TOS9300 Series Kikusui – Electrical Safety Multi-analyzer – Thiết bị kiểm tra an toàn điện

Tiêu chuẩn kiểm tra an toàn điện cho các bộ phận ô tô

Tương thích với cả AC và DC, TOS9303LC tuân thủ nhiều loại thử nghiệm an toàn cho pin EV, thiết bị sạc ô tô và đầu nối sạc.

Máy phân tích an toàn “tất cả trong một” này có thể đáp ứng nhu cầu của hầu hết mọi tiêu chuẩn an toàn điện ô tô.

Kiểm tra điện áp chịu đựng/điện trở cách điện của mô-đun PV (pin mặt trời)

Các thử nghiệm chịu điện áp như IEC61730-2 và JIS C 8992-2 yêu cầu điện áp thử nghiệm phải được tăng đáng kể (gấp 4 lần điện áp hệ thống tối đa + 2000 V) và duy trì trong 1 phút.

Phóng điện cục bộ

【EUT (ví dụ): động cơ nhỏ, máy biến áp, vật liệu cách điện, v.v.】

Thử nghiệm phóng điện cục bộ phát hiện trạng thái trước khi đánh thủng điện môi, do đó có thể phát hiện các khuyết tật tiềm ẩn và biến thể sản xuất mà thử nghiệm điện áp chịu đựng thông thường không thể phát hiện được.

Withstanding Voltage Test

AC Output function

AC output section			TOS9300	TOS9301	TOS9301PD	TOS9302	TOS9303	TOS9303LC
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
		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
		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

AC output section			TOS9301	TOS9301PD	TOS9303	TOS9303LC
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)
		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

AC output section		TOS9300	TOS9301	TOS9301PD	TOS9302	TOS9303	TOS9303LC
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.
		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.

Judgment feature

Item			TOS9300	TOS9301	TOS9301PD	TOS9302	TOS9303	TOS9303LC
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.

*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

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)

Other specifications

AC output section		TOS9300	TOS9301	TOS9301PD	TOS9302	TOS9303	TOS9303LC
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

Item			TOS9300	TOS9301	TOS9301PD	TOS9303	TOS9303LC
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
		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

Item			TOS9300	TOS9301	TOS9301PD	TOS9303	TOS9303LC
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.

Judgment Function

Item			TOS9300	TOS9301	TOS9301PD	TOS9303	TOS9303LC
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.

Timer function

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

Item		TOS9300	TOS9301	TOS9301PD	TOS9303	TOS9303LC
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.

Earth Continuity Test

Output function

Item			TOS9302	TOS9303	TOS9303LC
Current setting range *1			3.0 A to 42.0 A AC/DC
		Resolution	0.1 A
		Accuracy	±(1 % of setting + 0.4 A)
AC	Maximum rated output *2		220 VA (at the output terminal)
	Distortion		2 % or less (20 A or more, using a 0.1 Ω pure resistive load)
	Frequency		Select 50 Hz or 60 Hz. Sine
		Accuracy	±200 ppm
	Open terminal voltage		6 Vrms or less
	Output method		PWM switching
DC	Maximum rated output		220 W (at the output terminal)
	Ripple		±0.4 Ap-p or less (TYP)
	Open terminal voltage		6.0 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

Item		TOS9302	TOS9303	TOS9303LC
Output ammeter	Measurement range	0.0 A to 45.0 A AC/DC
	Resolution	0.01 A
	Accuracy	±(1 % of reading + 0.2 A)
	Response	AC: true rms value: DC: mean value
	Hold function	The current measurement after a test is finished is held while the pass or fail judgment is displayed.
Output voltmeter	Measurement range	AC: 0.00 V to 6.00 V, DC: 0.00 V to 8.50 V
	Resolution	0.001 V
	Offset cancel function	Cancels up to 5 V (AC/DC) of the unnecessary voltage from measurements. OFF function available.
	Accuracy	±(1 % of setting + 0.02 V)
	Response	AC: true rms value: DC: mean value
	Hold function	The voltage measurement after a test is finished is held while the pass or fail judgment is displayed.
Resistance meter	Measurement range *1	1 mΩ to 600 mΩ
	Resolution	1 mΩ
	Offset cancel function	Cancels up to 10 Ω of the unnecessary resistance from measurements. OFF function available.
	Accuracy	±(2 % of reading + 3 mΩ)
	Hold function	The 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

