Abstract
A high voltage motor operated in-line double break disconnect switch suspended by an electric power line conductor wherein the switch includes a horizontally rotating switch blade, that is suspended by a motor output shaft attached to the midpoint of a blade of the switch blade to balance the blade. A communication system for controlling the motor including a switch mounted radio which may be controlled by another radio located at a distance and powered by a solar charged battery or alternatively controlled by a hand-held controller. The motorized in-line double break disconnect switch may also be arranged in a three phase installation in a two-way or three-way switching arrangement attached to a utility pole or other structure. The communication system controlled motorized in line double break disconnect switch may in addition be arranged in a phase over phase switching arrangement supported by a utility pole or other structure.
Claims
1. A high voltage in-line motorized double break disconnect switch operatively supported and suspended by and mounted in-line with an electric power line conductor, the high voltage in-line double break disconnect switch having an open non-conductive position and a closed conductive position, the high voltage in-line double break disconnect switch comprising: a pair of ganged coaxially aligned elongated strain insulators operatively supported and suspended by and between a first cut end and a second cut end of the electric power line conductor or by and between the first cut end of the electric power line conductor and a third elongated strain insulator, an elongated horizontally rotating switch blade extending in the closed conductive position in parallel spaced relationship with and supported by the pair of ganged coaxially aligned elongated strain insulators, a first of the ganged coaxially aligned elongated strain insulators having a first end supported and attached to the first cut end of the electric power line conductor, a second of the ganged coaxially aligned elongated strain insulators having a first end supported and attached to a second cut end of the electric power line conductor or to the third elongated strain insulator, each of the ganged pair of elongated strain insulators having a second end thereof retained and supported by a mechanical tie connection member, a motor operatively mounted and supported by the mechanical tie connection member, the motor in operative arrangement with a vertical output shaft configured to pass through at least one opening in the mechanical tie connection member, an output end of the vertical output motor shaft attached to the elongated switch blade at a midpoint of a longitudinal length of the elongated switch blade, a first break jaw attached to and in operative arrangement with the first of the elongated strain insulators at the first end thereof, a second break jaw attached to and in operative arrangement with the second of the elongated strain insulators at the first end thereof, the first break jaw including a first terminal in operative electrical circuit arrangement with the first cut end of the electric power line conductor, the second break jaw including a second terminal in operative electrical circuit arrangement with the second cut end of the electric power line conductor or with a jumper conductor, the first break jaw configured to make electrical and physical contact with one end of the elongated switch blade upon closing of the elongated switch blade, the second break jaw configured to make electrical and physical contact with an other end of the elongated switch blade upon closing of the elongated switch blade, the motor configured to horizontally rotate the elongated horizontally rotating elongated switch blade upon actuation of the motor into operative electric closed circuit arrangement simultaneously with the first break jaw contact and the second break jaw contact in the closed conductive switch position and the motor configured to horizontally rotate the elongated rotating switch blade via the vertical motor output shaft upon actuation of the motor out of operative electric closed circuit arrangement with the first break jaw contact and the second break jaw contact into the open non-conductive switch position, a communication system including a plurality of communication devices configured to actuate the motor as desired to horizontally rotate the elongated rotating switch blade via the vertical motor output shaft into operative electric closed circuit arrangement with the first break jaw contact and the second break jaw contact in the closed conductive switch position and to horizontally rotate the elongated rotating switch blade via the vertical motor output shaft out of operative electric closed circuit arrangement with the first break jaw contact and the second break jaw contact into the open non-conductive switch position, and, an energy supply configured to power the motor and the communication system.
2. The conductor suspended high voltage in-line double break disconnect switch of claim 1, wherein the mechanical tie connection member comprises an upper insulator tie plate and a lower insulator tie plate, wherein the pair of ganged elongated strain insulators having the second end of each of the pair of ganged elongated strain insulators operatively retained between the upper insulator tie plate and the lower insulator tie plate.
3. The conductor suspended high voltage in-line double break disconnect switch of claim 2, wherein the upper insulator tie plate having a first opening and the second insulator tie plate having a second opening operatively aligned with the first opening of the upper insulator tie plate, the vertical motor output shaft configured to pass through the first opening and the second opening.
4. The conductor suspended high voltage in-line double break disconnect switch of claim 1, wherein the switch blade comprises a top blade and an oppositely disposed bottom blade in parallel spaced relationship with the top blade.
