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4
Chapter 1 Overview
Thank you for purchasing and using our device. Before using this device, please refer to the last
chapter of “Warranty” in this manual to check and confirm, if there is any differences, please contact
with us in order to protect your rights and interests.
1.1 Introduction
ST9110/ST9110A AC/DC withstanding voltage & resistance tester is designed for conducting
automatic test of withstand voltage, insulation resistance and open and short circuit check for motor
and electronic equipment. For withstand voltage test, with output power AC:500VA (5kV, 100mA)
and DC:150VA (6kv, 25mA), it can be used to conduct the testing of withstanding voltage for the
high power motor and electronic equipment, as well to do the same test for the components. For
insulation resistance test, the displayable range is 0.1MΩ~50GΩ, test voltage can be set arbitrarily
from 50V to 5000V. For open and short circuit check test, judge whether the DUT is reliably
connected before conducting the high voltage test and then conduct the high voltage test. For display,
measurement mode, time, voltage, current, resistance value, test procedure can be displayed on the
screen. In addition, there is list display mode to display multiple steps of setings and sequence test
results. This tester is also equipped with RS-232C, USB, HANDLER, and optional GPIB, which
enable the device to work with various automatic testing systems that require high security and
reliability.
The tester provides multiple test functions, typical ones:
High Voltage Floating Output design (for ST9110 only)
When ST9110 high voltage output is set to the floating state, if the output high voltage is 5KV
AC or 6KVDC at high voltage output terminal HV1, HV2, the leakage current of HV1 or HV2
terminal to earth (Earth) is no more than 3mA.
AC/DC Withstanding Voltage Test
The output power AC is 500VA (5kV, 100mA), when AC voltage is smaller than 4kv, maximum
current can reach 120mA; DC is 150VA (6kV, 25mA), when DC voltage is smaller than 1.5kV,
maximum current can reach 20mA.
Insulation Resistance Test
Test range is 0.1MΩ~50GΩ, test voltage is 50V~5000V, the value can be set up arbitrarily by
using 1V as step.
OSC Check
Before conducting high voltage test, determine whether the DUT is reliably connected so the
measurement is not affected by poor contact.
ARC Detection Function
To judge the DUT insulation performance is poor or not by using high frequency signal
detection.
Breakdown Voltage Test Function
According to the set up, gradually conduct the test on the DUT, to find out its high voltage
tolerance for analysis and improvement.
List Display Function
: simultaneous display settings of multiple steps and test results of
sequential execution
Various communication interfaces are available which enable the device to output the test results
