I-Tech IT7800 Series User manual

Programmable AC Power
Supply
IT7800 Series User Manual
Model: IT7800
Version: V1.0/2021.04

Notices
© Itech Electronic, Co., Ltd. 2021
No part of this manual may be
reproduced in any form or by any
means ( including electronic storage
and retrieval or translation into a foreign
language) without prior permission and
written consent from Itech Electronic,
Co., Ltd. as governed by international
copyright laws.
Manual Part Number
IT7800
Revision
1st Edition: April 7, 2021.
Itech Electronic, Co., Ltd.
Trademarks
Pentium is U.S. registered trademarks
of Intel Corporation.
Microsoft, Visual Studio, Windows and
MS Windows are registered trademarks
of Microsoft Corporation in the United
States and/or other countries and
regions.
Warranty
The materials contained in this
document are provided “as is”, and
is subject to change, without prior
notice, in future editions. Further, to
the maximum extent permitted by
applicable laws, ITECH disclaims all
warrants, either express or implied,
with regard to this manual and any
information contained herein,
including but not limited to the
implied warranties of
merchantability and fitness for a
particular purpose. ITECH shall not
be held liable for errors or for
incidental or indirect damages in
connection with the furnishing, use
or application of this document or of
any information contained herein.
Should ITECH and the user enter
into a separate written agreement
with warranty terms covering the
materials in this document that
conflict with these terms, the
warranty terms in the separate
agreement shall prevail.
Technology Licenses
The hardware and/or software described
herein are furnished under a license and
may be used or copied only in
accordance with the terms of such
license.
Restricted Rights Legend
Restricted permissions of the U.S.
government. Permissions for software
and technical data which are authorized
to the U.S. Government only include
those for custom provision to end users.
ITECH provides this customary
commercial license in software and
technical data pursuant to FAR 12.211
( Technical Data) and 12.212
( Computer Software) and DFARS
252.227-7015 ( Technical Data –
Commercial Items) and DFARS
227.7202-3 ( Rights in Commercial
Computer Software or Computer
Software Documentation).
Safety Notices
A CAUTION sign denotes a
hazard. It calls attention to an
operating procedure or practice
that, if not correctly performed or
adhered to, could result in
damage to the product or loss of
important data. Do not proceed
beyond a CAUTION sign until
the indicated conditions are fully
understood and met.
A WARNING sign denotes a
hazard. It calls attention to an
operating procedure or practice
that, if not correctly performed or
adhered to, could result in
personal injury or death. Do not
proceed beyond a WARNING
sign until the indicated
conditions are fully understood
and met.
NOTE
A NOTE sign denotes important
hint. It calls attention to tips or
supplementary information that
is essential for users to refer to.

IT7800 User Manual
Copyright ©ITECH Electronic Co., Ltd. i
Quality Certification and Assurance
We certify that IT7800 series power supply meets all the published specifications
at time of shipment from the factory.
Warranty ITECH warrants that the product will be free from defects in material and
workmanship under normal use for a period of one ( 1) year from the date of
delivery ( except those described in the Limitation of Warranty below).
For warranty service or repair, the product must be returned to a service center
designated by ITECH.
⚫The product returned to ITECH for warranty service must be shipped
PREPAID. And ITECH will pay for return of the product to customer.
⚫If the product is returned to ITECH for warranty service from overseas, all
the freights, duties and other taxes shall be on the account of customer.
Limitation of Warranty
This Warranty will be rendered invalid if the product is:
⚫Damaged resulting from customer-wired circuits or customer-supplied parts
or accessories;
⚫Modified or repaired by customer without authorization;
⚫Damaged resulting from customer-wired circuits or use in an environment
not designated by us;
⚫The product model or serial number is altered, deleted, removed or made
illegible by customer;
⚫Damaged as a result of accidents, including but not limited to lightning,
moisture, fire, improper use or negligence.
Safety Symbols
Direct current
ON ( power)
Alternating current
OFF ( power)
Both direct and alternating
current
Power-on state
Chassis (earth ground)
symbol.
Power-off state
Earth ( ground) terminal
Reference terminal
Caution
Positive terminal
Warning ( refer to this manual
for specific Warning or
Caution information)
Negative terminal

