Dimensions / Weight

	W	H	D
Dimensions	430 mm (16.93 inch)	132 mm (5.2 inch)	370 mm (14.57 inch)

Weight : Approx.18 kg(39.69 lbs)

Safety Testers AC Hipot Tester DC withstand voltage tester Insulation Resistance Test Electrical Safety Standard Test

Hipot Tester with Insulation Resistance Test

TOS9301

550,000円（税込：605,000円）

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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SKU: TOS9301

Specifications

Withstanding Voltage Test

AC Output function

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AC output section			TOS9300
AC output section	Output range		0.050 kV to 5.000 kV
		Resolution	1 V
		Setting accuracy	±(1.2 % of setting + 0.02 kV) (at no load)
	Max. rated load *1		500 VA(5 kV / 100 mA)
	Max. rated current		100 mA (when the output voltage is 0.2 kV or higher)
	Transformer rating		500 VA
	Output voltage waveform *2		Sine
	Output voltage waveform *2	Distortion	2 % 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
	Frequency	Accuracy	±0.1 %
	Voltage regulation		±3 % or less (when changing from maximum rated load to no load)
	Short-circuit current		200 mA or more (output voltage 0.5 kV or higher)
	Output method		PWM switching
Start voltage			The voltage at the start of the test can be set.
		Setting range	1 % to 99 % of the test voltage
		Resolution	1%
Output voltage monitor function			If 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 section			TOS9301
DC output section	Output range		0.050 kV to 7.200 kV
		Resolution	1 V
		Setting accuracy	±(1.2 % of setting + 0.02 kV)
	Max. rated load *1		100 W (5 kV/20 mA, 7.2 kV/13.9 mA)
	Max. rated current		20 mA
	Ripple	7.2 kV no load	20 Vp-p (TYP)
	Ripple	Max. rated load	50 Vp-p (TYP)
	Voltage regulation		1 % or less (when changing from maximum rated load to no load)
	Short-circuit current		100 mA (TYP) (200 mA peak)
	Discharge function		Forced discharge after test completion (discharge resistance: 125 kΩ)
Start voltage			The voltage at the start of the test can be set.
		Setting range	1 % to 99 % of the test voltage
		Resolution	1%
Output voltage monitor function			If 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 section		TOS9300
Voltmeter	Measurement range	0 kV to 7.5 kV AC/DC
	Resolution	0.1 V
	Accuracy	±(1.2 % of reading + 0.005 kV)
	Response	Can be switched between true rms and mean-value response rms conversion.
	Response	Peak-value response in a separate system (the peak-value response is for measuring the dielectric breakdown voltage while rising)
	Hold function	The voltage measurement after a test is finished is held while the pass/fail judgment is displayed.
Ammeter 1 2	Measurement range	AC: 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)
	Response	Can be switched between true rms and mean-value response rms conversion.
	Hold function	The current measurement after a test is finished is held while the pass judgment is displayed.
	Offset cancel function	Cancels 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.
	Calibration	Active 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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Item			TOS9300
Current judgment operation			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 FAIL	Judgment method	UPPER 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.
		Buzzer	On
		SIGNAL I/O	The Upper-FAIL signal is generated continuously until a STOP signal is received.
	Lower FAIL	Judgment method	LOWER 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.
		Buzzer	On
		SIGNAL I/O	The Lower-FAIL signal is generated continuously until a STOP signal is received.
	PASS	Judgment method	PASS judgment is made if U-FAIL or L-FAIL has not occurred when the test time elapses.
		Display	“PASS” is displayed.
		Buzzer	On (fixed to 50 ms)
		SIGNAL I/O	The 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 operation			Monitors 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 FAIL	Judgment method	When the voltage rise rate (dV/dt) is less than approx. 1 V/s.
		Display	“ Upper-FAIL(dv/dt)” is displayed.
		Buzzer	On
		SIGNAL I/O	The U-FAIL signal is generated continuously until a STOP signal is received.
Upper limit setting range			AC: 0.01 mA to 110.00 mA, DC: 0.01 mA to 21.00 mA
Lower limit setting range			AC: 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 method			Compares to the reference value using the following method. Calculate true rms values, convert mean-value responses to rms values
Response speed (filter) switching			Switches the current detection response speed (sensitivity) used in UPPER FAIL judgment between five levels in ACW and DCW tests.

