AEC IST710kVA User manual

User Manual
AEC UPS IST7, The NEW high-frequency Three-Phase
(10kVA-30kVA)

AEC UPS IST7 10-30 kVA
User Manual
Foreword
i
Foreword
Summaries
Thank you for choosing ourAEC UPS !
This document gives a description of the 10kVA-30kVA UPS, including the features, performance,
appearance, structure, working principles, installation, operation and maintenance. etc.
Please save the manual after reading, in order to consult in the future.
The figures in this manual are just for reference, for details please see the actual product.
Symbol Conventions
The manual quotes the safety symbols, these symbols used to prompt users to comply with safety
matters during installation, operation and maintenance. Safety symbol meaning as follows.
Symbol
Description
Alerts you to a high risk hazard that could, if not avoided, result in
serious injury or death.
Alerts you to a medium or low risk hazard that could, if not avoided,
result in moderate or minor injury.
Alerts you to a potentially hazardous situation that could, if not avoided,
result in equipment damage, data loss, performance deterioration, or
unanticipated results.
Anti-static prompting.
Be care electric shock prompting.
Provides a tip that may help you solve a problem or save time.
Provides additional information to emphasize or supplement important
points in the main text.

Foreword
AEC UPS IST7 10-30 KVA
User Manual
Contents
1 Safety Instructions ........................................................................................................................1
1.1 Safety Announcements.....................................................................................................................................1
1.1.1 Safety Instructions ..................................................................................................................................1
1.1.2 Use Announcements for Battery .............................................................................................................4
1.1.3 Anti-Static Protection..............................................................................................................................4
1.1.4 Grounding Requirements........................................................................................................................5
1.1.5 Safety Warning Label Setting .................................................................................................................5
1.1.6 Measure with Electricity.........................................................................................................................5
1.2 Operation and Maintenance Requirements ......................................................................................................6
1.3 Environment Requirements..............................................................................................................................7
2 Overview.........................................................................................................................................8
2.1 Product Intro.....................................................................................................................................................8
2.1.1 Product Features......................................................................................................................................8
2.2 Work Principle..................................................................................................................................................9
2.2.1 Work Principle Diagram..........................................................................................................................9
2.2.2 Work Mode ...........................................................................................................................................10
2.3 Appearance and Structure............................................................................................................................... 11
2.3.1 Appearance............................................................................................................................................11
2.3.2 Structure Layout (Open Door)..............................................................................................................14
2.3.3 Alarm Function .....................................................................................................................................18
3 Installation....................................................................................................................................22
3.1 Installation Procedure.....................................................................................................................................22
3.2 Installation Preparation ..................................................................................................................................23
3.2.1 Installation Tools...................................................................................................................................23
3.2.2 Installation Environment.......................................................................................................................24
3.2.3 Installation Space..................................................................................................................................25
3.2.4 Selection of Input and Output Wires.....................................................................................................26

AEC UPS IST7 10-30 kVA
User Manual
Foreword
iii
3.2.5 Surge ProtectionDevice.........................................................................................................................27
3.2.6 Reverse Feedback Protection (Optional)...............................................................................................28
3.3 Transportation and Unpacking .......................................................................................................................28
3.3.1 Transportation.......................................................................................................................................28
3.3.2 Unpacking.............................................................................................................................................29
3.4 Mechanical Installation ..................................................................................................................................31
3.4.1 UPS Installation ....................................................................................................................................31
3.4.2 Wiring ...................................................................................................................................................33
3.4.3 Install Battery Cabinet ..........................................................................................................................38
3.5 System Check and Test...................................................................................................................................39
3.5.1 Check Electrical Connection.................................................................................................................39
3.5.2 UPS Test................................................................................................................................................40
3.5.3 Connect Load........................................................................................................................................40
4 Touch Screen Operation and Setting ......................................................................................41
4.1 Menu Hierarchy .............................................................................................................................................41
4.2 MainPage .......................................................................................................................................................42
4.3 System Work Status Display ..........................................................................................................................43
4.4 Monitor Function ...........................................................................................................................................47
4.4.1 Bypas Input Information.......................................................................................................................47
4.4.2 Mains Information ................................................................................................................................48
4.4.3 Battery Information...............................................................................................................................48
4.4.4 System Output Information Page..........................................................................................................49
4.5 Information Query..........................................................................................................................................50
4.5.1 Event Log..............................................................................................................................................50
4.5.2 User Log ...............................................................................................................................................51
4.5.3 Device Information ...............................................................................................................................51
4.6 Setting Management.......................................................................................................................................52
4.6.1 System Management.............................................................................................................................53
4.6.2 Battery Management.............................................................................................................................56
4.6.3 Battery Test...........................................................................................................................................59

