I-Tech IT7900P Series User manual

Programmable AC Power
Supply
IT7900P Series User Manual
Model: IT7900P
Version: V1.0/2022.08

Notices
© Itech Electronic, Co., Ltd. 2022
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
IT7900P
Revision
1st Edition: JUL. 8, 2022.
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.

IT7900P User Manual
Copyright ©ITECH Electronic Co., Ltd. i
Quality Certification and Assurance
We certify that IT7900P 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

IT7900P 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 (grounding) conductor or

IT7900P User Manual
Copyright ©ITECH Electronic Co., Ltd. iii
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.

IT7900P User Manual
Copyright ©ITECH Electronic Co., Ltd. iv
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.
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.

IT7900P 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

Overview
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 Overview........................................................................................................................................ 9
1.1 Brief Introduction.................................................................................................................................................9
1.2 Models and Options.............................................................................................................................................9
1.3 Optional accessories ..........................................................................................................................................10
1.4 Instrument Size Introduction .............................................................................................................................11
Chapter2 Instrument Introduction............................................................................................................... 17
2.1 Unpacking and Transportation...........................................................................................................................17
2.2 Verifying the Shipment.......................................................................................................................................18
2.3 Front Panel .........................................................................................................................................................19
2.4 Keyboard ............................................................................................................................................................19
2.5 Push-on Knob .....................................................................................................................................................21
2.6 Rear Panel ..........................................................................................................................................................21
Chapter3 Installation ................................................................................................................................... 24
3.1 Connectiong the Power Cord .............................................................................................................................24
3.2 Connecting Test Lines ( Optional).......................................................................................................................27
3.3 Installing Fiber Cables (Only for IT7930P-350-180) ............................................................................................32
Chapter4 Getting Started............................................................................................................................. 33
4.1 Power-on the Instrument...................................................................................................................................33
4.2 Home-Screen Overview .....................................................................................................................................34
4.3 Touch Screen Introduction .................................................................................................................................37
4.4 Set output parameters .......................................................................................................................................38
4.5 Output On/Off Control.......................................................................................................................................38
Chapter5 Source Mode Operation ............................................................................................................... 40
5.1 full 4-Quadrant output character.......................................................................................................................40
5.2 Select the Power Supply Mode ..........................................................................................................................40
5.3 Select the Output Mode.....................................................................................................................................41
5.3.1 AC Output Mode .........................................................................................................................................41
5.3.2 DC Output Mode .........................................................................................................................................42
5.3.3 AC+DC Mode ...............................................................................................................................................43
5.3.4 DC+AC Mode ...............................................................................................................................................43
5.4 Current Limit Mode and Power Limit Mode ......................................................................................................44
5.5 Protection Function............................................................................................................................................44
5.5.1 Current RMS Protection ..............................................................................................................................45
5.5.2 Set the Current Peak protection ..................................................................................................................46
5.5.3 Set Voltage/Current/Power Limit Range .....................................................................................................46
5.5.4 Over-temperature protection (OTP) ............................................................................................................47
5.5.5 Over-power protection (OPP)......................................................................................................................47
5.6 Professional Anti-islanding Test Mode ...............................................................................................................47
5.7 Waveform Selection ...........................................................................................................................................48
5.8 Full 4-Quadrant Power Amplifier .......................................................................................................................49
5.9 Auto-range Function ..........................................................................................................................................49
5.10 Programmable Output Impedance ..................................................................................................................50
5.11 Sweep Function................................................................................................................................................50

