1600EP Single Phase Uninterruptible Power Supply Systems Guide Specifications

3.6, 6.0, 8.0, 10.0, 14.0, 18.0, 22 kVA

1.0Scope

This specification describes the requirements for an On-Line Uninterruptible Power Supply (UPS). The UPS will supply a computer grade AC output sinewave which is unaffected by the quality of the AC input. The input voltage is single phase and the output voltage is single phase.

2.0General Operation

Under normal operating conditions, the UPS's rectifier converts alternating current (AC power) to direct current (DC power), which is required for the system's inverter and battery charger. The charger supplies regulated DC power to keep the batteries constantly charged. The inverter uses pulse width modulation (PWM) that fully utilizes the characteristics of insulated-gate bipolar transistors (IGBT) to convert DC power to regulated AC power. Therefore there is a constant supply of power. The batteries will instantaneously supply the inverter DC power should an AC power line failure occur.

2.1Performance Standards

The UPS shall be designed with the applicable sections of UL, CUL, and ISO 9001 14001. The UPS shall have UL and CUL listing.

3.0General

3.1Materials

All materials used are of new manufacture using the latest technology and should not have been in prior service except for specified factory testing. IGBT's (insulated-gate bipolar transistors) are used exclusively in inverter and chopper sections.

3.2Components

All functioning components are solid state with no moving parts.

3.3Installation

The installation of the UPS must comply with the UPS manufacturer's recommendations that will be supplied before delivery of the UPS. Local electrical codes and the National Electric Code must be complied with. All wiring must comply exactly with what is specified.

3.4Assembly

The UPS shall be delivered fully assembled and be fully functional.

4.0System Theory and Operation

4.1Theory

AC input from the utility system is converted into DC power chopper. The stepped up DC power is then converted to AC power by the inverter. The output voltage waveform of the inverter will be the pulse voltage waveform modulated by the PWM control using the 14 kHz switching frequency sinewave. The PWM-Modulated voltage waveform is transformed into a sine voltage waveform by the inductive component of the inverter inductor and by the capacitive component of the capacitor filter. The chopper, inverter,

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Toshiba 1600EP specifications
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1600EP specifications

The Toshiba 1600EP is a significant model in the history of portable computing, representing a blend of innovation, functionality, and compact design. Launched in the mid-1980s, it was part of the early wave of laptop computers that paved the way for modern mobile devices. Designed for professionals on the go, the Toshiba 1600EP combines essential features with robust performance, making it a valuable tool for business users and tech enthusiasts alike.

One of the standout characteristics of the 1600EP is its lightweight design. Weighing around 5.9 pounds, it was relatively portable for its time, allowing users to carry it easily to meetings or travel situations. With dimensions that emphasize compactness, the device ensures that users can work effectively without being burdened by excessive weight.

The 1600EP is powered by an Intel 80286 processor, which was a leading-edge technology during its launch period. This microprocessor offered users improved processing capabilities and multitasking performance, enhancing overall productivity. Coupled with a memory capacity of up to 1.5 MB of RAM and an optional hard drive, the laptop provided ample space for applications and documents, making it suitable for various business tasks.

The display of the Toshiba 1600EP is another notable feature. It boasts a 7-inch LCD screen with a resolution of 640 x 200 pixels, providing clear visuals for text and graphics. Although modest compared to modern standards, the screen offered sufficient clarity and responsiveness for users to navigate software applications and manage spreadsheets effectively.

Connectivity options on the 1600EP include ports for serial communication and parallel connections, allowing users to attach printers and other peripherals easily. This adaptability was critical at a time when corporate environments increasingly relied on various devices to enhance productivity.

The Toshiba 1600EP also features a durable design, reflecting Toshiba's commitment to quality and longevity. Built to withstand the rigors of travel, the laptop’s casing helps protect it from accidental bumps and scratches, contributing to its resilience over time.

In summary, the Toshiba 1600EP stands out for its combination of portability, processing power, and practical features, capturing the essence of early mobile computing. With its enduring legacy, the 1600EP remains a noteworthy example of innovative technology in the evolution of laptops.
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