AEG IST7 - User Manual

Questions and Answers

J
Jennifer MyersAug 15, 2025
What to do if my AEG UPS has no output when there is no mains?
- S
  Stacy StevensAug 15, 2025
  If your AEG UPS works fine when mains power is available but has no output during a power outage, there could be several reasons: * The battery may be faulty or severely damaged, requiring a check and possible replacement. * There could be a charger fault, which needs to be checked. * Battery wires might not be properly connected, or the contact between the wire and terminal is poor; ensure proper connection of battery wires. * The battery breaker may not be closed; ensure it is closed. * The UPS might be in bypass output status due to a previous serious overload; try restarting the UPS.
M
Matthew SilvaAug 18, 2025
Why is my AEG UPS in bypass status after startup?
- M
  Mary VargasAug 18, 2025
  If your AEG UPS outputs 220V AC power but operates in bypass status after startup, it could be due to the following reasons: * The load might be too large, exceeding the UPS's rated output capacity. In this case, reduce the load or choose a UPS with a larger output capacity. * If the bypass is temporary and caused by the impact of load startup, and it recovers automatically, this is normal and requires no action.
J
jessicadunnAug 21, 2025
Why does my AEG IST7 beep intermittently when mains is on?
- B
  Brenda RodriguezAug 21, 2025
  If your AEG UPS beeps intermittently even when mains power is available, it indicates that the voltage or frequency of the mains supply is outside the UPS's acceptable range. Check the voltage and frequency of the mains to ensure they are within the specified limits.
M
Michael ColemanAug 25, 2025
What to do if AEG IST7 stops outputting when load is turned on?
- J
  jochoaAug 25, 2025
  If your AEG UPS outputs normally after startup but stops outputting immediately when the load is turned on, it could be due to the following: * The UPS may be seriously overloaded, or the output circuit might be short-circuited. Reduce the load to the proper capacity or find the reason for the short-circuit. * The load might not have been started in the correct sequence (from large power device to small power device). Restart the UPS and, after it runs stably, start the load in the correct sequence.
K
Kelsey WilliamsAug 27, 2025
Why does my AEG IST7 UPS show low battery voltage after startup?
- R
  raymauriceAug 27, 2025
  If your AEG UPS buzzer beeps for a long time and the touch screen shows a low battery voltage after startup and running for a while, it means that the mains voltage is too low, causing the UPS to operate in battery inverting status. This eventually leads to the battery undervoltage and triggers undervoltage protection. Check the mains voltage and ensure it is within acceptable levels.
D
Deborah SanchezAug 30, 2025
Why is my AEG UPS on battery when mains is normal?
- S
  Sandra PalmerAug 30, 2025
  If your AEG UPS operates in battery inverting status with intermittent beeping even when the mains is normal, it suggests a poor connection at a point or socket in the grid feed circuit, causing an unblocked AC power supply input. Check the connection points and sockets of the grid feed circuit.
K
Katherine DixonSep 2, 2025
What to do if AEG IST7 UPS shuts down after battery runs out?
- S
  sullivankyleSep 2, 2025
  If your AEG UPS shuts down automatically some time after starting up on battery power due to the battery running out, it indicates that the battery is under-voltage. Once the mains power returns to normal, the system will start and charge the battery automatically. If mains power cannot recover in a long time, disconnect the battery breaker to protect the battery and restart the UPS.
B
Brian FloydSep 5, 2025
Why does AEG IST7 UPS fuse trip after installation?
- E
  Elizabeth BrownSep 5, 2025
  If closing the breaker or switch of the power supply after installation causes the fuse to blow or trip, it indicates that the three-phase input wires are incorrectly connected. For example, the neutral and ground wires, or the live wire and grounding (case), or the three-phase output wires are wrongly connected. Correctly connect the three-phase input and output wires.
L
Luke JohnsonSep 8, 2025
Why does my AEG IST7 load halt after a power outage?
- T
  thomas89Sep 9, 2025
  If your AEG UPS works normally when mains power is available and continues to work normally during a power outage, but the load system halts, it indicates that the grounding is not sufficient, and the float voltage between the neutral wire and grounding wire is too high. Improve the grounding and ensure proper voltage floating.
Y
Yvonne BoydSep 12, 2025
What does it mean when the FAULT indicator is on for AEG UPS?
- R
  Richard MorrisSep 12, 2025
  If the FAULT indicator of a power unit on your AEG UPS is illuminated, it means that the power unit is faulty and needs to be replaced promptly.

Summary

Foreword

Summaries

Provides a summary of the UPS product and manual contents.

Symbol Conventions

Explains the meaning of safety symbols used throughout the manual.

Safety Instructions

Safety Announcements

Safety announcements for installation, use, and maintenance operations.

Safety Instructions

Specific safety instructions for operating the UPS unit.

Use Announcements for Battery

Guidelines for safely using and handling UPS batteries.

Anti-Static Protection

Precautions to prevent damage from static discharge.

Grounding Requirements

Essential grounding procedures for safe UPS operation.

Safety Warning Label Setting

Proper placement of warning labels to ensure user safety.

Measure with Electricity

Safe practices and precautions for electrical measurements.

Operation and Maintenance Requirements

Procedures for safe operation and maintenance of the UPS.

Environment Requirements

Specifies suitable environmental conditions for UPS installation.

Overview

Product Introduction

Introduces the IST7 series UPS and its target applications.

Product Features

Details the key technological features of the IST7 series UPS.

Work Principle

Explains the fundamental operational principles of the UPS system.

