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5.2Configuring Parallel System Operation

5.2.1General

The NX uses intelligent and reliable decentralized technology to achieve parallel operation of two or more modules of the same rating.

The 1+N system is used to:

Increase the reliability of the system to ensure adequate power supply to the critical load con- nected.

Increase serviceability and allow the execution of maintenance operations and reparations with- out affecting the ordinary operating conditions of the system (depending on the redundancy level).

5.2.2Features of Parallel System

The hardware and firmware for parallel UPS module operation is standard in the NX, and the configuration can be set up by changing the settings in configuration software.

It is easy to install the parallel cables in a ring, providing high reliability and redundancy. And the intelligent paralleling logic provides the user with maximum flexibility. For example, shut- ting down or starting up the UPS modules in the parallel system can be done in any sequence. If an overload transfer occurs, the whole system can recover automatically from bypass mode after the overload is cleared.

The total load of the parallel system can be queried from each module’s liquid crystal display screen.

Figure 22 1+N system block diagram

Supplied

N

 

N

by Others

 

 

 

Input Mains

 

Input Mains

 

Supply A B C

 

Supply A B C

 

UPS 1

CB 1

UPS 2

CB 1

 

Rectifier

 

Rectifier

 

SW1-C

 

SW1-C

Fuse

 

1

 

Battery

Charger

 

Static

Switch

Inverter

SW1-A

 

Fuse

 

D-SW1

2

 

Battery

Charger

 

 

Static

Switch

Inverter

SW1-A

SW1-D

A B C

 

A B C

Q1Ext

 

Q2Ext

QUPS

Paralleling Cabinet

QByp

To Load

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Emerson 10-30kVA installation manual Configuring Parallel System Operation, General, Features of Parallel System

10-30kVA specifications

The Emerson 10-30 kVA, 208V uninterruptible power supply (UPS) solution is a robust system designed to provide reliable power protection for critical applications in commercial and industrial settings. This UPS is ideal for safeguarding IT equipment, communication systems, and other sensitive electronics against power disturbances and interruptions.

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