Instek GPT-9804 Data Sheet/Brochure

A Solid Foundation for Reliable, Safe and
Practical Safety Compliance Testing.

The GPT-9900 series is built upon a platform of AC 500VA, and the GPT-9800 series is built upon a platform of AC 200VA maximum
power output. Each series with 4 models, The GPT-9904 and GPT-9804 are a 4-in-1 model capable of performing AC withstanding,
DC withstanding, insulation resistance and ground bond tests. The GPT-9903A and GPT-9803 are a 3-in-1 model capable of performing
AC withstanding, DC withstanding and insulation resistance tests. The GPT-9902A and GPT-9802 are capable of performing both AC and
DC withstanding tests, whereas the GPT-9901A and GPT-9801 are able to perform AC withstanding test. The high-efficiency PWM amplifier
is the core of both series platform design to impede the influence from the voltage fluctuation of input AC source. Each series supports
the major test items among all the needed for the compliance of the safety standards such as IEC, EN, UL, CSA, GB, JIS and other safety
regulations.

Following a tidy and easy-to-use design concept, the both series are equipped with a simple & clear panel layout, a high resolution dot
matrix LCD display, and color LED indicators, allowing operators to interpret measurement results easily and quickly. All major test
functions, including AC withstanding (AC 5kV), DC withstanding (DC 6kV), insulation resistance (DC 50V ~ 1000V) and ground bond
(AC 32A max.) tests, are performed under a high-stability voltage or current output with high-resolution measurement results. Further
more, the test duration, ramp up time and upper/lower limits of the tripping current/resistance are fully-adjustable to accommodate a
wide variety of safety tests with accurate measurement results.

The unique “Sweep” function of the GPT-9900 series is able to display the test results point by point all through the testing period to
form a trace graph. This graphic display performs the characteristic verification of a DUT through observing the parameter response to
the changes of the applied voltage or current or testing time.

Other significant functions and features are also incorporated with both series such as the output voltage is automatically cut off (within
150 s) upon the detection of an abnormal output voltage or a trip of current limits during test to protect the operator from hazardousμ
injury and automatically discharges a DUT after test to eliminate excessive voltage on a DUT, the open-circuit detection to ensure proper
connections of apparatus for ground bond test, 100 sets of memory to save and recall the panel settings for individual or sequential tests,
a remote output on-off terminal on the front panel and a signal I/O port in the rear panel provided as the means for remote start/stop
control of the safety tester, and RS-232C, USB and GPIB (optional) interfaces available for PC remote control and test result logging.

UNIQUE SWEEP FUNCTION FOR DUT CHARACTERISTICS ANALYSIS

A.

The GPT-9900 Series has a unique sweep function to show the trace graph

of test results of the device under test. The test readings are recorded

point by point according to the setting of the applied test voltage or

current and the testing duration (ramp-up time + timer) to form a trace

of parameter response. On this sweep graph, users can use a moveable

cursor to locate the point of specific time or specific amount of applied

source (voltage or current) within test period to know the measurement

result of this point. It helps users to verify the changes of measured

parameter (current or resistance) all thorough the test process, instead

of just obtaining one final value at the end.

Unlike the conventional safety tester design that uses variable voltage
transformer and class AB amplifier to provide testing voltage, the GPT­9900 Series, carrying a high-efficiency PWM amplifier design, generates
output source up to 98% efficiency. This greatly reduces the amount of
power loss to heat and therefore lowers the temperature within the
cabinet of the GPT-9900 Series. The suppression of temperature rise
during heavy-duty operations of the tester significantly increases its
reliability and service lifetime. In addition, as PWM amplifier is
comparatively more resistant to the fluctuations of input power voltage,
a stable high-voltage output with less than 1% regulation is provided by
the GPT-9900 Series to perform precision tests of the DUT.

HIGH EFFICIENCY AND HIGH STABILITY OUTPUT

B.

Efficiency

PWM Amplifier

Liner Amplifier

Output Power

PWM Amplifier Efficiency

C.

HIGH ACCURACY AND HIGH RESOLUTION TESTING PERFORMANCE

High Adjustment & Measurement Resolution

In order to provide high accuracy testing for production test, regulation

compliance, and characteristic verification, the withstanding test voltage

(AC 5kV/DC 6kV) of the GPT-9900 Series can be adjusted in 2V steps,

while the current measurement can be done with 1 A resolution andμ

±(1.5% + 30 A) accuracy to enable small leakage current measurementsμ

of the products or the components. In addition, the test voltage of

insulation resistance of the GPT-9900 Series can be adjusted in 50V steps

within the DC output range from 50V to 1kV, carrying a measurement

accuracy of ±(10% of reading +1 count) at full scale (2000M /9.999G )

and ±(15% of reading +1 count) at full scale (50.00G ). This providesΩ

the flexibility for performing Insulation Resistance (IR) measurements

under variable levels of applied voltage. As the majority of safety

D.