Foreword
AEC UPS IST7 10-30 KVA
User Manual
4.6.4 Function Configuration.........................................................................................................................59
4.6.5 HMI Setting ..........................................................................................................................................60
4.6.6 Password Setting...................................................................................................................................61
4.7 Buzzer Control ...............................................................................................................................................61
4.8 ON/OFF .........................................................................................................................................................61
5 Use and Operation ......................................................................................................................63
5.1 Use Announcements.......................................................................................................................................63
5.2 Operation Procedure.......................................................................................................................................63
5.3 UPS Start and Shutdown................................................................................................................................64
5.3.1 Check before Startup.............................................................................................................................64
5.3.2 Startup...................................................................................................................................................64
5.3.3 UPS Shutdown......................................................................................................................................66
5.3.4 Switch to Bypass Mode Manually ........................................................................................................66
5.3.5 Switch to Maintenance Bypass Mode From Inverter Output................................................................67
5.3.6 Switch to Inverter Output from Maintenance Bypass ...........................................................................68
5.3.7 Emergency Power Off (EPO)................................................................................................................68
5.3.8 Emergency Power Off Recovery...........................................................................................................69
5.4 Parallel SystemStartup and Shutdown ...........................................................................................................69
5.4.1 Start Parallel System.............................................................................................................................69
5.4.2 Shutdown Parallel System ....................................................................................................................72
5.4.3 Emergency Power Off (EPO)................................................................................................................72
6 Maintenance and Troubleshooting .........................................................................................74
6.1 Maintenance Guide ........................................................................................................................................74
6.1.1 Safety Precautions.................................................................................................................................74
6.1.2 Preventive Maintenance........................................................................................................................74
6.2 Battery Maintenance ......................................................................................................................................75
6.3 Announcementsfor Battery Replacement.......................................................................................................75
6.4 Troubleshooting..............................................................................................................................................76
6.4.1 Common Abnormal Phenomena Diagnosis ..........................................................................................76
6.4.2 Emergency Dispose for System Fault...................................................................................................78

AEC UPS IST7 10-30 kVA
User Manual
Foreword
v
7 Package, Transportation and Storage......................................................................................79
7.1 Package ..........................................................................................................................................................79
7.2 Transportation ................................................................................................................................................79
7.3 Storage ...........................................................................................................................................................79
A Technical Specifications...........................................................................................................80
B Acronyms and Abbreviations ..................................................................................................84

AEC UPS IST7 10-30 kVA
User Manual
2 Overview
1
1 Safety Instructions
This chapter introduces the safety announcements. Prior to performing any work on the UPS, please
read the user manual carefully to avoid human injury and device damage by irregular operations.
1.1 Safety Announcements
This section introduces the safety announcements that must be complied with and pay special attention
while installing, using, maintenance and other relative operations.
Before operating, please read the announcements and operation instructions in this section carefully,
which is to avoid accident.
The DANGER, WARNING, CAUTION in the manual are not all the safety announcements that you
must abide by, there are just the supplements for the safety announcements during operating.
Our company does not undertake the responsibility caused by violating common safety operation
requirements or the safety standard of design, manufacture and use.
1.1.1 Safety Instructions
The input and output of the UPS is dangerous high voltage, once operate improperly, it may danger
human safety. Please read this manual carefully before installing or operating, and pay attention to the
warning labels. Do not dismantle the case of the UPS unless authorized person.

2 Overview
AEC UPS IST7 10-30 KVA
User Manual
2
It is prohibited to touching any terminal or conductor that connected with grid circuit, or, it may cause
deadly danger.
The damaged device or device fault may cause electric shock or firing!
Before operating, please inspect the device and see if there is any damage or exist other danger.
Check if the external devices or circuit connection is safe.
During a lightning storm, it is strictly prohibited to perform high voltage and AC operation, as well as
in the tower or the mast. The atmosphere will generate a strong electromagnetic field in a lightning
storm. Therefore, in order to avoid equipment struck by lightning, lightning protection and grounding
system should be prepared in time.
If the output load is impact feedback device, please consult the engineer of our company.
Do not reversely connect the ground wire and neutral wire, live wire and neutral wire, which will cause
short circuit.
It should be well grounded and the voltage between ground wire and neutral wire should be less than
5V.

