Всего 1566 сообщенийСтраницы: 1 2 3 4 5 6 7 8 9 10 [10+] [20+] [30+]

 
 Harald2014-07-28 04:06:05

800 x 534, 17 кБ
A very interesting powerline is the 1.326 km long powerline from Hilpertsau to Weisenbach in Baden-Württemberg, Germany. It looks on the first view like a 20 kV-lline using triple conductors, but when you have a closer look at it, you can see that the spacers are insulators and each bundle contains a complete circuit!

Spacer of Hilpertsau-Weisenbach powerline
 
 Harald2014-07-24 02:38:20

800 x 534, 32 кБ
Powerlines entering Nagold substation
 
 Harald2014-07-24 02:35:55

800 x 534, 59 кБ
110 kV/20 kV-substation at Nagold, Germany
 
 Harald2014-07-23 02:40:12

800 x 600, 23 кБ
The mast of Thurnau transmitter with all guys. The black dots in the guys are the insulators, the red balls serve just for aircraft warning.
 
 Harald2014-07-23 02:34:17

800 x 534, 82 кБ
The guys of the first and second guy level of Thurnau transmitter are divided by insulators in conventional manner as the upmost guy screens it from high static charges during thunder storms. So close to their common anchor basement, there is no coil for grounding.
 
 Harald2014-07-23 02:28:09

800 x 534, 94 кБ
An other view of the guy anchor of the upmost guy level of Thurnau transmitter and the coil used to ground the guy
 
 Harald2014-07-23 02:22:48

800 x 1200, 153 кБ
The guy of the upmost level of Thurnau transmitter is divided by an insulator. However, there is still the possibility that the rest of the guy disturbs too much the radiation of the transmitter. In order to solve this problem, there are two ways:
1.) Dividing the guy by further insulators
2.) Grounding the guy with a coil with an inductivity chosen in a way that the disturbance by the guy is very small.

Way 1 has the disadvantage that especially at very tall masts at certain weather conditions high voltages at the guy sections may occur, requiring insulators designed for much higher voltages than that produced by the transmitter and voltage arresters bridging the insulators, which are expensive to maintain.

At Thurnau transmitter for the upmost guy level, way 2 was chosen. The coil for grounding the guy is situated close to the anchor basement.
 
 Harald2014-07-23 02:04:55

800 x 1200, 124 кБ
An other view on the base of the mast of Thurnau transmitter
 
 Harald2014-07-23 02:00:18

800 x 534, 73 кБ
Basement of the mast of Thurnau transmitter. One can see the huge insulator on which it stands and the feeder line used for feeding it with the radio power to be radiated. The coil in the line prevents too fast voltage rises, which can occur in case of a lightning strike and damage the transmitter.
 
 Harald2014-07-23 01:53:48

800 x 1200, 62 кБ
Close view up the mast of Thurnau transmitter. The guys of the first and second level are attached with insulators at the mast, while that of the upmost are not. The insulator for dividing one of the upmost guys is visible on the picture.
 
 Harald2014-07-23 01:48:02

800 x 1200, 48 кБ
Thurnau transmitter is a mediumwave transmitter working on 549 kHz with 100 kW south of Thurnau, a town in Northern Bavaria, Germany. It uses as antenna a 240 metres high guyed mast insulated against ground. The mast is electrically enlengthened as the guys of the upper level are connected directly toward the mast and divided by an intermediate insulator.
 
 Harald2014-07-18 03:06:46

800 x 1200, 73 кБ
Erection of a new powerline tower near Aldingen, Germany
 
 Harald2014-07-17 15:59:07

800 x 1200, 135 кБ
Close look at an anchor tower of the shielding wires over motorway A8 at Heusweiler
 
 Harald2014-07-17 15:55:24

800 x 534, 75 кБ
The shielding grid over motorway A8 at Heusweiler
 
 Harald2014-07-17 15:51:13

800 x 534, 60 кБ
Basement of the 50 metres mast of Heusweiler transmitter. Unfortunately the basement insulator is poorly visible through the fence.
 
