Surge Suppressors Reference Materials

Description: The TPS-ICL-3P, a 3-phase inrush current limiter for small 400VAC PV inverters, suppresses startup/grid-connection inrush via controlled impedance, balancing 3-phase current for reliability. ...

Description: Surge protection devices are evolving from being "accessories" toward "necessities." Learn why more OEMs and panel builders are making the smart move to include these devices in their designs. ...

Description: Lightning's perfect storm for destruction is on the solar field. Solar panels' large-and often exposed and isolated-location make surge protection critical for it to last its lifespan. ...

Description: Electric Cars are inherently more reliable than the gasoline ones that they are replacing. So, anyone who purchases one of these vehicles can reasonably expect years of trouble-free transportation. ...

Description: A common mistake in determining the total cost of a failure is to look only at the cost of the failed component. In reality, the analysis of the exact cost of a failure needs to take into account the ...

Description: These days the demand for electricity is ever increasing and one possible solution for the long term supply of electricity is nuclear fusion. Unlike current nuclear power stations, which operate on ...

Description: The users of electronic equipment and telephone and data-processing systems must face the problem of keeping this equipment in operation in spite of the transient overvoltages induces by lightning. ...

Description: Radio communication equipment deployed in fixed, nomadic or mobile applications is especially vulnerable to lightning strikes because of their application in exposed areas. The most common disruption ...

Description: For industrial sites or communication based systems integrating a linked data network, any single issue at one end of the system can cause issues throughout. It is critically important to reinforce a ...

Description: Utility-Interactive or Grid-Tie Solar Photovoltaic (PV) Systems are very demanding and cost intensive projects. They often require the Solar PV System to be operational for several decades before it ...

Description: Today's microprocessor based electronic equipment are increasingly more vulnerable to lightning induced voltage surges and electrical switching transients because they have become more sensitive, and ...

Description: A protection system with a poor ground is the same as having no protection at all. ...

Description: This design note describes an electrical schematics that enables GAIA Converter DC/DC module to be protected against surges generally occuring in railways applications. Surges are short term high ...

Description: This design note describes an electrical schematics that enables GAIA Converter DC/DC module to be protected against surges generally occuring in railways applications. Surges are short term high ...

Description: Unable to gFollowing is generalized information about design choices influencing SPD safety. As an overview, SPD failures are caused by system level sustained overvoltages. SPDs rarely fail from ...

Description: Surge Standards seem disjointed? Help is here! UL 1449 was revised into UL 1449 Second Edition Revision (Rev 2.5) to include Intermediate Fault Current Testing. This became effective Feb 2007. This ...

Description: Some caution should be used in evaluating the EMI/RFI filtering capabilities of a surge suppressor. MIL-STD-220B defines the basic testing procedures and test equipment to be used. However, there are ...

Description: The answer is subjective. Reasons for selecting larger kA ratings are one of the most misunderstood concepts in surge suppression. * I have a 100A panel - what size SPD do I need? * My customer has ...

Description: Lead lengths affect SPD performance. In simple terms, short and straight leads are better. Most electrical personnel have experienced a power line drop a few volts over several hundred feet. That ...

Description: APT SPD/TVSS are manufactured and tested in accordance with applicable industry standards. UL Marks are found on APT equipment. These are the most accepted and recognized safety certification marks in ...

Description: Multiple pulse or repetitive impulse testing is generally performed using IEEE C62.45-2002 recommendations using waveforms described in IEEE C62.41.2-2002. Often referred to as "pulse life", ...

Description: There are several IEEE surge standards in section C62. These address suppression components, outline surge environments, and offer guidance based on the collective input of hundreds of surge ...

Description: National Electrical Manufacturers Association (NEMA) may be best known for LS-1, but also serves as a collective mouthpiece for SPD manufacturers relating to other Standards such as UL 1449, IEEE C62 ...

Description: Suppose we have a 2.0KVA transformer with the following specifications: Peak Inrush Current occurs in one cycle = 564 Amps as measured on the scope. Practical Max Inrush Current occurs in 5 cycles = ...

Description: High inrush current can be produced when equipment is turned on. If steps are not taken to minimize this inrush current, it can damage power devices and reduce equipment life. A safe and cost ...

Description: FREQUENCIES ABOVE 4.5 GHZ are being used more often for a wide range of outdoor communications. These uses include critical infrastructure applications where long lifetime and high availability ...

Description: Coaxial cables are often used for high-frequency signal transmission in applications where there is a risk of lightning energy and damage. This article touches on the most important parameters for the ...

Description: Commercial lightning protectors can protect wireless communications systems for defense and homeland security systems against damaging lightning energy. ...