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Item			TOS9300
Current judgment operation			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 FAIL	Judgment method	UPPER 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.
		Buzzer	On
		SIGNAL I/O	The Upper-FAIL signal is generated continuously until a STOP signal is received.
	Lower FAIL	Judgment method	LOWER 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.
		Buzzer	On
		SIGNAL I/O	The Lower-FAIL signal is generated continuously until a STOP signal is received.
	PASS	Judgment method	PASS judgment is made if U-FAIL or L-FAIL has not occurred when the test time elapses.
		Display	“PASS” is displayed.
		Buzzer	On (fixed to 50 ms)
		SIGNAL I/O	The 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 operation			Monitors 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 FAIL	Judgment method	When the voltage rise rate (dV/dt) is less than approx. 1 V/s.
		Display	“ Upper-FAIL(dv/dt)” is displayed.
		Buzzer	On
		SIGNAL I/O	The U-FAIL signal is generated continuously until a STOP signal is received.
Upper limit setting range			AC: 0.01 mA to 110.00 mA, DC: 0.01 mA to 21.00 mA
Lower limit setting range			AC: 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 method			Compares to the reference value using the following method. Calculate true rms values, convert mean-value responses to rms values
Response speed (filter) switching			Switches the current detection response speed (sensitivity) used in UPPER FAIL judgment between five levels in ACW and DCW tests.

Timer function

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AC output section	TOS9300	TOS9301	TOS9301PD	TOS9302	TOS9303	TOS9303LC
Current rise time settings range	0.1 s to 200.0 s
Current fall time setting time *1	0.1 s to 200.0 s, OFF
Test time setting range	0.1 s to 1000.0 s, OFF
Judgment delay (Judge Delay) setting range *2	0.1 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 section		TOS9300
Analog monitor *1		Outputs a voltage signal according to the current waveform or voltage waveform
	I	Current waveform: Scale 50 mA/1 V
	V	Voltage waveform: Scale 1 kV/1 V
Grounding mode (GND)		Can be switched between Low and Guard.
	Low	GND is connected to the low terminal. Measures the current flowing across the low terminal and chassis (normal applications).
	Guard *2	GND 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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Item			TOS9300	TOS9301
Negative polarity	Output voltage range		-0.025 kV to -1 kV
		Resolution	1 V
		Setting accuracy	±(1.2 % of setting + 0.002 kV)
	Max. rated load		1 W (-1 kV/1 mA)
	Ripple	1 kV no load	2 Vp-p or less
		Max. rated load	10 Vp-p or less
	Short-circuit current		12 mA or less
Positive polarity *1	Output voltage range		–	+0.05 kV to +7.2 kV
		Resolution		1 V
		Setting accuracy		±(1.2 % of setting + 0.02 kV)
	Max. rated load			7.2 W(7.2 kV/1 mA)
	Ripple	1 kV no load		20 Vp-p or less
	Ripple	Max. rated load		50 Vp-p or less
	Short-circuit current			100 mA (TYP) (200 mA peak)
Max. rated current			1 mA
Voltage regulation			1 % or less (when changing from maximum rated load to no load)
Discharge function			Forced discharge after test completion (discharge resistance: 20 kΩ)
Output voltage monitor function			If 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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Item			TOS9300
Voltmeter	Measurement range		Negative polarity: 0 Vdc to -1200 Vdc, positive polarity: 0 Vdc to 7500 Vdc
	Resolution		0.1 V
	Accuracy		Negative polarity: ±(1 % of reading + 1 V), positive polarity: ±(1.2 % of reading + 1 V)
Resistance meter	Measurement range		0.001 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 *3	500.000 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 *3	200.000 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 *4	100.000 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 *4	10.000 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 *4	0.001 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 *3	500.000 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 *3	200.000 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 *4	100.000 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 *4	10.000 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 *4	0.001 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 function		The resistance measurement after a test is finished is held while the pass judgment is displayed.
	Offset cancel function		Cancels 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.

