Electrical Power & Protection


Latest Articles

New generation industrial power supplies
May 2004, Phoenix Contact
The Quint Power generation of power supply units from Phoenix Contact provides a universal 24 V supply from 60 to 960 W. Consistent implementation of a wide input range ensures safe operation on all common ...

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Earth leakage protection
April 2004, NewElec Pretoria
The GA range of earth leakage protection relays from NewElec, features an immunity to harmonics that are usually present when starting large electric motors direct-on-line. The harmonic filtering circuit ...

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Power quality analyser/disturbance recorder
April 2004, Surveillance, Logistics (Industry)
The new Analyst 3Q makes provision for monitoring all key parameters on 3-phase systems including neutral currents:    * 3-phase power quality analyser and disturbance recorder. * Unique power quality ...

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Slim-design power supply units
April 2004, Phoenix Contact
Phoenix Contact is offering its Mini Power family of extra-slim power supply units. At just 22,5 or 45 mm wide, they are well suited for use in tight spaces. In addition to a 24 V version with output ...

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All-in-one lightning and surge protection solution
March 2004, Commercial (Industry)
The DEHNventil TT SABS approved, all-in-one lightning current and surge arrester from Surge Technology is easily installed in different types of power supply systems, TNS, TN-C-S and TT systems, providing ...

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Handheld power-monitoring instruments
February 2004
Spescom MeasureGraph is offering three new handheld power-monitoring instruments from Dranetz-BMI. All three products incorporate a colour touch screen, 'super smart' automatic set-ups and an enunciator ...

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Compact safety relays with reinforced insulation
February 2004, Phoenix Contact
The new PSR safety relay family from Phoenix Contact provides high standards for monitoring emergency cutout and safety door power circuits and two-hand controls. All connections are pluggable ...

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Eliminating impact torque breakdowns
February 2004, NewElec Pretoria
In situations where electric motors are required to drive large reduction gearboxes that are coupled to the driving machinery, the torque magnification through the gearbox on sudden load demands can be ...

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User-friendly protection relays
December 2003, NewElec Pretoria
NewElec's N series motor protection relays provide flexibility to meet most low voltage application requirements from 5 to 550 A. Five models are available with protection features ranging from basic ...

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Triggered lightning protector
December 2003, Phoenix Contact
Phoenix Contact has developed the single-channel fully enclosed and triggered Flashtrab FLT 100 N/PE CTRL-1.5 Class B lightning protector especially for central power supplies. The protector contains ...

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Breathing new life into an old UPS
December 2003
Meissner has introduced the customer-orientated incoming gate bipolar transistor upgrade card (IGBT) for its MP3000MKI range, breathing new life into an existing uninterruptible power supply (UPS) product. ...

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Lightning protection for mines
December 2003, Surveillance
According to various surveys undertaken by Surge Technology, many mine engineers countrywide still believe that lightning is an 'act of God' that cannot be safeguarded against. Even today, some mines ...

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Lightning - containing the threat
December 2003
Lightning events are one of the major threats to our commercial/industrial as well as domestic environment. Every year, many millions of rands worth of direct and indirect damage is experienced through ...

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Application-specific surge arresters
December 2003
Surge Technology's DEHNguard range of single-pole and multipole lightning surge arresters meet Class 2 requirements and are designed to be application-specific in low voltage applications. The devices ...

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New generation of power supply units
December 2003, Phoenix Contact
The new Quint Power generation of power supply units from Phoenix Contact provides a universal 24 V supply from 60 to 960 W. Consistent implementation of a wide input range ensures safe operation on all ...

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'Modem-on-chip' reduces chip count for DSL broadband
19 November 2003, Electrocomp, Electronics Technology
Infineon's new VDSL5100i chip, presented at the Supercomm trade fair, has more than four million transistors and other electronic components on only 1,4 square centimetres. The VDSL 'Modem-on-chip' solution ...

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Power supply for Zone 2
November 2003, Phoenix Contact
For use in areas with an explosion risk in Zone 2, Phoenix Contact is offering two compact Quint power supplies and a Quint Diode redundancy model with type 'n' explosion protection in accordance with ...

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Radar power supply technology
November 2003
TMD's power supply design team is offering its PTM 7599 switched-mode power supply. This high performance, flexible unit has been designed to meet the stringent requirements of modern radars, including ...

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Slim power supply units
November 2003, Phoenix Contact
Phoenix Contact is offering Mini Power - a family of extra-slim power supply units. Measuring 22,5 or 45 mm wide, they are suitable for use in tight spaces. In addition to a 24 V version with output currents ...

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The power behind an exclusive lodge in Serengeti
October 2003
The power solution was two dedicated single-phase super silent generator sets, 50 and 35 kVA in capacity, powered by a Perkins1004 TG1 and a Perkins1004G series engine working in conjunction with a 9 kW trace inverter/battery system

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