special protection for field equipment copyright © 2008 diversified power solutions, llc1

Special Protection for Field Equipment

Copyright © 2008 Diversified Power Solutions, LLC 1

Electrical Issues◦ Surges◦ Lightning◦ Line Drop Over-Voltages◦ Not addressed by UPS systems

Application Issues◦ Restricted Space◦ Multiple voltages, different plugs


Protect Field Equipment from unusual Electrical Problems◦ Quality Surge Protection◦ Line Drop Over Voltage Protection

And at the same time Provide◦ Small Size◦ Universal Voltage◦ Rugged and Reliable


Existing Suppressors don’t meet design requirements◦ None available with Line Drop protection◦ Most are “power strip” type devices◦ None with Universal voltage use (120 or 240)◦ Cases are thin plastic & won’t stand up◦ Most are not reliable for Field installation

They are indoor units


Designed to meet ALL the requirements◦ Internal circuit designed for reliability◦ Line Drop protection standard◦ Quality Surge protection◦ Rugged Case◦ Small Size◦ Flexible outlet configurations


VSS20BH contains special circuitry designed to keep power flowing and protect field equipment◦ Rated for 20 amp loads◦ 120 Volt or 240 Volt universal application◦ Dual mechanical & soldered connections on the

board◦ Heavy industrial input/output cords and

connectors


VSS20BH contains special internal current limiting fuses◦ Dual Current limiting fuses

On both input conductors so line drop events cannot damage your equipment

no weak standard fuses◦ During over voltage events, where high voltage

utility lines come in contact with lower voltage lines, the fuses limit short circuit current and prevent damage to field equipment downstream

Line Drop Fuses


VSS20BH uses our Patented X-coil multi-stage surge suppression◦ First stage Surge Elements remove most incoming

surge energy◦ X-Coil design prevents surge energy from entering

the last stage (US Patent #7,115,085)◦ Final filter Surge Elements remove any remaining

surge energy

X-Coil


VSS20BH Uses Special Surge Elements◦ TMOV metal oxide varistors have excellent

clamping voltage ◦ The TMOV design includes a built in thermal

disconnect Insures in the rare event of failure, the TMOV

disconnects from the circuit without damage No “backdoor” path through ground

◦ Design eliminates potential backdoor surges

TMOVs


VSS20BH Case is a heavy duty cable pull box◦ Plastic- non conductive◦ Not a thin shell, but the same pull box used for

electrical conduit◦ Drop proof: survives 4 foot drop onto concrete

floors with NO damage◦ Liquid tight end fittings to prevent moisture

damage

Rugged Case


VSS20BH Case is strong, but its also compact◦ Designed to fit in tight locations◦ Can be installed side by side in a quad wall box◦ Input cord allows flexibility in tight spaces

Can be ordered in different lengths 3” standard

◦ Output cord length can be ordered to fit 12” standard


VSS20BH available to fit your plug configuration◦ Available with any NEMA plug configuration for

120 or 240 Volt single phase use◦ Standard configurations

5-15 Plug & Receptacle in/out 6-20 Plug % Receptacle in/out

◦ Straight or 90 degree input plugs Standard 90 deg.


Customer Quote:“This past week, Tampa Electric (TECO) was working on

power lines in Oldsmar. Somehow, in the process of their work they managed to drop one of their live 7,200-Volt lines to the ground. Directly below where they were working, we (Bright House Networks) had two Power Supply Cabinets. The High Voltage line made a direct bull's-eye on our equipment. As the Power line hit the ground it did not immediately blow its fuse. The line bounced around on the ground throwing sparks and fire everywhere and made contact with our Cabinets several times. Each time it hit the Power Supply cabinets it instantly melted holes and energized the equipment with thousands of volts and hundreds of Amps. (See pictures below)


Burn marks on the cabinet to the right are from a 7,200 Volt power line.This put 7,200 volts on the metal of the cabinet.


Quote“These pictures only show a small part of the over-all damage to

our Cabinets. When I arrived at the location and saw the damage to the exterior of the

cabinets, I figured that everything inside was toast. Thankfully, I was wrong.

Throughout the entire ordeal our Power Supply equipment continued to operate keeping the cable system online. Our Power supplies did switch over to standby mode once the power company's fuse finally opened and commercial power was lost to our equipment. During this event the cable system never failed to keep operating.

Each of our Power supply units was protected by Diversified Power's VSS-20BH surge protectors. The only damage to any of the electronic equipment was one of the Surge Protector units was burnt up as you can see in the picture below. Had the equipment not been protected by the surge protectors, there is a high likely hood that all three Power supply unit would have been destroyed. Costing the company thousands of dollars”


This is the damaged VSS20BH. It sacrificed itself to protect the field equipment!


“Throughout the entire ordeal our Power Supply equipment continued to operate keeping the cable system online.”

“We put a few VSS20BH units on our most troublesome sites. They worked great and eliminated the problems. Based on that, we put VSS20BH units on ALL of our sites


special protection for field equipment copyright © 2008 diversified power solutions, llc1

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