5. The conductor suspended high voltage in-line double break disconnect switch of claim 4, wherein the vertical motor output shaft is operatively attached to the top blade midway between the one end and the other end of the switch blade.
6. The conductor suspended high voltage in-line double break disconnect switch of claim 1, wherein the plurality of communication devices includes three switch mounted short range radios configured to operate three switches of a three phase circuit in unison or separately.
7. The conductor suspended high voltage in-line double break disconnect switch of claim 6, further including a long range radio operatively mounted on one of the three switches configured to communicate with a utility control room long range radio to command an open or close operation of the switches.
8. The conductor suspended high voltage in-line double break disconnect switch of claim 7, wherein a ground level enclosure includes a ground level long range radio configured to communicate with the utility control room long range radio and to communicate with the switch mounted long range radio to command the open or close operation of the switches for operating a three phase switch arrangement.
9. The conductor suspended high voltage in-line double break disconnect switch of claim 8, wherein at least one solar panel is mounted at ground level and configured to power a ground level battery and the ground level long range radio.
10. The conductor suspended high voltage in-line double break disconnect switch of claim 6, wherein the communication system further includes a remote terminal unit configured to translate a radio signal to operate an electric control circuit to actuate a motor motion.
11. The conductor suspended high voltage in-line double break disconnect switch of claim 6, wherein the plurality of communication devices includes a portable wireless hand-held control box including a control box mounted radio configured to communicate with each of the three switch mounted short range radios to operate each of the three of the high voltage in-line double break disconnect switches of the three phase circuit to open or close each of the high voltage in-line double break disconnect switches as desired.
12. The conductor suspended high voltage in-line double break disconnect switch of claim 1, wherein the energy supply comprises at least one solar charged battery connected in operative arrangement with the motor and the communication system.
13. The conductor suspended high voltage in-line double break disconnect switch of claim 12, wherein the energy supply further comprises at least one solar panel connected in operative arrangement with the at least one solar charged battery, the motor and the communication system.
14. The conductor suspended high voltage in-line double break disconnect switch of claim 13, further comprising a current transformer configured to charge a battery in operative arrangement with the at least one solar charged battery.
15. The conductor suspended high voltage in-line double break disconnect switch of claim 1, wherein the motor includes a first shaft configured to be coupled to a worm drive.
16. The conductor suspended high voltage in-line double break disconnect switch of claim 15, wherein the worm drive includes a worm screw carried on the motor first shaft and a worm gear carried on the vertical motor output shaft in operative relationship with the worm screw to open and close the switch blade.
17. The conductor suspended high voltage in-line double break disconnect switch of claim 16, wherein a manual operating eye ring is operatively attached to the worm screw.
18. The conductor suspended high voltage in-line double break disconnect switch of claim 16, further including a motor housing adapted to fit over the motor and operatively attached to the mechanical tie connection member.
19. The conductor suspended high voltage in-line double break disconnect switch of claim 18, further including at least one solar panel operatively attached to the motor housing.
20. The conductor suspended high voltage in-line double break disconnect switch of claim 1, further including an arc extinguishing device including a vacuum interrupter operatively attached to the switch and configured to be actuated by the horizontally rotating switch blade.
21. A switching arrangement for a high voltage electric utility three phase system, including three high voltage in-line communication system controlled motorized double break disconnect switches per phase of claim 1, each of the three switches at one end thereof operatively supported and suspended by and mounted in-line with one end of three electric power line conductors, and the other end of each of the three switches suspended by a third elongated strain insulator connected to a pole or other structure, each of the conductor suspended high voltage in-line motorized double break disconnect switches operatively mounted in one of the three phases configured to form a three phase three way switch array, a jumper conductor configured to electrically connect the three switches together so that opening or closing any one switch allows power to be sent in three different directions from multiple sources operatively mounted between the other end of each of the conductor suspended high voltage motorized in-line double break disconnect switches.
22. The switching arrangement for the high voltage electric utility three phase system of claim 21, wherein there is a two switch array instead of the three switch array configured to allow power to be sent in two directions from one source.
23. The switching arrangement for the high voltage electric utility three phase system of claim 22, wherein the jumper conductor is configured to electrically connect the two switches together to the one source instead of three switches so that opening or closing any one switch allows power to be sent in two different directions from the one source.
