GW Instek GCT-9040 User manual

Ground Bond Tester
GCT-9040
USER MANUAL
GW INSTEK PART NO. 82CT-90400E01
ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information, which is protected by
copyright. All rights are reserved. No part of this manual may be
photocopied, reproduced or translated to another language without
prior written consent of Good Will company.
The information in this manual was correct at the time of printing.
However, Good Will continues to improve products and reserves the
rights to change specification, equipment, and maintenance
procedures at any time without notice.
Good Will Instrument Co., Ltd.
No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan.

Table of Contents
3
Table of Contents
SAFETY INSTRUCTIONS ................................................... 5
GETTING STARTED ........................................................... 9
GCT-9040 Overview ............................. 10
Appearance .......................................... 14
Set Up.................................................. 19
OPERATION.................................................................... 25
Menu Tree............................................ 26
Test Lead Connection ........................... 30
GB Manual Testing .............................. 36
Linked ACW/DCW/IR Tests .................. 57
Common Utility Settings ...................... 66
EXTERNAL CONTROL ..................................................... 74
External Control Overview .................... 75
REMOTE CONTROL ........................................................ 81
Interface Configuration ........................ 82
Command Syntax ................................. 86
Command List for GCT-9040................ 89
Error Messages.................................. 124
FAQ ...............................................................................125
APPENDIX .....................................................................127
Fuse Replacement .............................. 127
Error Messages .................................. 128
GCT-9040 Specifications .................... 130
GCT-9040 Dimensions ....................... 131
Declaration of Conformity .................. 133

GCT-9040 User Manual
4
INDEX............................................................................134

SAFETY INSTRUCTIONS
5
SAFETY INSTRUCTIONS
This chapter contains important safety
instructions that you must follow during
operation and storage. Read the following before
any operation to ensure your safety and to keep
the instrument in the best possible condition.
Safety Symbols
These safety symbols may appear in this manual or on the
instrument.
WARNING
Warning: Identifies conditions or practices that
could result in injury or loss of life.
CAUTION
Caution: Identifies conditions or practices that
could result in damage to the instrument or to
other properties.
Attention Refer to the Manual
Protective Conductor Terminal
Frame or Chassis Terminal
Earth (ground) Terminal

GCT-9040 User Manual
6
Do not dispose electronic equipment as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased.
Safety Guidelines
General
Guideline
CAUTION
Do not place any heavy object on the
instrument.
Avoid severe impact or rough handling that
leads to damaging the instrument.
Do not discharge static electricity to the
instrument.
Use only mating connectors, not bare wires, for
the terminals.
Do not block the cooling fan opening.
Do not disassemble the GCT-9040 unless you
are qualified.
(Measurement categories) EN 61010-1:2010 specifies the
measurement categories and their requirements as follows. The
GCT-9040 does not fall under category II, III or IV.
Measurement category IV is for measurement performed at the
source of low-voltage installation.
Measurement category III is for measurement performed in the
building installation.
Measurement category II is for measurement performed on the
circuits directly connected to the low voltage installation.
Power Supply
WARNING
AC Input voltage range:
100/120/220/230VAC ±10%
Frequency: 50Hz/60Hz
To avoid electrical shock connect the protective
grounding conductor of the AC power cord to
an earth ground.

SAFETY INSTRUCTIONS
7
Cleaning the
GCT-9040
Disconnect the power cord before cleaning.
Use a soft cloth dampened in a solution of mild
detergent and water. Do not spray any liquid.
Do not use chemicals containing harsh material
such as benzene, toluene, xylene, and acetone.
Operation
Environment
Location: Indoor, no direct sunlight, dust free,
almost non-conductive pollution (Note below)
Relative Humidity: ≤70% (no condensation)
Altitude: < 2000m
Temperature: 0˚C~40˚C
(Pollution Degree) EN 61010-1:2010 specifies the pollution degrees
and their requirements as follows. The GCT-9040 falls under degree
2.
Pollution refers to “addition of foreign matter, solid, liquid, or
gaseous (ionized gases), that may produce a reduction of dielectric
strength or surface resistivity”.
Pollution degree 1: No pollution or only dry, non-conductive
pollution occurs. The pollution has no influence.
Pollution degree 2: Normally only non-conductive pollution
occurs. Occasionally, however, a temporary conductivity caused
by condensation must be expected.
Pollution degree 3: Conductive pollution occurs, or dry, non-
conductive pollution occurs which becomes conductive due to
condensation which is expected. In such conditions, equipment
is normally protected against exposure to direct sunlight,
precipitation, and full wind pressure, but neither temperature
nor humidity is controlled.
Storage
environment
Location: Indoor
Temperature: -10°C to 70°C
Relative Humidity: ≤ 85% (no condensation)
Disposal
Do not dispose this instrument as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased. Please make sure
discarded electrical waste is properly recycled to
reduce environmental impact.