IT7800 User Manual
Copyright ©ITECH Electronic Co., Ltd. ii
A chassis terminal
-
-
Safety Precautions
The following safety precautions must be observed during all phases of
operation of this instrument. Failure to comply with these precautions or specific
warnings elsewhere in this manual will constitute a default under safety
standards of design, manufacture and intended use of the instrument. ITECH
assumes no liability for the customer’s failure to comply with these precautions.
⚫Do not use the instrument if it is damaged. Before operation, check
the casing to see whether it cracks. Do not operate the instrument in
the presence of inflammable gasses, vapors or dusts.
⚫The instrument is provided with a power cord during delivery and
should be connected to a socket with a protective earth terminal, a
junction box or a three-phase distribution box. Before operation, be
sure that the instrument is well grounded.
⚫Check all marks on the instrument before connecting the instrument
to power supply.
⚫Use electric wires of appropriate load. All loading wires should be
capable of bearing maximum short-circuit of electronic load without
overheating. If there are multiple loads, each pair of the load power
cord must be carry out the full rated short-circuit output current of
the power securely.
⚫Ensure the voltage fluctuation of mains supply is less than 10% of
the working voltage range in order to reduce risks of fire and electric
shock.
⚫Do not install alternative parts on the instrument or perform any
unauthorized modification.
⚫Do not use the instrument if the detachable cover is removed or
loosen.
⚫To prevent the possibility of accidental injuries, be sure to use the
power adapter supplied by the manufacturer only.
⚫We do not accept responsibility for any direct or indirect financial
damage or loss of profit that might occur when using the instrument.
⚫This instrument is used for industrial purposes, do not apply this
product to IT power supply system.
⚫Never use the instrument with a life-support system or any other
equipment subject to safety requirements.
⚫SHOCK HAZARD Ground the Instrument. This product is provided with a
protective earth terminal. To minimize shock hazard, the instrument must
be connected to the AC mains through a grounded power cable, with the
ground wire firmly connected to an electrical ground (safety ground) at the
power outlet or distribution box. Any interruption of the protective

IT7800 User Manual
Copyright ©ITECH Electronic Co., Ltd. iii
(grounding) conductor or disconnection of the protective earth terminal will
cause a potential shock hazard that could result in injury or death.
⚫Before applying power, verify that all safety precautions are taken. All
connections must be made with the instrument turned off, and must be
performed by qualified personnel who are aware of the hazards involved.
Improper actions can cause fatal injury as well as equipment damage.
⚫SHOCK HAZARD, LETHAL VOLTAGES This product can input the
dangerous voltage that can cause personal injury, and the operator must
always be protected from electric shock. Ensure that the input electrodes
are either insulated or covered using the safety covers provided, so that
no accidental contact with lethal voltages can occur.
⚫Never touch cables or connections immediately after turning off the
instrument. Verify that there is no dangerous voltage on the electrodes or
sense terminals before touching them.
⚫Failure to use the instrument as directed by the manufacturer may
render its protective features void.
⚫Always clean the casing with a dry cloth. Do not clean the internals.
⚫Make sure the vent hole is always unblocked.
Environmental Conditions
The instrument is designed for indoor use and an area with low condensation.
The table below shows the general environmental requirements for the
instrument.
Environmental Conditions
Requirements
Operating temperature
0°C～40°C
Operating humidity
20%～80%( non-condensation)
Storage temperature
-10°C～70 °C
Altitude
Operating up to 2,000 meters
Installation category
II
Pollution degree
Pollution degree 2
Note
To make accurate measurements, allow the instrument to warm up for 30 min.
Regulatory Markings
The CE mark indicates that the
product complies with all the relevant
European legal directives. The specific
year ( if any) affixed refers to the year
when the design was approved.
The instrument complies with the
WEEE Directive ( 2002/96/EC)
marking requirement. This affix
product label indicates that you must
not discard the electrical/electronic
product in domestic household waste.

IT7800 User Manual
Copyright ©ITECH Electronic Co., Ltd. iv
This symbol indicates the time period
during which no hazardous or toxic
substances are expected to leak or
deteriorate during normal use. The
expected useful life of the product is
10 years. The product can be used
safely during the 10-year Environment
Friendly Use Period ( EFUP). Upon
expiration of the EFUP, the product
must be immediately recycled.
Waste Electrical and Electronic Equipment ( WEEE)
Directive
2002/96/EC Waste Electrical and Electronic Equipment
( WEEE) Directive
This product complies with the WEEE Directive
( 2002/96/EC) marking requirement. This affix product label
indicates that you must not discard the electrical/electronic
product in domestic household waste.
Product Category
With reference to the equipment classifications described in
the Annex 1 of the WEEE Directive, this instrument is
classified as a “Monitoring and Control Instrument”.
To return this unwanted instrument, contact your nearest
ITECH office.

