Does a Type 1 SPD perform better than a Type 2 SPD?

2018-01-12T16:01:46+00:00

Not necessarily. A Type 1 SPD offers versatility by being able to be connected to either side of service entrance, however UL does not compare the surge clamping performance of a Type 1 SPD versus that of a Type 2 SPD. UL investigates clamping performance of all SPDs equally, without regard for SPD type. UL [...]

Does a Type 1 SPD perform better than a Type 2 SPD? 2018-01-12T16:01:46+00:00

Why do SPD manufacturers no longer describe their products as TVSS?

2018-01-12T15:59:06+00:00

TVSS devices have always belonged to a larger family of surge suppression devices known as SPDs (Surge Protective Devices). Beginning with UL 1449 3rd Edition and the 2008 National Electrical Code, the term “SPD” has formally replaced the terms “TVSS” and “Secondary Surge Arrester”. SPDs are now classified as Type 1, Type 2, Type 3 or Type 4 and [...]

Why do SPD manufacturers no longer describe their products as TVSS? 2018-01-12T15:59:06+00:00

Where Can I Place SPDs to Protect My Facility?

2018-01-05T15:24:01+00:00

It is impossible to prevent voltage surges from either entering your facility or from occurring inside of your facility. When protecting a facility against transients, the best approach is a networked or cascaded approach. As shown in the graphic below, The Institute of Electrical and Electronics Engineers (IEEE) has developed three categories that every facility [...]

Where Can I Place SPDs to Protect My Facility? 2018-01-05T15:24:01+00:00

How do I select a proper Prosurge SPD for my application?

2018-01-05T15:18:39+00:00

Though we try our best to offer an extensive, thorough product presentation on our website, catalogs and other documents, we believe the best way for model selecting is to consult with us with your requirement and then our professional will recommend a suitable model.

How do I select a proper Prosurge SPD for my application? 2018-01-05T15:18:39+00:00

What are ANSI/UL 1449 Third Edition Versus IEC 61643-1 – Key Differences In Testing

2018-01-05T15:01:36+00:00

The following examines a few of the key differences between Underwriters Laboratory(UL)’s required test for surge protective devices (SPDs); ANSI/UL 1449 Third Edition and the International Electrotechnical Commission (IEC) required test for SPDs, IEC 61643-1. Short Circuit Current Rating (SCCR): The capacity of current with which the tested SPD can withstand at the terminals where [...]

What are ANSI/UL 1449 Third Edition Versus IEC 61643-1 – Key Differences In Testing 2018-01-05T15:01:36+00:00

How to choose the correct surge protection device that must be installed?

2018-01-05T14:54:40+00:00

Choosing the right surge arrester(s) is a key factor to guarantee correct protection of the installation. A poorly designed Lightning & Surge protection system may lead to early ageing of the SPD and potential failure of the protective devices in the installation allowing damage to the primary systems up stream, thus defeating the rationale behind [...]

How to choose the correct surge protection device that must be installed? 2018-01-05T14:54:40+00:00

Can lightning destroy the photovoltaic system?

2018-01-05T14:50:27+00:00

Photovoltaic systems are technologically highly sensitive and a direct lightning strike would definitely destroy it. There is also yet another hazard,as a lightning strike could create surge voltage near the solar power system and these surge voltages can also destroy the system. The inverter is the primary point in need of protection. Usually, inverters will [...]

Can lightning destroy the photovoltaic system? 2018-01-05T14:50:27+00:00

Are joule ratings a specification used for SPD?

2018-01-05T14:48:57+00:00

In the past, some manufacturers have used joule ratings in their specifications. They are not considered a good indicator for SPD performance and not recognized by any standard organizations. Prosurge doesn’t support this specification also.

Are joule ratings a specification used for SPD? 2018-01-05T14:48:57+00:00

Is “Response Time”a valid specification?

2018-01-05T14:47:05+00:00

Response time specifications are not supported by any standards organizations overseeing Surge Protective Devices.IEEE C62.62 Standard Test Specification for SPDs specifically mentions it should not be used as a specification.

Is “Response Time”a valid specification? 2018-01-05T14:47:05+00:00

What’re the different power systems in the US and their protection needs?

2018-01-05T14:44:45+00:00

The US power distribution system is a TN-C-S system. This implies that the Neutral and Ground conductors are bonded at the service entrance of each, and every, facility or separately derived sub-system. This means that the neutral-to-ground (N-G) protection mode within a multi-mode SPD installed at the service entrance panel is basically redundant. Further from [...]

What’re the different power systems in the US and their protection needs? 2018-01-05T14:44:45+00:00