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Item			TOS9300
Voltmeter	Measurement range		Negative polarity: 0 Vdc to -1200 Vdc, positive polarity: 0 Vdc to 7500 Vdc
	Resolution		0.1 V
	Accuracy		Negative polarity: ±(1 % of reading + 1 V), positive polarity: ±(1.2 % of reading + 1 V)
Resistance meter	Measurement range		0.001 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 *3	500.000 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 *3	200.000 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 *4	100.000 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 *4	10.000 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 *4	0.001 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 *3	500.000 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 *3	200.000 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 *4	100.000 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 *4	10.000 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 *4	0.001 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 function		The resistance measurement after a test is finished is held while the pass judgment is displayed.
	Offset cancel function		Cancels up to 2000 GΩ of the unnecessary insulation resistance across output cables and the like. OFF function available.

Judgment feature

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Item			TOS9300
Behavior based on judgment			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 FAIL	Judgment method	UPPER 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.
		Buzzer	On
		SIGNAL I/O	The Upper-FAIL signal is generated continuously until a STOP signal is received.
	Lower FAIL	Judgment method	LOWER 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.
		Buzzer	On
		SIGNAL I/O	The Lower-FAIL signal is generated continuously until a STOP signal is received.
	PASS	Judgment method	PASS judgment is made if U-FAIL or L-FAIL has not occurred when the test time elapses.
		Display	“PASS” is displayed.
		Buzzer	On (fixed to 50 ms)
		SIGNAL I/O	The 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 operation			Monitors 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 FAIL	Judgment method	When the voltage rise rate (dV/dt) is less than 1 V/s.
		Display	“ Lower-FAIL(dv/dt)” is displayed.
		Buzzer	On
		SIGNAL I/O	The L FAIL signals are generated continuously until a STOP signal is received.
Upper limit setting range			0.001 MΩ to 100.000 GΩ (in the range up to the maximum rated current), OFF
Lower limit setting range			0.000 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 *4	500.000 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 *4	200.000 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 *5	100.000 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 *5	10.000 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 *5	0.001 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 *4	500.000 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 *4	200.000 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 *5	100.000 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 *5	10.000 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 *5	0.001 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.

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Item			TOS9300
Behavior based on judgment			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 FAIL	Judgment method	UPPER 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.
		Buzzer	On
		SIGNAL I/O	The Upper-FAIL signal is generated continuously until a STOP signal is received.
	Lower FAIL	Judgment method	LOWER 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.
		Buzzer	On
		SIGNAL I/O	The Lower-FAIL signal is generated continuously until a STOP signal is received.
	PASS	Judgment method	PASS judgment is made if U-FAIL or L-FAIL has not occurred when the test time elapses.
		Display	“PASS” is displayed.
		Buzzer	On (fixed to 50 ms)
		SIGNAL I/O	The 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 operation			Monitors 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 FAIL	Judgment method	When the voltage rise rate (dV/dt) is less than 1 V/s.
		Display	“ Lower-FAIL(dv/dt)” is displayed.
		Buzzer	On
		SIGNAL I/O	The L FAIL signals are generated continuously until a STOP signal is received.
Upper limit setting range			0.001 MΩ to 100.000 GΩ (in the range up to the maximum rated current), OFF
Lower limit setting range			0.000 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 *4	500.000 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 *4	200.000 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 *5	100.000 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 *5	10.000 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 *5	0.001 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 *4	500.000 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 *4	200.000 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 *5	100.000 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 *5	10.000 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 *5	0.001 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)

Timer function

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Item	TOS9300	TOS9301	TOS9301PD	TOS9303	TOS9303LC
Current rise time settings range	0.1 s to 200.0 s
Test time setting range	0.1 s to 1000.0 s, OFF
Judgment delay (Judge Delay) setting range *1	0.1 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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Item		TOS9300
Grounding mode (GND)		Can be switched between Low and Guard.
	Low	GND is connected to the low terminal. Measures the current flowing across the low terminal and chassis (normal applications).
	Guard *1	GND 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 function		A 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.

Interface (Common)

