Siemens TIASTAR SFIM-70020, Руководство пользователя

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Starter Sizes and Ratings
Size of Starter Continuous Carrying Current, Amperes
NEMA Enclosed* Open*
Standard Size NEMA NEMA
0 18 20
1 27 30
2 45 50
3 90 100
4 135 150
5 270 300
6 540 600
* Rating for standard application. Consult factory for plugging or jogging rating.
E2 Siemens Energy & Automation, Inc. 1000 McKee Street Batavia, Illinois 60510
SFIM-7002A-0901
Section E, September, 2001
Figure 2 - Size 1 Innova/Plus Starter
Innova/Plus
The Innova/Plus is the first across-the-line magnetic starter to
offer both straight-through wiring and gravity drop-out without
bell cranks or other mechanical linkages that limit mechanical
life. The Innova/Plus achieves this combination of features
through its 45
i
angled coil, magnet, armature, and contacts.
This design provides these benefits. Innova/Plus Magnetic
Starters are available in sizes 0, 1, 2, 3, and 4.
Figure 3 - Less Contact Bounce
Contact bounce is virtually eliminated
by the combination of the 45 degree
angle and the wedge action contact
configuration.
Lower movable con-
tacts close in a vertical position and
upper movable contacts close in a hor-
izontal position, thus creating oppos-
ing forces that negate contact bounce.
Figure 4 - Faster Arc-Quenching
The direction of the arc is away from
any metal components as the con-
tacts open. The arc is confined in the
arc box chamber where it is safely dis-
sipated.
Figure 5 - Improved Contact Performance
Positive wedging action is created
when moving parts close vertically
and horizontally with stationary con-
tacts. Such action results in cleaner
contact surfaces, better electrical
continuity and longer contact life.