Specifications

2033D Specification
1
1. SCOPE
1.1 The System
This specification describes an on-line, three phase, solid-state, uninterruptible power
system, hereafter known 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-state
inverter, automatic static bypass transfer circuit and integral maintenance bypass circuit.
2. SYSTEM DESCRIPTION
2.1 Components
The UPS shall be comprised of the major components listed below:
2.1.1 Insulated Gate Bipolar Transistor/Intelligent Power Module (IGBT)
Converter Section.
2.1.2 Insulated Gate Bipolar Transistor/Intelligent Power Module (IGBT) Inverter
Section.
2.1.3 Digital Signal Processor (DSP) using pulse Width Modulation (PWM) control for
Direct Digital Control (DDC) of all UPS control and monitoring functions.
2.1.4 Static bypass switch sized to provide fault clearing.
2.1.5 Standard features:
a. Transistorized PWM IGBT Converter.
b. Transistorized PWM IGBT Inverter.
c. UPS output isolation transformer.
d. DSP based fault memory and diagnostics.
e. DSP based menu controlled operation.
f. EMI filters on Input, Bypass and Output.
g. Surge Suppression on Input and Bypass circuit.
h. Active mitigation of reflected input harmonics (no passive filters).
i. Active control of output voltage distortion (no passive filters).
j. Internal DC Disconnect and Fuse protection.
k. Input AC Disconnect and Fuse protection.
l. Static Bypass Disconnect.