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IEEE Emerald Book Series - Using SPDs in Applications with Primary & Alternate Power Systems

From Emerson Network Power - Surge Protection
 

 

IEEE Standard 1100-2006 (Emerald Book), Section 9.8.5.14 (p. 369) "When used with a well-regulated generator, SPDs provide a high level of protection for sensitive equipment. However, if the generator output voltage increases above the SPD maximum allowable limit, the varistors start to conduct mains current on each half-cycle of the supply and get very hot. This may cause the fuses to blow and possibly damage the SPD. If regulation is poor it may be necessary to use an SPD designed for a higher voltage supply, for example using a 480 V device on a nominal 415 V system."


Products & Services
Power filters are electronic circuits designed to locate and eliminate surges, harmonic transient currents, spikes, and other unwanted signals in power distribution systems and electrical equipment such as computers, television sets, and other devices. Learn more about Power Filters

Product Announcements
Alltec Corporation - UL 3rd Edition Changes
Transient Voltage Surge Suppression (TVSS) is now officially Surge Protection Device (SPD) with the new ANSI/UL 1449 & UL Standard for Safety and Surge Protective Devices, UL 1449. (read more)
Time Mark Corporation - Surge Protective Devices
Time Mark is announcing the arrival of their new Model SPD (Surge Protective Devices) Series. The Model SPD Series are designed to protect sensitive electronic equipment from the harmful effects of... (read more)
CARLO GAVAZZI Automation Components - Three-Phase Switching Power Supplies SPD Series
Carlo Gavazzi is proud to introduce its expanded line of three-phase power supplies. The SPD Series 3-Phase Switch-Mode Power Supplies are offered in 120, 240, 480 and 960 watt outputs, with an... (read more)
Baker Instrument Company, an SKF Group Company - PP24 Power Pack
The PP24 is a high performance impulse generator that is capable of tesitng high voltage windings up to 24 kV. The output is controlled by a variable transformer from 2,000 V to 24,000 V. (read more)
Schneider Electric Surge Protection - SDSA1175 Series 001 Secondary Surge Arrester
The Square D SDSA Secondary Surge Arresters provides lightning and surge protection up to 40,000 amps, hard-wired devices are ideal for OEM's, residential retrofit, and multi-unit construction... (read more)
Schneider Electric Surge Protection - SDSA 3650 Secondary Surge Arresters
The Square D SDSA Secondary Surge Arresters provides lightning and surge protection up to 40,000 amps, hard-wired devices are ideal for OEM's, residential retrofit, and multi-unit construction... (read more)
Powerstar, Inc. - Shipboard 2.2KVA tower 901D grade A UPS Mil spec
Features of the PS2201-SS Grade A 2.2KVA/1980 watt Mini tower shaped case UPS- Hull mount and straps available. Ø Mil-Std-901D-A Mil-Std-167 Ø Shipboard Delta Power 120VAC to 240VAC. Ø 304... (read more)
Hitech (HK) Co., Ltd. - Metal Oxide Varistors (MOVs)
Metal Oxide Varistors (MOVs) UL Certification for our GDT and MOV. (read more)
Baker Instrument Company, an SKF Group Company - PP30, PP40, PP85 High Voltage Power Packs
The PP30, PP40 or PP85 power packs have the latest innovations in testing electrical insulation systems. Designed for shop or field performance, these high voltage generators provide cost effective... (read more)
 

Topics of Interest
IEEE Standard 1100-2006 (Emerald Book), Section 8.6.3 (p. 300) "Facilities housing electronic load equipment of any type should have service entrance equipped with effective lightning protection in... (Read More)
IEEE Standard 1100-2006 (Emerald Book), Section 8.4.2.5 (p. 269), "...when an SPD is located inside switchboards or panelboards, there is a concern that failure of the SPD can cause collateral damage... (Read More)
IEEE Standard 1100-2006 (Emerald Book), Section 8.6.5 (p. 302) "Lightning and other transient voltage and current-producing phenomena are harmful to most UPS equipment and to its service electronic... (Read More)
The solar spectral power distribution (SPD) represents a critical variable in natural and artificial weathering processes. Weathering research often requires reference SPDs representative of end-use... (Read More)
The past two years have seen many changes in codes and standards of surge protective devices (SPDs). The specific standards are from Underwriters Laboratories (UL), and the National Fire Protection... (Read More)