IT7800 User Manual
Copyright ©ITECH Electronic Co., Ltd. v
Compliance Information
Complies with the essential requirements of the following applicable European
Directives, and carries the CE marking accordingly:
⚫Electromagnetic Compatibility (EMC) Directive 2014/30/EU
⚫Low-Voltage Directive (Safety) 2014/35/EU
Conforms with the following product standards:
EMC Standard
IEC 61326-1:2012/ EN 61326-1:2013 ¹²³
Reference Standards
CISPR 11:2009+A1:2010/ EN 55011:2009+A1:2010 (Group 1, Class A)
IEC 61000-4-2:2008/ EN 61000-4-2:2009
IEC 61000-4-3:2006+A1:2007+A2:2010/ EN 61000-4-
3:2006+A1:2008+A2:2010
IEC 61000-4-4:2004+A1:2010/ EN 61000-4-4:2004+A1:2010
IEC 61000-4-5:2005/ EN 61000-4-5:2006
IEC 61000-4-6:2008/ EN 61000-4-6:2009
IEC 61000-4-11:2004/ EN 61000-4-11:2004
1. The product is intended for use in non-residential/non-domestic
environments. Use of the product in residential/domestic environments may
cause electromagnetic interference.
2. Connection of the instrument to a test object may produce radiations beyond
the specified limit.
3. Use high-performance shielded interface cable to ensure conformity with the
EMC standards listed above.
Safety Standard
IEC 61010-1:2010/ EN 61010-1:2010

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Copyright ©ITECH Electronic Co., Ltd. 6
Content
Quality Certification and Assurance............................................................................................................................i
Warranty .....................................................................................................................................................................i
Limitation of Warranty ................................................................................................................................................i
Safety Symbols ............................................................................................................................................................i
Safety Precautions......................................................................................................................................................ii
Environmental Conditions.........................................................................................................................................iii
Regulatory Markings .................................................................................................................................................iii
Waste Electrical and Electronic Equipment ( WEEE) Directive..................................................................................iv
Compliance Information ............................................................................................................................................v
Chapter1 Quick Reference ............................................................................................................................. 8
1.1 Brief Introduction.................................................................................................................................................8
1.2 Front Panel Introduction ......................................................................................................................................9
1.3 Keyboard Introduction .......................................................................................................................................10
1.4 Push-on Knob .....................................................................................................................................................12
1.5 Rear Panel Introduction .....................................................................................................................................12
1.6 Home-Screen Overview .....................................................................................................................................13
1.7 Optional accessories ..........................................................................................................................................16
Chapter2 Inspection and Installation ........................................................................................................... 18
2.1 Verifying the Shipment.......................................................................................................................................18
2.2 Instrument Size Introduction .............................................................................................................................18
2.3 Connectiong the Power Cord .............................................................................................................................19
2.4 Connecting Test Lines ( Optional).......................................................................................................................22
Chapter3 Getting Started............................................................................................................................. 27
3.1 Power-on the Instrument...................................................................................................................................27
3.2 Touch Screen Introduction .................................................................................................................................28
3.3 Set output parameters .......................................................................................................................................28
3.4 Output On/Off Control.......................................................................................................................................29
Chapter4 Operation and Application ........................................................................................................... 30
4.1 Select the Power Supply Mode ..........................................................................................................................30
4.2 Select the Output Mode.....................................................................................................................................31
4.2.1 AC Output Mode .........................................................................................................................................31
4.2.2 DC Output Mode .........................................................................................................................................31
4.2.3 AC+DC Mode ...............................................................................................................................................32
4.2.4 DC+AC Mode ...............................................................................................................................................33
4.3 Waveform Selection ...........................................................................................................................................33
4.4 Auto-range Function ..........................................................................................................................................34
4.5 Output Characteristic .........................................................................................................................................34
4.6 Current Limit Mode and Power Limit Mode ......................................................................................................35
4.7 Sweep Function..................................................................................................................................................35
4.8 Power Amplifier .................................................................................................................................................37
4.9 Programmable Output Impedance ....................................................................................................................37
4.10 Polyphase Function ..........................................................................................................................................38
Chapter5 System-Related Functions ............................................................................................................ 40
5.1 System Menu Reference ....................................................................................................................................40
5.1.1 Menu function.............................................................................................................................................44
5.1.2 Set the communication interface ................................................................................................................45
5.1.4 View the System Information ......................................................................................................................45
5.2 Configuration Menu Reference ..........................................................................................................................46
5.3 Key Lock Function...............................................................................................................................................48
5.4 Switching Local/Remote Mode ..........................................................................................................................48
5.5 Save and Recall Operations ................................................................................................................................49
5.6 Protection Function............................................................................................................................................50

