-1000 V test): 2 mA, EC: 240 VA, LC: AC LINE OUT current at approx. 15.7 A or power at 1600 VA.
OVER HEATThe internal temperature of the product is abnormally high.
OVER RATINGDuring a withstanding voltage test, an output current is generated for a length of time that exceeds the output time limit.
CALThe preset calibration period is exceeded.
REMOTEThe REMOTE connector is connected or disconnected.
SIGNAL I/OThere is a change in the SIGNAL I/O connector’s ENABLE signal.
COMMUNICATIONAn internal communication error is occurring.
OVER RANGEA value exceeding the maximum value of the measurement range is detected.
MEASUREAn error is detected in the LC test measurement check.
SHORTA relay operation error is detected in an LC test.
EARTH FAULTWhen the grounding mode (GND) is set to Guard, abnormal current flows from the high voltage output of this product to ground.
SCAN I/FWhile scanning, the interface cable is disconnected. Or, the channel-assigned scanner is not detected.

Other Functions (Common)

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ItemTOS9300TOS9301TOS9301PDTOS9302TOS9303TOS9303LC
Backup battery life3 years (at 25 °C or 77 °F)
EnvironmentInstallation locationIndoors, 2000 m or less
Spec guaranteed rangeTemperature5 °C to 35 °C (41 °F to 95 °F)(18 °C to 28 °C for partial discharge tests)
Humidity20 %rh to 80 %rh (20 %rh to 70 %rh for partial discharge tests)(no condensation)
Operating rangeTemperature0 °C to 40 °C (32 °F to 104 °F)
Humidity20 %rh to 80 %rh (no condensation)
Storage rangeTemperature-20 °C to 70 °C (-4 °F to 158 °F)
Humidity90 %rh or less (no condensation)
Power supplyNominal voltage range (allowable voltage range)100 Vac to 120 V, 200 V to 240 V (90 Vac to 132 V, 170 V to 250 V)
Power consumptionNo load(READY state)100 VA or less
Rated load800 VA max.
Allowable frequency range47 Hz to 63 Hz
Insulation resistance (between AC LINE and chassis)30 MΩ or more (500 Vdc)
Withstanding voltage (between AC LINE and chassis)1500 Vac, 1 minute, 20 mA or less
Earth continuity25 Aac, 0.1 Ω or less
WeightApprox. 17 kgApprox. 18 kgApprox. 22 kgApprox. 20 kgApprox. 21 kgApprox. 22 kg
AccessoriesPower cord (1 pc., *length: 2.5 m : The attached power cord varies depending on the shipment destination.), High-voltage test lead: TL31-TOS (1 pair), SIGNAL I/O plug (1 set), High-voltage warning sticker (1 pc.), Setup Guide (1 copy), CD-ROM (1 disc), Safety Information (1 copy), Heavy object warning label (1 pc., *Not included with the TOS9300), Test leads for earth continuity test: TL13-TOS (1 pair., *TOS9302, TOS9303,TOS9303LC only), [TOS9303LC only: Spare fuse (1 pc.), Test leads for leakage current test (2 red, 1 black), Flat probe (1 sheet)]
Electromagnetic compatibility *1 *2Complies with the requirements of the following directive and standards. EMC Directive 2014/30/EU EN 61326-1 (Class A *3), EN 55011 (Class A *3, Group 1 *4), EN 61000-3-2, EN 61000-3-3 Applicable under the following conditions The maximum length of all cabling and wiring connected to the product must be less than 2.5 m.Shielded cables are being used when using the SIGNAL I/O.The high-voltage test lead TL31-TOS is in use.Electrical discharges are applied only to the EUT.
Safety *1Complies with the requirements of the following directive and standards. Low Voltage Directive 2014/35/EU *2, EN 61010-1 (Class I *5 , Pollution Degree 2 *6)

*1 Does not apply to specially ordered or modified products. *2 Only on models that have CE/UKCA marking on the panel. *3 This is a Class A instrument. This product is intended for use in an industrial environment. This product may cause interference if used in residential areas. Such use must be avoided unless the user takes special measures to reduce electromagnetic emissions to prevent interference to the reception of radio and television broadcasts. *4 This is a Group 1 instrument. This product does not generate and/or use intentionally radio-frequency energy, in the form of electromagnetic radiation, inductive and/or capacitive coupling, for the treatment of material or inspection/analysis purpose. *5 This is a Class I instrument. Be sure to ground this product’s protective conductor terminal. The safety of this product is guaranteed only when the product is properly grounded. *6 Pollution is addition of foreign matter (solid, liquid or gaseous) that may produce a reduction of dielectric strength or surface resistivity. Pollution Degree 2 assumes that only non- conductive pollution will occur except for an occasional temporary conductivity caused by condensation.


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