24. The switching arrangement for the high voltage electric utility three phase system of claim 22, wherein each of the double break switches further include an arc extinguishing device including a vacuum interrupter operatively attached to the switch and configured to be actuated by the elongated rotating switch blade.
25. The switching arrangement for the high voltage electric utility three phase system of claim 22, further including at least one solar panel operatively attached to a motor housing.
26. The switching arrangement for the high voltage electric utility three phase system of claim 21, wherein each of the double break switches further include an arc extinguishing device including a vacuum interrupter operatively attached to the switch and configured to be actuated by the elongated rotating switch blade.
27. The switching arrangement for the high voltage electric utility three phase system of claim 21, further including at least one solar panel operatively attached to a motor housing.
28. A three way or two way switching arrangement for a high voltage electric utility three phase system comprising three phases, each of the phases including respectively the three way or two way switching arrangement including respectively three or two radio controlled motorized in-line double break disconnect switches as claimed in claim 1, each of the switches including an elongated horizontally rotating switch blade and a motor for actuation of the switch blade operatively controlled by a short range radio, each of the switching arrangements including a first long range radio mounted to one of the switches in operative communication with a utility control room radio, each of the radio controlled motorized in-line double break disconnect switches including a ganged pair of coaxially aligned elongated strain insulators in supportive relationship with the elongated horizontally rotating switch blade, the motor in operative relationship with the elongated horizontally rotating switch blade, the three way or two way switching arrangements are mounted in switch arrays to a utility pole or structure in a phase over phase relationship.
29. The three way or two way switching arrangement for the high voltage electric utility three phase system of claim 28, wherein each of the in-line double break disconnect switches further includes an arc extinguishing device including a vacuum interrupter operatively attached to the switch.
30. The three way or two way switching arrangement for the high voltage electric utility three phase system of claim 28, further including at least one solar panel operatively attached to a motor housing.
31. The three way or two way switching arrangement for the high voltage electric utility three phase system of claim 28, further including a third strain insulator per respective in-line double break disconnect switch, the third strain insulator for each respective in-line disconnect switch is affixed at one end to the utility pole or structure and at the other end to the second strain insulator for the respective in-line double break disconnect switch, wherein the other end of the third strain insulator is configured to replace one of the two cut ends of the electric power line conductor for supporting and suspending the respective in-line double break disconnect switch and the two way or three way switches are electrically connected by jumper conductors so that power can be routed in two or three directions.
32. The three way or two way switching arrangement for the high voltage electric utility three phase system of claim 31, further including conductors operatively attached between switch terminals of each of the respective switches for carrying electric power line current.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) FIG. 1 is a perspective view of the motorized in-line double break high voltage disconnect switch with a horizontally rotating switch blade of the present invention with the solar panels and long range and short range antennas shown and the switch shown in the closed position;
(2) FIG. 2 is the same switch shown in FIG. 1 with the switch open;
(3) FIG. 3 is a view of the same switch shown in FIG. 1 looking up from the ground to the underside of the switch;
(4) FIG. 4 is same as FIG. 3 but with the switch open;
(5) FIG. 5 is a partial frontal view of the in-line double break disconnect switch shown in FIGS. 1, 2, 3 and 4 of the present invention showing the components mounted within the housing with the front panel removed;
(6) FIG. 6 is a perspective view of an in-line double break disconnect switch of the present invention carrying a vacuum interrupter, showing the switch in the closed position;
(7) FIG. 7 is the same as FIG. 6 but the switch is partially open;
(8) FIG. 8 is the same as FIG. 6 but the switch is completely open;
(9) FIG. 9 is a schematic showing the present invention for the radio control embodiment with phases A, B, and C of the electric system in an end view with communication to a utility control room;
(10) FIG. 10 is the same as FIG. 9, but a larger solar panel and the higher power long range radio and larger battery are disposed at ground level within a ground level enclosure and also shown is the utility control room for communication to the ground level enclosure;
(11) FIG. 11 is a schematic showing the present invention for the hand-held controller embodiment with phases A, B, and C of the electric system in an end view;
(12) FIG. 12 is a perspective view of one phase of the 3-way switching arrangement of the present invention supported by a utility pole with two switches closed and one switch open each carrying a vacuum interrupter;
(13) FIG. 13 is a perspective view of one phase of the 2-way switching arrangement of the present invention supported by a utility pole with one switch closed and one switch open carrying vacuum interrupters and a conductor to transmit power to either switch; and,
(14) FIG. 14 is a perspective view of a three phase, phase over phase, 3-way switching arrangement utilizing three in-line double break disconnect switches per phase each switch shown in the closed position and each carrying a vacuum interrupter;
DETAILED DESCRIPTION OF THE PARTICULAR EMBODIMENTS
(15) With reference to FIGS. 1-4, there is shown a radio controlled motorized in-line high voltage double break disconnect switch 10 of the present invention operatively suspended by and between cable conductors 12a, 12b of the transmission line conductor 120. With reference to FIG. 1, the in-line double break disconnect switch 10 of the present invention includes a pair of ganged elongated coaxially aligned polymer strain insulators 14a, 14b. As can be seen in FIG. 4, the first polymer insulator 14a has mounted at its respective first end 25a and second end 25b first chain eye fittings 18a, 18b. The second polymer insulator 14b has mounted at its respective first end 27a and second end 27b second chain eye fittings 20a, 20b. The chain eye fittings 18a, 20a are attached respectively by clevises 46a, 46b and dead-end fittings 48a, 48b for respectively mounting each cut end of the transmission line 120, i.e., cable conductor 12a, 12b to the respective polymer insulator 14a, 14b which together carry the strain load of the transmission line. The in-line high voltage double break disconnect switch 10 of the present invention as a result hangs on and is suspended by the transmission line 120.
