Tonghui Electronics TH9110 Manuale utente

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TH9110/TH9110A

AC/DC Withstanding Voltage & Resistance Tester

[email protected]

Operation Manual

Tonghui Electronic Co.,Ltd.

www.tonghui.com.cn

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Content

Chapter 1 Overview....................................................................................................................................4

1.1 Introduction .........................................................................................................................................................4

1.2 Conditions of Use................................................................................................................................................5

1.2.1 Power............................................................................................................................................................................5

1.2.2 Ambient Temperature and Humidity......................................................................................................................................5

1.2.3 Preheating..........................................................................................................................................................................5

1.2.4 Precautions ........................................................................................................................................................................5

1.3 Volume and Weight.............................................................................................................................................6

1.4 Safety Requirements............................................................................................................................................6

1.4.1 Insulation Resistance...........................................................................................................................................................6

1.4.2 Insulation Strength..............................................................................................................................................................6

1.4.3 Leakage Current .................................................................................................................................................................6

1.5 Electromagnetic Compatibility............................................................................................................................7

Chapter 2 Precautions on Handling..........................................................................................................8

2.1 Operation Standards......................................................................................................................................8

2.2 Handling Meansures ...................................................................................................................................10

Chapter 3 Panel Description....................................................................................................................12

3.1 Front Panel ........................................................................................................................................................12

3.2 Rear Panel..........................................................................................................................................................13

Chapter 4 Basic operation........................................................................................................................15

4.1 Interface structure overview..............................................................................................................................15

4.2 SYSTEM Setup.................................................................................................................................................16

4.2.1 System Test Parameter Settings...........................................................................................................................................16

4.2.2 System Environment Parameters Setting..............................................................................................................................21

4.2.3 System Communication Setup ............................................................................................................................................23

4.3 Meas SETUP.....................................................................................................................................................23

4.3.1 AC Withstanding Voltage Test Mode ...................................................................................................................................25

4.3.2 DC Withstanding Voltage Test Mode ...................................................................................................................................26

4.3.3 Insulation Resistance Test Mode .........................................................................................................................................28

4.3.4 Pause Mode......................................................................................................................................................................29

4.3.5 OSC Detection Mode Setup................................................................................................................................................30

4.4 TEST Setup .......................................................................................................................................................31

4.4.1OFFSET...........................................................................................................................................................................33

4.4.2 List Display and Step Display.............................................................................................................................................33

4.5 Test Methods.....................................................................................................................................................34

4.5.1 Offset of the Test Cable / Fixture.........................................................................................................................................34

4.5.2 Sampling Operation of Standard Capacitor...........................................................................................................................35

4.5.3 Method of Connecting the DUT..........................................................................................................................................35

4.5.4 Test Procedures.................................................................................................................................................................35

4.6 Voltage Breakdown Test ...................................................................................................................................37

4.6.1 Brief description...............................................................................................................................................................37

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4.6.2 Operation instruction...................................................................................................................................................37

4.7 File Storage........................................................................................................................................................39

4.8 HANDLER........................................................................................................................................................40

4.8.1 Brief Introduction .............................................................................................................................................................40

4.8.2 External Control Line Legend.............................................................................................................................................41

Chapter 5 Interface and Communication...............................................................................................45

5.1 Remote Control Interface ..................................................................................................................................45

5.1.1 RS232C Interface Instruction..............................................................................................................................................45

5.1.2 GPIB Interface Instruction .................................................................................................................................................51

5.2 Serial Port Commands Instruction.....................................................................................................................54

5.2.1 SCPI Commands...............................................................................................................................................................54

5.2.2 DISPlay Subsystem Commands..........................................................................................................................................55

5.2.3 FUNCtion Subsystem Commands.......................................................................................................................................55

5.2.4 SYSTem Subsystem Commands .........................................................................................................................................72

5.2.5 MMEM Subsystem Commands ..........................................................................................................................................78

5.2.6 USB Subsystem Commands...............................................................................................................................................79

5.2.7 FETCH Subsystem Commands...........................................................................................................................................80

5.2.8 Other Commands..............................................................................................................................................................81

Chapter 6 Technical Parameter...............................................................................................................82

Chapter 7 Warranty.................................................................................................................................84

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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

TH9110/TH9110A 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 TH9110 only)

When TH9110 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), 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, please determine whether the DUT is reliably connected, in

order to reduce the occurrence of 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

to external equipment (such as a computer) or automatic test system conveniently.

