Liebert® Series 610™ UPS - Jonweb.net
Liebert® Series 610™ UPS - Jonweb.net
Liebert® Series 610™ UPS - Jonweb.net
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Introduction<br />
Figure 3<br />
System Control Cabi<strong>net</strong>s<br />
Types of System Control Cabi<strong>net</strong>s (SCCs)<br />
• SCCT—A stand-alone cabi<strong>net</strong> containing system control logic for up to six <strong>UPS</strong> modules, a static<br />
bypass switch, manually operated disconnects for the static bypass switch and two motor-operated<br />
system circuit breakers.<br />
• SCCI—System control logic and static bypass switch are integrated into a switchboard cabi<strong>net</strong><br />
manufactured by others, which also includes the system circuit breakers.<br />
• SCCC—An integrated configuration like the SCCI, but with a static switch rated for continuous<br />
duty.<br />
1.2 Reliability<br />
Reliability is the most important design goal for Uninterruptible Power Systems. Liebert <strong>Series</strong> 610<br />
<strong>UPS</strong> systems have demonstrated reliability by achieving a field-proven critical bus MTBF in excess of<br />
2 million hours. In addition, our Quality Assurance program is certified to the requirements of<br />
ISO 9001 standards.<br />
Liebert Large <strong>UPS</strong> systems are ETL listed to the requirements of UL 1778. All equipment and components<br />
are manufactured to applicable UL, NEC, NEMA, ANSI, IEEE and CSA standards and guidelines.<br />
Designed for Success<br />
The keys to reliability in the design of the <strong>UPS</strong> system are using conservatively rated components,<br />
minimizing transfers to bypass, making operator controls understandable and providing easy access<br />
for maintenance and repair. Liebert <strong>UPS</strong> systems lead the industry in all these areas.<br />
For example, the Liebert <strong>Series</strong> 610 can handle substantial overloads through the solid state static<br />
bypass switch without transferring to the bypass source. By minimizing transfers to bypass, the Liebert<br />
<strong>Series</strong> 610 minimizes operation of motor-operated circuit breakers and enhances system reliability.<br />
As another example, the system control logic has been packaged into digital control logic to eliminate<br />
the failure-prone discrete logic boards used in other brands of <strong>UPS</strong> products. Furthermore, the logic is<br />
isolated from heat-generating components to ensure optimal operating temperatures.<br />
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