Eaton Powerware 9390 Specifications Manual

Static Uninterruptible Power Supply 

Page 1 of 1 

Eaton 9390 Guide Specification 

October 9, 2009  

STATIC UNINTERRUPTIBLE POWER SUPPLY 

GUIDE SPECIFICATION 

Model Eaton 9390 20-160 kVA 

PART 1 - GENERAL 

1.01 

SUMMARY 

A. 

This specification describes a three-phase continuous duty, on-line, double conversion, 

solid-state uninterruptible power system, hereafter referred to as the UPS.  The UPS 

shall operate in conjunction with the existing building electrical system to provide power 

conditioning, back-up and distribution for critical electrical loads.  The UPS shall consist 

of, as required by the project, the UPS module, battery cabinet(s), and accessory 

cabinet(s) for transformers, maintenance bypass, parallel tie, and distribution 

applications, and other features as described in this specification. 

1.02 

UPS SYSTEM DESCRIPTION 

A. 

UPS System Components:  The UPS system shall consist of the following main 

components: 

1. 

UPS module containing a Rectifier, Inverter, Battery Charger, Static Bypass, and 

associated Control and Monitor Panel. 

2. 

Battery string(s) in Line-and-Match Battery Cabinets. 

3. 

Line-and-Match accessory cabinets for transformer, maintenance bypass, 

parallel tie, and distribution applications. 

4. 

Non-matching wall mounted or floor standing maintenance bypass cabinets or 

multi-module parallel tie cabinets. 

B. 

UPS Module Modes of Operation:  The UPS Module shall operate as an on-line, fully 

automatic system in the following modes: 

1. 

Normal:  Utilizing commercial AC power, the critical load shall be continuously 

supplied by the Inverter.  The Inverter shall power the load while regulating both 

voltage and frequency.  The Rectifier shall derive power from the commercial AC 

source and shall supply DC power to the Inverter.  Simultaneously, the Battery 

Charger shall charge the battery. 

2. 

Battery:  Upon failure of the commercial AC power, the critical load shall continue 

to be supplied by the Inverter, which shall obtain power from the batteries without 

any operator intervention.  There shall be no interruption to the critical load upon 

failure or restoration of the commercial AC source. 

3. 

Recharge:  Upon restoration of the AC source, the Charger shall recharge the 

batteries and simultaneously the Rectifier shall provide power to the Inverter.  

This shall be an automatic function and shall cause no interruption to the critical 

load. 

4. 

Bypass:  If the UPS module must be taken out of the Normal mode for overload, 

load fault, or internal failures, the static bypass switch shall automatically transfer 

the critical load to the commercial AC power.  Return from Bypass mode to 

Normal mode of operation shall be automatic. No-break transfer to and from 

Bypass mode shall be capable of being initiated manually from the front panel. 

5. 

Energy Saver:  The UPS shall continuously monitor the voltage and frequency of 

the bypass source. When the source parameters are within acceptable limits, the