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RS-232C interface: RS-232C provides convenient serial communication with the peripheral, the

peripheral can conduct the set up of various functions and parameters of the tester through this

interface.

USB DEVICE interface and LAN interface

HANDLER interface: this interface enable the connection of the tester and the automatic

equipment, control the tester operation and feedback the test results.

GPIB interface (option): this general purpose interface provides the convenience for the tester to

be connected with an automatic test system including a computer and other measuring

instruments

This tester also provides convenient and practical file function, which can save the measuring

parameters set up by the user. It can save 100 files, at most 50 steps per file.

1.2 Conditions of Use

1.2.1 Power

Power voltage: 100V～240VAC

Power frequency: 47Hz～63Hz

Rated power: 800W

1.2.2 Ambient Temperature and Humidity

Normal Operating Temperature: 0℃～40℃, Humidity: 20%～90%RH

Reference Operating Temperature: 20℃±8 ℃, Humidity: < 80%RH

Storage Ambient Temperature:-10℃～55℃, Humidity:< 90%RH

1.2.3 Preheating

Warm up time after power on: ≥ 20 minutes

1.2.4 Precautions

1) Please do not locate and use the tester in the poor environment where it is exposed to dust,

vibration, and direct sunlight, corrosive or with flammable gas, etc.

2) When the tester won’t be used for a long time, please have it packed in its original carton or

similar carton and store in a dry and ventilated room with suitable temperature, with no

harmful impurities in the air which may corrode the tester, also should avoid direct sunlight.

3) Before turn on the power, make sure the voltage and fuse are identical to the ones on the

manual, including shape, grade, characteristics etc. If different type of fuse is used or in short

circuit, then the tester may be damaged.

Input Voltage Range

Frequency Range

Fuse (slow melting)

Rated Power

110VAC

(100V～120VAC)

47-63Hz

10A

800VA

220V

(200V～240VAC)

800VA

4) This tester is carefully designed to reduce the clutter interference due to the AC power input,

even though should use it under the low noise environment, if this is unavoidable, please

install a power filter.

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5) Do not use the tester in locations affected by strong magnetic or electric fields. Operation in a

location subject to magnetic or electric fields may cause the tester to malfunction, resulting in

electrical shock or fire.

6) Do not use the tester in locations near a sensitive measuring instrument or receiver. Operation

in a location subject, may cause such equipment may be affected by noise generated by the

tester. At a test voltage exceeding 3 kV, corona discharge may be generated to produce

substantial amounts of RF broadband emissions between grips on the test lead wire. To

minimize this effect, secure a sufficient distance between alligator clips. In addition, keep the

alligator clips and test lead wire away from the surfaces of conductors (particularly sharp metal

ends).

7) There is a cooling fan at the rear of the tester, with right and left cooling vent, preventing

internal temperature rise affecting accuracy, please make sure the tester is well ventilated.

8) Please do not turn on/off the power repeatedly. After turning OFF the power switch, be sure to

allow several seconds or more before turning it ON again. Do not turn on/off power switch

repeatedly, if you do this, the protectors of the tester may not be able to render their protective

functions properly. Do not turn OFF the power switch when the tester is delivering its test

voltage, you may do this only in case of emergency.

9) During the normal operation, please use INTERLOCK to ensure the safety. When using this

tester in a cramped working space, make a box-like structure for the DUT; when testing a

complicated large-scale DUT: provide a cover or other means for the DUT to prevent electric

shock, cutting off the output when the cover is opened. It is also recommended that an

enclosure be provided around the operating area and that output be cut off every time the door

is opened, to keep the workplace safe and secure.