(16) As shown by reference to FIGS. 1 and 5, the ganged elongated polymer strain insulators 14a, 14b are coaxially aligned with one another along axis X of the switch 10. They are joined to each other by being mounted to a mechanical tie connection member 11. The mechanical tie connection member 11 can comprise an upper insulator tie plate 16a and a lower insulator tie plate 16b. The ganged polymer strain insulators 14a, 14b are mounted between upper insulator tie plate 16a and lower insulator tie plate 16b. Insulators 14a and 14b also are secured to plate 16a by multiple U-bolts 15a and 15b. FIG. 3 and FIG. 4 show the U-bolts 15a and 15b also connect the mounting brackets 82a and 82b to the opposite end of insulators 14a and 14b. The upper tie plate 16a supports a motor housing 30 that houses a motor 32 and other control and communication components described subsequently. As seen in FIG. 5, the motor 32 is carried on a motor mounting plate 31 secured by bolts 33 to plate 16a. The motor 32 may be a type AC/DC having a horsepower rating, for example. A long horizontally rotating switch blade 34 is provided and includes a top blade 36a and an oppositely disposed bottom blade 36b positioned parallel to the top blade 36a. The top blade 36a is attached to the bottom blade 36b by blade connecting pins 39, as shown in FIG. 5 and FIG. 4. The top blade 36a, bottom blade 36b and blade connecting pins 39 are all preferably made of copper or stainless steel. The long horizontally rotating switch blade 34 is supported by a vertical motor output shaft 38 that is driven by the motor 32. The motor output shaft 38 is mounted to the top plate 44 of the top blade 36a with the Y axis thereof passing midway between longitudinal ends 40a, 40b of the switch blade 34 as shown in FIG. 4. The long switch blade 34 is therefore gravitationally balanced and horizontally rotatable by the motor output shaft 38 for final opening in an open non-conductive position, such as shown, in FIG. 4, 90 degrees to the transmission line cable conductors, 12a, 12b. For final closing in a closed conductive position it is aligned at 0 degrees to the transmission line cable conductors, 12a, 12b and spaced parallel to them. As a result of this arrangement the weight of the long switch blade 34 is counter balanced during opening of the switch and prevents tilting of the switch blade 34 vertically. As can be seen from FIG. 4, with the switch open, the weight of left section 54a of the long switch blade 34 counter balances the weight of the right section 54b, thus eliminating the prior art problem of rolling of the switch about the conductor 120.
(17) Referring to FIG. 5, the switch blade 34 of the in-line double break switch 10 includes a worm gear drive 70 which includes a worm screw 72 mounted to motor shaft 35. The worm screw 72 is coupled to and activated by the switch motor 32. A worm gear 74 is operatively attached to the motor output shaft 38. When the in-line switch mounted motor 32 is energized the worm gear 74 rotates causing rotation of the long switch blade 34 about the axis Y of the motor output shaft 38 to fully open or close the switch 10, see FIG. 4.