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5.6.1 Current RMS Protection ..............................................................................................................................51
5.6.2 Set the Current Peak protection ..................................................................................................................51
5.6.3 Set Voltage/Current/Power Limit Range .....................................................................................................52
5.6.4 Over-temperature protection (OTP) ............................................................................................................52
5.6.5 Over-power protection (OPP)......................................................................................................................52
5.7 Screen Capture Function....................................................................................................................................52
5.8 Trigger Function .................................................................................................................................................53
5.9 Set Parallel Operation Mode ..............................................................................................................................53
5.10 Remote Measurement Function ......................................................................................................................55
5.11 Digital I/O Function ..........................................................................................................................................56
5.12 Analogue Function (Ext-Program) (Optional)...................................................................................................59
Chapter6 Measurement Functions............................................................................................................... 63
6.1 Meter Mode .......................................................................................................................................................63
6.2 Oscilloscope Mode .............................................................................................................................................64
6.3 Harmonic measurement ....................................................................................................................................66
6.4 Recorder Function..............................................................................................................................................68
Chapter7 Configuration Arbitrary Waveform ............................................................................................... 70
7.1 List Function .......................................................................................................................................................70
7.1.1 Create a new List file ..............................................................................................................................70
7.1.2 Select/Run List File ......................................................................................................................................72
7.1.3 Import/Export List file .................................................................................................................................73
7.2 Setting of Surge/Sag Configuration ....................................................................................................................74
7.3 Self-defined Waveform Function........................................................................................................................75
7.3.1 THD ...........................................................................................................................................................75
7.3.2 User-defined waveform ..........................................................................................................................77
Chapter8 Technical Specifications ................................................................................................................ 79
8.1 Main technical parameters ................................................................................................................................79
IT7803-350-30U ...................................................................................................................................................79
IT7805-350-30U ...................................................................................................................................................81
IT7806-350-90......................................................................................................................................................82
IT7809-350-90......................................................................................................................................................85
IT7812-350-90......................................................................................................................................................87
IT7815-350-90......................................................................................................................................................89
8.2 Supplemental characteristics .............................................................................................................................92
Chapter9 Remote Control ............................................................................................................................ 93
9.1 USB Interface......................................................................................................................................................93
9.2 LAN Interface......................................................................................................................................................93
9.3 CAN Interface .....................................................................................................................................................95
9.4 GPIB Interface (Optional) ...................................................................................................................................96
9.5 RS-232 Interface (Optional)................................................................................................................................97
9.6 Commonly Used Commands Overview..............................................................................................................98
9.7 Demo Software Introduction .............................................................................................................................99
APPENDIX........................................................................................................................................................... 100
SPECIFICATIONS OF RED AND BLACK TEST LINES ................................................................................................................100

