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19-01-2010 // TPMOV ® Technology by Ferraz Shawmut in video
View this 80-second video clip to better understand how our patented TPMOV® Technology provides outstanding, safe and reliable features to our Surge-Trap® Surge Protective Devices for the protection of both AC & DC sides in solar PV installations. ...
16-12-2009 // Brand-new protections for solar photovoltaic
Our offering has never ceased extending since we committed in providing safety to renewable powers. From now on Ferraz Shawmut can stand for 'Offering protection from solar cells up to the grid'. When selecting the Helio Protection solutions, soalr ...
09-12-2009 // TrueDC Switch Disconnectors
Helio Switch switch-disconnectors comply with IEC 60947-3 and VDE 0660 part 107. - They are true-DC switches especially designed for solar PV applications. - The rated insulation voltage of our Helio Switch is 1000 VDC in accordance to IEC 60367-7 ...
26-08-2009 // Short Circuit Withstand Tests - UL vs IEC
Short circuit tests on the same model of our Surge Trap® surge suppressor devices give significantly different results when the product is tested as per IEC standard 61643-1 than when UL 1449, 3rd edition, is followed. For instance, our STP230TN1M m ...
24-07-2009 // Brand-new version of our Helio Protection Program brochure
Solar PV market is really booming! We adjust and improve our dedicated offering daily. We've just published a brand-new version of our Helio Protection Program brochure. Consider it as the last updated technical information on our components and syst ...
20-07-2009 // Surge Trap® SPDS benefit from TPMOV® Technology inside
Metal Oxide Varistor (MOV) is a sintered-ceramic electronic component with a U-I non linear characteristic. When crossed by a too high transient current or subjected to repetitive surge currents the MOV shorts. Due to a runaway process inside the ce ...
18-05-2009 // New Helio Switch with lower ratings
Our new Helio Switches complete the offering introduced last November. These new models are specifically designed for solar photovoltaic applications. They have lower ratings (from 32A to 80A)compared to the first Helio Switch (lying from 160A to 400 ...
14-05-2009 // Brand-new version of Helio Protection Program brochure
We published a new version of the brochure introducing our Helio Protection Program (ref HE002). New and improved solutions join the program such as: - new ratings for Helio Fuse DC10 - 1000V DC-rated Modulostar Helio fuse holder for 10x38mm fuses ...
15-04-2009 // New line of Surge Protective Devices complying with IEC
As expert in innovative solutions for electrical protection, Ferraz Shawmut designed TPMOV® technology : a protection shield against consequences of the thermal runaway of the Metal Oxide Varistor. With this patented technology fully under control a ...
13-03-2009 // Technical Data for Helio Fuse DC10 10x85mm
We publish complementary technical data on our Helio Fuse DC10 (size 10x85 mm) introduced in our Helio Protection brochure (HE002). For more information download the pdf technical data sheet ...
20-02-2009 // Surge Trap - The failsafe Surge Protective Device
Download the video ...
29-01-2009 // Extension to IEC of the Surge Trap® failsafe no-fuse surge suppressor range
Surge-Trap® is a high-tech protection solution Surge-Trap® offers patented TPMOV technology that offers fail-safe technology that allows for higher safety ratings and protection. Surge-Trap® is cost effective Surge-Trap® does not require fuses, ...
11-12-2008 // Got a solar array to protect? Not just any fuse will do!
PV cells and panels are d.c. generators. Whenever an array brings together 4 strings of modules or more, fault current can be high enough to heat and damage the insulation. Since solar arrays are not grounded, each string must be protected by a fuse ...
03-12-2008 // Why automatic disconnecting of surge protective devices is essential?
Fault currents coming from solar cells are too much low to blow disconnecting fuse in series with SPDs (Surge Protective Devices). Most of users don't install this kind of fuses. Standard SPDs are unable to disconnect by themselves then their temper ...
26-11-2008 // An information form to determine how to protect solar arrays
We publish a Word-formatted form giving the necessary information to determine the most appropriate protection for your photovoltaic equipment. You have to answer to a few questions relative to the type of solar array , the total capacity,the wiring ...
25-11-2008 // New Helio Switch switch-disconnectors
These compact-size Helio Switch switch-disconnectors are used in isolating a group of solar panels strings or as the main switch for a complete solar power system. The range lies from 160 to 400 Amps with a 1000VDC voltage rating for the four higher ...
06-11-2008 // Disconnects impact the total output of solar arrays
Solar cells are current generators with very low short circuit characteristics (approximately 115 to 120% of the output current). That current is proportional to solar radiation, i.e. virtually nil at night, very weak at sunrise and sunset, average ...
04-11-2008 // Surge Trap protective devices (SPDs) can fit Helio Box
Surge Trap surge protective devices are designed around a thermally-protected Metal Oxyde Varistor (MOV). The varistances of this technology can fail under two main conditions: thermal runaway or short-circuit. The MOVs are slightly degraded when age ...

Ferraz Shawmut is committed to protecting photovoltaic installations

Photovoltaics as power source is very booming. By 2020 installed capacity in solar power is expected to be near 300 GW. Generating electricity from this available energy source is an extremely reliable process – as long as it’s properly protected !

Any installation, whether it’s a stand-alone solar array with a back-up generator set or a grid-connected one, is vulnerable to fault currents or lightning. Today fuses and surge arresters are the most effective ways of protecting the wiring and all the electrical equipment in a PV system. But that protection must be designed, dimensioned, tested and adapted to the specific features of solar applications. At Ferraz Shawmut, the specialist in protection specially designed for power generation and distribution, we are showing our commitment to the development of solar power with a dedicated range of products: junction boxes, fuses and surge arresters. Fuses shield the cables between strings of modules from damage. The faulty circuits are isolated and the system can keep on generating power.

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