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Item			TOS9300
REMOTE			5-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/O			D-sub 37-pin connector. For the pin arrangement
	Function		Enable/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 voltage	11 V to 15 V
		Low-level input voltage	0 V to 4 V
		Low-level input current	-5 mA max.
		Input time width	5 ms min.
	Output specifications	Output method	Open collector output (4.5 Vdc to 30 Vdc)
		Output withstanding voltage	30 Vdc
		Output saturation voltage	Approx. 1.1 V (25 °C)
		Maximum output current	400 mA(TOTAL)
STATUS OUT			Output 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.
SCANNER			MINI 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 control			All functions except turning on and off the power, key lock, and auto test can be remotely controlled.
	RS232C	Hardware	D-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
	RS232C	Message terminator	LF during reception, LF during transmission.
	USB (device)	Hardware	Standard Type B connector. Complies with the USB 2.0 specifications; data rate: 480 Mbps (high speed)
		Message terminator	LF or EOM during reception, LF + EOM during transmission.
		Device class	Complies with the USBTMC-USB488 device class specifications.
	LAN	Hardware	IEEE 802,3 100Base-TX/10Base-T Ethernet. Auto-MDIX compliant.IPv4, RJ-45 connector.
		Compliant standards	LXI 1.5 Core Specification 2011
		Communication protocol	VXI-11, HiSLIP, SCPI-RAW, SCPI-Telnet
		Message terminator	VXI-11, HiSLIP: LF or END during reception, LF + END during transmission. SCPI-RAW: LF during reception, LF during transmission.
Display			7-inch LCD

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Item			TOS9300
REMOTE			5-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/O			D-sub 37-pin connector. For the pin arrangement
	Function		Enable/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 voltage	11 V to 15 V
		Low-level input voltage	0 V to 4 V
		Low-level input current	-5 mA max.
		Input time width	5 ms min.
	Output specifications	Output method	Open collector output (4.5 Vdc to 30 Vdc)
		Output withstanding voltage	30 Vdc
		Output saturation voltage	Approx. 1.1 V (25 °C)
		Maximum output current	400 mA(TOTAL)
STATUS OUT			Output 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.
SCANNER			MINI 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 control			All functions except turning on and off the power, key lock, and auto test can be remotely controlled.
	RS232C	Hardware	D-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
	RS232C	Message terminator	LF during reception, LF during transmission.
	USB (device)	Hardware	Standard Type B connector. Complies with the USB 2.0 specifications; data rate: 480 Mbps (high speed)
		Message terminator	LF or EOM during reception, LF + EOM during transmission.
		Device class	Complies with the USBTMC-USB488 device class specifications.
	LAN	Hardware	IEEE 802,3 100Base-TX/10Base-T Ethernet. Auto-MDIX compliant.IPv4, RJ-45 connector.
		Compliant standards	LXI 1.5 Core Specification 2011
		Communication protocol	VXI-11, HiSLIP, SCPI-RAW, SCPI-Telnet
		Message terminator	VXI-11, HiSLIP: LF or END during reception, LF + END during transmission. SCPI-RAW: LF during reception, LF during transmission.
Display			7-inch LCD

Other Functions (Common)

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Item		TOS9300
Auto test		Auto execution by combining ACW, DCW, IR, and EC. For LC, a combination is possible only using TC, PCC, and Patient.
Test condition memory	Setup Memory	Up to 51 test conditions (ACW, DCW, IR, EC, PD, LC) can be saved.
	Program memory	Up 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 memory		Records 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 time	Up to year 2038
	Calibration period setting	Displays 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.
	Normal	Displays measurements during a test. Maximum and minimum values are not held.
	Maximum and minimum value display	Displays 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 method	Double Action	When you press STOP, “READY” is shown for 0.5 seconds. A test starts only when you press START within this period.
	Momentary	Tests are only executed while the START switch is held down.
	Start Long	A 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 lock		Lock 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.
	INTERLOCK	Interlock is activated.
	POWER SUPPLY	There is an error in the power supply section.
	OUTPUT ERROR	An 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 LOAD	An 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 HEAT	The internal temperature of the product is abnormally high.
	OVER RATING	During a withstanding voltage test, an output current is generated for a length of time that exceeds the output time limit.
	CAL	The preset calibration period is exceeded.
	REMOTE	The REMOTE connector is connected or disconnected.
	SIGNAL I/O	There is a change in the SIGNAL I/O connector’s ENABLE signal.
	COMMUNICATION	An internal communication error is occurring.
	OVER RANGE	A value exceeding the maximum value of the measurement range is detected.
	MEASURE	An error is detected in the LC test measurement check.
	SHORT	A relay operation error is detected in an LC test.
	EARTH FAULT	When the grounding mode (GND) is set to Guard, abnormal current flows from the high voltage output of this product to ground.
	SCAN I/F	While scanning, the interface cable is disconnected. Or, the channel-assigned scanner is not detected.

