Dry Type Distribution Transformers

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© July 2020

226

Electrical Connections (Three Phase)

Primary

Voltage

Connect Taps

Line Leads

208

1-X1 & 2-X2 & 3-X3

X1, X2, X3

198

4-X1 & 5-X2 & 6-X3

X1, X2, X3

187

7-X1 & 8-X2 & 9-X3

X1, X2, X3

Secondary

Voltage

Line Leads

480

H1, H2, H3

277

H0, H1, H2, H3

HT84 Series

208

Δ Volt Primary

480Y/277 Volt Secondary

Taps: 2, 5% FCBN

31

Primary

Voltage

Connect Taps

Line Leads

240

1-X1 & 2-X2 & 3-X3

X1, X2, X3

228

4-X1 & 5-X2 & 6-X3

X1, X2, X3

216

7-X1 & 8-X2 & 9-X3

X1, X2, X3

Secondary

Voltage

Line Leads

480

H1, H2, H3

277

H0, H1, H2, H3

HT85 Series

32

Notes:

Connect the electrostatic shield to the equipment ground (green) or to both the equipment ground and the system ground (white). Specifications are subject

to change without notice.

240

Δ Volt Primary

480Y/277 Volt Secondary

Taps: 2, 5% FCBN

H1

H1

H2

H2

H3

H3

H0

H0

SHIELD

SHIELD

X1

X1

X3

X3

X2

X2

4

4

5

5

6

6

1

1

2

2

3

3

7

7

8

8

9

9

X1

X1

X3

X3

X2

X2

H1

H1

H2

H2

H3

H3

H0

H0

H1

H1

H2

H2

H3

H3

H0

H0

SHIELD

SHIELD

X1

X1

X3

X3

X2

X2

4

4

5

5

6

6

1

1

2

2

3

3

7

7

8

8

9

9

X1

X1

X3

X3

X2

X2

H1

H1

H2

H2

H3

H3

H0

H0

Primary

Voltage

Connect Taps

Line Leads

600

1-H1 & 2-H2 & 3-H3

H1, H2, H3

570

4-H1 & 5-H2 & 6-H3

H1, H2, H3

540

7-H1 & 8-H2 & 9-H3

H1, H2, H3

Secondary

Voltage

Line Leads

208

X1, X2, X3

120

X0, X1, X2, X3

HT7 Series

600

Δ Volt Primary

208Y/120 Volt Secondary

Taps: 2, 5% FCBN

30

X1

X1

X2

X2

X3

X3

X0

X0

SHIELD

SHIELD

H1

H1

H3

H3

H2

H2

4

4

55

6

6

1

1

2

2

3

3

7

7

8

8

9

9

H1

H1

H3

H3

H2

H2

X1

X1

X2

X2

X3

X3

X0

X0

Primary

Voltage

Interconnect

Connect

Lines to

480

1-H1 & 2-H2 & 3-H3

H1, H2 & H3

456

4-H1 & 5-H2 & 6-H3

H1, H2 & H3

432

7-H1 & 8-H2 & 9-H3

H1, H2 & H3

Secondary

Voltage

Interconnect

Connect

Lines to

480

X1, X2, X3

277

X0, X1, X2, X3

HT81 Series

480

Δ Volt Primary

480Y/277 Volt Secondary

Taps: 2, 5% FCBN

33

X1

X1

X2

X2

X3

X3

X0

X0

SHIELD

SHIELD

H1

H1

H3

H3

H2

H2

4

4

55

6

6

1

1

2

2

3

3

7

7

8

8

9

9

H1

H1

H3

H3

H2

H2

X1

X1

X2

X2

X3

X3

X0

X0