Page 105 - Transformers Full Line

D
ONGAN
E
LECTRIC
M
ANUFACTURING
C
O
. • 2987
F
RANKLIN
TROIT
,
MI 48207
800.428.2626 • 313.567.8500 •
F
AX
313.567.8828 •
w.dongan.com
103
)
7;
.
+
,
Phase
No. of
Secondary
Wires
Primary
Current (I
p
)
Primary
Protection
(%
of Pri I
p
)
Secondary
Current (I
s
)
Secondary
Protection
(%
of Sec. I
s
)
3 (
1
2
Less than 2
2
to less than 9
9
or more
Required
300%
Max.
167%
Max.
125% *
Not
Applicable
Not
Required
3 (
3
3
(
Delta-Delta
Only)
Less than 2
2
to less than 9
9
or more
Required
300%
Max.
167%
Max.
125% *
Not
Applicable
Not
Required
3 (
1
More than 2
All Values
Required
250%
Max.
Less than 9
9
or more
Required
167%
125%*
3 (
3
More than 3
All Values
Required
250%
Max.
Less than 9
9
or more
Required
167%
125%*
! 3 (
-
7
= - ! %
)
1
2
Not
Applicable
Not
Required
Not
Applicable
Not
Required
! 3 (
-
7
= - ! %
)
3
3
(
Delta-Delta
Only)
Not
Applicable
Not
Required
Not
Applicable
Not
Required
! 3 (
-
7
= - ! %
9
1
More than 2
Not
Applicable
Not
Required
Less than 9
9
or more
Required
167%
125%*
! 3 (
-
7
= - ! %
9
3
More than 3
Not
Applicable
Not
Required
Less than 9
9
or more
Required
167%
125%*
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