GCT-9040 User Manual
8
Power cord for the United Kingdom
When using the tester in the United Kingdom, make sure the power
cord meets the following safety instructions.
NOTE: This lead/appliance must only be wired by competent persons
WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT: The wires in this lead are coloured in accordance with the
following code:
Green/ Yellow:
Earth
Blue:
Neutral
Brown:
Live (Phase)
As the colours of the wires in main leads may not correspond with
the coloured marking identified in your plug/appliance, proceed
as follows:
The wire which is coloured Green & Yellow must be connected to
the Earth terminal marked with either the letter E, the earth symbol
or coloured Green/Green & Yellow.
The wire which is coloured Blue must be connected to the terminal
which is marked with the letter N or coloured Blue or Black.
The wire which is coloured Brown must be connected to the
terminal marked with the letter L or P or coloured Brown or Red.
If in doubt, consult the instructions provided with the equipment
or contact the supplier.
This cable/appliance should be protected by a suitably rated and
approved HBC mains fuse: refer to the rating information on the
equipment and/or user instructions for details. As a guide, a cable
of 0.75mm2should be protected by a 3A or 5A fuse. Larger
conductors would normally require 13A types, depending on the
connection method used.
Any exposed wiring from a cable, plug or connection that is
engaged in a live socket is extremely hazardous. If a cable or plug is
deemed hazardous, turn off the mains power and remove the cable,
any fuses and fuse assemblies. All hazardous wiring must be
immediately destroyed and replaced in accordance to the above
standard.

GETTING STARTED
9
GETTING STARTED
This chapter describes the safety tester in a
nutshell, including its main features and front /
rear panel introduction. After going through the
overview, please read the safety considerations in
the Set Up chapter.
POWER
START STOP
REMOTE
MANU EDIT/SAVE UTILITY
ESC PAGE
PASS FAIL READY TEST
CAUTION
GB Rx
SENSE H
SOURCE H
SENSE L
SOURCE L
40A MAX.
GCT-9040 Ground Bond Tester
GCT-9040 Overview ......................................................... 10
Introduction to the GCT-9040................................................................ 10
Main Features .......................................................................................... 11
Accessories ............................................................................................... 11
Package Contents .................................................................................... 13
Appearance ..................................................................... 14
Front Panel ............................................................................................... 14
Rear Panel................................................................................................. 17
Set Up............................................................................. 19
Line Voltage Connection and Power Up ............................................. 19
Installing the Optional GPIB Card........................................................ 21
Workplace Precautions........................................................................... 22
Operating Precautions............................................................................ 23

GCT-9040 User Manual
10
GCT-9040 Overview
Introduction to the GCT-9040
GCT-9040 is a ground bond tester that can operate as a standalone
unit or in conjunction with a GPT-9000 Series safety tester to
perform additional ACW/DCW/IR tests before, after or
simultaneously(ACW/DCW only) with GB tests.
When the GCT-9040 operates with a GPT-9000 Series safety tester,
it uses a dedicated LINK port and remote commands to
communicate in a master-slave fashion. The GCT-9040 operates as
the master and the GPT-9000 Series unit operates as a slave.
The GCT-9040 can store up to 100 manual tests allowing the safety
testers to accommodate any number of safety standards, including
IEC, EN, UL, CSA, GB, JIS and others.
Note: Throughout this user manual, the terms ACW, DCW, IR and
GB refer to AC Withstanding, DC Withstanding, Insulation
Resistance and Ground Bond testing, respectively. GPT-9000 refers
to any of the GPT-98XX or GPT-99XX models, GPT-9000A refers to
any of the GPT-99XXA models. For information specific to the GPT-
9000, please see the GW Instek website, http://www.gwinstek.com.

