Specifications

U-ENS00011_99AtypSMSSpec_Rev2.doc

U-ENS00011 Rev2 12/9/08

SECTION 16610

STATIC UNINTERRUPTIBLE POWER SUPPLY SYSTEM

PART 1 GENERAL

1.1 SUMMARY

This specification describes a three phase continuous duty, an on-line, solid-state, uninterruptible

power system, hereinafter referred to as the UPS. The UPS shall operate utilizing the existing

power distribution system to provide a high quality, reserve source of power to electronic

equipment loads. The system shall consist of a converter, system battery, solid-st ate inverter,

automatic static bypass transfer circuit.

1.2 STANDARD

The UPS has been designed in accordance with and complies with the following standards:

1. UL 1778 (Underwriter Laboratories) Standard for UPS Equipment.

2. CSA 22.2 (Canadian S tandards Association – cUL Equipment).

3. IEC (International Electro-technical Commission) Semiconductor Converter Standards.

4. EMI compatibility: FCC Title 47, Part 15, Subpart B

5. IEEE 587, ANSI C62.41 1991 Standard for Surge Withstand Ability.

6. ISO 9001 Quality Assurance program.

1.3 SYSTEM DESCRIPTION

1.3.1 Components

The UPS system shall consist of the following major equipment:

A. UPS Module.

1. Insulated Gate Bipolar Transistor (IGBT) Converter.

2. Insulated Gate Bipolar Transistor (IGBT) Inverter.

3. Digital Signal Processor (DSP) using Pulse Width Modulation (PWM) for Direct

Digital Control (DDC) of all UPS control and monitoring functions.

4. Static bypass switch sized to provide fault clearing.

B. Battery system.

C. Battery protective and disconnect device.

D. Maintenance bypass switch (option).

E. Remote status alarm panel (option).

1.3.2 Mode of Operation

The UPS shall be designed to operate continuously at rated capacity as an on-line,

automatic reverse transfer system in the following modes:

A. Normal - The inverter continuously supplies AC powe r to the critical load. The

converter converts a utility AC p ow er source to regulated DC p ow er which then serves

as the inverter input and, simultaneously, as a float charge input to the storage battery.

B. Emergency - In the event of a utility AC power f ailure, the inverter shall derive its input

from the system battery, therefore providing uninterrupted power to the critical load.