Áö¶ôÁöÁ¡À» Á¤È®ÇÏ°í °£´ÜÇÏ°Ô ¾Ë ¼ö ÀÖ½À´Ï´Ù
A clear indicator of the ground fault tower
ÁöÆÄÀδõ´Â ³«·Ú·Î ÀÎÇÑ °íÀå»Ó¸¸ ¾Æ´Ï¶ó Á¶¼öÇصîÀÇ Áö¶ô°íÀåµµ °ËÃâÇÕ´Ï´Ù. ¶ÇÇÑ °íÀåÀü·ù¸¦ ÀÌ¿ëÇÏ¿© µ¿ÀÛÇϱ⠶§¹®¿¡ Àü¿øÀÌ ÇÊ¿äÇÏÁö ¾Ê°í °íÀåöž¸¸ Ç¥½ÃÇÏ¿© Áö¶ôöžÀÇ Á¶±â¹ß°ß¿¡ Àý´ëÀûÀÎ È¿°ú¸¦ ¹ßÈÖÇÕ´Ï´Ù.
The G-finder¢â detects ground faults caused not only by lightning but also by animals, etc. and then indicates the fault tower. It utilizes the fault current as a power source, therefore no battery is necessary. G-Finder¢â is highly effective in early detection of the ground fault tower.
Ư¡ Features
1. 765kVÀÌÇÏÀÇ ¼ÛÀü¼±¿¡ ¼³Ä¡ °¡´É(´ÙÁß È¸¼±µµ °¡´É)
- Available for powerline below 765kV (also for Multilinear)
2.
Áö¶ôÀü·ùÀÇ À§»óÂ÷·Î °íÀåÀ» °ËÃâ(G50, G15H)
- Detect faults by the fault current phase
3.
Àü¿øÀÌ ÇÊ¿ä¾øÀ½(°íÀå Àü·ù·Î µ¿ÀÛ)
- No power sources
4.
È°¼± »óÅ¿¡¼µµ ¼³Ä¡, ±³Ã¼ °¡´É
- Can be attached to a hot line
5.
Áö»ó¿¡¼ µ¿ÀÛ È®ÀÎ °¡´É
- Can be detected from the ground
6.
µ¿ÀÛ ÈÄ¿¡´Â Ç¥½ÃºÎ¸¸ ¸®¼ÂÇÏ¿© ´Ù½Ã »ç¿ë
- Replace indicators only after operation
7. Á¡°Ë, Á¶Á¤ ÇÊ¿ä¾øÀ½
No maintenance necessary
µ¿ÀÛ¿ø¸®(G15HÇü)
öžÀ» »çÀÌ¿¡ µÎ°í °¡°ø Áö¼±¿¡ ¼³Ä¡ÇÑ °ËÃâ ÄÚÀϺο¡¼, Áö¶ôÀü·ù¸¦ °ËÃâÇÕ´Ï´Ù. Áö¶ô°íÀåÀÌ ¹ß»ýÇßÀ» °æ¿ì, °¡°ø Áö¼±À¸·Î °íÀå Àü·ù°¡ ºÐ·ùµË´Ï´Ù.
ÀÌ Àü·ùÀÇ À§»óÂ÷¸¦ °ËÃâÇÔÀ¸·Î½á °íÀåöž¸¸À» ÁöÁ¤ÇÕ´Ï´Ù. ÀϹÝÀûÀ¸·Î À§»ó°ËÃâÀº ICȸ·Î¿Í Àü¿øÀÌ ÇÊ¿äÇÏÁö¸¸ ¹«Àü¿øÀ» ½ÇÇöÇÔÀ¸·Î½á À¯Áöº¸¼öÀÇ ÇÊ¿ä°¡ ¾ø½À´Ï´Ù. °¡°ø Áö¼±ÀÌ ¾ø´Â ¼±·Î¿¡¼´Â G3HC¡¤G3HS¡¤G0ÇüÀ¸·Î ´ëÀÀÇÒ ¼ö ÀÖ½À´Ï´Ù.
Operation principles
The ground fault current is detected by the detection coil fitted to the overhead ground wires on either side of the tower. If a ground fault occurs, the fault current branches to the overhead ground wires as well as to the ground. Additionally the fault current branches to the towers adjacent to the fault tower where the G¡¤finder¢â detects the phase difference of these currents and indicates only the fault tower. Generally, phase detection needs IC circuits and power, but Gfinder needs no battery thus no maintenance is necessary. For the towers without ground wires, G3HC, G3HS or G0 are applicable.
Çü½Ä
ºÐ±âöž¿¡´Â G15TH(3¹æÇâ)G15X(4¹æÇâ)ÀÌ ÀÖ½À´Ï´Ù.
G15TH is for three-way branch and G15X is four-way branch
Çü½Äº°»ç¾ç
Specification by type
Type
|
System
|
Number of
overhead
ground wire
|
Max ground
fault current
|
Conditions for
operation
|
G15H
|
Resistance grounded
system
|
1
|
100A or over
|
30A
or over
|
3 cycles
or over
|
2
|
200A or over
|
G15TH
|
Resistance grounded
system
|
1
|
100A or over
|
40A
or over
|
3 cycles
or over
|
2
|
200A or over
|
G15X
|
Resistance grounded
system
|
1
|
200A or over
|
85A
or over
|
3 cycles
or over
|
2
|
400A or over
|
G50
|
Direct grounded system
|
1 to 3
|
¦¡
|
1kA
or over
|
2 cycles
or over
|
G3HC
|
Resistance grounded
system
|
None
|
100A or over
|
5A
or over
|
15 cycles
or over
|
G3HS
|
Resistance grounded
system
|
None
|
100A or over
|
10A
(5A+5A) or over
|
12 cycles
or over
|
G0
|
No grounded
system
|
None
|
Line distance 4km or over
|
0.5A
|
36 cycles
or over
|
¼³Ä¡¹æ¹ý How to install
*Exampels for G50 and G15H
À¯È¿±â°£ Validity period
ÁöÆÄÀδõÀÇ À¯È¿±â°£Àº 10³âÀÔ´Ï´Ù.
GFinderTM: 10 years