AEC UPS IST7 10-30 kVA
User Manual
2 Overview
3
Please do not put finger or tool into rotating fans to avoid endanger the human safety or damage the
device.
In case of fire, please use dry power fire extinguisher. If using liquid fire extinguisher, it may cause
electric shock.
No liquid or other objects are allowed to enter the cabinet.
The product is class C3 device. If the product is used in resident living, it may cause wireless
interference. User should take actions to avoid the interference.
Warning label should be affixed away from UPS location!
When UPS is power off, there still exists dangerous voltage. It should affix warning labels away from
UPS location and the warning labels should include: 1. It supplies power for UPS. 2. Please disconnect
UPS before wiring.
1.1.2 Use Announcements for Battery
Please use specified battery. Non-specified battery will damage the UPS.

2 Overview
AEC UPS IST7 10-30 KVA
User Manual
4
The charging voltage of different brand and different model battery is different. Before using, ensure
that the charging voltage of the UPS matches that of battery. If doubted, please consult the manufacturer
for support.
Battery operation must be done according to instructions!
Battery operation must be done according to instructions, especially battery wiring. Irregular operation
will cause battery damage, even human injury.
It is prohibited to short circuit the anode and cathode of the battery. The battery wiring must be
tightened. It is strictly prohibited to touch any two wiring terminals of battery or the bare
terminals of wires simultaneously, or it may cause battery damage or human injury.
Prevent electrolyte leaking from batteries. The metal objects and circuit board will be corroded
by the overflowing electrolyte and it will result in equipment damage and circuit board short
circuit.
Keep the battery away from fire source and all device that easy cause spark to avoid danger or
unnecessary lose.
1.1.3 Anti-Static Protection
The static generated by human bodies may damage the electrostatic-sensitive components on PCB.
Before touching the sensitive component, please wear anti-static rings and well connect the other end
of the anti-static rings to ground.
1.1.4 Grounding Requirements
High leakage risk! The device must be grounded before electrical connection. The grounding terminal
must be connected to earth.
When installing, connect the grounding wire first; when dismantling, the grounding wire must be
removed at last.

AEC UPS IST7 10-30 kVA
User Manual
2 Overview
5
It is prohibited to damage the grounding conductor.
The device must be connected with protection earthing permanently. Before operating, please
check the electric connection and ensure the device has been connected to earth reliably.
1.1.5 Safety Warning Label Setting
To avoid irrelevant person close to or misoperate the UPS, during installation or daily maintenance,
please comply with the related standards.
Set warning labels at the switches of input end and output end to avoid wrongly close and even
cause accident.
Set warning label or safety warning area to avoid irrelevant person entering and cause human
injury or device damage.
After maintenance, ensure that pull out the key of the UPS and save it properly.
1.1.6 Measure with Electricity
There is dangerous high voltage, contacting by accident may lead to deadly danger. So, when measure
with electricity, it is necessary to do the protection (such as wear insulated gloves, etc.)
The measure meter must accord with the following requirements.
The range and use condition of the measure meter should conform to the site requirements.
Ensure that connection of the measure meter is proper and normative, which is to avoid the
danger of electric arc, etc.
1.2 Operation and Maintenance Requirements
There exists high temperature and high voltage inside the UPS. Please comply with the relevant safety
regulations and operation procedures during installation, operation and maintenance to avoid human
injury or device damage. The safety precautions mentioned in the user manual is just as a supplement
to the local safety regulations. Our company does not undertake the responsibility caused by violating
the common safety operation requirements or safety standards for design, manufacture and use the
device.

