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4001651 |
Station lightning arrester with dual rupture diaphragms for gas pressure release
A surge arrester comprising a porcelain body, top and bottom pieces. The porcelain body is hollow and contains gap assemblies in series with negative temperature coefficient resistance blocks. The...
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3973172 |
Surge arrester of the multi-gap type
A surge arrester of the multi-gap type made up of a series of gap units and a non-linear resistance disposed in a conventional porcelain housing. The gap units comprise a series of metal electrodes...
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3967160 |
Electrical overvoltage surge arrester with a long time constant valve section and series gap section
The arrester includes a valve section made up of high current-voltage characteristic exponent metal oxide varistor valve blocks having a relatively high capacitance and a series gap section made up...
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3963965 |
Surge arrester construction
An arrester is provided in a staggered stack of two columns of elements alternately disposed at substantially 90° with respect to each other in successive levels of the columns. Plates of...
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RE28619 |
Unitary series spark gap with aligned apertures
A spark-gap device includes first and second pairs of conductive electrodes supported within first and second insulating spacer means to provide first and second gaps. The gaps are connected in...
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3912965 |
Spark gap device for lightning arrester
A spark gap device for a lightning arrester comprising a first spark gap having a uniform electric field characteristic and a second spark gap connected in parallel with the first spark gap and...
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3859569 |
OVERVOLTAGE SURGE ARRESTER WITH IMPROVED VOLTAGE GRADING CIRCUIT
An overvoltage surge arrester for relatively high voltage applications is provided with a voltage grading circuit comprising a relatively low exponent resistor in parallel with a relatively high...
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3848174 |
HIGH VOLTAGE SOLID-STATE RECTIFIER SYSTEM
A high voltage solid-state rectifier includes multiple series connected ac-compensated diodes and series buffer resistors in a stepped spiral stack. The stack is encased in a sectionalized faraday...
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3767973 |
SHIELDED METAL ENCLOSED LIGHTNING ARRESTER
A high voltage lightning arrester enclosed in a grounded metal enclosure containing a pressurized insulating gas. The arrester is provided with an asymmetrical shield and grading means to control...
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3733521 |
LIGHTNING ARRESTER
A voltage grading arrangement for lightning arresters particularly adapted for use in substations in which the conductors and the lightning arresters are enclosed within grounded metallic...
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3733520 |
MEANS FOR LIMITING THE RESIDUAL LEVEL DURING SUPERIMPOSED OVER-VOLTAGE CONDITIONS IN A SURGE DIVERTER
In a surge diverter, in order to limit the residual level during superimposed over-voltage conditions, a plurality of spark gap stacks with associated non-linear resistors are provided with a shunt...
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3731154 |
SURGE ARRESTER, PREDOMINANTLY FOR POWER TRANSMISSION LINES
The present invention relates to surge arresters for power transmission lines, characterized in that their auxiliary circuits incorporate stabilizing means, such as Zener or avalanche diodes...
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3686532 |
APPARATUS FOR INCREASING THE ARC VOLTAGE IN RELATION TO THE PARTICULAR NUMBER OF SPARK GAPS WHICH DEFINE THE THRESHOLD CHARACTERISTICS IN MAGNETICALLY BLOWN SURGE ARRESTORS
A magnetically blown surge arrester is comprised of a plurality of superposed arc chambers each including a pair of spaced horns providing a sparkover gap. The horns of a lower chamber are provided...
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3683234 |
PROTECTIVE DEVICE COMPRISING A PLURALITY OF SERIALLY CONNECTED SPARK GAPS
1. In a protective device for protecting a facility from damage due to an unexpected increase in the normal voltage on said facility, said protective device comprising a plurality of spark gaps,...
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3678340 |
LIGHTNING ARRESTER AND GAP UNIT THEREFOR
A lightning arrester particularly adapted for extra high voltage AC systems and high voltage DC systems comprising a series of arc gap units and coil assemblies for moving the arcs outwardly. The...
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3676743 |
GAS-DISCHARGE OVERVOLTAGE ARRESTER
A voltage overload arrester comprising a pair of shaped electrodes having surface portions in spaced adjacent relation to each other and gas impermeably sealed within an insulating housing. The...
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3670204 |
SPARK GAP SYSTEM FOR MAGNETICALLY QUENCHED SURGE VOLTAGE ARRESTER
A spark gap system for a surge voltage arrester of the magnetically quenched type is composed of a stack of superposed plates each of which is provided with a recess which defines an arc chamber...
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3662215 |
A TRIGGERING CIRCUIT FOR TRIGGERING SERIES-CONNECTED SPARK GAPS
A chain of series-connected spark gap piles have two grading chains in parallel therewith with connections therebetween. An arrangement is provided for triggering one of the spark gap piles. When...
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3629685 |
STATIC CONVERTER STATION CONNECTED TO A DC TRANSMISSION LINE OVER A DC REACTOR WITH LIGHTNING ARRESTER PROTECTION MEANS
A static converter station connected to a DC transmission line over a DC reactor is provided with lightning arrester protection means which includes a spark gap stack connected to the DC line and...
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3628124 |
VARIABLE OVERVOLTAGE PROTECTION MEANS FOR DC NETWORKS
An overvoltage protection device for a DC transmission line connecting two stations, each station including several series-connected converters each provided with a bypass member, has a series of...
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3577032 |
SERIES GAP LIGHTNING ARRESTER WITH ARC EXTINGUISHING CHAMBERS
This disclosure relates to an overvoltage spark gap protective apparatus having a series of arc gaps each within a spark gap chamber in combination with an outer coil to elongate the arcs. Each...
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3566183 |
LIGHTNING ARRESTER COOLING APPARATUS
A lightning arrester having voltage-grading resistors that generate heat due to leakage currents therethrough, in combination with heat exchanger means adapted to cool the grading resistors and...
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3544847 |
FLIP-FLOP LIGHTNING ARRESTER WITH REDUCED PROTECTIVE LEVEL
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3538387 |
FLIP-FLOP LIGHTNING ARRESTER WITH IMPROVED MEANS FOR PREVENTING PARALLEL OPERATION
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3538388 |
VOLTAGE SURGE DIVERTER
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3535582 |
UNITARY SERIES SPARK GAP WITH ALIGNED APERTURES
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3513354 |
LIGHTNING ARRESTER WITH HIGH SURGE ENERGY ABSORBING CAPABILITY
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3489949 |
LIGHTNING ARRESTER WITH MAIN AND PREIONIZING GAPS
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3418530 |
Electronic crowbar
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3363135 |
Magnetic drive lightning arrester having a variably spaced arcing gap
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3354345 |
Lightning arrester spark gap having arc-confining chamber walls of graded porosity
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3320482 |
Lightning arrester for high energy switching surges
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3313978 |
Surge diverter units comprising spark gaps shunted by resistive blocks
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3263117 |
Spark gap device having an intermediate electrode forming two series spark gaps
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3222566 |
Valve type lightning arrester
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3149263 |
Electric overvoltage arrester with large capacitive spark gap
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3106662 |
Spark gap assembly
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3106661 |
Lightning arrester
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3087094 |
Lightning arrester
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2947903 |
Current interrupting devices
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2928016 |
Lightning arresters
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2922953 |
Surge relief system for watthour meter
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2913626 |
Multiple spark gap arrangement for lighining arresters
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2906922 |
Spark gap unit
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2890389 |
Lightning arrester improvements
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2881357 |
Protective device for high tension transmission lines
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2840766 |
Protective spark gap
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RE09484 |
Title is not available
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3588576 |
Title is not available
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0932541 |
Title is not available
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