SAFETY GUARDING THROUGHOUT THE TESTING PERIOD

ΩΩ

regulations need an AC source for ground bond testing, the GPT-9900

Series provides 6Vac voltage (open circuit) and 3A~32Aac current for

ground bond test. Furthermore, open circuit detection (via SOURCE H,

SENSE H and SOURCE L terminals) for ground bond test is also

provided to check whether the test apparatus is properly connected

before the start of a test. This is to ensure the ground bond test is done

accurately without any unnoticeable misconnection of the test leads and

the test terminals.

With these capabilities, the user is able to perform various safety tests

and verifications with high flexibility, accuracy and confidence.

Test V

Start V

Initial Time

(100ms)

RAMP

TEST TIME

Discharge Period

Time

Zero-Crossing Operation

Once the GPT-9900 Series is turned on, the protection functions to
protect operator and DUT are always in operation throughout the testing
period. When the power is turned on, the GPT-9900 Series immediately
goes through the self-check procedures to ensure that all test functions
are performed under normal conditions, as the first protection function
being applied.

The second protection function is activated once the “Start” (output)
button is pressed. At the first moment of start up, the GPT-9900 will
send a detection voltage (~50V) during the initialization period (100ms)
to check whether the DUT has any short circuit due to poor insulation
before the high voltage is applied. This is to prevent high voltage or
current from returning to the DUT during the test time. To protect DUT
from insulation breakdown caused by the rapid increase of test voltage

Output Voltage Variation in One Test Cycle

at power-on and avoid flashover or arcing phenomena that could affect
the test results, the GPT-9900 Series has a Zero Crossing Turn-On feature,
which ensures the output always starts from the zero crossing of a sine

wave. Moreover, the adjustable voltage ramp-up time (0.1s ~ 999.9s)
allows the test voltage to slowly rise to the set test voltage to reduce the
risk of damaging DUT during mandatory production testing.

Furthermore, after the voltage has ramped to the set test voltage, the
GPT-9900 will continue monitoring the voltage and cut off power output
once any irregularity is detected. This provides both the safety tester and
the operator with a high level protection, which allows the test to be
done in a safe and accurate manner.

E.

MULTIPLE PROTECTION MECHANISMS

Safety Interlock Fast Cutoff in 150µs

Discharge Period

The GPT-9900 Series also offers multiple protection designs to ensure
operator safety in operating the safety tester. The interlock function
provides the hardware key protection for voltage output. When the
interlock function is activated, the testing voltage will present at the
output ONLY when the dedicated interlock key is attached to the Signal
I/O port on the rear side. When the test is not intended to executed,
removing the interlock key can inhibit the voltage output to prevent the
hazard of high voltage output. Except connecting with the key, two
inputs of the Signal I/O port can be connected alone to a senor switch

F.

FRIENDLY USER INTERFACE

High Intensity Indicators Large LCD and Function Keys

The 240 x 64 LCD displays not only the setting parameters but also the
test conditions, measurement values and DUT inspection results (PASS
or FAIL) in a legible pattern. The LED indicators in different colors alert
the operator to the status of the safety tester to avoid any possible risk.

installed in safety test system. If there is any unexpected object is
detected to intrude into the system, the output is disabled and thus
prevents the operator from exposure to hazardous voltages/currents.
In addition, the GPT-9900 Series can quickly cut off the high voltage
output within 150µs when the test has completed, the high/low limits
have been reached or the emergent stop caused by an abnormal
situation. Lastly, when a test has stopped, the unit also automatically
discharges the voltage across the DUT to reduce the risk of injury to
operator.

For example, the status indicator sitting above the high voltage output
terminal will automatically blink when a high voltage presents at output.
In addition, the function keys arranged below the LCD display provide
convenient operation that test setup can be easily done by fewer key punches.

CONVENIENT MANUAL AND AUTOMATED TEST

G.

Variety of Control Methods

In order to comply with all safety regulations, the GPT-9900 series also
offers a large number of memory locations (100 sets in total) to store a
variety of test conditions. When a test condition is saved to one of the
100 fixed memory locations, a unique test file name (up to 12 characters)
can also be assigned to its memory location. For example, the test file
name “IEC61010AH” (IEC61010 AC Withstanding test) can saved and
recalled for future use. Any test conditions that have been previously
stored can be used for a single test or combined together for automatic
testing- eliminating the need to perform a series of tests manually.