Item			TOS9302	TOS9303	TOS9303LC
Behavior based on judgment			Judgment 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 FAIL	Judgment method	UPPER 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.
		Buzzer	On
		SIGNAL I/O	The U-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 (Lower) is detected or when a sensing voltage is detected.
		Display	“L-FAIL” is displayed.
		Buzzer	On
		SIGNAL I/O	The L-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.
Resistance judgment	Upper limit setting range		0.0001 Ω to 10.0000 Ω
	Lower limit setting range		0.0000 Ω to 9.9999 Ω
	Judgment accuracy		±(2 % of setting + 3 mΩ)
Voltage judgment	Upper limit setting range		0.001 V to 5.000 V AC/DC
	Lower limit setting range		0.000 V to 4.999 V AC/DC
	Judgment accuracy		±(2 % of setting + 0.05 V)
Calibration			Calibrated using a pure resistive load (with the rms of a sine wave for AC)
Contact check function			Checks that current flows through the test leads and then starts the test. (OFF setting available)

Timer function

Item	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	0.1 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.

Partial Discharge Test

Output function

AC output section			TOS9301PD
AC output section	Output voltage range		0.050 kV to 5.000 kV
		Resolution	1 V
		Setting accuracy	±(1.2% of setting + 0.02kV) (at no load)
	Max. rated load		250 VA (5 kV/ 50mA)
	Max. rated current		50 mA (when the output voltage is 0.2 kV or higher)
Positive polarity *1	Output voltage waveform*1		Sine
		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 V or higher)
	Frequency		50 Hz/60 Hz
		Accuracy	±0.1 %
	Voltage regulation		±3 % or less (when changing from maximum rated load to no load)
	Output method		PWM switching
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.

Measurement function

AC output section			TOS9301PD
Voltmeter	Measurement range		0.00 kV to 7.50 kV AC/DC
	Resolution		0.1 V
	Accuracy		±(1.2 % of reading + 0.05 kV)
	Response		Can be switched between true rms and peak-value 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.
Electric charge measurement	Electric charge measurement method		IEC60664-1 Edition 3.0 compliant
	Measurement range		0 pC to 10000 pC
	Measurement resolution	100pC range	0.1pC
		1000pC range	0.1pC
		10000pC rang	1 pC
	Accuracy *1	100pC range	±(5 % of full scale + 7 pC)
		1000pC range	±(5 % of full scale)
		10000pC rang	±(5 % of full scale)
	Measurement interval		Determined based on the measured values in each cycle of an applied voltage.
	Hold function		The electric charge after a test is finished is held while the pass judgment is displayed.
	Maximum electrostatic capacity of the EUT		10 nF
	Peak hold function		Holds the maximum value during a measurement.
	Filter function		A low-pass filter can be inserted into the electric charge measurement circuit.
	Discharge inception voltage, discharge inception voltage measurement		Measures the voltage at which discharge exceeding a preset electric charge starts and the voltage at which discharge ceases (complies with IEC60664-1 third edition).
	Calibration (Precalibration)		Calibrate using the built-in calibration capacitor (1000 pF).
	Pulse counting function		Counts the number of pulses that have passed through the high-pass filter and makes a FAIL judgment if the count exceeds the upper limit.
		Upper limit setting range	1 to 100000
	BPF characteristics switching function		Can switch the characteristics of the band-pass filter in the electric charge measuring circuit
		Center frequency	100 kHz / 160 kHz / 300 kHz
	Coupling capacitor		0.01 μF

Judgment feature

AC output section			TOS9301PD
Electric discharge judgment			The output is shut off when a judgment is made.
	UPPER FAIL (Current)	Judgment method	A current higher than or equal to the upper limit is measured.
		Display	“Upper-FAIL (Current)” is displayed.
		Buzzer	On
		SIGNAL I/O	The Upper-FAIL signal is generated continuously until a STOP signal is received.
	UPPER FAIL (Coulomb)	Judgment method	An electric charge greater than or equal to the upper limit is measured.
		Display	“Upper-FAIL (Coulomb)” is displayed.
		Buzzer	On
		SIGNAL I/O	The Upper-FAIL signal is generated continuously until a STOP signal is received.
	UPPER FAIL (Pulse)	Judgment method	A discharge pulse count greater than or equal to the upper limit is measured.
		Display	“Upper-FAIL (Pulse)” is displayed.
		Buzzer	On
		SIGNAL I/O	The Upper-FAIL signal is generated continuously until a STOP signal is received.
	PASS	Judgment method	Upper-FAIL does not happen after the test time has elapsed.
		Display	“PASS” is displayed.
		Buzzer	On
		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.
Upper current limit			50 mA (with no calibration)
Upper limit of electric charge (Upper Coulomb)		Setting range	1 pC to 10000 pC
		Accuracy	As per the accuracy of electric charge measurement
Pulse count judgment criteria (Upper Pulse Count) setting range			1 to 100000 (with no calibration)

Timer function

AC output section	TOS9301PD
Voltage rise time (Rise Time) setting range	0.1 s to 200.0 s
Voltage fall time (Fall Time) setting range *1	0.1 s to 200.0 s, OFF
Test time setting range	0.1 s to 1000.0 s, OFF
Accuracy	±(100 ppm of setting + 20 ms) (excluding Fall Time)

*1 This setting is used only when PASS judgment occurs.

