Dubuque, IA Free Moderated Classifieds Site > OLD ADS FROM PREVIOUS YEARS
> 2001
> October
> New line switch 38KV 900A firon tw 34900
New line switch 38KV 900A firon tw 34900
High voltage, high current, Electrical utility, line tension switch.
FIRON Line Switch, 900A 38kV. 230kV BIL, MOM. 40 kA
The manufacturer is currently out of stock and has an 11 week lead time, but you can get this one NOW.
The Firon line tension switch is ideal where line sectionalizing is required; it eliminates the need for pole mounted switches and reduces "pole clutter". With a tested momentary of 40kA RMS(asymmetrical) and a current rating of 900 amps continuous.
The design voltage ratings use the superior Silicone type insulators as the mounting base.
Line connections are made through the flat, two hole Nema pads with hexagon bolt depressions cast in place. These depressions enable the lineman to use a single wrench for the installation of various connectors.
The hinge and jaw assemblies are constructed from tin plated, electrical grade cast aluminum with nickel plated copper contacts, over-plated with silver. The jaw assembly contacts are backed up with stainless steel pressure plates. the jaw and hinge castings have an IACS conductivity percentage rating approximately twicethat of bronze used on similar type switches today. The blade is manufactured from a square hollow section aluminum tubing, 6101-T6 to provide the maximum in strength and rigidity, far surpassing the parallel or twin blade construction. Both jaw and hinge ends are equipped with nickel/silver plated copper contacts. All of the current carrying components are assembled using 18-8 (304), stainless steel fasteners.
Heavy duty galvanized steel Loadbusterâ„¢ hook is fastened to the jaw assembly with stainless steel fasteners.
Two blade openings are available: 90 degrees and 180 degrees, the standard is a 180 degree opening, which is recommended for line switches. If a 90 degree blade opening is required, it should be requested at the time of order placement.
With the large tin plated, bronze pull ring located beyond the end of the switch blade, the switch in operation requires minimum effort to open or close (maximum leverage) and also provides the ultimate in operator control. A slight pull on the operating ring, transfers motion to the protected, tin plated spring-loaded latch, which initiates a pry out or ice breaking action to assist opening of the switch. The spring-loaded latch provides the security of blade closure retention when exposed to short circuit currents and vibration.
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