' $ ! $!& #$"&&"! : (%& !' $$ !"
($+$,1 ⋅ ,3 07
*3&& !*$ *(,)1
to 7SD600
Figure 5.3 Standard connection L1ā-āL3ā-āE
5.2.4.2 Connection for reduced
earth-fault sensitivity L1ā-āL2ā-āL3
, $ 02'$# 1712$+1 5(2' . 02("3* 0*7 *-5 8$0- 1$9
/3$,"$ (+.$# ,"$ 2'$ % 3*2 "300$,2 %-0 1(,&*$
.' 1$ $ 02' % 3*2 + 7 !$ &0$ 2$0 2' , 2'$ % 3*2 "309
0$,2 %-0 25-.' 1$ 1'-02"(0"3(2 , 13"' " 1$1
2 )(,& (,2- ""-3,2 2'$ 2'$0+ * 120$11 -% 2'$ +$ 139
0(,& "(0"3(2 2'$ "300$,2 20 ,1%-0+$0 (1 "-,,$"2$# 1
1'-5, (, (&30$ '$ 1$,1(2(4(27 "-+. 0$# 2- 2'$
17++$20(" 2'0$$.' 1$ "300$,2 (1 !$25$$, ,#
%-0 ** 27.$1 -% 1'-02"(0"3(21
*3&& !*$ *(,)1
to 7SD600
Figure 5.4 Connection L1ā-āL2ā-āL3 with
reduced earth-fault sensitivity
5.2.4.3 Connection for increased
earth-fault sensitivity L1ā-āL3ā-āE
% 2'$ 1$,1(2(4(27 2- 1(,&*$.' 1$ $ 02' % 3*21 +312 !$
'(&'$0 2' , 2' 2 "'($4$# 5(2' 2'$ 12 ,# 0# "-,,$"9
2(-, %-0 (,12 ,"$ (, 1712$+1 5(2' *-5 0$1(12 ,"$ $ 029
'$# 12 0 .-(,21 2'(1 + 7 !$ . 02( **7 "'($4$# !7 "-,9
,$"2(-, -% + 2"'(,& 20 ,1%-0+$0 1 1'-5, (,
(&30$ -,1(#$0(,& 2'$ *- #(,& -% 2'$ "300$,2
20 ,1%-0+$0 2'(1 "(0"3(2 " , !$ 31$# 2- ..0-6(+ 2$*7
#-3!*$ 2'$ "300$,2 (, 2'$ ,$320 * "-,#3"2-0 '$ $ 02'
% 3*2 1$,1(2(4(27 (1 (,"0$ 1$# 2- % "2-0 (, 2'$ 0 ,&$ -%
2- (, 0$* 2(-, 2- 2'$ 17++$20(" * 2'0$$
.' 1$ "300$,2 , 2'$ " 1$ -% '' 1'-02"(0"3(21
2'$ 1 +$ 1$,1(2(4(27 ..*($1 1 %-0 12 ,# 0# "-,,$"9
2(-,
*3&& !*$ *(,)1
to 7SD600
Figure 5.5 Connection L1ā-āL3ā-āE with
increased earth-fault sensitivity
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