(18) As can be seen in FIG. 4, the motor output shaft 38 passes through first motor shaft aperture 42a in the upper insulator tie plate 16a. The motor output shaft 38 then passes through the second motor shaft aperture 42b in the lower insulator tie plate 16b. The motor output shaft 38 is attached to a top blade plate 44. The top blade plate 44 is attached to top blade 36a as shown in FIG. 5.
(19) As can be seen in FIG. 5. a first insulator retaining pin 22a is mounted to the upper insulator tie plate 16a and extends through a first chain eye aperture 24a in the first chain eye fitting 18b. The first insulator retaining pin 22a then extends through a hole in first lower insulator tie plate 16b. The first insulator retaining pin 22a may be threaded at the end that passes through the first lower insulator tie plate 16b. First nut 28a engages the threading of first insulator retaining pin 22a. Likewise, a second insulator retaining pin 22b is mounted to the upper tie plate 16a and extends through a second chain eye aperture 24b in the second insulator chain eye fitting 20b. The second insulator retaining pin 22b then extends through a hole in the second lower insulator tie plate 16b. The second insulator retaining pin 22b may also be threaded at the end that passes through the hole in the second lower insulator tie plate 16b, as shown in FIG. 5. Second nut 28b engages the threading of the second insulator retaining pin 22b.
(20) The in-line double break disconnect switch 10 of the present invention also includes a pair of break jaws 50a, 50b, as shown in FIG. 3. Each break jaw 50a, 50b makes electrical and physical contact with the switch blade at top blade 36a and bottom blade 36b contact area of the long switch blade 34 upon closing of the long switch blade 34, as can be seen by reference to FIGS. 1 and 2, for example. The double break switch 10 also includes jumpers 37a, 37b. Jumper 37a is attached in circuit between the one cable conductor 12a and one break jaw terminal 51a. The other jumper 37b is attached in circuit between the other cable conductor 12b and the other break jaw terminal 51b.
(21) At both ends of blade 34 of the switch 10 is mounted respectively moving arc horns 78a, 78b, as can be seen in FIG. 2. The moving arc horns 78a, 78b are configured to respectively and operatively contact stationary arc horns 80a, 80b. As seen in FIG. 3, one stationary arc horn 80a is mounted to one mounting bracket 82a and the other stationary arc horn 80b is mounted to another mounting bracket 82b. The break jaw terminals 51a, 51b are also respectively mounted to mounting brackets 82a, 82b as can be seen by reference to FIG. 3, for example. Ice shields 84a and 84b are desirably included to shield the break jaws 50a, 50b from ice build up that would impair switch opening and closing. One ice shield 84a is preferably mounted over the one break jaw 50a and the other ice shield 84b is mounted over the other break jaw 50b as shown in FIG. 3. The one mounting bracket 82b supports the one ice shield 84b and the other mounting bracket 82a supports the other ice shield 84a as shown in FIG. 3 and FIG. 4.
(22) FIG. 5 shows the radio controlled motorized in-line high voltage double break disconnect switch 10 of the present invention with the housing 30 having a front panel 58a removed to expose the interior of the housing 30. The radio controlled motorized in-line double break switch 10 may include a communication system 59. The communication system 59 may in one embodiment include a high power radio 60 and a low power radio 62 which can be mounted in the housing 30 as shown in FIG. 5. The high power radio 60 in one embodiment can communicate directly with a utility control room 105 with high power radio 106 as shown in FIG. 10 via antenna 108. The switch mounted high power radio 60 can receive a command from high power radio 106 to operate the motor 32 to open or close the switch 10. Alternatively, as mentioned previously, a hookstick, not shown in the drawings, can also be used to operate the switch by manually engaging an eye ring 64 shown in FIG. 1 to rotate the motor shaft 38. The eye ring 64 is operatively attached to the worm screw 72 so that the motor shaft 38 may still be manually turned with a hookstick or hot stick, not shown in the drawings, that engages the eye ring 64. This inclusion of the eye ring 64 is desirable in case the motorized portion of the switch is inoperable electrically.
(23) The double break switch 10 preferably includes a solar charged switch mounted battery 66 for powering the motor 32, the switch mounted high power radio 60, if used, and low power radio 62 as shown in FIG. 5. A fuse 76 may also be housed in the housing for protecting the motor circuit. The solar charged switch mounted battery 66 also powers a remote terminal unit 71, i.e. RTU device, mounted to power board 68. A remote terminal unit (RTU) such as manufactured and sold by Cleaveland/Price Inc. as model no. RTU 3212 may be used for this application. A solar panel 86 is mounted on the housing 30 such as shown in FIG. 5 and is used for charging the battery 66.
