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Emerson 115-208, 115-120, 15-90KVA, 115-50/60HZ, 115-600V, 115-480 user manual Operation

Models: 115-600V 115-208 115-120 115-50/60HZ 115-480 15-90KVA

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Operation

10.4Switching the UPS from Normal Operation to Maintenance Bypass

Follow the procedure below to transfer the load from the UPS inverter output to the Maintenance Bypass system.

! CAUTION

This procedure must be performed by properly trained and qualified personnel who are knowledgeable about the operation of this system. Failure to follow these instructions will result in loss of power and possible damage to critical equipment.

Before performing this operation, read any messages on the LCD to be sure that bypass supply is regular and the inverter is synchronous with it. If those conditions are not present, there is a risk of a short interruption in powering the load.

This procedure assumes that UPS is operating normally.

1.Press the INVERTER OFF button on the right side of the Operator Control Panel for longer than 2 seconds.

The Inverter indicator will turn Off, the status indicator will turn amber and an audible alarm will sound. The load will transfer to static bypass (internal) and the inverter will shut off.

NOTE

Pressing the Alarm Silence Switch cancels the audible alarm, but leaves the warning message displayed until the appropriate condition is rectified.

2.Open the Liebert BDC door to gain access to the bypass isolation breaker (BIB), maintenance bypass breaker (MBB) and maintenance isolation breaker (MIB).

3.When the lamp indicator on the BDC is illuminated, press and hold the adjacent push button and remove the Key from the lock (K0).

4.Insert the Key into the lock on the MBB and turn the Key.

5.Close the MBB.

6.Verify the MBB is closed. Failure to close the MBB will interrupt power to the load.

7.Open the MIB.

8.Remove the key from the lock on the MIB. Insert the key into the lock (K0) and turn the key.

9.The UPS system is now isolated from the critical load.

10.For a single-input system, the bypass isolation breaker (BIB) remains closed; this allows power to remain present at the UPS input; refer to Figure 48.

11.For a single-source, dual-input system, the bypass isolation breaker (BIB) can be opened to further isolate the UPS from input power; refer to Figure 64.

! WARNING

Risk of electrical shock and arc flash. Can cause property damage, injury and death.

Wait 5 minutes for the internal DC busbar capacitors to discharge before attempting to remove the internal protective barriers.

! WARNING

Risk of electrical shock and arc flash. Can cause property damage, injury and death.

Even with the UPS in maintenance bypass and Off, portions of the Liebert® APM™ system are still energized. Service must be performed by properly trained and qualified personnel only.

NOTICE

Risk of power loss to connected load. Can cause damageto equipment.

The load equipment is not protected from normal supply aberrations when the Liebert APM is operating in the maintenance bypass mode.

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Emerson 115-208, 115-120, 15-90KVA, 115-50/60HZ, 115-600V, 115-480 user manual Operation
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115-600V, 115-208, 115-120, 115-50/60HZ, 115-480 specifications

The Emerson 15-90KVA series is a robust and versatile power solution designed for various applications including commercial, industrial, and data center operations. Operating at voltage ranging from 115 to 480 volts, and supporting frequencies of either 50 or 60 Hz, this series is engineered to meet diverse power requirements.

One of the standout features of the Emerson 15-90KVA is its exceptional reliability and performance under varying load conditions. This power system incorporates cutting-edge technologies that enhance operational efficiency while minimizing downtime. The robust design of the system enables it to maintain optimal performance even in harsh environmental conditions, providing power continuity and safeguarding critical operations.

The Emerson 15-90KVA is equipped with advanced protection mechanisms that ensure the safety of connected equipment. These include overload protection, short-circuit protection, and thermal protection systems, which work together to prevent potential damage from power surges or faults. Moreover, the unit features a user-friendly interface that facilitates easy monitoring and control, enabling operators to track performance metrics and manage power supply effectively.

Another significant characteristic of this power series is its modular design, allowing for scalability and flexibility. Users can easily add or remove capacity based on changing power demands without the need for extensive system overhauls. This scalability makes the Emerson 15-90KVA ideal for growing businesses that require adaptable power solutions.

Energy efficiency is a focal point for the Emerson power series. Utilizing advanced power electronics and intelligent control algorithms, the system minimizes energy losses, ensuring that more power is available for direct usage. This not only reduces operational costs but also aligns with growing sustainability initiatives by lowering the overall carbon footprint.

In summary, the Emerson 15-90KVA series is a high-performance power solution characterized by its reliability, advanced protection features, modular scalability, and energy efficiency. Its versatility across multiple voltage levels and frequency options makes it suitable for a wide range of applications, solidifying its position as a preferred choice in the industry. Whether for industrial facilities, data centers, or commercial spaces, the Emerson 15-90KVA is designed to meet and exceed power demands effectively and efficiently.