Quick Reference
Copyright ©ITECH Electronic Co., Ltd. 8
Chapter1 Quick Reference
This chapter introduces the front panel, the rear panel, key functions and LCD
display function of the IT7800 series power supply, make sure that you can
quickly know the appearance, instruction and the key function before you
operate the power supply. Help you make better use of this series of power
supply.
1.1 Brief Introduction
ITECH IT7800 3U high series of programmable AC/DC power supply, with power
up to 15kVA, voltage ranges up to 350V L-N and 500V L-N. Users are able to
increase output power up to 960kVA by configuring master-slave parallel. With
intuitive LCD touch panel interface, users can be quickly familiar with the unit
operation.
IT7800 series is built-in power meter and arbitrary waveform generator, which is
able to simulate harmonics and other arbitrary waveformoutput. Users can
choose single phase, three-phase, phase reversal, and multi-channel totally 4
output modes, with programmable output, and complete measurements, ITECH
IT7800 series is designed for new energy, power electronics, research institutes
etc.
⚫High power density, 3U up to 15kVA
⚫Master-slave parallel with current sharing technology, up to 960kVA,
multiple units in parallel work as one
⚫Voltage up to 350V L-N, 500V L-N
⚫Output frequency: 16-2400Hz, programmable slew rate setting for changing
voltage and frequency
⚫Built-in single/3-phase AC power meter
⚫Multi-channel function, single unit can connect/test up to 3 DUTs*1
⚫4 output modes: AC/DC/AC+DC/DC+AC
⚫Choose single phase, three-phase, reverse phase output mode, to simulate
3-phase imbalance, 3-phase harmonics imbalance, split phase test, reverse
phase sequence tests etc.*1
⚫Comprehensive harmonics measurement and Voltage harmonic simulation,
up to 50th
⚫Harmonics, inter-harmonics waveform synthesizer, according to IEC 61000-
4-13
⚫Programmable output impedance, according to IEC 61000-3-3
⚫Intuitive touch screen interface
⚫Simulate arbitrary waveform output, support csv. file import
⚫Built-in various waveforms
⚫List mode simulates the power supply reproduction function to realize the
simulation function of instantaneous power interruption
⚫Provides various trigger input/output signals. When amplitude/frequency
change, trigger signals can be generated to synchronously capture the
current waveform of DUTs
⚫Output 0-360 ° start/stop phase angle can be set
⚫Surge/Sag function

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⚫Relay CTRL function, to cut off the connection between instrument and DUT
⚫Built-in USB/CAN/LAN/Digital IO interface, optional GPIB / Analog&RS232
⚫With professional software, set up programs comply with multinational
security regulations and test conditions, to complete civil aviation
electronics and IEC related standards testing
*1: 3k/5kVA model only support single phase and single channel.
Model
Power
Voltage
Current
Phase
IT7803-350-30U
3kVA
350V
30A
1Φ
IT7805-350-30U
5kVA
350V
30A
1Φ
IT7806-350-90
6kVA
350V
90A
1Φ or 3Φ
IT7809-350-90
9kVA
350V
90A
1Φ or 3Φ
IT7812-350-90
12kVA
350V
90A
1Φ or 3Φ
IT7815-350-90
15kVA
350V
90A
1Φ or 3Φ
IT7830-350-180
30kVA
350V
180A
1Φ or 3Φ
IT7845-350-270
45kVA
350V
270A
1Φ or 3Φ
IT7860-350-360
60kVA
350V
360A
1Φ or 3Φ
IT7875-350-450
75kVA
350V
450A
1Φ or 3Φ
IT7890-350-540
90kVA
350V
540A
1Φ or 3Φ
IT78105-350-630
105kVA
350V
630A
1Φ or 3Φ
IT78120-350-720
120kVA
350V
720A
1Φ or 3Φ
IT78135-350-810
135kVA
350V
810A
1Φ or 3Φ
IT78150-350-900
150kVA
350V
900A
1Φ or 3Φ
IT78165-350-990
165kVA
350V
990A
1Φ or 3Φ
Note
Naming rules for this series of model are as follows: IT78XXX-YYY-ZZZ,
wherein, XXX means rated power, YYY means rated voltage, and ZZZ
means rated current. Take IT7815-350-90 for an example, the rated
power is 15kVA, rated voltage is 350V and rated current is 90A.
1.2 Front Panel Introduction
The front panel of IT7800 is as shown below.

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Copyright ©ITECH Electronic Co., Ltd. 10
1 Power Switch
2 USB interface /Print/Trig/Menu
3 LCD touch screen
4 Function key
5 Number key
6 Up, down, left and right key and enter key
7 Rotary knob
8 Vent hole
1.3 Keyboard Introduction
The keyboard introduction of IT7800 series Power Supply is shown as follows.
Keys
Description
Print
Used for saving screen images
Trig
Used for manual trigger
Power
Power Switch
Menu
Used for going back to menu page
[V-set]
Set the output voltage value
[F-set]
• AC mode: set the output frequency
• DC mode: [F-set] is invalid
Config
Enter to Configuration menu
Basic metering key used for basic metering.
Waveform Display key When this key is pressed, the
waveform corresponding to current measurement data
will be displayed.
Harmonic Measurement key When this key is pressed,
the harmonic measurement results and the menu of
harmonic measurement parameter configuration will be
displayed.
[On/Off]
Turn the power supply output on or off. When lit,