GETTING STARTED
11
Main Features
Performance
GB: 3A~40A ac
Features
100 test conditions (MANU mode)
Over temperature, voltage and current
protection
Pass, Fail, Test, Caution and Ready indicators
PWM output (90% efficiency, increased
reliability)
Interlock (configurable).
Interface
Remote control start/stop interface terminal
USB interface for programming
Optional GPIB interface for programming
Signal I/O port for pass/fail/test monitoring
and start/stop control/interlock
LINK port to control slave units for ACW, DCW
and IR tests.
Accessories
Standard
Accessories
Part number
Description
Region dependent
Power cord
GTL-215 x1
GB Test leads
N/A
Remote terminal male plug
N/A
Interlock key
GTL-247
Type A-A USB cable
GTL-132
Link cable

GCT-9040 User Manual
12
Optional
Accessories
Part number
Description
GTL-248
GPIB cable
GTL-251
GPIB-USB-HS (high speed)
GRA-417
Rack Adapter Panel (19”, 4U)
Options
Part number
Description
Opt.01 GPIB Interface
GPIB card

GETTING STARTED
13
Package Contents
Check the contents before using the GCT-9040.
Opening the box
Contents
(single unit)
GCT-9040 unit
Quick Start guide
User manual CD
CTC (Calibration
Traceable Certificate)
Type A-A USB cable
Power cord x1 (region
dependent)
GTL-215 test leads x1
GTL-132 LINK cable
Remote terminal male
plug
Interlock key
Note
Keep the packaging, including the box, polystyrene
foam and plastic envelopes should the need arise
to return the unit to GW Instek.

GCT-9040 User Manual
14
Appearance
Front Panel
PASS/FAIL indicators
Directional keys
Function keys
CAUTION
indicator
Sense H and L
terminals
REMOTE terminal
STOP button
START button
POWER
button
Display
Scroll wheel
Configuration keys
READY indicator
TEST indicator
POWER
START STOP
REMOTE
MANU EDIT/SAVE UTILITY
ESC PAGE
PASS FAIL READY TEST
CAUTION
GB Rx
SENSE H
SOURCE H
SENSE L
SOURCE L
40A MAX.
GCT-9040 Ground Bond Tester
Source H and L
terminals
Display
240 X 64 dot matrix display (LCD)
Function keys
The function keys correspond to the soft-keys
directly above on the main display.
Pass/Fail
indicators
PASS
FAIL
The PASS and FAIL indicators
light up upon a PASS or FAIL test
result at the end of a manual test
or automatic test.
ESC key
ESC
The ESC key is used to exit out of
a menu or cancel a setting.
PAGE key
PAGE
The PAGE key is used in the EDIT
status to toggle the HI/LO setting
between mΩ & V.
Directional arrow
keys
The directional arrow keys are
used to navigate menus and
parameter settings.

GETTING STARTED
15
READY indicator
READY
The READY indicator is lit when
the tester is ready to begin testing.
The STOP button is used to put
the tester into READY status.
TEST indicator
TEST
The TEST indicator is lit when a
test is on. The START button is
used to put the tester into TEST
status.
CAUTION
indicator
CAUTION
40A MAX.
The CAUTION indicator will light
up when the output terminals are
active. Only after the test has
finished or stopped will the
indicator turn off.
SENSE and
SOURCE
terminals
GB Rx
SENSE H
SOURCE H
SENSE L
SOURCE L
The SOURCE H, SOURCE L,
SENSE H and SENSE L
terminals are used for GB
testing.
Scroll wheel
The scroll wheel is used to edit
parameter values.
UTILITY key
UTILITY
Used to enter the Common Utility
menu.
EDIT/SAVE key
EDIT/SAVE
Used to start editing MANU tests
as well as save settings and
parameters.
MANU key
MANU
The MANU key is used to select
manual tests.