Work Principle Diagram

Illustrates the functional block diagram of the UPS operation.

Work Mode

Describes the different operating modes the UPS can function in.

Appearance and Structure

Describes the physical appearance and internal component layout.

Appearance

Shows the external appearance of different UPS models.

Structure Layout (Open Door)

Details the internal component layout when the unit door is open.

Alarm Function

Explains the various alarm functions and status indicators.

Installation

Installation Procedure

Outlines the step-by-step process for installing the UPS.

Installation Preparation

Steps and requirements needed before commencing UPS installation.

Installation Tools

Lists all the necessary tools required for UPS installation.

Installation Environment

Specifies the required environmental conditions for UPS installation.

Installation Space

Details the necessary clearance around the UPS for ventilation.

Selection for Input and Output Wires

Guidance on selecting appropriate wires for input and output connections.

Surge Protection Device

Information regarding the installation of surge protection devices.

Reverse Feedback Protection (Optional)

Optional protection measures against reverse feedback.

Transportation and Unpacking

Instructions for safely transporting and unpacking the UPS unit.

Transportation

Guidelines for the safe transportation of the UPS device.

Unpacking

Step-by-step instructions for unpacking the UPS unit.

Mechanical Installation

Procedures for physically installing and positioning the UPS unit.

UPS Installation

Steps for positioning and securing the UPS unit in its final location.

Wiring

Instructions for connecting input, output, and battery cables.

Install Battery Cabinet

Procedures for installing the external battery cabinet.

System Check and Test

Steps for verifying the installation and testing the UPS functionality.

Check Electrical Connection

Checklist for verifying all electrical connections are secure.

UPS Test

Procedures for performing functional tests on the UPS.

Connect Load

Steps involved in connecting the load to the UPS.

Touch Screen Operation and Setting

Menu Hierarchy

Overview of the touch screen's menu structure and navigation.

MainPage

Description of the main display screen and its icons.

System Work Status Display

Shows various system operating status displays and energy flow.

Monitor Function

How to access and interpret various UPS monitored parameters.

Bypas Input Information

Displays bypass input voltage, current, power, and frequency.

Mains Information

Displays mains input voltage, current, and frequency.

Battery Information

Displays battery voltage, current, capacity, and status.

System Output Information Page

Displays system output voltage, current, active power, and load.

Information Query

Accesses event logs, user logs, and device information.

Event Log

Records history fault and alarm information of the system and unit.

User Log

Records user parameter setting changes made on the UPS.

Device Information

Displays product name, model, and hardware/software versions.

Setting Management

Manages system, bypass, ECO, battery, and HMI settings.

System Management

Configures system parameters, bypass settings, and ECO mode.

Battery Management

Manages battery settings, charging parameters, and tests.

Battery Test

Performs standard or depth tests on the UPS battery.

Function Configuration

Configures generator settings and dedusting functions.

HMI Setting

Adjusts date, time, language, and screen brightness settings.

Password Setting

Allows changing the user login password for system access.

Buzzer Control

Enables or disables audible alarms for system events.

ON;OFF

Controls the UPS startup and shutdown operations via the screen.

Use and Operation

Use Announcements

Important announcements and guidelines before operating the UPS.

Operation Procedure

Outlines the general operational flow and sequence for the UPS.

UPS Start and Shutdown

Detailed steps for starting and shutting down the UPS unit.

Check before Startup

Pre-startup checks, load verification, and parameter review.

Startup

Steps to initiate the UPS startup sequence and system checks.

UPS Shutdown

Procedures for safely shutting down the UPS unit.

Switch to Bypass Mode Manually

How to manually switch the UPS to bypass mode.

Switch to Maintenance Bypass Mode From Inverter Output

Steps to switch to maintenance bypass from inverter output.

Switch to Inverter Output from Maintenance Bypass

Steps to switch back to inverter output from maintenance bypass.

Emergency Power Off (EPO)

How to use the Emergency Power Off function for immediate shutdown.

Emergency Power Off Recovery

Procedures to recover the system after an EPO event.

Parallel SystemStartup and Shutdown

Procedures for starting and shutting down parallel UPS systems.

Start Parallel System

Step-by-step guide to starting multiple UPS units in parallel.

Shutdown Parallel System

Steps to safely shut down multiple UPS units operating in parallel.

Emergency Power Off (EPO)

Emergency power off procedures for parallel UPS systems.

Maintenance and Troubleshooting

Maintenance Guide

General guidance and best practices for maintaining the UPS.

Safety Precautions

Safety measures to observe during maintenance operations.

Preventive Maintenance

Recommended tasks for routine preventive maintenance.

Battery Maintenance

Procedures for maintaining the UPS batteries for optimal performance.

Announcements for Battery Replacement

Important notes and precautions before replacing UPS batteries.

Troubleshooting

Guidance for diagnosing and resolving common UPS issues.

Common Abnormal Phenomena Diagnosis

Identifies common UPS problems and their potential causes.

Emergency Dispose for System Fault

Actions to take in case of system faults or failures.

Package, Transportation and Storage

Package

Details on packaging requirements, markings, and labeling.

Transportation

Guidelines for the safe transportation of the UPS device.

Storage

Recommendations for proper storage conditions of the UPS unit.

Technical Specifications

AEG IST7 Specifications

General

Capacity	700 VA / 420 W
Input Voltage	230 VAC
Communication Interface	USB
Frequency	50/60 Hz
Operating Temperature	0°C to 40°C
Storage Temperature	-15°C to 45°C
Output Voltage	230 VAC ± 10%