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Copyright ©ITECH Electronic Co., Ltd. 11
Keys
Description
indicates that the output is enabled or on.
Shift
Composite key, combined with other keys to realize
functions marked above keys.
Esc
Press this key to exit the current operation interface.
[0]-[9]
Number key. Enter the number directly
+/–
Positive and negative signs
.
Decimal point
Left / Right
Navigation keys
The left and right navigation keys are used to adjust the
cursor to the specified position or scrolls pages to view
menu items.
Up / Down
Navigation keys
The up and down navigation keys are used to scroll page
up and down to view menu items.
Enter
Operation confirmation key
Composite key [Shift], combined with other keys to realize functions marked
above keys. In this manual, composite key is displayed as [Shift]+[Esc]. Firstly,
press [shift] and the shift key will be lighted, and then press the function key,
the detailed functions are listed as follows.
Keys
Description
[Shift]+[V-set](List)
Enter the List function menu.
[Shift]+[F-set] (Sweep)
Enter the Sweep function menu.
[Shift]+[Config](Protect)
Enter the protection setting menu.
[Shift]+ (System)
Enter the System setting menu. Used to
set the system parameters.
[Shift]+
（Surge&Sag）
Enter the Surge and Sag menu, used to
Set the Surge/trapped Configuration.
[Shift]+ （Standard）
Enter the standard wave selection
interface.
[Shift]+[1](Log)
Enter the data logging function menu.
[Shift]+ [2] (Lock)
Turn the keyboard lock on or off.
[Shift]+[3] (Local)
Switch remote control mode to local
control mode.
[Shift]+[4] (Save)
Save the common parameter settings.
[Shift]+ [5] (Recall)
Enter the Protect menu of the power
supply.
[Shift]+ [6] (Hold)
When you need to keep the present
meter status, you can press the keys.
Then the present meter status display
and will be kept no matter whether output
is running.
[Shift]+ [7] (Help)
Obtain the help information.

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Copyright ©ITECH Electronic Co., Ltd. 12
1.4 Push-on Knob
The IT7800 series Power Supply provides a knob on the front panel as shown
in the next figure.
The functions of the posh-on knob is described as follows.
⚫Adjust the value setting
⚫Select menu item
⚫Confirm the set value or the selected menu item
Adjust the Value Setting
In the value setting interface, rotate the knob clockwise to increase the set value
and anticlockwise to decrease the set value.
Select Menu Item
The knob can also be used to view menu items. In the menu item display
interface, turning the knob clockwise indicates that the next menu item is
selected, and turning the knob anticlockwise indicates that the previous menu
item is selected.
Confirm settings
After completing the value setting or selecting a menu item, pushing the knob
acts like pressing [Enter] key to confirm the operation.
1.5 Rear Panel Introduction
The rear panel of the IT7800 series 3U model is shown below.
No.
Name
Description
1
ground terminal
Ground screw for making chassis ground
connections.
2
Output terminals
AC or DC output terminals and chassis ground
terminals, used to connect DUT.

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Copyright ©ITECH Electronic Co., Ltd. 13
3
Remote sense
Terminals
Output
lock terminals
and
SL+ and SN- are remote sense terminals, used
for maximizing measurement accuracy.
4
Optional
expansion slot
Optional interfaces: (Plastic plugs are inserted
by default when the user does not purchase the
interface.)
The optional interface as follows:
⚫GPIB
⚫RS-232/ Analog interface
5
I/O
terminals/CAN
interface
Digital Port
CAN communication interface CAN-H and CAN-
L
6
LAN interface
LAN communication interface
7
External control
interface CTRL
This interface is used for the parallel connection
between the master (with
operation panel) and the slaves (without
operation panel). Connect the interface
on the rear panel of each unit to be connected
in parallel, and the master can offer
synchronous control over the power-on/off of
the slaves.
8
USB interface
USB communication interface.
9
system bus
Used for communication between instruments in
parallel operation feature.
10
AC power input
socket
Used to connect AC power to start instrument.
1.6 Home-Screen Overview
IT7800 series power supply adopts touch screen design, the users can easily
operation by touch screen.
The power supply can work in either single-phase mode or three-phase mode.
The working mode can be set in the system menu. The display interface of the
instrument is different under different modes.

