Protection components for computer networks
To prevent damage to electronic and computer equipment caused by
ValveTrab is a medium-suppression surge arrestor for buildings containing computer networks. Valvetrab units are fitted to the mains electricity distribution board and will quench over-voltages between phase/neutral and earth.
The two-part design facilitates removal of the arrestor for testing or replacement without interruption of the mains supply.
In the event of serious overload the varistor unit will self-sacrifice and disconnect itself from the circuit. This is indicated in an integral display window, and can be signalled remotely if the installation utilises base elements incorporating remote-warning contacts.
ValveTrab units are available for a wide variety of supply voltages, and are manufactured with many different quenching characteristics and operation times.
Initial fitting of these units requires isolation of the mains power distribution board, and should only be carried out by professionally competent and qualified personnel.
Subsequent replacement of ValveTrab units which have blown sacrificially can be done without the need to power down the electrical supply to the building, and without having to employ the services of an electrician. The old unit is pulled out and a new one inserted into the socket.
DIN-rail mounting, 1-module width.
If used to protect circuits of >125 Amperes, the ValveTrab(s) must be sub-fused to 125A or less.
Manufactured in Germany
ExpLAN offers the complete range of over 150 ValveTrab suppression components. However the following devices are most likely to satisfy the requirements of the average computer network installation.
You will require in each Distribution Board, one ValveTrab for neutral and one for each phase. Thus a 3-phase Board requires 4 units.
Price includes advice and instruction on fitting, which must be carried out by a suitably qualified electrician.
Contact details for ExpLAN Computers Ltd can be found on the ExpLAN homepage.