2 Overview
AEC UPS IST7 10-30 KVA
User Manual
6
The related operation and wiring for the UPS should be performed by qualified professionals, and
ensure the electric installation accord with the electricity installation standards.
The installation and maintenance man should be trained and know each safety announcements and get
the right operation method, and then, the installation, operation and maintenance can be done.
Mounting and dismantling power cables is prohibited when power on. Please switch off the power
switches before mounting or dismantling power cables. Before connecting, make sure the cable
connection, cable labels are in accordance with the actual installation.
Touching high voltage directly or through damp objects will lead to lethal risk.
Only authorized professionals are allowed to open the UPS chassis! The input and output of UPS
are dangerous high voltage. Touching high voltage will lead to lethal risk.
Before maintenance, please disconnect the AC power and battery to isolate the power input. It is
better to measure the input, output and battery terminal bars by a voltmeter to ensure the input
power is disconnected and in a safe condition.
Even if all external power are disconnected, there still exists residual electric charge on the
capacitance inside the UPS, and the output terminal bars may exists high voltage which
endangers human life. It is necessary to set the UPS aside for enough time (≥10 min) to release
all charge before opening the UPS chassis.
The battery cables are not isolated with AC input. There may exist dangerous voltage between
battery terminal and grounding terminal. Pay attention to the insulation when installing and using
the battery.
Do not wear conductive objects, such as watches, bracelets and rings during operating.
The installing man should have the qualification of high voltage andAC power operation. The
maintenance and repair for the power system only can be done by professional persons.
Leakage risk! Before performing electrical connection, the UPS should be grounded. The ground
terminal must be connected to the ground.

AEC UPS IST7 10-30 kVA
User Manual
2 Overview
7
Drilling holes on the cabinet is prohibited! Inappropriate drilling will damage the components inside
the UPS. Metal debris generated by drilling will lead to circuit board short circuit.
Changing the UPS configuration, structure or assembly will affect the performance of the UPS. If user
needs to do like this, please consult the manufacturer in advance.
1.3 Environment Requirements
The used environment may influence the service life and reliability of the device. So, please avoid
using the device in the following environment for long time.
The place where beyond the specification (normal work temperature: -5℃～40℃, relative
humidity: 0%-95%).
The place where has direct sunshine and rain.
The place where has vibration or easy impacted.
The place where has dust, corrosive material, salty or flammable gas.
The place where without good ventilation or closed.

2 Overview
AEC UPS IST7 10-30 KVA
User Manual
8
2 Overview
This chapter mainly introduces the use scope, product feature, work principle and modes, appearance
and layout, alarm list etc. of the UPS.
2.1 Product Intro
The AEC IST7 UPS product is the high-frequency online double-conversion UPS. It is the high
performance sine-wave UPS that special designed for the network computer room, precision
instrument, etc. of financial, communication, insurance, transportation, tax, army, security, energy,
education, government, enterprise, etc.
2.1.1 Product Features
Three-level inversion technology
Adopts three-level inversion technology, which makes the quality of output voltage wave better and
the efficiency of whole UPS higher.
Completely digitalized DSP control
Adopts digitalized DSP to control the inverting, phase synchronization, output current-sharing, logic
of the power unit, which is with high precision, high speed and perfect whole system performance.
Energy conservation and high efficiency
Adopts advanced PFC control technology, the input power factor is greater than 0.99, which greatly
improves the use ratio of electric energyand reduces the load of power grid, and save the cost of power
distribution. The size of whole UPS is small, and the weight is light, calorific value is small, which
enhances the use ratio of environment and decrease the investment cost.
Smart fan speed control
The fan speed is adjusted automatically in accordance with the load status, which prolong fan life and
reduce noise.
ECO energy conservation mode design
The UPS is designed with ECO energy conservation mode. When the user power grid is good, if the
UPS operating in this mode, the bypass prior to output, and the efficiencycan be 99%.When the bypass

AEC UPS IST7 10-30 kVA
User Manual
2 Overview
9
voltage or frequency out of normal range and cannot satisfy the user’s power supply requirement, it
will switch to inverter output, and this guarantee the reliability of power supply and also, save energy.
Manual maintenance bypass design
It designs manual maintenance bypass channel to ensure the UPS supply power for load while
maintenance, which greatly improve the system operation reliability and maintainability.
Reliable EMC performance
Pass the authority institution and professional test on EMC, including conducting disturbance,
radioactive disturbance, conducting anti-disturbance, radioactive anti-disturbance, power falling, mass
impulse, static discharging, surge, etc. The excellent EMC characteristics can completely filter each
power grid interference, and also, decrease and eliminate the interference of UPS itself effectively.
4.3 inch touch screen display
With 4.3 inch touch screen display, the operation is simple and convenient, which is convenient to daily
manage and maintain the UPS. It can display the running parameters and running status of UPS and
each power unit, and record the history event and alarm information. It can store 10000 pieces of
information at most.
2.2 Work Principle
2.2.1 Work Principle Diagram
AC
DC
DC
AC
DC
DC
Maintenance bypass
Bypass input
Mains input
Battery input
Bypass unit
Power unit
Output
Figure1.1 Work principle diagram
2.2.2 Work Mode
There are 4 work modes of the UPS: normal mains mode, battery mode, bypass mode and maintenance
bypass mode.

