Cutler Hammer, Div of Eaton Corp S751 Selection Guide
Reduced Voltage Motor Starters
Solid-State Reduced Voltage Starters
Open Soft Starters — Intelligent Technologies (IT.) S751
Product Selection
IT.
S751 Soft Starter Duty Ratings
Standard Duty
Typical standard duty ratings for the IT.
S751 Soft Starter are shown in
G-40
.
Table
Standard duty ratings are defined as
those that do not exceed any of the following combinations:
25 second ramp, 2 starts per hour,
■
40°C ambient
15 second ramp, 4 starts per hour,
■
40°C ambient
10 second ramp, 6 starts per hour,
■
40°C ambient
7.5 second ramp, 8 starts per hour,
■
40°C ambient
3 second ramp, 15 starts per hour,
■
40°C ambient
Note:
For applications above 40°C, derate .5
Amps per °C.
Table G-40. Standard Duty Product Selection
Maximum
Current
1.9
4.4
9
16
27
Table G-41. Severe Duty Product Selection
Maximum
Current
1.9
4.4
9
16
27
January 2003
kW Rating (50 Hz) Horsepower Rating (60 Hz) Catalog
230V 380 – 400V 440V 200V 230V 460V 575V
.8
.8
.3
.37
.6
1.1
1.5
2.2
3
5.5
5.5
10
10
15
kW Rating (50 Hz) Horsepower Rating (60 Hz) Catalog
230V 380 – 400V 440V 200V 230V 460V 575V
.3
.37
.6
1.1
1.5
2.2
3
5.5
4
7.5
7.5
12.5
1.1
3
5.5
11
18.5
1.1
3
5.5
7.5
15
.55
.55
1/8
1/3
3/4
2
3
7-1/2
1/8
1/3
3/4
2
2
3
1/6
1/3
1
2
5
7-1/2
1/6
1/3
1
2
2
5
1/3
3/4
2
5
10
20
1/3
3/4
2
5
5
10
10
25
15
1
3
7-1/2
1
3
7-1/2
7-1/2
1/3
1/3
Number
S751L01N3S
S751L02N3S
S751L04N3S
S751L09N3S
S751L16N3S
S751L27N3S
Number
S751L01N3S
S751L02N3S
S751L04N3S
S751L09N3S
S751L16N3S
S751L27N3S
Price
Price
Severe Duty
Severe duty ratings for the IT. S751
Soft Starter are shown in
Severe duty is defined as any requirement which exceeds the length or
ramp or number of starts per hour of
the standard duty combinations noted
above.
G
Table G-41
.
Discount Symbol . . . . . . . . . . . . . . . . . . . . . . . .
MC9
Loading...