Televes 90V Surge Arrester
Atmospheric Discharge Protector 90V Televes 4947
The surge arrester is the element that prevents electrical discharges from storms from getting into the installation and reaching the installed elements, for example, mast amplifier, power supplies, broadband control panels, programmable control panels or single-channel headends.
If a lightning strike from the electrical storm hits the antenna, it will cause a voltage surge in the system that will damage all the equipment in the installation. This in case of a community of neighbors, will suppose an important expense of money in repairs to return to enjoy the television services.
The arrester absorbs electricity and drifts it to ground. It is an element for life and an essential for areas with regular storms.
This element needs to be protected from the elements with a 4163 Televes box and at the same time connected to the installation’s ground.
Televes surge arrester up to 90V, for TV installation.
To be inserted in the coaxial cable, just after the antenna, in order to redirect to ground any lightning strikes that could damage the antenna.
What technical specifications does the Televes 4947 surge arrester have?
?Frequency margin Mhz 0-3000
?Insertion losses dB 0.1
?Discharge voltage V 90
?Max. peak power (PEP) W (??) 200
?Max. discharge corrent kA 10
?Nominal current A 10
?Impedance Ohm 75
?Operating temperature ?C -40 … 80
Related products
-
Read moreTELEVES Nevoswitch 9x9x16 CASCADE 9 In 16 Out c/w Output Earth Bar Only 2
Year Warranty *Special Order! NCNR – Check Lead Time* Part of the range of 9 input multiswitches
(8 satellite polarities + Freeview), available in 8, 12, 16, 24 and 32 user
outputs. Expand the number of users by cascading two or more units. Small and
compact design to provide an easy and quick installation. The range includes a 9x line amplifier with
25 dB average gain for Satellite inputs and 27 dB gain for Terrestrial with
DC pass. 75 ohms switch included to
load the unit (standalone) or not (cascade configurations). Highlights: Radiation immune thanks to its
zamak made chassis. All switch references are valid for standalone, star or
cascade configuration. Selectable IF gain (+10 dB) for each group or 8 users
to balance the output signals. Multiple powering options: mains and line
powered. ECO mode: the overall consumption is reduced as the number of users
decreases. Main features: Small sized
design: Make the most of space to accomodate more TV subscribers. Use the
same multiswitch in either star/cascade or standalone configuration.
Independent amplification of every feed (8 satellite plus Freeview). Multiple
powering options: mains and line powered. Adjustable gain and equalization to
achieve the best performance for every system’s requirements. -
Read moreTELEVES Euroswitch 9x9x8 CASCADE 9 In 8 Out c/w Output Earth Bar Only 2 Year
Warranty *Special Order! NCNR – Check Lead Time* Compact multiswitch equipped with 9 inputs
(one terrestrial and 8 for two satellites, each with its four polarities) and
8 user outputs. Thanks to its great
compactness and its optimized electronic design, it presents very low through
and tap losses. This allows to reduce the number of amplifiers needed in the
cascade and to obtain a better balanced signal in the users, even in large
collective installations. Can be used
as a terminal (star topology) or as a cascade by using a simple switch. In
addition, it incorporates a second switch that actives the TForce technology,
which automatically adjusts the terrestrial signal and keep it constant
despite variations in the reception. RED compliant. Main Features: High shielding (A class) thanks to its
manufacture in Zamak Versatile: selector switch to shift between cascade and
terminal modes Low consumption under normal conditions. In addition, ECO mode
reduces consumption as the number of connected users decreases Wide 12-18V
power supply range, making it compatible with most existing systems Current
circulation between all inputs and cascades Input and output colour
identification -
Read moreTELEVES Euroswitch 17x17x8 CASCADE 17 In 8 Out – 2 Year Warranty *Special
Order! NCNR – Check Lead Time* Compact
multiswitch equipped with 17 inputs (one terrestrial and 16 for four
satellites, each with its four polarities) and 8 user outputs. Thanks to its great compactness and its
optimized electronic design, it presents very low through and tap losses.
This allows to reduce the number of amplifiers needed in the cascade and to
obtain a better balanced signal in the users, even in large collective
installations. Can be used as a
terminal (star topology) or as a cascade by using a simple switch. In
addition, it incorporates a second switch that actives the TForce technology,
which automatically adjusts the terrestrial signal and keep it constant
despite variations in the reception. RED compliant Main Features: High shielding (A class) thanks to its
manufacture in Zamak Versatile: selector switch to shift between cascade and
terminal modes Low consumption under normal conditions. In addition, ECO mode
reduces consumption as the number of connected users decreases Wide 12-18V
power supply range, making it compatible with most existing systems Current
circulation between all inputs and cascades Input and output colour
identification -
Read moreTELEVES Euroswitch 9x9x32 CASCADE 9 In 32 Out c/w Output Earth Bar Only 2
Year Warranty *Special Order! NCNR – Check Lead Time* Compact multiswitch equipped with 9 inputs
(one terrestrial and 8 for two satellites, each with its four polarities) and
32 user outputs. Thanks to its great
compactness and its optimized electronic design, it presents very low through
and tap losses. This allows to reduce the number of amplifiers needed in the
cascade and to obtain a better balanced signal in the users, even in large
collective installations. Can be used
as a terminal (star topology) or as a cascade by using a simple switch. In
addition, it incorporates a second switch that actives the TForce technology,
which automatically adjusts the terrestrial signal and keep it constant
despite variations in the reception. RED compliant Main Features: High shielding (A class) thanks to its
manufacture in Zamak Versatile: selector switch to shift between cascade and
terminal modes Low consumption under normal conditions. In addition, ECO mode
reduces consumption as the number of connected users decreases Wide 12-18V
power supply range, making it compatible with most existing systems Current
circulation between all inputs and cascades Input and output colour identification -
Read moreTELEVES Nevoswitch QUAD 9x9x16
CASCADE c/w 1.5A PSU – Receiver or
Line Powered (Earth Bars Not Included) 2 Year Warranty *Special Order! NCNR –
Check Lead Time* Highlights 10 dB Low Gain (LG) / High Gain (HG) switch
for the attenuation of the satellite input signal for each 8-user group
Optimized for Quad LNB thanks to a 22 KHz generator Compatible with
return-channel applications European design, quality, and manufacturing Main features Very compact Made of zamak Input and output
colour identification Available ECO mode Selector switch to shift between cascade
and terminal modes 12 V power supply Low power consumption
Reviews
There are no reviews yet.