GCT-9040 User Manual
16
REMOTE
terminal
REMOTE
The REMOTE terminal is used to
connect to a remote controller.
STOP button
STOP
The STOP button is used to
stop/cancel tests. The STOP
button will also put the tester in
the READY status to begin testing.
START button
START
The START button is used to start
tests.
The START button can be used to
start tests when the tester is in the
READY status. Pressing the
START button will put the tester
in the TEST status.
POWER switch
POWER
Turns the power on. The tester
will always start up with the last
test setting from when the
instrument was last powered
down.

GETTING STARTED
17
Rear Panel
SIGNAL I/O USB A port LINK port Fan
Fuse selectorLine voltage
Optional GPIB port
GND
TOAVOIDELECTRICSHOCK THEPOWER CORD
PROTECTIVE GROUNDINGCONDUCTORMUST BE
ONLYWITHSPECIFIED TYPE ANDRATED FUSE.
NOOPERATORSERVICEABLE COMPONENTSINSIDE.
DONOTREMOVECOVERS.REFER SERVICING TO
FOR CONTINUEDFIREPROTECTION.REPLACE
CONNECTEDTOGROUND.
QUALIFIEDPERSONNEL.
WARNING
AC
LINEVOLTAGE
100V
230V
220V
120V
SELECTION
RANGE
(50/60Hz)
250V
250V
T 7A
FUSE
T 4A
POWER MAX.
700VA
GND
SIGNAL I / O LINK
SER. NO. LB
ENSURETHEPOWERISREMOVEDFROM
THEINSTRUMENTBEFOREREPLACINGTHEFUSE
GPIB
90-110V
108-132V
198-242V
207-250V
SIGNAL I/O port
SIGNAL I / O
The SIGNAL I/O port is used to
monitor the tester status (PASS,
FAIL, TEST) and input (START/
STOP signals). It is also used with
the Interlock key.
USB A port
Used for remote control and
firmware updates.
LINK port
LINK
With the GCT-9040 acting as the
master unit, the LINK port is used
to control a GPT-9XXX slave unit to
perform additional ACW, DCW or
IR tests.
Fan/Fan Vents
Exhaust fan. Allow enough room
for the fan to vent. Do not block the
fan openings.
GND
GND
Connect the GND (ground)
terminal to the earth ground.

GCT-9040 User Manual
18
Line voltage input
220
230
100
120
Line voltage input:
100/120/220/230VAC ±10%
Line voltage fuse
220
230
100
120
Line voltage selector and fuse:
100V/120V
T7A 250V
220V/230V
T4A 250V
Optional GPIB
port
GPIB
Optional GPIB interface for remote
control.

GETTING STARTED
19
Set Up
Line Voltage Connection and Power Up
Background
Before powering up the GCT-9040 ensure the
correct voltage has been selected on the rear
panel. The GCT-9040 supports line voltages of
100V/120V/220V and 230V.
Steps
1. Check the line voltage and the fuse
in the fuse holder.
Page 127
The desired line voltage
should line up with the
arrow on the fuse holder.
220
100
120
230
2. Connect the power cord to
the AC voltage input.
22
0
100
120
230
3. If the power cord does not
have an earth ground,
ensure the ground
terminal is connected to an
earth ground.
GND
Warning
Ensure the power cord is connected to an earth
ground. Failure could be harmful to the operator
and instrument.
4. Press the Power button.
POWER

GCT-9040 User Manual
20
5. When the unit is powering up, all the LED
indicators will light. Check to make sure all 5
LED indicators are working.
6. Check to make sure the System Self Test passes
without errors.
S y s e mt
H a r w a rd e C
h
C h e c i g . .n .
F i r w a rm e C h
SYS T E
SM E L F T E
S T
k
e c i g . .n .k
e c i g . .n .k
After the System Self Test completes, the tester will
go into VIEW status and be ready to operate.
20 0
I N KL G BG - W C O NF T
E
F R E Q = 0 H z6
1
0 00A
VOL = .0 0 00
EIV
G B R = m MT I E = 0 0 1 . 0 SR
0 0 VER F =# . 00
VIH = .0 0 08
0 0 . 1 S0A M P =R
W
VIEW status
MM A UN N A_M A N U = * * * -
V
Ω
WARNING
See the Appendix on page 128 for details if a self-
test error is detected.