1.8kW telecomms front end is strong stuff

A Gresham Power Electronics product story

Edited by the Electronicstalk editorial team Oct 20, 2003

New from Gresham Power is a class leading power conversion "front end" for telecomms and cellular infrastructure applications.

New from Gresham Power is a class leading power conversion "front end" for telecomms and cellular infrastructure applications.

Strongbox is the first product of this type to offer 1800W of 48V DC power from a single 1U, 19in rack unit with options for full redundancy, hot-swap and battery backup.

Each Strongbox hub can hold up to three modular power convertors from a range of over 20 different configurations.

Universal input AC types with power factor correction and DC input modules with either 36-72 or 18-32V DC input ranges are available.

The AC input modules offer standard single output voltages of 48, 24 or 12V DC, all at 600W output.

These may be configured to provide a full 1800W of output power or in N+1 or N+2 redundant format.

Other AC input models are available for rectifier/battery charging use or battery backup operation and microwave transmitters.

Two other AC input modules provide "hot-swap" capability with outputs of either dual 5V DC or, for telecomms applications, triple outputs of 3.3, 5 and 12V DC.

The Strongbox system offers very low output noise and meets EN55022 class B and FCC 68 part 15 and is fully safety agency approved and CE marked.

All modules are fully protected against overload, short circuit, overtemperature and overvoltage and the system will operate without power derating over the range 0 to 50C.

An optional I2C databus may be specified, and Strongbox hubs may be connected in parallel for higher system power.

Jake Moir, MD of Gresham comments: "The high power density and flexibility of our new Strongbox front-end hub enables carriers, service providers and telecomms equipment manufacturers the most cost effective power source available today".

Strongbox can save space in equipment rooms, allowing installation of additional line and control equipment and bringing system builders significant cost benefits.

Strongbox is available worldwide from Gresham and its sister companies Telkoor in Israel and Digital Power in the USA and via global network of distributors.