1.3 Volume and Weight

Dimension: 430mm (W)*132mm (H) *500mm (D)

Weight: 21kg

1.4 Safety Requirements

This tester is class I safety instrument.

1.4.1 Insulation Resistance

Under reference working condition, insulation resistance between power terminal and the shell is not

less than 50M;

Under wet and hot transport condition, insulation resistance between power terminal and the shell is

not less than 2M;

1.4.2 Insulation Strength

Under the reference working condition, the withstanding rated voltage between the power supply

terminal and the shell is 1.5kV, AC voltage with frequency of 50Hz for 1 minute, no breakdown and

arcing.

1.4.3 Leakage Current

Leakage current is not greater than 3.5mA.

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1.5 Electromagnetic Compatibility

Power Transient Sensitivity, refer to requirements of GB6833.4

Conductance Sensitivity, refer to requirements of GB6833.6

Radiative Interference, refer to requirements of GB6833.10

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Chapter 2 Precautions on Handling

This chapter describes the precautions to be followed in the handling of this tester. When using the

tester, take utmost care to ensure safety.

！

WARNING: The tester derives a 5 KVAC or 6KVDC test high voltage, incorrect or wrong

operation can cause accidents which will result in human injury or death. When operating the tester,

be extremely careful and observe the cautions, warnings, and other instructions given in this chapter,

keep them in mind to avoid accidents.

2.1Operation Standards

1) Wearing Insulation Gloves

When handling the tester, be sure to wear insulation gloves in order to protect yourself against

high voltages, even though, please do not touch the live conductor by hand when high voltage test

is conducting.

2) Grounding

There is a protective grounding terminal on the rear panel of the tester chassis,

please use a dedicated tool to connect it to an electrical ground (safety ground,

earth). If there is no good grounding, when the circuit of the power is shorted to

the ground or any device’s power line is shorted to the ground, the tester chassis is

charged to an excessively high voltage, resulting in extreme danger, anyone who

touches such tester chassis, will result in electric shock accident, therefore, please

make sure that the protective grounding terminal is connected to the safety

ground.

3) Test Line Connection

Press【STOP】first, confirm that DANGER lamp is not lit, then connect the test line. When

connecting the test lead wire to a DUT, please connect the DUT with the test lead wire of HV2

or RTN/LOW first. It is very dangerous if the test line connection of HV2 or RTN/Low is

incomplete or dropped, because the entire DUT will be charged with high voltage.

After high voltage plug of the high voltage test lead is inserted into HV1 and HV2, it must be

rotated 90 degrees clockwise to prevent the test lead wire from falling off.

Before testing, it is a must to check whether the test lead wire of HV1 and HV2 or RTN/LOW are

connected, loose or fall off.

4) Stop (Pause) Test

To change the test conditions, please press the STOP once first, this will take the tester out of

the test preparation state and ensure that the DANGER lamp is off. If need to take a break or

leave the test location, please switch off the power, to prevent the accidental contact with the

start switch and cause a safety hazard.

5) Remote Control

Be very careful when operating the tester in remote control mode, because the start and stop of

Safe ground

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high voltage is remote controlled, the operator can not know the actual working state of the tester

through the interface. Please pay special attention to the reliability of remote control

connection:

「STOP」key, must be connected reliably,「STOP」key must be pressed before changing the

DUT.

When working in a crowded work environment, the remote control switch must have a

interlock 「INTLOCK 」and the high voltage indicator. Disconnect the interlocker

「INTLOCK」before changing the DUT.

When testing voltage output, the operator or any other person is prohibited from touching the

DUT, test lines, probes, output terminals and areas around them.

6) Test Completion Confirmation

If you have to touch the high pressure area such as the DUT, test leads, probe or output

terminal because of reconnection or other test-related conditions, please confirm:

The power switch is turned off or the working status of the tester is not in the test state,

and DANGER lamp has gone out.

The DUT may be charged with high voltage even after the test completion, please pay

special attention that whether or not the DUT is fully discharged.

