331:
317:
25:
122:
345:
215:
193:
The system is extremely simple, efficient and reliable and is considered the most economically viable solution. Its working principle is attractive, because it uses a phenomenon usually considered as a weakness. However a large disadvantage is that it does not work when the line is switched off. It
190:, need to be visible day and night. During the day, brightly coloured balls positioned along the length of the cables are sufficient, but during the night, lighting is necessary. These beacons provide this lighting by glowing red, the standard colour used in aviation for warning beacons.
210:
The interest of the system lies in the way it obtains a power supply directly from the single cable on which it is mounted. It is difficult to obtain a very small amount of energy from a line which transports an enormous amount.
245:
a few metres long, insulated from but parallel to the high voltage cable, will have a potential different from that of the main cable. Together the conductors make a
397:
131:
89:
108:
61:
256:
Under certain conditions, the accumulated charge (and hence the potential difference) is sufficient to trigger a
68:
46:
75:
402:
57:
407:
387:
42:
35:
269:
175:
222:
Each high voltage cable creates an electric field around itself, in the same way as any live
274:
242:
231:
223:
365:
8:
336:
227:
167:
370:
82:
392:
282:, a device that gets energy from the magnetic field, instead of the electric field
350:
257:
235:
230:
of such a cable is sufficiently high, its electric field causes a significant
381:
322:
279:
199:
146:
133:
234:
between the cable and its immediate neighbour. (It is the strength of the
250:
260:. This what is used in practice, giving a reliable and robust beacon.
246:
171:
24:
330:
121:
316:
187:
125:
Photograph showing
Balisor beacons in use on high voltage cables
163:
195:
214:
359:
186:
High voltage power cables, particularly those close to
312:
198:
powerlines, but similar devices may be also used on
49:. Unsourced material may be challenged and removed.
379:
238:that makes it difficult to use low powers.)
109:Learn how and when to remove this message
213:
120:
380:
300:Jane's airport equipment fifth edition
205:
47:adding citations to reliable sources
18:
398:Electric power transmission systems
13:
170:using a cold-cathode low-pressure
14:
419:
308:
16:Type of power line warning beacon
343:
329:
315:
302:, Jane's Pub. Co., 1986 page 92
23:
34:needs additional citations for
292:
181:
1:
286:
7:
263:
249:charged across an air gap (
162:is a system of illuminated
10:
424:
168:high voltage power lines
147:46.3204523°N 4.7839506°E
194:cannot also be used on
270:Aircraft warning paint
241:As a result, a second
219:
176:aircraft warning light
126:
217:
152:46.3204523; 4.7839506
124:
275:Overhead wire marker
224:electrical conductor
43:improve this article
360:manufacturer's site
206:Operating principle
143: /
337:Electronics portal
232:voltage difference
228:electric potential
220:
127:
403:Signalling lights
119:
118:
111:
93:
415:
353:
348:
347:
346:
339:
334:
333:
325:
320:
319:
303:
296:
158:
157:
155:
154:
153:
148:
144:
141:
140:
139:
136:
114:
107:
103:
100:
94:
92:
51:
27:
19:
423:
422:
418:
417:
416:
414:
413:
412:
408:Warning systems
388:Aviation safety
378:
377:
351:Aviation portal
349:
344:
342:
335:
328:
321:
314:
311:
306:
298:David F. Rider
297:
293:
289:
266:
208:
184:
151:
149:
145:
142:
137:
134:
132:
130:
129:
115:
104:
98:
95:
52:
50:
40:
28:
17:
12:
11:
5:
421:
411:
410:
405:
400:
395:
390:
376:
375:
374:
373:
368:
362: : Obsta
355:
354:
340:
326:
310:
309:External links
307:
305:
304:
290:
288:
285:
284:
283:
277:
272:
265:
262:
258:discharge lamp
236:electric field
218:System diagram
207:
204:
200:mast radiators
183:
180:
174:, used as an
117:
116:
31:
29:
22:
15:
9:
6:
4:
3:
2:
420:
409:
406:
404:
401:
399:
396:
394:
391:
389:
386:
385:
383:
372:
371:Product Range
369:
367:
364:
363:
361:
357:
356:
352:
341:
338:
332:
327:
324:
323:Energy portal
318:
313:
301:
295:
291:
281:
280:Rogowski coil
278:
276:
273:
271:
268:
267:
261:
259:
254:
252:
248:
244:
239:
237:
233:
229:
225:
216:
212:
203:
201:
197:
191:
189:
179:
177:
173:
169:
165:
161:
156:
123:
113:
110:
102:
91:
88:
84:
81:
77:
74:
70:
67:
63:
60: –
59:
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
366:Presentation
299:
294:
255:
240:
221:
209:
192:
185:
159:
128:
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
226:. When the
182:Description
150: /
382:Categories
287:References
251:dielectric
135:46°19′14″N
69:newspapers
247:capacitor
243:conductor
172:neon lamp
138:4°47′02″E
58:"Balisor"
264:See also
188:airports
99:May 2016
393:Beacons
358:On the
164:beacons
160:Balisor
83:scholar
85:
78:
71:
64:
56:
90:JSTOR
76:books
196:HVDC
166:for
62:news
253:).
45:by
384::
202:.
178:.
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
39:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