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Item		TOS9300
Auto test		Auto execution by combining ACW, DCW, IR, and EC. For LC, a combination is possible only using TC, PCC, and Patient.
Test condition memory	Setup Memory	Up to 51 test conditions (ACW, DCW, IR, EC, PD, LC) can be saved.
	Program memory	Up 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 memory		Records 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 time	Up to year 2038
	Calibration period setting	Displays 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.
	Normal	Displays measurements during a test. Maximum and minimum values are not held.
	Maximum and minimum value display	Displays 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 method	Double Action	When you press STOP, “READY” is shown for 0.5 seconds. A test starts only when you press START within this period.
	Momentary	Tests are only executed while the START switch is held down.
	Start Long	A 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 lock		Lock 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.
	INTERLOCK	Interlock is activated.
	POWER SUPPLY	There is an error in the power supply section.
	OUTPUT ERROR	An 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 LOAD	An 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 HEAT	The internal temperature of the product is abnormally high.
	OVER RATING	During a withstanding voltage test, an output current is generated for a length of time that exceeds the output time limit.
	CAL	The preset calibration period is exceeded.
	REMOTE	The REMOTE connector is connected or disconnected.
	SIGNAL I/O	There is a change in the SIGNAL I/O connector’s ENABLE signal.
	COMMUNICATION	An internal communication error is occurring.
	OVER RANGE	A value exceeding the maximum value of the measurement range is detected.
	MEASURE	An error is detected in the LC test measurement check.
	SHORT	A relay operation error is detected in an LC test.
	EARTH FAULT	When the grounding mode (GND) is set to Guard, abnormal current flows from the high voltage output of this product to ground.
	SCAN I/F	While scanning, the interface cable is disconnected. Or, the channel-assigned scanner is not detected.

Other Functions (Common)

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Item			TOS9300	TOS9301	TOS9301PD	TOS9302	TOS9303	TOS9303LC
Backup battery life			3 years (at 25 °C or 77 °F)
Environment	Installation location		Indoors, 2000 m or less
	Spec guaranteed range	Temperature	5 °C to 35 °C (41 °F to 95 °F)(18 °C to 28 °C for partial discharge tests)
	Spec guaranteed range	Humidity	20 %rh to 80 %rh (20 %rh to 70 %rh for partial discharge tests)(no condensation)
	Operating range	Temperature	0 °C to 40 °C (32 °F to 104 °F)
	Operating range	Humidity	20 %rh to 80 %rh (no condensation)
	Storage range	Temperature	-20 °C to 70 °C (-4 °F to 158 °F)
	Storage range	Humidity	90 %rh or less (no condensation)
Power supply	Nominal 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 consumption	No load(READY state)	100 VA or less
	Power consumption	Rated load	800 VA max.
	Allowable frequency range		47 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 continuity			25 Aac, 0.1 Ω or less
Weight			Approx. 17 kg	Approx. 18 kg	Approx. 22 kg	Approx. 20 kg	Approx. 21 kg	Approx. 22 kg
Accessories			Power 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 2			Complies 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 *1			Complies 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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Item			TOS9300	TOS9301	TOS9301PD	TOS9302	TOS9303	TOS9303LC
Backup battery life			3 years (at 25 °C or 77 °F)
Environment	Installation location		Indoors, 2000 m or less
	Spec guaranteed range	Temperature	5 °C to 35 °C (41 °F to 95 °F)(18 °C to 28 °C for partial discharge tests)
	Spec guaranteed range	Humidity	20 %rh to 80 %rh (20 %rh to 70 %rh for partial discharge tests)(no condensation)
	Operating range	Temperature	0 °C to 40 °C (32 °F to 104 °F)
	Operating range	Humidity	20 %rh to 80 %rh (no condensation)
	Storage range	Temperature	-20 °C to 70 °C (-4 °F to 158 °F)
	Storage range	Humidity	90 %rh or less (no condensation)
Power supply	Nominal 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 consumption	No load(READY state)	100 VA or less
	Power consumption	Rated load	800 VA max.
	Allowable frequency range		47 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 continuity			25 Aac, 0.1 Ω or less
Weight			Approx. 17 kg	Approx. 18 kg	Approx. 22 kg	Approx. 20 kg	Approx. 21 kg	Approx. 22 kg
Accessories			Power 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 2			Complies 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 *1			Complies 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)