AUTO MODE

( total 100 sets )

AUTO=001-***
AUTO=002-***
AUTO=003-***

AUTO=098-***
AUTO=099-***
AUTO=100-***

MANU MODE

( total 100 sets )

MANU=***-001
MANU=***-002
MANU=***-003

MANU=***-098
MANU=***-099
MANU=***-100

AUTO Testing include Multiple MANU Processing

In addition to using the START/STOP buttons on the front panel to
control the safety tester, the GPT-9900 Series also provides a remote
terminal for connection to an external remote controller and a signal I/O
port on the rear panel for connection to a PLC interface for actuator
control. Furthermore with RS-232C and USB as standard (GPIB optional)
for all the models in the GPT-9900 Series, retrieving test data and results
is convenient via a PC connection.

PANEL INTRODUCTION

1. 240 x 64 Ice blue matrix LCD display,
supporting a grater view of setting
parameters and testing results

2. High intensity LED indicators to show
the status of safety tester

3. Withstanding high voltage output for
AC 5kV max. and DC 6kV max. in 2V
per step; insulation resistance test
from 50V~1000V in 50V per step

4. Quick selecting function keys,
corresponding to the functions or
parameters displayed on the screen

Signal

Remote

Terminal

1

4

IO/

2

3

5. Remote terminal provides “start” and
“stop” control by an external controller

6. High current output up to 30A ac for
4 wires Ground Bond testing

7. The Signal I/O port provides remote
control “start” and “stop” functions
and monitor the test status of the
tester

8. USB and RS-232C communication
ports facilitate the easy & convenient
communication

9. GPIB communication is supported as
optional

10. Rear Output Terminal

(only GPT-9900 Series)

5 6

7 8

9

10

GPT-9904

GPT-9903A
GPT-9902A
GPT-9901A

MODEL

AC 500VA AC/DC Withstanding Voltage/Insulation Resistance/Ground Bond Tester

AC 500VA AC/DC Withstanding Voltage/Insulation Resistance Tester

AC 500VA AC/DC Withstanding Voltage Tester

AC 500VA AC Withstanding Voltage Tester

FUNCTION

GPT-9904
GPT-9903A
GPT-9902A
GPT-9901A

GPT-9804
GPT-9803
GPT-9802
GPT-9801

Short Current >200mA

*

SELECTION GUIDE

AC DC

*
*
*
*

IR

GB

GPT-9804
GPT-9803
GPT-9802
GPT-9801

SWEEP

AC 200VA AC/DC Withstanding Voltage/Insulation Resistance/Ground Bond Tester

AC 200VA AC/DC Withstanding Voltage/Insulation Resistance Tester

AC 200VA AC/DC Withstanding Voltage Tester

AC 200VA AC Withstanding Voltage Tester

APPLICATIONS

Safety Testing of Electrical Product in Manufacturing

Power Cord
Home Appliances
Information Technology Equipment
Medical Equipment

Household and Similar Electrical Appliances
Luminaires
Audio, Video and Similar Electronic Apparatus

Quality Assurance Verification

Safety Standard Compliance Pre-qualification in R&D

SPECIFICATIONS

AC WITHSTANDING

DC WITHSTANDING

INSULATION RESISTANCE

GROUND BOND

MEMORY

INTERFACE

DISPLAY
POWER SOURCE
DIMENSIONS & WEIGHT

* The sweep function and timer off can only be performed when the tester is in the special MANU mode.

Output-Voltage Range
Output-Voltage Resolution
Output-Voltage Accuracy
Maximum Rated Load
Maximum Rated Current
Output-Voltage Waveform
Output-Voltage Frequency
Voltage Regulation
Voltmeter Accuracy
Current Measurement Range
Current Best Resolution
AC Current Measurement Accuracy

Window Comparator Method
ARC Detect
RAMP (Ramp-Up Time)
TIMER (Test Time)*
Sweep Function*
GND

Output-Voltage Range
Output-Voltage Resolution
Output-Voltage Accuracy

Maximum Rated Load
Maximum Rated Current
Voltage Regulation
Voltmeter Accuracy
Current Measurement Range
Current Best Resolution

DC Current Measurement Accuracy

Window Comparator Method
ARC Detect
RAMP (Ramp-Up Time)
TIMER (Test Time)*
Sweep Function*
GND

