Medium Voltage Application Guide

13634.A
13633.A
Current (%FLC)
Torque (%FLT)
13632.A
Current (%FLC)
Torque (%FLT)
SOFT STARTERS
Motor, load and application data
Application Data:
Motor (kW) 3200
Full speed (rpm) 1481
Total load inertia at motor shaft (kg.m2) 168
Current and torque curve data:
Motor speed
as % of
rated speed
600
350
( n % ) ( I mn
% ) ( T mn
% ) ( T In
% )
500
300
0% 550 55 17.0
10% 548 54 8.0
20% 545 53 3.0
30% 541 53 5.0
40% 537 55 8.0
50% 531 58 10.0
60% 525 61 14.0
70% 518 67 19.0
80% 500 77 23.0
90% 475 110 30.0
95% 425 160 34.0
100% 100 100 37.0
250
400
200
300
150
200
100
100
50
0
0
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 95% 100%
Motor speed (%)
( I mn % )
( T mn % )
( T In % )
Motor current & torque curves at 3.5 x FLC
Motor speed
as % of
rated speed
Load
accelerating
torque at
speed n as
% motor FLT
700
600
350
300
( n % ) ( I mn
% ) ( T mn
% ) ( T In
% ) ( T an
% )
500
250
0% 350 22 17.0 5
10% 350 22 8.0 14
20% 350 22 3.0 19
30% 350 22 5.0 17
40% 350 23 8.0 15
50% 350 25 10.0 15
60% 350 27 14.0 13
70% 350 31 19.0 12
80% 350 38 23.0 15
90% 350 60 30.0 30
95% 350 109 34.0 75
100% 100 100 37.0 0
400
300
200
100
0
0
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 95% 100%
Motor speed (%)
200
150
100
50
( I mn % )
( T mn % )
( T In % )
Acceleration time calculations
Motor Speed
as % Rated
Speed
Average Load
Accelerating
Torque Over
1.5 x FLC 2.0 x FLC 2.5 x FLC 3.0 x FLC 3.5 x FLC
Acceleration Average Load Acceleration Average Load Acceleration Average Load Acceleration Average Load
Time Over Accelerating Time Over Accelerating Time Over Accelerating Time Over Accelerating
Speed Range n Torque Over Speed Range n Torque Over Speed Range n Torque Over Speed Range n Torque Over
Acceleration
Time Over
Speed Range n
Speed Range n
Speed Range n
Speed Range n
Speed Range n
Speed Range n
( n % ) (% FLT) (secs) (% FLT) (secs) (% FLT) (secs) (% FLT) (secs) (% FLT) (secs)
0-10%-8.4 -1.50 -5.3 -2.40 -1.2 -10.53 3.8 3.35 9.7 1.31
10% - 20% -1.5 -8.59 1.7 7.58 5.7 2.22 10.6 1.19 16.4 0.77
20% - 30% 0.0 283.04 3.2 3.96 7.2 1.75 12.2 1.04 18.0 0.70
30% - 40% -2.3 -5.45 0.9 13.49 5.1 2.47 10.2 1.23 16.3 0.78
40% - 50% -4.5 -2.78 -1.1 -11.78 3.4 3.73 8.8 1.43 15.3 0.83
50% - 60% -7.2 -1.75 -3.5 -3.65 1.3 9.39 7.2 1.75 14.2 0.89
60% - 70% -11.2 -1.13 -7.1 -1.78 -1.8 -7.09 4.7 2.69 12.3 1.02
70% - 80% -14.7 -0.86 -9.8 -1.28 -3.6 -3.53 4.1 3.08 13.2 0.96
80% - 90% -17.6 -0.72 -10.6 -1.19 -1.6 -7.70 9.3 1.36 22.2 0.57
90% - 100% -11.8 -1.07 -1.9 -6.62 10.8 1.17 26.3 0.48 44.7 0.28
259 secs -4 secs -8 secs 18 secs 8 secs
4.0 x FLC 4.5 x FLC 5.0 x FLC 5.5 x FLC 6.0 X FLC
( n % ) (% FLT) (secs) (% FLT) (secs) (% FLT) (secs) (% FLT) (secs) (% FLT) (secs)
0-10%16.4 0.77 24.1 0.52 32.7 0.39 42.0 0.30 42.0 0.30
10% - 20% 23.2 0.55 30.8 0.41 39.3 0.32 48.0 0.26 48.0 0.26
20% - 30% 24.8 0.51 32.4 0.39 40.9 0.31 49.0 0.26 49.0 0.26
30% - 40% 23.2 0.54 31.1 0.41 40.0 0.32 47.5 0.27 47.5 0.27
40% - 50% 22.7 0.56 31.1 0.41 40.6 0.31 47.5 0.27 47.5 0.27
50% - 60% 22.2 0.57 31.2 0.40 41.4 0.31 47.5 0.27 47.5 0.27
60% - 70% 21.2 0.60 31.2 0.40 42.4 0.30 47.5 0.27 47.5 0.27
70% - 80% 23.6 0.53 35.5 0.36 48.7 0.26 51.0 0.25 51.0 0.25
80% - 90% 37.1 0.34 54.0 0.23 67.0 0.19 67.0 0.19 67.0 0.19
90% - 100% 65.9 0.19 80.2 0.16 83.0 0.15 83.0 0.15 83.0 0.15
5 secs 4 secs 3 secs 2 secs 2 secs
Page 56 Medium Voltage Application Guide 710-12280-00A