Table 39 Fault diagnosis

Fault symptom

Possible causes

 

 

LOP lamp lit

Loss of one or more phases in the AC supply

 

 

HVSD lamp lit

High voltage shutdown condition initiated by the controller

 

 

LVD lamp lit

Low voltage disconnect condition initiated by the controller

 

 

AUX 1 lamp lit

User defined alarm condition

 

When a Battery Disconnect Unit is present, this lamp will indicate that a

 

battery disconnect alarm is ongoing.

 

 

AUX 2 lamp lit

User defined alarm condition

 

 

BOD lamp lit

Low discharge voltage condition

 

Incorrect BOD level adjustment

 

 

ACO lamp lit

ACO switch has been operated during an alarm condition which is still

 

ongoing

 

 

EQL lamp lit

The equalize function has been activated

 

 

Rectifiers are not sharing the

Incorrect float or equalize adjustment on one of the rectifiers

load

Sense leads opened on one rectifier

 

Share mode incorrectly set

 

 

Meter display is OFF

Open meter fuse

 

Meter and display failure

 

Meter and display rotary switch in the OFF position

 

 

5.3Addition / Replacement Procedures

5.3.1Addition or Replacement of a Rectifier

! WARNING

PRECAUTIONS SHALL BE TAKEN TO AVOID SERVICE INTERRUPTIONS

WHEN INSTALLING A RECTIFIER, THE FLOAT AND EQUALIZE VOLTAGES MUST BE SET ACCORDING TO THE TYPE OF BATTERIES USED WITH THE SYSTEM. FAILURE TO SET THESE VOLTAGES PROPERLY MAY RESULT IN BATTERY UNDERCHARGING OR OVERCHARGING AND/OR BATTERY DAMAGE.

! WARNING

PROTECTING PERSONNEL AGAINST ELECTRICAL SHOCKS

INPUT VOLTAGES TO THE RECTIFIERS ARE AT A DANGEROUS LEVEL. ENSURE THAT THE CIRCUIT BREAKERS ARE LOCKED IN THE OFF POSITION AT THE AC SERVICE PANEL BEFORE ATTEMPTING TO WORK ON THE RECTIFIERS. DANGEROUS VOLTAGES MAY STILL BE PRESENT AT THE TERMINALS EVEN IF THE RECTIFIERS ARE OFF. USE A VOLTMETER TO VERIFY FOR THE PRESENCE OF SUCH VOLTAGES. DO NOT SWITCH CIRCUIT BREAKERS TO ON UNTIL INSTRUCTED TO DO SO IN THE APPROPRIATE PROCEDURE.

Add a rectifier as described in the following procedure for a Helios Rectifier 100/48 or as in the Adding a Helios Rectifier 200I/48 or 200E/48 procedure, whichever is applicable.

40 Maintenance

Page 46
Image 46
Liebert 6000 A, 3000, 4000, 1500 user manual Addition / Replacement Procedures, Addition or Replacement of a Rectifier

1500, 6000 A, 4000, 3000 specifications

The Liebert 3000 is a cutting-edge power protection solution designed to provide reliable and efficient backup power for critical applications. This uninterruptible power supply (UPS) system is engineered to safeguard sensitive electronic equipment from power disturbances, ensuring uninterrupted operations in data centers, telecommunications, and industrial environments.

One of the standout features of the Liebert 3000 is its high-efficiency design. With an efficiency rating of up to 94%, the system minimizes energy loss, resulting in lower operational costs and a reduced carbon footprint. This is particularly important in today's environmentally conscious climate, as organizations strive to meet sustainability goals while maintaining top-tier performance.

The Liebert 3000 employs advanced technologies to enhance its functionality. It incorporates online double-conversion technology, which provides a continuous supply of clean and regulated power. This technology ensures that connected loads receive stable voltage and frequency, shielding them from voltage spikes, sags, and outages. Additionally, the UPS offers features such as automatic battery testing, which helps ensure peak battery performance and reliability.

Another key characteristic of the Liebert 3000 is its modular design, allowing for flexible scalability. This means that organizations can easily expand the capacity of their UPS system as their power needs grow, without the need for extensive system overhauls. The modular architecture also facilitates simplified maintenance and reduces downtime, as individual modules can be serviced without interrupting power to the critical load.

The system is equipped with comprehensive monitoring and management capabilities. The Liebert 3000 provides real-time data on power usage, battery status, and system performance, enabling facility managers to make informed decisions and proactively address potential issues. The integration of remote management tools allows for seamless monitoring from anywhere, providing peace of mind for operators.

Overall, the Liebert 3000 combines high efficiency, advanced technology, and flexible design to deliver a robust power protection solution. Its reliability and performance make it a preferred choice for organizations seeking to protect their critical infrastructure while enhancing operational efficiency and sustainability. As businesses continue to rely on technology for their everyday operations, the Liebert 3000 stands out as a dependable safeguard against the uncertainties of power quality.