Outdoor Air Switches

Switch Operating Mechanisms - Electrical

Table 7 – Motor Mechanism Selection

Switch 15 - 345 kV Motor Mechanism Item

8.3 - 170 kV (except 1000 A TTR6 Vertical) 15 - 345 kV 4000 A TTR6 Vertical Break

1,4

2

2

245 - 362 kV

3

550 kV Vertical Break

362 kV TTR8

6

362-500 kV Multi Rev

7

Table 8 – Technical Data, Mechanism

Oper. Time 190° Travel Seconds Normal Service Conditions

Vertical Operating Pipe

Motor Mechanism Item

Motor

Torque In-lb

Gear Ratio

HP

RPM

SPS Min.

Feet Max.

2

30 60 30 60 30 60 30 60

3450

22,000

375:1

3.4

4

3/4

2 1/2

2

3450

30,000

594:1

5.4

5

3/4

2 1/2

2

6.8

1750

22,000

375:1

1

3/4

2 1/2

2

10.8

1750

30,000

594:1

2

3/4

2 1/2

3

34,000

13.7

3 x HVY

20

1750

760:1

3/4

2

30 60 30 60

6

30,000 3/4

1750

760:1

13.7

2 1/2

2

7

8,000

3/4

3450

48:1

14.0

2 1/2

Table 9 – Technical Data, Motor

Current, Amperes

Operating Voltage Range

1750 3450 1750 3450 1750 3450 1750 3450 Rated Speed

Fuse Size Type CC Time Delay

Rated Voltage

Rated HP

Locked Armature

Rated RPM

3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4

30 30 14 14

211 306 106 203

30 30 30 30 10 10

24

20-28

48

36-56

DC

5 6 3 3

42 61 25 35

125

90-140

6 6

250

180-280

10