Overview
Copyright ©ITECH Electronic Co., Ltd. 7
5.12 List Function .....................................................................................................................................................52
5.12.1 Create a new List file ............................................................................................................................52
5.12.2 Select/Run List File ....................................................................................................................................54
5.12.3 Import/Export List file ...............................................................................................................................55
5.13 Setting of Surge/Sag Configuration ..................................................................................................................55
5.14 Self-defined Waveform Function .....................................................................................................................57
5.14.1 THD .........................................................................................................................................................57
5.14.2 Selfdefined .............................................................................................................................................59
5.15 Voltage Sampling..............................................................................................................................................60
5.16 Voltage Signals Simulation ...............................................................................................................................62
5.17 Polyphase Function ..........................................................................................................................................64
5.17.1 Connecting the DUT ..................................................................................................................................64
5.17.2 Connecting the System Bus Method..........................................................................................................64
5.17.3 Connecting Digital I/O Method .................................................................................................................66
5.18 Standard IEC Regulations .................................................................................................................................68
Chapter6 Operation and Application ........................................................................................................... 71
6.1 Select Phase .......................................................................................................................................................71
6.2 Select the Input Mode........................................................................................................................................71
6.2.1 AC Input Mode ............................................................................................................................................72
6.2.2 DC Input Mode ............................................................................................................................................72
6.3 AC Load Function ...............................................................................................................................................72
6.3.1 Constant Current Mode (CC) .......................................................................................................................72
6.3.2 Constant Resistance Mode (CR) ..................................................................................................................74
6.3.3 Constant Power Mode (CP) .........................................................................................................................75
6.3.4 Constant Apparent Power Mode (CS)..........................................................................................................76
6.3.5 Constant Current +Constant Resistance (CC+CR) ........................................................................................78
6.3.6 Circuit Emulation (CE) .................................................................................................................................79
6.4 DC Load Function ...............................................................................................................................................80
6.4.1 Constant Current Mode (CC) .......................................................................................................................81
6.4.2 Constant Resistance Mode (CR) ..................................................................................................................81
6.4.3 Constant Voltage Mode (CV) .......................................................................................................................81
6.4.4 Constant Power Mode (CP) .........................................................................................................................81
6.4.5 Complex Operation Mode ...........................................................................................................................82
6.5 Rectified Mode...................................................................................................................................................84
6.6 Waveform Selection ...........................................................................................................................................87
6.7 C Phase Loss .......................................................................................................................................................88
6.8 Three-phase unbalance simulation....................................................................................................................88
6.9 Load angle and unload angle control .................................................................................................................88
6.10 Sweep Function................................................................................................................................................89
6.11 Synchronization Function.................................................................................................................................91
6.12 List Function .....................................................................................................................................................92
6.12.1 Create a new List file ............................................................................................................................92
6.12.2 Select/Run List File ....................................................................................................................................95
6.12.3 Import/Export List file ...............................................................................................................................95
6.13 Setting of Surge/Sag Configuration ..................................................................................................................96
6.14 Self-defined Waveform Function .....................................................................................................................98
6.14.1 THD .........................................................................................................................................................98
6.14.2 Selfdefined .............................................................................................................................................99
Chapter7 System-Related Functions .......................................................................................................... 101
7.1 System Menu Reference ..................................................................................................................................101
7.1.1 Menu function...........................................................................................................................................107
7.1.2 Set the communication interface ..............................................................................................................109
7.1.3 View the System Information ....................................................................................................................109
7.2 Configuration Menu Reference ........................................................................................................................109
7.3 Key Lock Function.............................................................................................................................................112
7.4 Switching Local/Remote Mode ........................................................................................................................112
7.5 Save and Recall Operations ..............................................................................................................................113