 Harald2014-07-17 15:47:18

800 x 1200, 74 кБ
The 50 metres high mast of Heusweiler transmitter, used for broadcasting on 1179 kHz. It is insulated against ground.
 
 Harald2014-07-17 15:43:37

800 x 534, 39 кБ
Basement of the 120 metres mast of Heusweiler transmitter with the cage antenna
 
 Harald2014-07-17 15:40:51

800 x 1200, 83 кБ
The lower part of the 120 metres high mast of Heusweiler transmitter with the cage antenna
 
 Harald2014-07-17 15:36:46

800 x 1200, 61 кБ
A further view on the two 120 metres high masts.
 
 Harald2014-07-17 15:32:49

800 x 1200, 75 кБ
The two 120 metres of Heusweiler transmitter. The mast on the right is a mast radiator insulated against ground, the mast on the left is equipped with a cage antenna on the lower part similiar to the ARRT-antennas realized in Ukraine.
The wires of the cage antenna, which are triple conductors are fixed with insulators designed for 110 kV at the two upper rings, which are fixed at the mast. The lowest ring is the collector of the cage antenna and fixed with insulators at three steel poles.
 
 Harald2014-07-17 15:29:12

800 x 1200, 70 кБ
The two 120 metres of Heusweiler transmitter. The mast on the right is a mast radiator insulated against ground, the mast on the left is equipped with a cage antenna on the lower part similiar to the ARRT-antennas realized in Ukraine.
The wires of the cage antenna, which are triple conductors are fixed with insulators designed for 110 kV at the two upper rings, which are fixed at the mast. The lowest ring is the collector of the cage antenna and fixed with insulators at three steel poles. The wires in the foreground belong to the shielding grid of nearby motorway A8.
 
 Harald2014-07-17 15:16:23

800 x 534, 29 кБ
Heusweiler transmitter is a very powerful mediumwave broadcasting station at Heusweiler north of Saarbrücken in Germany. It actually broadcasts on 1422 kHz with 400 kW and 1179 kHz with 10 kW.
Until Mid of 1990ies the transmitter used a power of 1200 kW at daytime. The heat generated by the transmitter was used for heating a ( now closed) indoor swimming pool!
Over the nearby motorway shielding wires were spun, in order to protect vehicles from high power transmitter radiation. Interestingly a bridge over the motorway open for cars is not shielded.
Heusweiler transmitter has 3 masts: 2 with a height of 120 metres used for broadcasting on 1422 kHz and a 50 metres high mast used for broadcasting on 1179 kHz.
The 50 metres high mast and the western 120 metres high mast are insulated against ground. The eastern 120 metres high mast was also insulated, but is now grounded and equipped with a cage antenna.
 
 Harald2014-07-08 13:44:40

800 x 534, 547 кБ
Damaged pole of a 380 V - line south of Bretten, Germany
 
 Harald2014-07-07 13:03:00

800 x 600, 910 кБ
Pylon 110 of Hoheneck-Herbertingen powerline
 
 Harald2014-07-07 12:54:58

800 x 1067, 1503 кБ
Phase markings on the other site of pylon 110 of Hoheneck-Herbertingen powerline
 
 Harald2014-07-07 12:48:16

800 x 1067, 1500 кБ
Phase marking at pylon 110 of Hoheneck-Herbertingen powerline
 
 Harald2014-07-07 12:38:14

800 x 1200, 1277 кБ
Phases of Hoheneck-Herbertingen Powerline. The phases of the 220 kV circuit are marked yellow, that of the 380 kV circuit red
 
 Harald2014-06-30 12:36:35

800 x 1200, 1237 кБ
Close view at the termination tower
 
 Harald2014-06-30 12:27:06

800 x 1200, 1262 кБ
Closer view at the second tower
 
 Harald2014-06-30 11:52:19

800 x 1200, 1133 кБ
Closer look at one of the abandoned 20 kV-pylons at Böblingen



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