2 Overview
AEC UPS IST7 10-30 KVA
User Manual
10
Normal mains mode
When the mains normal, AC power is transformed to DC power by PFC, and supply power forinverter.
While rectifying the AC power into DC power, the rectifier eliminates the abnormal noise wave, noise
and unstable frequency, and make the inverter provide stable and clean power for load. The specific
work process is as follows.
When mains normal, the rectifier, inside the power unit, rectify the mains into anode and cathode DC
voltage, and store energy in DC electrolysis for inverter to use. The inverter absorbs energy from DC
electrolysis and inverts to output stable 220Vac voltage. When the system control card detects the
inverter normal, it will supply the inverting voltage to load.
Battery mode
When mains abnormal, system will switch to battery input, the Boost circuit promotes the battery
voltage to a certain value and then supply the DC power to the inverter, that makes the AC output
without interruption phenomenon and then protect the load. The specific work process is as follows.
When mains abnormal at any time, the rectifier will switch to battery input immediately to maintain
the voltage of DC electrolysis, which guarantee the inverter without power down. Before battery
discharge completely, if mains recovers, the rectifier will switch to mains input and charge battery at
the same time. During the switch between grid power supply and battery power supply, the inverter
output cannot power down.
In battery power supply mode, if mains does not recover normal all the time, and the battery energy is
running out, the UPS will send sound & light alarm, and stop working at the max. discharge point, and
long beeps to alarm.At that time, the load will power down.
Bypass mode
When system abnormal (such as over-temperature, short-circuit, output voltage abnormal or overload)
and exceed the bear range, the inverter will shut down to avoid damage automatically. If mains still
normal at this time, it will turn to bypass to supply power for load. The specific work process is as
follows.
If the inverter circuit fault or inverter overload and exceed the bear range, the UPS will turn to bypass
to output. During bypass power supply, if fault or overload removed, the UPS will start inverter and
begin to supply power for load. When the load is serious overload and exceeds the bypass bear range,
the UPS will close the bypass output, and it will cause user load power down. When load fault or short
circuit, the UPS will switch to bypass to supply power from inverter. If the short-circuit is serious, the
UPS input breaker and bypass breaker may trip out. After suffering the short-circuit fault, UPS will try

AEC UPS IST7 10-30 kVA
User Manual
2 Overview
11
to restart. If the short-circuit is removed, the UPS will switch to inverter; if the fault is not removed,
the UPS will try to restart for 5 times. 5 times later, the UPS will turn to fault protection. At this time,
it needs to power off or press the touch screen to shut down the UPS, and restart the UPS, and then, it
will recover normal work.
Maintenance bypass mode
When the UPS needs to be maintained and the power supply for load cannot be interrupted, user can
shut down the inverter and make the UPS works in bypass status, then switch on the maintenance
bypass breaker and switch off the mains pint breaker and bypass power supply breaker. During the
transforming of manual maintenance bypass, AC power is supplied for load by maintenance bypass
breaker. At this time, the inner UPS has no electricity, maintainer can perform the maintenance safely.
2.3 Appearance and Structure
2.3.1 Appearance
The appearance of this seriesUPS is as shown in Figure1.1, Errore. L'origine riferimento non è stata
trovata., Errore. L'origine riferimento non è stata trovata..
Figure1.1 Appearance of 10kVA-30kVA

2 Overview
AEC UPS IST7 10-30 KVA
User Manual
12
Operation panel
Figure1.1 Operation panel
Table1.1 Illustration for the operation panel
NO.
Name
Illustration
○
Touch screen
Shows the running parameters (such as voltage, current, load,
etc.) and status
○
AC/DC indicator
On (green): rectifier works normally.
On (red): rectifier abnormal.
○
DC/AC indicator
On (green): inverter works normally.
On (red): inverter abnormal.
○
BYP. indicator
On (green): bypass output.
On (red): bypass abnormal.
○
BATT. LOW indicator
On (red): battery is low-voltage.
○
OVERLOAD indicator
On (red): output is overload.
○
“ON”combination button
Press the two buttons for 3s, the system will power on.
○
“OFF”combination button
Press the two buttons for 3s, the system will power off.
○
EPO emergency power off
Press the button, the system will power outage immediately.