Other specifications

AC output section		TOS9301PD
Analog monitor *1		Outputs a voltage signal according to the current waveform, voltage waveform, or electric discharge waveforms.
	V	Voltage waveform: Scale 1kV/1V
	Qpd	Electric discharge: Full scale of the scale measurement range/10 V
	Ipd *2	Partial discharge current waveform

*1 Monitor signal output is isolated from the chassis (earth). *2 The lpd waveforms are the ones that can be obtained after the actual discharge waveforms have passed the TOS9301PD measurement filter. Therefore, the scale varies according to the frequency response of the discharge waveform.

Leckstromprüfung

Measurement function

Item				TOS9303LC
Measurement items	TC			Touch current measurement
		Measurement method		Uses 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 settings	Enc-Pe	A terminal: measurement terminal (for connecting to the enclosure of the EUT) B terminal: open
			Enc-Enc	A and B terminals: measurement terminal (for connecting to the enclosure of the EUT)
			Enc-Liv Enc-Neu	A terminal: measurement terminal (for connecting to the enclosure of the EUT) B terminal: open
	PCC			Protective conductor current measurement
		Measurement method		Measures 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.
	Patient			Patient leakage current measurement
		Measurement method		Uses a network conforming to IEC 60601 and measures the voltage drop across a reference resistance to calculate the patient leakage current.
	Meter			Measures the current flowing or voltage applied across the A and B terminals (simultaneous measurement not possible).
		Measurement method	Current measurement	Uses 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 measurement	Measures the voltage applied across the A and B terminals.
Current measurement mode			DC	Eliminates AC components and measures only the DC component.
			RMS	Measures the true rms value (switch AC and AC+DC)
			Peak *1	Measures 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

Item		TOS9303LC
Network	A (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
	G	2 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-1	150 Ω, reference measurement element: 150 Ω
	PCC-2 (IEC 60598-1)	150 Ω // 1.5 μF, reference measurement element: 150 Ω
Network constant tolerance		Resistance: ±0.1 %, capacitor 0.15 μF: ±2 %, others: ±1 %
Network accuracy	A, B, C, H	Input voltage vs. output voltage ratio: logical value ± 5 %(according to IEC 60990 Annex L and F)
	E	Input voltage vs. output voltage ratio: logical value ± 5 %
	D, G	Reference measurement element (resistance) ± 1 %
	I	Input 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 (NetworkE Electrical Appliances and Materials Safety Act multiple frequencies)
Measurement circuit network (NetworkB-U2 IEC 60990 Fig. 4 U1 measurement)	Measurement circuit network (NetworkF IEC 61029, UL)
Measurement circuit network (NetworkB-U1 IEC 60990 Fig. 4 U2 measurement)	Measurement circuit network (NetworkG IEC 60745)
Measurement circuit network (NetworkC IEC 60990 Fig. 5 U3 measurement)	Measurement circuit network (NetworkI IEC 60601-1)
Measurement circuit network (NetworkD Electrical Appliances and Materials Safety Act single frequency)	Measurement circuit network (NetworkPCC-1)
Measurement circuit network (NetworkPCC-2 IEC60598-1)

Messabschnitt

Item				TOS9303LC
Measurement range *1		Range1		DC, RMS: 1.00 μA(min.) to 200.00 μA(max), Peak: 1.00 μA(min.) to 282.00 μA(max)
		Range2		DC, RMS: 12.50 μA(min.) to 2000.0 μA(max), Peak: 17.50 μA(min.) to 2830.0 μA(max)
		Range3		DC, RMS: 125.0 μA(min.) to 20.000 mA(max), Peak: 175.0 μA(min.) to 28.300 mA(max)
		Range4		DC, RMS: 1.250 mA(min.) to 100.00 mA(max), Peak: 1.750 mA(min.) to 100.00 mA(max)
		Range switching		Auto or Fix selectable. If a measurement falls outside the measurement range of each range, the measured value blinks as a warning.
			Auto	The range is set automatically according to the measurements.
			Fix	For 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 switching		Can be expanded to a bandwidth that allows measurements from 0.1 Hz, which is required in the measurement of medical instruments and the like.
			Normal	Normal measurement bandwidth: 15 Hz to 1 MHz
			Expand	Expands the measurement range to 0.1 Hz to 1 MHz
Total accuracy *2 (when network A, B, or C is used) *3	Range1	DC		±(5.0 % of reading + 2 μA)
		RMS	0.1 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)
		Peak	0.1 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)
	Range2	DC		±(5.0 % of reading + 20 μA)
		RMS	0.1 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)
		Peak	0.1 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)
	Range3	DC		±(5.0 % of reading + 50 μA)
		RMS	0.1 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)
		Peak	0.1 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)
	Range4	DC		±(5.0 % of reading + 0.5 mA)
		RMS	0.1 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)
		Peak	0.1 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 resistance				1 MΩ ± 1 %
Input capacitance				200 pF or less (internal voltmeter input capacitance: 100 pF or less)
Common mode rejection ratio				10 kHz or less: 60 dB or more, 10 kHz to 1 MHz: 40 dB or more
Offset cancel function				Cancels 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