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Copyright ©ITECH Electronic Co., Ltd. 14
Single Phase Mode
The meter interface of IT7800 series power supply is shown as follow.
Three Phase Mode
The meter interface of IT7800 three phase mode is shown as follow.
The parameters are the same as the single phase.
Under three-phase mode, display total parameters corresponding to Phase A, B
and C, the user can switch screen and view the total parameters of each phase.
Voltage setting&meter value
Frequency setting&meter value
Display area of measuring data
Status bar

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Copyright ©ITECH Electronic Co., Ltd. 15
The meter interface of phase A is shown as follow, the display parameters are
the same as single mode. You can click the A, B or C to switch the phase
interface.
Introduction to Interface Symbols
The interface of IT7800 power supply will display the following symbols. All the
symbols and description are listed in the table below.
Char
Function description
Char
Function description
Shift
Compound key
Output is off
Output is on
Key operation is
locked
Single phase AC mode
Three phase AC mode
Single phase DC mode
Three phase AC+DC
mode
Split phase AC mode
Split phase AC mode
Split phase AC+DC mode
Split phase DC+AC
mode
Single phase DC+AC
mode
Single phase AC+DC
mode
Multi-channel AC mode
Multi-channel AC+DC
mode
Multi-channel DC mode
Multi-channel DC+AC
mode
The AC source is in
remote mode
Surge&Sag function
indicator
External Simulation Test
Function
Record log
LIST is running
LIST is finished
LIST function is waiting for
trigger
Sweep function is
waiting for trigger

Quick Reference
Copyright ©ITECH Electronic Co., Ltd. 16
Char
Function description
Char
Function description
Sweep running indicator
Found USB disk
Sense indicator
Sense Error
Over voltage protection
Over temperature
protection
AC/AC+DC mode
Peak OCP
AC/AC+DC mode
RMS OCP
Over power protection
Fiber is error
SYNC unlock
SYNC lock
1.7 Optional accessories
The IT7800 series supports the following optional accessories (sold separately),
the details are as below:
The interface expansion slot provided on the rear panel of the IT7800 series
instrument allows users to flexibly expand according to their needs. Different
interface cards can be selected to achieve different functions.
The following optional accessories from ITECH are sold separately. Users need
to purchase separately.
Device Name
Model
Description
GPIB
communication
interface
IT-E176
When the user needs to use GPIB
interface to enable remote operation, this
option is the right choice.
RS232+Analog
IT-E177
Interface card that includes RS-232
communication interface and external
analog. When the user needs to use RS-
232 or external analog interface to enable
remote operation, this option is the right
choice.
Fiber optic
modules and
cables
IT-E168
Used for parallel connection between the
units in a cabinet, including one fiber
module and two fiber cables, with lengths
of 1.5 meters and 0.3 meters.
The fiber optic module and cable are the
necessary accessories for the parallel
connection. Different numbers of fiber
optic modules and cables are used in
different numbers of parallels.

Quick Reference
Copyright ©ITECH Electronic Co., Ltd. 17
Device Name
Model
Description
Fiber optic
modules and
cables
IT-E169
Used for parallel connection between
cabinets, including one fiber module and
one 2.5m fiber cable.
The fiber optic module and cable are the
necessary accessories for the parallel
connection. Different numbers of fiber
optic modules and cables are used in
different numbers of parallels.

Inspection and Installation
Copyright ©ITECH Electronic Co., Ltd. 18
Chapter2 Inspection and Installation
2.1 Verifying the Shipment
Open the package and check the articles within package box before operation.
In case of any non-conformity, missing or appearance wearing, please contact
ITECH immediately.
The package box should comprise:
Device name
Quantity
Model
Remarks
Programmable
AC Power
Supply
x1
IT7800
series
For the specific models included in this
series, refer to 1.1 Brief Introduction.
Power Cord
X1
-
Number of the power cords vary
depending on the model, See the
Section 2.3 Connectiong the Power
Cord for power cord connection.
USB cable
x1
-
-
Factory
alignment
report
x1
-
Test report before delivery
NOTE
After confirming that package contents are consistent and correct, please appropriately
keep package box and related contents. The package requirements should be met when
the instrument is returned to factory for repair.
2.2 Instrument Size Introduction
The instrument should be installed at well-ventilated and rational-sized space.
Please select appropriate space for installation based on the power supply size.
IT7815-350-90 model