Output Voltage
Output-Voltage Resolution
Output-Voltage Accuracy
Resistance Measurement Range

Test Voltage

50V V 450V

500V V 1000V

Window Comparator Method
Output Impedance
RAMP (Ramp-Up Time)
TIMER (Test Time)
GND
Sweep Function*

Output-Current
Output-Current Resolution
Output-Current Accuracy
Test-Voltage
Test-Voltage Frequency
Resistance Measurement Range

Resistance Measurement Resolution
Resistance Measurement Accuracy
Window Comparator Method
TIMER (Test Time)
Sweep Function*

Test Method

Single Step Memory
Automatic Testing Memory

Rear Output
RS-232C
USB
GPIB

Remote Terminal (Front)
Signal I/O

0.050kV~ 5.000kV ac
2V/step

±

(1% of setting + 5V) [no load]
200 VA (5kV/40mA)
40mA (0.5kV< V 5kV);10mA (0.05kV V 0.5kV)
Sine wave
50Hz/60Hz selectable

±

(1% of rdg + 5V) [full load no load]→

±

(1% of rdg + 5V)

0.001mA~40.0mA

0.001mA/0.01mA/0.1mA
±(1.5% of rdg+30counts)when HI SET<1.11mA ±(1.5% of rdg+30counts)when HI SET<1.11mA
±(1.5% of rdg+3counts)when HI SET 1.11mA ±(1.5% of rdg+3counts)when HI SET 1.11mA
Yes
Yes

0.1s~999.9s
OFF, 0.5s~999.9s
NOT Support
ON/OFF

0 050kV~6.000kV dc.
2V/step

±(1% of setting + 5V) [no load]
50W(5kV/10mA)
10mA(0.5kV< V 6kV); 2mA (0.05kV V 0.5kV)
±(1% of rdg + 5V)[full load no load]→
±(1% of rdg + 5V)

0.001mA~10.0mA

0.001mA/0.01mA/0.1mA

±(1.5% of rdg+30counts)when HI SET<1.11mA ±(1.5% of rdg+30counts)when HI SET<1.11mA
±(1.5% of rdg+3counts)when HI SET 1.11mA ±(1.5% of rdg+3counts)when HI SET 1.11mA
Yes
Yes

0.1s~999.9s
OFF, 0.5s~999.9s
NOT Support
ON/OFF

50V~1000V dc
50V/step
±(1% of setting +5V)[no load]
1M ~ 9500MΩΩ

Measurable Range Measurable Range

1 ~ 50MΩ
51 ~ 2000MΩ

1 ~ 500MΩ
501 ~ 9500MΩ

Yes
600kΩ

0.1s~999.9s

0.5s~999.9s
OFF (fix)
NOT Support

03.00A~30.00A ac

0.01A
3A I 8A:±(1% of rdg+0.2A), 8A< I 30A:±(1% of rdg+0.05A)
6Vac max (open circuit)
50Hz/60Hz selectable
10m ~ 650.0mΩΩ

0.1mΩ

±(1% of rdg + 2m )Ω
Yes

0.5s~999.9s
NOT Support
Four Terminal

MANU : 100 blocks
AUTO : 100 blocks, menu per auto : 16

NOT Support
Standard Standard
Standard
Option

Standard
Standard

240 x 64 Ice Blue Dot matrix LCD

AC100V/120V/220V/230V 10%, 50/60Hz

330(W) x 148(H) x 452(D) mm
Approx. 19kg max.

ORDERING INFORMATION

GPT-9904

GPT-9903A
GPT-9902A
GPT-9901A

GPT-9804
GPT-9803
GPT-9802
GPT-9801

ACCESSORIES

Quick Start Guide x 1, Power cord x 1, CDx1(complete user manual), Interlock Key x 1,
Remote terminal male plug x 1, Test lead GHT-114 x 1 for GPT-9903A/9902A/9901A/9803/
9802/9801, Test lead GHT-114 x 1, GTL-115 x 1 for GPT-9904/9804

Global Headquarters

GOOD WILL INSTRUMENT CO., LTD.

TF[phone] [phone]

China Subsidiary

GOOD WILL INSTRUMENT (SUZHOU) CO., LTD.

TF[phone] [phone]

Malaysia Subsidiary

GOOD WILL INSTRUMENT (S ) SDN. BHD.EA

TF[phone] [phone]

Europe Subsidiary

GOOD WILL INSTRUMENT EURO B.V.

