같은 상의 케이블 전류차이 발생원인

<img src="https://t1.daumcdn.net/cfile/cafe/191B0B154C8F25962D" class="tx-daum-image" style="CLEAR: none; FLOAT: none" actualwidth="640" hspace="1" width="640" vspace="1" border="0" id="A_191B0B154C8F25962D7923"/>   <img src="https://t1.daumcdn.net/cfile/cafe/201B0B154C8F25962E" class="tx-daum-image" style="CLEAR: none; FLOAT: none" actualwidth="640" hspace="1" width="640" vspace="1" border="0" id="A_201B0B154C8F25962E1CB1"/>   <img src="https://t1.daumcdn.net/cfile/cafe/111B0B154C8F25962F" class="tx-daum-image" style="CLEAR: none; FLOAT: none" actualwidth="640" hspace="1" width="640" vspace="1" border="0" id="A_111B0B154C8F25962F4437"/>   <img src="https://t1.daumcdn.net/cfile/cafe/201B0B154C8F259630" class="tx-daum-image" style="CLEAR: none; FLOAT: none" actualwidth="640" hspace="1" width="640" vspace="1" border="0" id="A_201B0B154C8F2596304F4D"/>     <TABLE cellSpacing=0 cellPadding=0 width=656 border=0> <TBODY> <TR> <TD vAlign=top bgColor=#ffffff colSpan=6 height=150>수고하십니다. 저희 공장에서 수전실  선로 보완공사를 실시하였습니다. 그런데 각 상 케이블의 전류를 측정해 보니 동일 상의 케이블간 차이가 너무 커 문의 드립니다. 원인과 해결책을 알고싶습니다. TR과 AVB간의 거리는 12m 정도이고 케이블은 300㎟입니다 아래는 측정전류값입니다.  현장사진 첨부합니다. <TABLE style="WIDTH: 636pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=834 border=0 x:str> <COLGROUP> <COL style="WIDTH: 26pt; mso-width-source: userset; mso-width-alt: 967" span=4 width=34> <COL style="WIDTH: 32pt; mso-width-source: userset; mso-width-alt: 1194" span=14 width=42> <COL style="WIDTH: 26pt; mso-width-source: userset; mso-width-alt: 967" width=34> <COL style="WIDTH: 32pt; mso-width-source: userset; mso-width-alt: 1194" width=42> <COL style="WIDTH: 26pt; mso-width-source: userset; mso-width-alt: 967" width=34> <TBODY> <TR style="HEIGHT: 22.5pt; mso-height-source: userset" height=30> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 200pt; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 22.5pt; BACKGROUND-COLOR: transparent" width=262 colSpan=7 height=30> T  상</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT: windowtext; WIDTH: 224pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=294 colSpan=7> S   상</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 0.5pt solid; BORDER-LEFT: windowtext; WIDTH: 212pt; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" width=278 colSpan=7> R   상</TD></TR> <TR style="HEIGHT: 37.5pt; mso-height-source: userset" height=50> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 37.5pt; BACKGROUND-COLOR: transparent" height=50 x:num> 1</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 2</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 3</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 4</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 5</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 6</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 7</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 8</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 9</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 10</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 11</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 12</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 13</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 15</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 14</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 16</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 17</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 18</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 19</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 20</TD> <TD class=xl24 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 21</TD></TR> <TR style="HEIGHT: 37.5pt; mso-height-source: userset" height=50> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 37.5pt; BACKGROUND-COLOR: transparent" height=50 x:num> 92</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 88</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 90</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 74</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 205</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 250</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 410</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 175</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 163</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 160</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 113</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 137</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 165</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 341</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 372</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 147</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 173</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 135</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 76</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 170</TD> <TD class=xl25 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent" x:num> 65</TD></TR></TBODY></TABLE> TEL : 0130-601-0500 ,   061-460-1872 </TD></TR> <TR> <TD bgColor=#d5e2e7 colSpan=6 height=1></TD></TR></TBODY></TABLE> <TABLE cellSpacing=0 cellPadding=0 width=656 border=0> <TBODY> <TR> <TD bgColor=#95c0e1 colSpan=6 height=2></TD></TR> <TR> <TD class=bak01_2 width=80 bgColor=#d7e1ed>답변부서</TD> <TD width=161 bgColor=#ffffff> 기술지원팀</TD> <TD class=bak01_2 width=70 bgColor=#ffffff>답변일자</TD> <TD width=152 bgColor=#ffffff> 2010.09.10</TD> <TD class=bak01_2 width=70 bgColor=#ffffff>전화번호</TD> <TD width=123 bgColor=#ffffff> 02-2182-0771~5</TD></TR> <TR> <TD bgColor=#d5e2e7 colSpan=6 height=1></TD></TR> <TR> <TD class=bak01_2 width=80 bgColor=#d7e1ed>답변내용</TD> <TD bgColor=#ffffff colSpan=5> <TABLE cellSpacing=0 cellPadding=0 width=549 border=0> <TBODY> <TR> <TD style="PADDING-LEFT: 5px" width=480 rowSpan=2>   동상인 케이블을 다조 포설할 경우에는 선로정수를 맞춰줘야지만 각 선로에 동일한 전류가 흐르게 됩니다. 동상다수조 케이블 포설방법에 대해 올려드리오니 첨부파일을 확인바랍니다. </TD> <TD align=right width=69 height=25> </TD></TR></TBODY></TABLE></TD></TR> <TR> <TD bgColor=#d5e2e7 colSpan=6 height=1></TD></TR> <TR> <TD class=bak01_2 bgColor=#d7e1ed>답변첨부</TD> <TD bgColor=#ffffff colSpan=5> <A href="xxjavascript:ansdownload('230','1')">동상_다수조_케이블의_불평형_현상과_대책.hwp (52 Kbyte)</A> </TD></TR> <TR> <TD bgColor=#d5e2e7 colSpan=6 height=1></TD></TR> <TR> <TD colSpan=6 height=20></TD></TR></TBODY></TABLE>   <a href='javascript:fileFilterViewer("http://cfile300.uf.daum.net/attach/18171C154C8F257765EF5C", "/cfile300/18/171C154C8F257765EF5C", "동상_다수조_케이블의_불평형_현상과_대책.hwp", "grpid%3D14X9q%26fldid%3DM2f9%26dataid%3D254%26fileid%3D5%26regdt%3D20100914163553&url=http%3A%2F%2Fcfile300.uf.daum.net%2Fattach%2F18171C154C8F257765EF5C")'><img src="https://t1.daumcdn.net/daumtop_deco/icon/icon.hanmail.net/editor/p_hwp_s.gif?rv=1.0.1" border="0" alt="첨부파일" class="vam"/> 동상_다수조_케이블의_불평형_현상과_대책.hwp</a>