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Introduction
3
1.2 Reliability
Reliability is the most important design goal for Uninterruptible Power Systems. Liebert Series 610
UPS systems have demonstrated reliability by achieving a field-proven critical bus MTBF in excess of
2 million hours. In addition, our Quality Assurance program is certified to the requirements of
ISO 9001:2000 standards.
Liebert Large UPS systems are ETL listed to the requirements of UL 1778, CSA Certified and (when
applicable) CE marked. All equipment and components are manufactured to applicable UL, NEC,
IEC, EN, NEMA, ANSI, IEEE, EN50091-1, EN50091-2 and CSA standards and guidelines.
Designed for Success
The keys to reliability in the design of UPS systems include continuous improvements and using con-
servatively rated components, minimizing transfers to bypass, making operator controls understand-
able and providing easy access for maintenance and repair. Liebert UPS systems lead the industry in
all these areas.
For example, the Series 610 can handle substantial overloads through the solid state static bypass
switch without transferring to the bypass source. By minimizing transfers to bypass, the Series 610
minimizes operation of motor-operated circuit breakers and enhances system reliability.
As another example, the system control logic has been packaged into digital control logic to eliminate
the failure-prone discrete logic boards used in other brands of UPS products. Furthermore, the logic is
isolated from heat-generating components to ensure optimal operating temperatures.
Other Factors to Consider
Reliability depends on more than just UPS module design. Improper installation can cause any sys-
tem to fail. To prevent this, service technicians from your Liebert distributor or sales representative
thoroughly inspect the installation of all our systems to ensure they are installed properly and operat-
ing within performance specifications.
Once a UPS is properly installed, you—the on-site equipment operator—are the most important fac-
tor in preventing critical bus failures or unplanned transfers to bypass. To make your task easier, the
Series 610 UPS provides easy-to-follow, prompted instructions on the industry’s largest operator dis-
play screen.
If you ever need help, call Liebert Global Services (24 hours a day at 1-800-LIEBERT) or your Liebert
distributor or sales representative. Your attention to proper installation, operation and periodic main-
tenance will ensure that your mission-critical operations receive the best possible protection from
electrical disturbances and outages.