Rectifier is efficient front end

The newest member in the Galaxy family integrates the latest switch-mode technology with superior power, protection and control features packaged in a small, cost-efficient power-conversion system.

Tyco Electronics Power Systems, today announced the release of its switch-mode 595LT rectifier series, the newest member in the Galaxy family of products.

The product integrates the latest switch-mode technology with superior power, protection and control features packaged in a small, cost-efficient power-conversion system.

Powered with nWave technology, this rectifier packs double the power per cubic inch, while the lightweight, compact-size design frees up valuable floor space for users and requires minimal maintenance.

Designed as a key element in the GPS (Galaxy Power System) 4848/100 battery plant, the 595LT series converts 208, 240 or 480V AC input voltage into the DC voltage level required to power end-user equipment.

The power-conversion system exhibits excellent 92% efficiency, contributing to lower AC usage and operating costs.

Weighing approximately 25kg, the rectifier is designed to plug into a factory-wired relay rack.

Installation is swift and straightforward.

Interconnections to AC input, DC output, and control signals are automatic during insertion.

No adjustments or settings are necessary.

Functionally, the first conversion stage of the rectifier incorporates a new, high-efficiency topology with low-loss switching to generate a high-voltage intermediate bus from a three-wire, three-phase input AC source.

This technology enables direct conversion of voltages up to 480V AC nominal.

The bus transfers power to the switching bridge, DC/DC second stage.

The 595LT series features parallel operation with digital load sharing, which evenly balances the load current among multiple rectifiers.

It also provides precise regulation, which is required to maximise battery life.

To help prevent load damage, the 595LT series is equipped with overvoltage/overcurrent protection.

Two levels of high-voltage shutdown are provided, each powered from a separate voltage source.

Two levels of overcurrent protection are also provided.

The rectifier's control circuitry limits the current and an output circuit breaker prevents excessive output current.

An intelligent fan-speed control maintains safe operation at ambient temperatures from 0 to 50C.

The variable-speed control also minimises acoustic noise.

The 595LT series rectifier contains a digital meter that indicates current, temperature, or rectifier alarm messages for convenient system status.

A microprocessor manages all internal alarm and state decisions.

Additional monitoring and control capabilities are provided through serial digital communication with the Galaxy family of controllers.

"Tyco Electronics Power Systems has been a major supplier of central office power for telecommunications for a long time", says Sabi Varma Vice President, Marketing and R and D at Tyco Electronics Power Systems.

"This new product offers existing customers a graceful way to grow their plants and it also offers new customers a highly competitive product".

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