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User Manual
ONE INSULATED POLE
TWO INSULATED POLES
PRIMARY
SECONDARY
SECONDARY
T
S
R
A
N
PRIMARY
T
S
R
A
B
A
N
a
n
1 SECONDARY
dn
da
A
N
n
a
1 SEC
1 SEC for RESIDUAL VOLTAGE
2 SECONDARIES
2n
2a
A
N
1n
1a
2 SECON
1 SEC for RESIDUAL VOLTAGE
2n
2a
A
1n
1a
N
dn
da
1 SECONDARY WITH TAP
n
a2
A
N
a1
RESIDUAL VOLTAJE
SECONDARY CONNECTION
da
dn
da
dn
da
dn
resistance
Phase R
Phase S
Phase T
1 SECONDARY
A
B
a
b
2 SECONDARIES
2b
2a
A
B
1b
1a
1 SECONDARY WITH TAP
b
a2
A
B
a1
In voltage transformers, never short-circuit the secondaries.
10. CONNECTION DIAGRAM VOLTAGE Transformers