Item			TOS9303LC
Behavior based on judgment			Judgment 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 FAIL	Judgment method	UPPER FAIL results when a current greater than or equal to the upper limit (Upper) is detected.
		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 (Lower) is detected.
		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.
Upper Setting range	RANGE1		DC, RMS: 0.1 μA(min.) to 200 μA(max), Peak: 0.1 μA(min.) to 282 μA(max)
	RANGE2		DC, RMS: 15.1 μA(min.) to 2.00 mA(max), Peak: 21.3 μA(min.) to 2.83 mA(max)
	RANGE3		DC, RMS: 151 μA(min.) to 20.00 mA(max), Peak: 213 μA(min.) to 28.3 mA(max)
	RANGE4		DC, RMS: 1.51 mA(min.) to 100 mA(max), Peak: 2.13 mA(min.) to 100 mA(max)
Lower Setting range			A value that is -1 digit from the upper setting range.
Judgment accuracy			Conforms to total accuracy(Read “reading” as “upper setting” of total accuracy.)

Timer function

Item		TOS9303LC
Judgment delay (Judge Delay)	Setting range	1 s to 1000 s, OFF
	Accuracy	±(100 ppm of setting + 20 ms)
Test time	Setting range	1 s to 1000 s, OFF
	Accuracy	±(100 ppm of setting + 20 ms)

Other specifications

Item			TOS9303LC
Voltage conversion			Displays 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 range	80.0 V to 300.0 V, OFF
		Resolution	0.1 V
Power supply line polarity selection			Set the polarity of the power supply line to supply to the EUT to positive or negative.
Single fault mode (Condition) selection			Set the EUT single fault mode to normal, neutral line disconnection (Fault Neu), or protective ground wire disconnection (Fault PE).
Ground check			In the touch current test between the enclosure and power supply line, if the EUT enclosure is grounded, Contact-FAIL occurs.
Measurement check			Checks 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 range	80.0 V to 250.0 V
		Resolution	0.01 V
		Accuracy	±(3 % of reading + 1 V)
Supply current measurementAC LINE (EUT)		Measurement range	0.1 A to 15.00 A
		Resolution	0.001 A
		Accuracy	±(5 % of reading + 30 mA)
Power measurement(active power)		Measurement range	10 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 terminals	Measurement range	DC	10.00 V to 300.0 V
		RMS	10.00 V to 300.0 V
		Peak	15.00 V to 430.0 V
	Input impedance		Approx. 40 MΩ
	Accuracy *1		±(3 % of reading + 2 V) (measurement range fixed to AUTO)
	SELV detection		Set a voltage for detecting SELV. When the value is exceeded, the DANGER LED lights.
		Setting range	10.0 V to 99.9 V, OFF
		Resolution	0.1V
Measurement terminal	Rated voltage	Between the A and B terminals	250 V
		Between the terminals and chassis	250 V
	Rated current		100 mA
	Measurement category		CAT-II
	Valid terminal display		Terminals valid for measurement are indicated on the display.
	110% terminal		Terminal for supplying 110% voltage of the AC line.
Power supply for the EUT	Nominal voltage range		100 V to 240 V, 50 Hz/60 Hz
	Input voltage range (allowable voltage range)		85 Vac to 250 Vac
	Rated output capacity		1500 VA
	Maximum operating current		15 A (Overcurrent protection is activated at approximately 15.7 A.)
	Inrush current		70 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.

Other Functions (Common)

Item		TOS9300	TOS9301	TOS9301PD	TOS9302	TOS9303	TOS9303LC
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)

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)
		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)
		Humidity	20 %rh to 80 %rh (no condensation)
	Storage range	Temperature	-20 °C to 70 °C (-4 °F to 158 °F)
		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
		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.