7) High Voltage Testing Discharge

In high voltage testing, test lead wires, probes and DUT are all charged with high voltage. The

tester is equipped with a discharge circuit, but some time it still requires to discharge after the

output is cut off. There is a danger of electric shock during discharge, do not touch anything that

could cause an electric shock. As soon as the output is cut off, the tester’s discharge circuit

starts forced discharging. Do not disconnect the DUT during a test or prior to the completion of

discharging.

Discharge time:

The time at which the voltage is completely discharged is determined by the test voltage used

and the characteristics of the DUT.

During the test process, discharge of the DUT is conducted by the transformer secondary

winding (approximately resistance of 2k) and approximately 0.1S is required for 10uF capacitor

with high voltage of 6000V to discharge to 30V. The fixed discharge time of the tester is 0.2s,

which ensures complete discharge of the tester. The internal filter capacitor of the tester is

discharged through the discharge circuit, which ensures complete discharge of the tester within

0.2S.

Assume that a high voltage is applied to a DUT, equivalently, a high voltage is applied to a

circuit with a 0.01uF capacitor in parallel with a 100MΩ resistor, if the DUT is disconnected

during a test or prior to the completion of discharging, approximately 5S is required for DUT

with high voltage of 5000V to be discharged to 30V, approximately 3.5S is required for DUT

with high voltage of 1000V.

Computational formula of discharge time: t = -In (30 / U) ×R×C

t: discharge time

30: discharge residue safty voltage 30V

U: test set voltage

R: discharge impedance of the DUT, approx. 2KΩ

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C: capacitance of the DUT

If the time constant of the DUT is known, then the time required to discharge to 30V can be

calculated by the above formula after the output is cut off.

8) Turn ON or OFF the Power Switch

Once the power switch is turned off, be sure to allow several seconds or more before turning it ON

again, never turn on and off the power switch repeatedly, so as not to cause erroneous actions.

Especially in the state of high-voltage output, it is very dangerous to continuously turn on and off

the switch. When turn or off the power switch, no items should be connected to the high

voltage output terminals to avoid danger due to abnormal high voltage output.

9) Do Not Touch the High VoltageArea in Test Status

While the tester is in test state, there is hazardous high voltage electricity on the high voltage

output, high voltage test line, high voltage probe, DUT and their exposed conductor’s

surroundings, please do not approach or touch these areas.

Warning: Do not touch the alligator clip on the test line. When the instrument is in the test

state, the rubber skin on the alligator clip is not insulated enough, it is very

dangerous to touch it!

10) Do not short the output terminal to the earth ground

Do not short circuit the high voltage output cable, grounding wire and transmission line or the

grounding wire of other connectors or AC power to avoid the entire tester’s chassis being charged

to a very dangerous voltage. To short the high voltage output terminal HV1 to HV2 or RTN/LOW,

the entire housing of the tester must be reliably connected to the ground.

11) Do not connect external voltage to the test terminal

Do not apply a voltage from any external device to the output terminals of the tester. The tester

does not have an external discharge function in the non-discharge state. The tester may be

damaged if its output terminals are subject to an external voltage.

2.2Handling Meansures

1) Actions When in Emergency

In case of an emergency (such as electric shock hazard or burning of DUT) while the tester’s high

voltage output is not cut off, take the following actions. You may do either (a) or (b) first. But be sure

to do both:

a. Turn OFF the power switch of the tester.

b. Disconnect the AC power cord of the tester from the AC line receptacle.

2) Handling for Dangerous State of Faulty Tester

Under the following circumstances, all problems occurred are regarded as very dangerous, even if

【STOP】key is pressed, its output terminal may still delivering high voltage, therefore, you must be

extremely careful.

When【STOP】is pressed, DANGER indicator light is still on.

The voltmeter has no voltage reading, but DANGER indicator light is still on.

When above situations occur, please immediately turn OFF the power switch and disconnect the AC

power cable from the AC line receptacle. Immediately keep far away from the instrument and confirm

no risk of the test circuit by the technical personnel; or keep the instrument still for more than one

hour and confirm no output voltage in the test terminal. Remove the relevant connecting lines and

send the instrument back to us for maintenance.

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