Overview
Copyright ©ITECH Electronic Co., Ltd. 8
7.6 Screen Capture Function..................................................................................................................................114
7.7 Trigger Function ...............................................................................................................................................114
7.8 Query the System Log ......................................................................................................................................114
7.9 Query the Energy .............................................................................................................................................114
7.10 Set Parallel Operation Mode ..........................................................................................................................114
7.11 Remote Measurement Function ....................................................................................................................120
7.12 Digital I/O Function ........................................................................................................................................120
7.13 Analogue Function (Ext-Program) (Optional) .................................................................................................123
Chapter8 Measurement Functions............................................................................................................. 127
8.1 Meter Mode .....................................................................................................................................................127
8.2 Oscilloscope Mode ...........................................................................................................................................128
8.3 Harmonic measurement ..................................................................................................................................130
8.4 Recorder Function ............................................................................................................................................132
Chapter9 Technical Specifications .............................................................................................................. 133
9.1 Main technical parameters ..............................................................................................................................133
IT7915P-350-90..................................................................................................................................................133
9.2 Supplemental characteristics ...........................................................................................................................138
Chapter10 Remote Control ...................................................................................................................... 139
10.1 USB Interface..................................................................................................................................................139
10.2 LAN Interface..................................................................................................................................................139
10.3 CAN Interface .................................................................................................................................................142
10.4 GPIB Interface (Optional) ...............................................................................................................................143
10.5 RS–232 Interface (Optional) ...........................................................................................................................144
10.6 Commonly Used Commands Overview..........................................................................................................145
10.7 Demo Software Introduction .........................................................................................................................146
Appendix............................................................................................................................................................ 147
Specifications of Red and Black Test Lines .............................................................................................................147

Overview
Copyright ©ITECH Electronic Co., Ltd. 9
Chapter1 Overview
This chapter introduces the front panel, the rear panel, key functions and LCD
display function of the IT7900P 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 IT7900P series represents a new generation of programmable, full power
source and sink 4-Quadrant grid simulators and also can perform as a 4-
Quadrant power amplifier, providing the flexibility to test widest range of grid-tied
devices, including PCS, energy storage systems, micro grids, BOBC (V2X) and
power-related hardware in the loop emulation (PHiL).
The IT7900P series is equipped with a professional anti-islanding test mode,
allowing the user to set R, L, C and active and reactive power parameters to
simulate non-linear loads on the grid and achieve anti- islanding testing
requirement. The IT7900P series supports energy recovery function that
provides 100% current absorption and feeds back into local grid through the
device, saving electricity bills and heat dissipation costs.
ITECH IT7900P Regenerative Grid Simulator adopts high power density design
of 15kVA in 3U enclosure and provides wide voltage ranges up to 350V L-N.
Easily expandable by Master-slave parallel configuration for higher power up to
960kVA. Comprehensive options of operating modes can meet users'
requirements for single-phase, three-phase, reversed-phase and multi-channel
testing requirements. Extended AC voltage range to 700V L-N enabled by
reversed mode. The powerful arbitrary waveform editing function can simulate
a variety of grid disturbance waveforms, which is an ideal solution for testing and
R&D laboratories.
1.2 Models and Options
Model
Power
Voltage
Current
Phase
IT7905P-350-30U
5kVA
350V
30A
1Φ
IT7906P-350-90
6kVA
350V
90A
1Φ or 3Φ
IT7909P-350-90
9kVA
350V
90A
1Φ or 3Φ

Overview
Copyright ©ITECH Electronic Co., Ltd. 10
Model
Power
Voltage
Current
Phase
IT7912P-350-90
12kVA
350V
90A
1Φ or 3Φ
IT7915P-350-90
15kVA
350V
90A
1Φ or 3Φ
IT7930P-350-180
30kVA
350V
180A
1Φ or 3Φ
IT7945P-350-270
45kVA
350V
270A
1Φ or 3Φ
IT7960P-350-360
60kVA
350V
360A
1Φ or 3Φ
IT7975P-350-450
75kVA
350V
450A
1Φ or 3Φ
IT7990P-350-540
90kVA
350V
540A
1Φ or 3Φ
IT79105P-350-630
105kVA
350V
630A
1Φ or 3Φ
IT79120P-350-720
120kVA
350V
720A
1Φ or 3Φ
IT79135P-350-810
135kVA
350V
810A
1Φ or 3Φ
IT79150P-350-900
150kVA
350V
900A
1Φ or 3Φ
IT79165P-350-990
165kVA
350V
990A
1Φ or 3Φ
Note
Naming rules for this series of model are as follows: IT79XXX-YYY-ZZZ,
wherein, XXX means rated power, YYY means rated voltage, and ZZZ
means rated current. Take IT7915P-350-90 for an example, the rated
power is 15kVA, rated voltage is 350V and rated current is 90A.
1.3 Optional accessories
The IT7900P series supports the following optional accessories (sold
separately), the details are as below:
The interface expansion slot provided on the rear panel of the IT7900P 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.