(24) FIG. 6 is a perspective view of an in-line double break disconnect switch 10 of the present invention carrying a vacuum interrupter 87 showing the switch 10 in the closed position. FIG. 7 is the same as FIG. 6 with the switch 10 partially open. FIG. 8 is the same as FIG. 6 but the switch is completely open. The vacuum interrupter 87 is attached proximate to the mounting bracket 82a. A spring loaded arc horn assembly 91a is attached at the opposite end of the switch 10 to mounting bracket 82b. As can seen in FIG. 7, as the switch blade 34 opens, moving arc horn 78a contacts trip arm 89 of the vacuum interrupter 87. At the same time, moving arc horn 78b contacts spring loaded arc horn bar 91b which follows the blade 34 as it opens. Also attached proximate to the mounting bracket 82a is a counter balance weight 93 for balancing the weight of the vacuum interrupter 87, which puts a torsional load on the cable conductor 12a. Such a vacuum interrupter device including multiple vacuum bottles connected in series circuit arrangement to extinguish an arc are well known, such as described in U.S. Pat. No.: 4,492,835 to John L. Turner, issued Jan. 8, 1985. As the blade 34 rotates the trip arm 89 of the vacuum interrupter 87 is contacted by the moving arc horn 78a for tripping the internal mechanism of the vacuum interrupter 87 and while likewise the spring loaded arc horn bar 91b is contacted by the moving arc horn 78b for maintaining the electric current path through the vacuum interrupter 87 until the vacuum interrupter 87 trips open the circuit. The internal mechanism of the vacuum interrupter 87 is not shown in the drawings. The housing 92 of the vacuum interrupter 87 contains the internal mechanism, that actuates the vacuum bottles, not shown in the drawings, contained within the housing 92 to interrupt the current flowing through conductor 120. After interruption occurs, continued rotation of blade 34, as shown in FIG. 8, allows spring loaded trip arm 89 and spring loaded arc horn bar 91b to return to their initial position ready for close operation.
(25) FIG. 9 shows schematically elevation views of three radio controlled motorized in-line double break disconnect switches 10 of the present invention. The double break disconnect switch 10 of this embodiment is operatively arranged in each of the phases A, B, and C of an electric utility system. Each switch 10 of the three phases A, B, and C may contain, as mentioned, a switch mounted low power radio 62, as also shown in FIG. 5, which utilizes attached low power radio antenna 88, shown in FIG. 1 also, (actually mounted to the front panel 58aremoved in FIG. 5 to show interior components) to communicate with the other phases. Also, one of the switches 10 is provided with a high power radio 60 and a first high power antenna 90, as shown in phase B of FIG. 9 for long distance communicating to a control room 105. In this embodiment first high power antenna 90 can be used for distance receiving and transmitting directly to control room 105 by communicating with high power radio 106 via control room antenna 108. The control room antenna 108 can be mounted on the utility control room 105. The utility control room 105 may be located at a substantial distance from the switches 10, such as 50 miles. The three switches 10 mounted in the three phases A, B, and C communicate with each other via the three low power radios 62 using low power antennas 88; which allow the three switches 10 of the three phases A, B, and C to be actuated simultaneously. The present invention is also very beneficial for electric utilities because there is no need for a dedicated ground support structure to mount switches in a traditional manner.
(26) FIG. 10 shows schematically, in another embodiment, elevation views of three radio controlled motorized in-line double break disconnect switches 10, which like the previous embodiment shown in FIG. 9, are each operatively arranged on the phases A, B, and C of an electric utility system. Each switch 10 of the three phases A, B, and C may contain, as mentioned, a switch mounted low power radio 62, as also shown in FIG. 5, which utilizes attached low power radio antenna 88 to at least communicate with the other phases. A utility room operator at the utility control room 105 may open or close the switch 10 by transmitting a radio command from the high power antenna 108 to the ground level antenna 104 mounted on ground level enclosure 112, for example, and high power transceiver 60a which communicates from antenna 90a to the switch antenna 90, which as shown in FIG. 10, is mounted in phase B of the three phase switching arrangement which is connected to the high power transceiver/radio 60 carried by the switch in phase B. The signal is translated via the RTU, i.e., remote terminal unit, to operate the contacts, not shown, on the control board 63 which energizes the motor 32 to rotate motor shaft 38 in one direction or the opposite direction to open or close the switch 10.
