Power Systems & Controls, Inc.

Uninterruptible Power Supply

SMALL ROTARY Uninterruptible Power Supply (UPS)

LARGE ROTARY UPS

NO BREAK UPS

MULTI MODULE RING BUS UPS

SMALL STATIC UPS

LARGE STATIC UPS

Every power quality problem is different and so each solution should be tailored to address that specific problem. There are currently two competing technologies, static and rotary Uninterruptible Power Supply systems, in the 3-Phase Uninterruptible Power Supply (UPS) market. Each technology has its strengths and so is better suited for certain types of power quality problems. PS&C is in the unique position of being able to offer either Uninterruptible Power Supply technology. We do not have to shape the solution around a certain technology like most power quality equipment suppliers must. We can determine the best solution based on all the technologies available.

The basic purpose of any Uninterruptible Power Supply (UPS), static or rotary is to protect the power supply of electronic or electric equipment. The electrical characteristics of the actual load being protected plus outside influences on the electrical system determine which technology is the best solution. Other factors such as tolerance to risk (reliability), budget, site (environment) also must be considered. Static systems purchase price is typically less than rotary systems. The price variance is larger at the small sizes, 30kVA and below, and gradually equals out at the large sizes, 1 mVA and above. Because of the above-mentioned factors, a better comparison of cost between the two technologies may be lifecycle cost, which includes installation, operating and maintenance costs. Static Uninterruptible Power Supply systems are more efficient and so cost less to operate, but contrary to rotary Uninterruptible Power Supply systems, require a conditioned environment. Therefore, the installation of an HVAC system and its associated operating costs can reduce the cost advantage of a static system. A static system has a smaller footprint and is quieter, where as a rotary system is larger and must be sound attenuated to reach the equivalent noise level. A static system’s sine wave is simulated while a rotary system’s sine wave is generated. A static system has greater difficulty handling non-linear loads and must be oversized to handle them. A rotary system can handle non-linear and linear loads easily. Static systems are designed and best suited for a constant, linear load.

The PS&C Uninterruptible Power Supply (UPS) system has been designed with components that are normally expected to operate in unconditioned industrial locations.  This is opposed to other systems that were intended to operate in the conditioned environment of a computer room or data center.  The controls and other devices have been selected based on PS&C's experience in the manufacture of Uninterruptible Power Supply (UPS) systems since 1965.