Overview
Copyright ©ITECH Electronic Co., Ltd. 11
Device Name
Model
Description
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.
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.
1.4 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.
IT7905P-350-30U/IT7906P-350-90/IT7909P-350-90/IT7912P-350-90/IT7915P-350-90 Model

Overview
Copyright ©ITECH Electronic Co., Ltd. 12
IT7930P-350-180 Model

Overview
Copyright ©ITECH Electronic Co., Ltd. 13
IT7945P-350-270 Model

Overview
Copyright ©ITECH Electronic Co., Ltd. 14

Overview
Copyright ©ITECH Electronic Co., Ltd. 15
IT7960P-350-360/IT7975P-350-450/IT7990P-350-540/IT79105P-350-630 Model

Overview
Copyright ©ITECH Electronic Co., Ltd. 16
IT79120P-350-720/IT79135P-350-810/IT79150P-350-900/IT79165P-350-990 Model

Instrument Introduction
Copyright ©ITECH Electronic Co., Ltd. 17
Chapter2 Instrument Introduction
2.1 Unpacking and Transportation
Unpacking
For cabinet products, they are packaged in wooden boxes at the factory. After
you receive them, please refer to the unpacking instructions provided with the
box for disassembly; for products packaged in cartons, please use appropriate
tools for unpacking.
It is recommended to keep the complete transport packaging for the lifetime of
the device for relocation or return to the manufacture for repair.
Transportation
If you need to transport non-cabinet products, you must pay attention to the fol-
lowing to ensure the safety of equipment and personnel.
⚫Before moving, make sure that the cabinet or stand where the
equipment will be placed has been fixed and meets the load-bear- ing
conditions to avoid tilting and collapsing, causing personnel to be
injured, and equipment broken.
⚫Due to the weight of the product, transport by hand should be avoided
where possible. If unavoidable, carry it with two people and holding
the product shell and not external parts (such as han- dles, electrodes,
knobs, etc.).
⚫When carrying, be prepared to bear the weight to avoid sprains or being
crushed by heavy objects.
⚫Use suitable safety clothing, especially safety shoes, when carrying the
equipment, as due to its weight a fall can have serious consequences.
After unpacking the cabinet product, if you need to move it to other places, you
must pay attention to the following matters to ensure the safety of equipment
and personnel.
⚫The cabinet product is very heavy. Before moving to another loca- tion,
confirm whether the ground load is in compliance.
⚫During the process of moving the cabinet, it is recommended that two
or more people cooperate and push it slowly and at a constant speed.
If you encounter a pit, you need to pay special attention. It is forbidden
to push it quickly, otherwise it will easily cause excessive inertia and
cause the casters at the bottom of the cabinet to jam and the cabinet
to fall.
⚫It is not advisable to push down the slope to prevent the cabinet from
falling down due to the shift of the center of gravity. It is rec- ommended

Instrument Introduction
Copyright ©ITECH Electronic Co., Ltd. 18
to use a forklift or crane to move the cabinet.
⚫ITECH 27U and 37U cabinets are equipped with hoisting rings as
standard on the top. It is recommended to use a crane equipped with
a four-leg hoisting belt structure for horizontal hoisting and moving,
and ensure that the four hoisting belts are the same length to avoid
cabinet skew during movement. As shown below.
⚫After moving to the destination, please lock the four casters to se- cure
the cabinet.
⚫The cabinet should be placed on a level ground. It is forbidden to place
the cabinet on a sloped ground.
2.2 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
IT7900P
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.