(27) FIG. 10 also shows an additional embodiment, where a larger solar panel 110 can be mounted as shown to the ground level enclosure 112. The larger solar panel 110 is useful for areas with less sun to power a large ground level battery 116 which can power the high powered transceiver 60a, which can communicate open and close status information to control room 105.
(28) A current transformer 69, shown in FIG. 5, may be mounted around the bottom blade switch conductor 36b and can be used to provide additional power to charge the battery 66 as long as current flows in the conductor 36b when the switch is closed. The current transformer 69 has leads 69a, 69b which provides power to power board 68 to charge battery 66.
(29) FIG. 11 shows another embodiment whereby a utility worker can open or close the switch 10 by way of sending a radio command from the hand-held controller 94, via antenna 88a, to the three phase switching arrangement communicating via antennas 88 on each switch and the signal is translated via the RTU, i.e., remote terminal unit, to operate relay contacts, not shown, on the control board 63 which energizes the motor 32 to rotate the switch blade 34 in one direction or the other to open or close the switch 10. As shown in FIG. 5, the power board 68 takes power from the solar panel 86 and charges the battery 66 at a rate that does not over charge the battery to run the motor 12 at 125 VDC. As mentioned the power board 68 includes an inverter, not shown, that converts 12 VDC to AC. A transformer, not shown in the drawings, raises the voltage to 125 VAC which is rectified by the power board 68 to 125 VDC. The fuse 76 protects the circuit. The low power radio 62 shown in FIG. 5 in each phase receives a communication from the hand-held controller 94 to open simultaneously all three switches 10 or otherwise as desired. The hand-held controller 94 may include a momentary button 96 and a light 98 for indicating power is on, as shown in FIG. 11. The hand-held controller 94 may also include an open button 100 and a close button 102 for opening and closing the switches 10. Of course, other controls can be added to the hand-held controller 94, such as light 127 which indicates that the battery 66 is low on voltage to the point that the switch will not operate and light 128 which indicates that the radio is communicating.
(30) FIG. 12 shows one phase of a three phase installation of a 3-way switching arrangement of the present invention supported by a utility pole 118. The switching arrangement shown in FIG. 12 includes three double break motorized in-line switches, which in this embodiment are identified as switches 10a, 10b and 10c, which are each suspended in part by the utility pole 118. The transmission line cable conductors 12a, 12b result from cutting a first transmission line 120. The cable conductors 12a, 12b are attached respectively to switches 10a and 10b with a second transmission line 122 attached to switch 10c. FIG. 12 shows switches 10a and 10c in the closed position while switch 10b is in the open position. Also, three additional polymer strain insulators 124 suspend each switch 10a, 10b, 10c to the pole 118, via traditional hardware. Jumpers 126 electrically connect switches 10a, 10b and 10c together. Thus, power can be routed in three different directions. This arrangement would also work for a 2-way switching arrangement, shown in FIG. 13 which is similar to the embodiment shown in FIG. 12 except without switch 10c but with line 122 feeding switch 10a or 10b, if switch 10b were to be closed and switch 10a opened. These switching arrangements form a two way or three way switch array. For further reference regarding two-way or three-way high voltage switching see U.S. Pat. No. 9,355,797 B1, entitled Unitized Phase Over Phase Two-Way or Three-Way High Voltage Switch Assembly with One Vacuum Interrupter Per Phase, issued Mar. 29, 2015, by Charles M. Cleaveland and which is assigned to the present Assignee, Cleaveland/Price Inc. and which is herein incorporated by reference in its entirety as though fully set forth.
(31) FIG. 14 shows the present invention in a three phase A, B, and C, phase over phase array, mounted to a utility pole 118. Each of the phases A, B, and C includes a three-way switching arrangement. A two-way three phase switching arrangement is also feasible and similar to FIG. 13 but is not shown in the drawings. For further reference in this regard see the previously mentioned U.S. Pat. No. 9,355,797 B1. Each phase includes, for example, three radio controlled in-line double break switches 10a, 10b, and 10c of the present invention configured as shown in FIG. 14. Each of the switches includes the vacuum interrupter 87 as previously described. All nine (9) switches are shown in the closed position.
(32) The embodiments disclosed are merely some examples of the various ways in which the invention can be practiced and are not intended to limit the scope of the invention.
