LEGRAND PREMIUS - User Manual

jacquelinecarterOct 31, 2025

What to do if the LEGRAND PREMIUS shows a red fault LED?

C
Christian MossOct 31, 2025
If the LEGRAND UPS displays a red fault LED, take the following steps: 1. Ensure proper battery connection, then recharge the batteries for 8 hours to see if the UPS provides backup power normally. 2. If the breaker is tripped, turn off the UPS completely and keep the CAM switch at the INV position before pressing the breaker. Also, reduce the load on the UPS output. 3. Remove any short circuits at the EPO terminal. 4. Clear any obstructions from the ventilation holes. 5. Confirm that the cooling fans on the rear panel are functioning correctly. 6. Ensure the UPS is operating normally. If in CVCF mode, turn the UPS off and then on again. 7. Verify that all parameters except the ID Number are the same for a parallel UPS. 8. Disconnect and reconnect the RJ45 connector or set a UPS w...

Brand	LEGRAND
Model	PREMIUS
Category	UPS
Language	English

Brand

LEGRAND

Model

PREMIUS

Safety Instructions and Battery Care

Safety Instructions

Provides essential safety guidelines for operating and installing the UPS unit.

Battery Care

Details proper procedures for storing, using, and disposing of UPS batteries.

Product Introduction

General Characteristics

Outlines the key features and operational characteristics of the PREMIUS UPS.

Symbols on the LCD Display Panel

Explains the various symbols displayed on the UPS LCD panel for status indication.

Panel Explanation

Details the components and indicators on the front and rear panels of the UPS.

Front Panel for 5-10 kVA

Details the components and indicators on the front panel of the 5-10 kVA UPS models.

Front Panel for 1-3 kVA

Details the components and indicators on the front panel of the 1-3 kVA UPS models.

Rear Panel

Illustrates the various ports and connectors on the rear panel of different UPS models.

Communication Port

USB Definition

Details the USB port specifications, version, and pin assignments.

RS-232 Interface Configuration

Explains the required configuration settings for the RS-232 interface.

Installation and Operation

Unpacking

Lists the standard package contents and initial inspection procedures for the UPS.

Selecting Installation Position

Provides guidelines for choosing an optimal and safe location for UPS installation.

Terminal Block Explanation

Details the terminal blocks for input/output connections on 5-10 kVA models.

Socket Details

Describes the types and number of output sockets available on 1-3 kVA models.

Startup in Normal Mode

Step-by-step guide for starting the UPS in normal mode for 5-10 kVA units.

Startup in Battery Mode (Cold Start)

Instructions for starting the UPS using only battery power when AC input is unavailable.

Check Measured Values

Explains how to view various UPS measurements and parameters on the LCD display.

UPS Default Data and Special Functions

Details how to access and modify default UPS settings and execute special functions.

UPS Default Settings

Describes how to change default UPS settings like buzzer, self-test, and bypass windows.

Troubleshooting Malfunctions

Provides steps to diagnose and resolve unknown UPS malfunctions and error codes.

Shut Off Procedure

Details the procedure for safely shutting down the UPS unit.

Maintenance Bypass Mode

Explains how to use the maintenance bypass mode for servicing the UPS.

Startup in Normal AC Mode (1-3 kVA)

Step-by-step guide for starting the UPS in normal mode for 1-3 kVA units.

Release UPS Lock Status

Outlines steps to unlock a UPS that has locked itself due to critical abnormalities.

Turn UPS Off

Instructions for turning off the UPS in different modes (Line or Backup).

Self-Test (Line Mode)

Details the function for testing battery capacity in AC mode.

Troubleshooting Guide

Troubleshooting

Lists common UPS malfunctions, error codes, and their corresponding solutions.

Communication Software

Hardware Setup

Explains how to connect the USB cable for UPS communication.

Software Installation

Guides users on installing the UPS monitoring software for configuration.

Specifications

5-10 kVA Without Isolation Transformer

Lists the technical specifications for 5-10 kVA UPS models without an isolation transformer.

5-10 kVA With Isolation Transformer

Lists the technical specifications for 5-10 kVA UPS models with an isolation transformer.

1-3 kVA Without Isolation Transformer

Lists the technical specifications for 1-3 kVA UPS models without an isolation transformer.

1-3 kVA With Isolation Transformer

Lists the technical specifications for 1-3 kVA UPS models with an isolation transformer.