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TOS5300_Insulation resistance test section

Item/ModelTOS5302
Output sectionOutput voltage 25 V, 50 V, 100 V, 125 V, 250 V, 500 V, 1000 VDC (negative)
Accuracy-0 %, +5 %
Max. rated load1 W (-1000 V DC / 1 mA)
Max. rated current1 mA
Ripple1000 V when no load is connected2 Vp-p or less
Max. rated load10 Vp-p or less
Voltage regulation1 % or less (when changing from maximum rated load to no load)
Short-circuit current12 mA or less
Discharge featureForced discharge after test completion (discharge resistance: approx. 25 kΩ)
Limit voltageThe test voltage upper limit can be set : 25 V, 50 V, 100 V, 125 V, 250 V, 500 V, 1000 V
Output voltage monitor featureIf output voltage exceeds “10 % of set + 10 V” or is lower than “-(10 % of set + 10 V),” output is turned off, and protective features are activated.
VoltmeterAnalogScale6 kV AC/DC f.s
Accuracy±5 % f.s
IndicationMean-value response/rms scale
DigitalMeasurement range0 V to -1200 V
DisplayMeasured voltage
V < 100 V:□□ V
100 V ≦ V < 1000 V:□□□ V
1000 V ≦ V:□□□□ V
Accuracy± (1 % of rdng + 1 V)
Resistance meterMeasurement range / measurement accuracy *1*225 V0.03 MΩ ≤ R ≤ 25 MΩ / ±(2 % of rdng + 2 digits)
25 MΩ < R ≦ 125 MΩ / ± 5 % of rdng
125 MΩ < R ≦ 250 MΩ / ± 10 % of rdng
50 V0.05 MΩ ≤ R ≤ 50 MΩ / ±(2 % of rdng + 2 digits)
50 MΩ < R ≦ 250 MΩ / ± 5 % of rdng
250 MΩ < R ≦ 500 MΩ / ± 10 % of rdng
100 V0.100 MΩ ≤ R ≤ 100 MΩ / ±2 % of rdng
100 MΩ < R ≦ 500 MΩ / ± 5 % of rdng
500 MΩ < R ≦ 1 GΩ / ± 10 % of rdng
125 V0.125 MΩ ≤ R ≤ 125 MΩ / ±2 % of rdng
125 MΩ < R ≦ 625 MΩ / ± 5 % of rdng
625 MΩ < R ≦ 1.25 GΩ / ± 10 % of rdng
250 V0.250 MΩ ≤ R ≤ 250 MΩ / ±2 % of rdng
250 MΩ < R ≦ 1.25 GΩ / ± 5 % of rdng
1.25 GΩ < R ≦ 2.5 GΩ / ± 10 % of rdng
500 V0.50 MΩ ≤ R ≤ 500 MΩ / ±2 % of rdng
500 MΩ < R ≦ 2.5 GΩ / ± 5 % of rdng
2.5 GΩ < R ≦ 5 GΩ / ± 10 % of rdng
1000 V1 MΩ ≤ R < 1 GΩ / ±2 % of rdng
1 GΩ ≦ R ≦ 5 GΩ / ± 5 % of rdng
Display*225 kΩ ≦ R < 1.00 MΩ:□□□ kΩ
1.00 MΩ ≦ R < 10.0 MΩ:□ . □□ MΩ
10.0 MΩ ≦ R < 100 MΩ:□□ . □ MΩ
100.0 MΩ ≦ R < 1.00 GΩ:□□□ MΩ
1.00 GΩ ≦ R ≦ 9.99 GΩ:□ . □□ GΩ
Hold featureAfter a test is finished, the measured resistance is retained until the PASS judgment is cleared.
Current detection response speedCan be switched between three levels: Fast, Mid, Slow
Judgment featureJudgment method and judgment operation
JudgmentJudgment methodDisplayBuzzerSIGNAL I/O
UPPER FAILIf a resistance that is greater than or equal to the upper limit is detected, the output is turned off, and an UPPER FAIL judgment occurs. This judgment is not performed during voltage rise time (Rise Time).FAIL LED lights
OVER is displayed on the screen
ONGenerates a U-FAIL signal
LOWER FAILIf a resistance that is less than or equal to the lower limit is detected or if a problem occurs during the voltage rise time (Rise Time), the output is turned off, and a LOWER FAIL judgment occurs.FAIL LED lights
UNDER is displayed on the screen
ONGenerates a U-FAIL signal
PASSIf the specified time elapses without any problems, the output is turned off, and a PASS judgment occurs.PASS LED lightsONGenerates a PASS signal
  • If PASS HOLD is enabled, the PASS signal is generated continuously until the TOS5300 Series receives a STOP signal.
  • The UPPER FAIL and LOWER FAIL signals are generated continuously until the TOS5300 Series receives a STOP signal.
  • The FAIL and PASS buzzer volume levels can be changed.
  • For PASS judgments, the length of time that the buzzer sounds for is fixed to 0.2 seconds. Even if PASS HOLD is enabled, the buzzer turns off after 0.2 seconds.
Upper limit setting range0.03 MΩ to 5.00 GΩ
Lower limit setting range0.03 MΩ to 5.00 GΩ
Judgment accuracy
the same for UPPER and LOWER
Measurement accuracy + 2 digits
Humidity: 20 %rh to 70 %rh (no condensation). No interference caused by wobbly test leads or other problems.
For judgments of 200 nA or less, a test time of at least 1.0 seconds is necessary. If the current detection response speed is set to Mid, a test time of at least 0.3 seconds is necessary. If the current detection response speed is set to Slow, a test time of at least 0.5 seconds is necessary.
TimeVoltage rise time10 ms (TYP)
Test Time 0.1 s to 999 s, can be turned off (TIMER OFF)
Resolution0.1 s to 99.9 s: 0.1 s0 / 100 s to 999 s: 1 s
Accuracy± (100 ppm + 20 ms)

*1 Humidity: 20 %rh to 70 %rh (no condensation). No bends in the test leads. *2 R = measured insulation resistance


Related specifications : TOS5300 series

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