14 TOS5300
Product Overview
The TOS5300 Series Withstanding Voltage and Insulation Resistance Testers perform withstanding
voltage and insulation resistance tests, which are two of the four tests that are required for ensuring
the safety of electrical products.
1
This product can perform withstanding voltage and insulation resistance tests on electrical
products and electrical components in accordance with the requirements of safety and electrical
standards and ordinances such as IEC, EN, UL, VDE, and JIS.
It is suited to (1) research and development installations, (2) test facilities for quality assurance
testing and standard certification, and (3) manufacturing lines.
The TOS5300 can perform AC withstanding voltage tests (ACW). The TOS5301 can perform AC
withstanding voltage tests and DC withstanding voltage tests (ACW and DCW). The TOS5302 can
perform AC withstanding voltage tests (ACW) and insulation resistance tests (IR).
These withstanding voltage and insulation resistance testers are easy to use, safe, and reliable.
Features
● Newly developed constant-voltage output for stable testing
The TOS5300 Series is not affected by AC line interference. Because the output voltage is
maintained at a fixed value even if the AC line voltage or frequency changes, stable tests can be
performed even in locations where the power supply is unstable.
The AC inlet is designed for worldwide use. The TOS5300 Series can be used without
modification provided the nominal power supply voltage is within the range of 100 VAC to 240
VAC (90 VAC to 250 VAC)
and the frequency is within the range of 47 Hz to 63 Hz.
● Rise time control feature that gradually increases the test voltage (only for withstanding
voltage tests)
Instead of immediately applying the specified test voltage to the DUT after the test begins, this
makes it possible to perform tests in which the voltage is raised gradually to the test voltage. As
required by withstanding voltage tests defined by standards such as IEC and UL, this makes it
possible to perform tests in which no more than half of the test voltage is applied at the start of
the test, and the test voltage is gradually reached over the specified time.
● Fall time control feature that gradually decreases the test voltage
The test voltage can be gradually decreased after a PASS judgment occurs during an AC
withstanding voltage test.
● Auto test (AUTO TEST) for performing consecutive tests
A combination of an AC withstanding voltage test and an insulation resistance test (IR) can be
performed in sequence.
● Calibration Protection feature that provides a notification when TOS5300 Series
calibration is required
The product displays a message when the preset calibration period elapses. It is also possible to
switch the product into protection mode and apply limits to its use when this period elapses.
1 The four tests are the withstanding-voltage, insulation-resistance, earth-continuity, and leakage-current
tests.
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