TF[phone] [phone]

AC 500VA AC/DC Withstanding Voltage/Insulation Resistance/Ground Bond Tester
AC 500VA AC/DC Withstanding Voltage/Insulation Resistance Tester
AC 500VA AC/DC Withstanding Voltage Tester
AC 500VA AC Withstanding Voltage Tester
AC 200VA AC/DC Withstanding Voltage/Insulation Resistance/Ground Bond Tester
AC 200VA AC/DC Withstanding Voltage/Insulation Resistance Tester
AC 200VA AC/DC Withstanding Voltage Tester
AC 200VA AC Withstanding Voltage Tester

U.S.A. Subsidiary

INSTEK AMERICA CORP.

TF[phone] [phone]

Japan Subsidiary

TEXIO TECHNOLOGY CORPORATION.

TF[phone] [phone]

Korea Subsidiary

GOOD WILL INSTRUMENT KOREA CO., LTD.

TF[phone] [phone]

GPT-9800 Series GPT-9900 Series

0.050kV~ 5.000kV ac
2V/step
±(1% of setting + 5V) [no load]
500 VA (5kV/100mA)
100mA (0.5kV< V 5kV); 10mA (0.05kV V 0.5kV)
Sine wave
50Hz/60Hz selectable

±

(1% of rdg + 5V) [full load no load]→

±

(1% of rdg + 5V)

0.001mA~100.0mA

0.001mA/0.01mA/0.1mA

Yes
Yes

0.1s~999.9s
OFF, 0.5s~999.9s
Yes
ON/OFF

0.050kV~6.000kV dc
2V/step

±(1% of setting + 5V) [no load]
100W(5kV/20mA)
20mA(0.5kV< V 6kV); 2mA (0.05kV V 0.5kV)
±(1% of rdg + 5V)[full load no load]→
±(1% of rdg + 5V)

0.001mA~20.0mA

0.001mA/0.01mA/0.1mA

Yes
Yes

0.1s~999.9s
OFF, 0.5s~999.9s
Yes
ON/OFF

50V~1000V dc
50V/step

±(1% of setting +5V)

0.001G ~ 50.00G

[no load]

ΩΩ

Accuracy Accuracy

±(5% of rdg + )
±(10% of rdg + )

±(5% of rdg + )
±(10% of rdg + )

1count ±(5% of 1count)

1count ±(10% of 1count)

1count

1count

0.001 ~ 0.050GΩ

0.051 ~ 2.000GΩ

0.001 ~ 0.500GΩ

0.501 ~ 9.999GΩ

10.00 ~ 50.00GΩ
Yes

600kΩ

0.1s~999.9s

0.5s~999.9s
OFF (fix)
Yes

03.00A~32.00A ac

0.01A
3A I 8A:±(1% of rdg+0.2A), 8A< I 32A:±(1% of rdg+0.05A)
6Vac max (open circuit)
50Hz/60Hz selectable
10m ~650.0mΩΩ

0.1mΩ

±(1% of rdg + 2m )Ω
Yes

0.5s~999.9s
Yes
Four Terminal

MANU : 100 blocks
AUTO : 100 blocks, menu per auto : 16

Standard

Standard
Option
Standard
Standard

240 x 64 Ice Blue Dot matrix LCD

AC100V/120V/220V/230V 10%, 50/60Hz

330(W)x148(H)x482(D)mm(GPT-9902A/9901A/9903A);
330(W)x148(H)x587(D)mm(GPT-9904); Approx. 27kg max.

rdg +

rdg +

±(5% of 1count)

rdg +

rdg +

±(10% of 1count)
±(20% of 1count)

rdg +

Specifications subject to change without notice.

OPTION

Opt.1 GPIB card
Opt.3 GSB-02(6CH H.V./2CH G.B.)Multiplex Scanner Box

Opt.2 GSB-01(8CH H.V.)Multiplex Scanner Box

OPTIONAL ASSESSORIES

GHT-113

High Voltage Test Pistol

GHT-117

HV Adapter

GHT-118

HV/GB Adapter

GHT-205

High Voltage Test Probe

GTL-248

GPIB Cable, approx. 2m

GTL-251

GPIB-USB-HS (High Speed)

FREE DOWNLOAD

PC Software

GPT-9000

GTL-247

USB Cable, A-A type, approx. 1.8m

GTL-232

RS-232C Cable, 9-pin Female to
9-pin null Modem for Computer

GRA-417

RACK Adapter Panel (19”, 4U)

GRA-433

RACK Adapter Panel (19”, 4U)
for GPT-9904 only

Simply Reliable

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PT-9000G3BH