Tnansformer Connects

Front 1

Step 1

Back 1

Ensure the dual voltage and tap swiches are properly selected prior to hanging the transformer. Note: when offload swiches are supplied the 100% setting should be selected. When connecting to the urban 24kv system use the 97.5% initially. Further adjustments may be requierd as indicated by the voltage test, step 11

Front 2

Step 2

Back 2

Prioir to sending the dropout up the pole (a) remove dropout door (b) attach load and source side primary leads (c) roll up leads

Front 3

Step 3

Back 3

Connect dropout to the primary bushing H1

Front 4

Step 4

Back 4

Complete only one of the following depending on arrester configuration

(refer to cd 92-5 sheet 1 of 2)

(A) connect the tank mounted arrester to the primary bushing H1 lead

(B) connect the arrester to the dropout source side lead

(C) attach the primary lead to the individually tapped lightning arrester and roll it up in preperation from step 11

Front 5

Step 5

Back 5

Terminate the continuous pole ground on the primary neutral, H2. On older single bushing transformers where no H2 is identified, use either one of two case grounds as H2.

Front 6

Step 6

Back 6

Connect the lightning arrester ground lead to the pole ground wire

Front 7

Step 7

Back 7

Connect the pole ground wire to the ground rod

Front 8

Step 8

Back 8

connect the pole ground wire to the system neutral; and

Front 9

Step 9

Back 9

Run a continuous ground wire from the transformer case to the pole ground then to the system neutral

Front 10

Step 10

Back 10

Install transformer secondary risers and connect only the neutral riser to the service secondary.

Front 11

Step 11

Back 11

Connect the dropout and arrester to the primary source. Install and close the dropout door to energize the transformer. Check the voltage on the secondary risers

Front 12

Step 12

Back 12

When the transformer is paralled, phase in hot legs and connect to service secondary while transformer is energized. If not paralleled proceed to step 13.

Front 13

Step 13

Back 13

Open dropout and connect the two 120 volt risers to the service secondary then close the drop out