Introduction To Eaton Ups - Eaton 93PM User And Installation Manual

2 Introduction to Eaton UPS

The Eaton® 93PM uninterruptible power supply (UPS) is a true online, continuous-duty,
transformerless, double-conversion, solid-state, three-phase system, supplying conditioned and
uninterruptible AC power to critical load and protecting it from power failures.
The UPS is used to prevent loss of valuable electronic information, minimize equipment downtime,
and minimize the adverse effect on production equipment due to unexpected power problems.
The Eaton UPS continually monitors incoming electrical power and removes the surges, spikes,
sags, and other irregularities that are inherent in commercial utility power. Working with a
building's electrical system, the UPS system supplies clean, consistent power that sensitive
electronic equipment requires for reliable operation. During brownouts, blackouts, and other power
interruptions, batteries provide emergency power to safeguard operation.
The UPS system is housed in a single, free-standing cabinet with safety shields behind the door for
hazardous voltage protection. Each UPS cabinet has a centralised system static bypass. The available
static bypass ratings are 50 kW, 100 kW, 150 kW and 200 kW. The static bypass size is chosen
according to UPS system power. For example, if future requirement is to upgrade the UPS capacity,
the UPS bypass rating will have to be selected accordingly. In addition, the bypass ratings of all UPS
cabinets in a parallel system need to be matched.
Eaton 93PM output power ratings are based on 50 kW rated uninterruptible power modules (UPMs).
A single UPS cabinet can house one to four UPM modules to get ratings of:
• 1 x 50 kW = 50 kW
• 2 x 50 kW = 100 kW
• 3 x 50 kW = 150 kW
• 4 x 50 kW = 200 kW
A UPM includes a rectifier, inverter, battery converter, and independent controls. Each UPM is able to
operate independently from the other power modules.
NOTE
Startup and operational checks must be performed by an authorized Eaton Customer Service
Engineer, or the warranty terms specified in Chapter 9 Warranty on page 81 become void.
This service is offered as part of the sales contract for the UPS. Contact service in advance
(usually a two-week notice is required) to reserve a preferred startup date.
8 30-200 kW
User's and Installation Guide
P-164000249
Revision 2