Electrical Power & Protection


Latest Articles

Lightning protection for office and domestic use
May 2002, Surge Technology
Surge Technology's locally designed and manufactured SurgeGuard range of lightning protectors are available in three types to protect computer networks, fax machines, video recorders, satellite decoders ...

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High voltage polymer surge arresters
May 2002, Surge Technology
A new range of metal oxide surge arresters has been added to Tridelta's SBK Series for protecting high voltage systems up to 420 kV. Suitable for both indoor and outdoor applications, the surge arresters ...

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Compact power supply delivers when others trip
April 2002
The upper power range of the MiniLine series of power supply units from PULS is being extended to 100 W. Scheduled to be available in May 2002, its makers say that it is half the size of the ...

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PCI communication card with surge protection
April 2002, ProMicro
Advantech's PCI-1620A/B is an eight-port RS232 PCI communication card that is compatible with PCI 2.1 bus specifications and provides optional surge protection. It features high transmission speeds of ...

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Second-generation AS-interface power supplies
March 2002
The comprehensive approvals package (including EN, UL, CUL, CB Scheme), the excellent EMC (compliant with the current standards of the most stringent category in each case, interference level B, EN55024) and the CE label in accordance with the EMC and low voltage directive, ensure that the power supply units can be used worldwide in virtually all industrial and office/home applications

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Insulation monitoring for unearthed systems
March 2002, Anglo Allied Engineering
Today's power supply systems often require high levels of operational safety and availability. Bender has developed a new family of A-isometers to monitor all types of unearthed systems. The new AMP ...

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Unleash the power? To switch off, or not to switch off
February 2002
The new units have two fundamentally different overload characteristics, either of which may be selected by the user via a plug-in jumper (with easy external access): the OVL continuous mode and the fuse mode

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4-port RS232 PCI comms card with surge protection
February 2002, ProMicro
A four-port RS232/422/485 PCI communication card is available which is compatible with the PCI 2.1 bus specification. The PCI-1610A/B from Advantech provides four optional surge protection ports to protect ...

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Versatile three-phase power supply unit
January 2002
Munich-based power supply specialist, PULS has launched a three-phase, compact 240 W standard power unit (10 A at 24-28 V d.c.) with a number of innovative features, some of which are discussed below. ...

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New generation lightning current and overvoltage arrester
December 2001, Surge Technology
The new DEHNventil TT is a combined Class I lightning current arrester and Class II overvoltage arrester in one compact unit requiring only 30% of the space of similar devices. No decoupling inductance ...

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Rehabilitation and modernisation of the Mont Blanc tunnel (France)
October 2001
In order to ensure another catastrophe like the 24 March 1999 fire in the Mont Blanc tunnel in France does not happen again, new security measures have been taken for the rehabilitation of the Mont Blanc ...

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Powerful power surge protectors
October 2001
Cape Town-based Rhomberg manufactures and distributes power surge protectors that can withstand surges of up to 300 kA. Originally designed by McAllister Technologies of Pietermaritzburg, the Rhomberg ...

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5-in-1 power entry module
October 2001
By integrating five functions in a package, Schurter says its unit takes up about one third less panel space than similar modules on the market. It contains an AC power inlet, one or two-pole on/off switch ...

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High capacity arrester makes use of gliding spark gap technology
October 2001, Surge Technology
The Dehnventil from Surge Technology is a two or four-pole arrester incorporating patented specialised gliding spark gap technology, which limits overvoltage values to below 3 kV during direct lightning ...

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Lightning protection for networked systems
September 2001, Surge Technology
Surge Technology has developed over 200 specific protection modules for the various computer and instrumentation protocols, video/intercom, radio and other related systems

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Flexible addition to UPS' range
September 2001
Power Development Services, the South African distributor for Liebert Hiross power products, has recently extended their successful uninterruptible power supply (UPS) range to include the new Nfinity ...

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Improved lightning protection in less space
September 2001, Surge Technology
The new DEHNventil is a combined Class I lightning current arrester and Class II surge arrester in one compact unit requiring only 30% of the space of similar devices. No de-coupling coils are necessary ...

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Surge protection/optical isolation
July 2001, RJ Connect
Protect your equipment and investment.       Serial connection problems in an industrial environment Serial communication reliability can be adversely affected in a hazardous industrial environment. The ...

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Multilevel surge protection
June 2001, Phoenix Contact
Termitrab TT are terminal blocks with multilevel surge protection. The narrow design (6,2 mm wide) makes this product especially useful for projects where several signal interfaces for automation technology ...

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Power quality recorder invokes positive response
June 2001, TLC Engineering Solutions
Columbus Stainless plant in Middelburg is satisfied with the power quality monitoring system, which was bought two years ago from Bryanston-based TLC Software. The system was chosen after a thorough market ...

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