Power distribution system gets new surge arrester

An ABB Automation Tech (LV Products) product story
Edited by the Engineeringtalk editorial team Jul 3, 2000

A new surge arrester offers protection against the massive, transient overvoltages believed to be responsible for over 30 per cent of all damage to electronic equipment.

A new surge arrester, designed to integrate with ABB Control's Smissline power distribution system, offers protection against the massive, transient overvoltages believed to be responsible for over 30 per cent of all damage to electronic equipment.

Overvoltages can have a variety of causes such as a remote lightning strike, an electrostatic discharge or switching surges in power networks.

They can be propagated via power lines, signal lines or even data networks.

Although they typically last less than a few micro-seconds they can reach peaks of several thousand volts, this can have a devastating effect on electronic equipment, especially where it includes integrated circuits.

In order to protect low-voltage consumer installations and equipment against overvoltages, ABB has developed the SA4 SC surge arrester.

Fitted as part of the Smissline power distribution system it offers protection against overvoltages up to 1.5 kV and nominal discharge current surges up to 15 kA.

The SA4 SC can co-ordinate with up-circuit lightning arresters, while a floating changeover contact is available for telemonitoring.

An LED display indicates operating status.

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