LS ELECTRIC SV-iS7 Series, User Manual

Page: 473 / 491

Using a Single Phase Power Source
456
Single-Phase Current Rating (200V/60Hz)*
[kW] [HP]
Output Amp Input Amp
HD [A] ND [A] HD [A] ND [A]
5.5kW 7.5 12 16 22.1 28.6
7.5kW 10 16 23 28.6 41.2
11kW 15 24 31 44.3 54.7
15kW 20 31 38 55.9 69.7
18.5kW 25 38 45 70.8 82.9
22kW 30 45 64 85.3 116.1
30kW 40 60 75 121.0 152.0
37kW 50 75 93 154.0 190.0
45kW 60 93 114 191.0 231.0
55kW 75 114 149 233.0 302.0
75kW 100 149 178 305.0 362.0
* The drive ratings in table are valid for 60 Hz input only.
16.3 Input Frequency and Voltage Tolerance
The AC supply voltage must be within the required voltage range of 240/480 VAC +10% to – 5%
to maximize motor power production.
The standard product with three-phase voltage input has an allowable range of +10% to – 15%.
A stricter input voltage tolerance of +10 to – 5% applies when using the drive with a single-
phase supply. The average bus voltage with single-phase input is lower than the equivalent of a
three-phase input. Therefore, the maximum output voltage (motor voltage) will be lower with a
single-phase input.
The minimum input voltage must be no less than 228 VAC for 240 volt models and 456 VAC for
480 V models, to ensure motor voltage production of 207 VAC and 415 VAC, respectively.
If full motor torque must be developed near the base speed (full power) it will be necessary to
maintain a rigid incoming line voltage so that adequate motor voltage can be produced.
Operating a motor at reduced speed (reduced power), or using a motor with a base voltage
that is lower than the incoming AC supply rating (ex. 208 VAC motor with a 240 VAC supply) will
also minimize the effect of voltage deprivation ( 240 VAC Input for 208 V motor, 480 VAC Input
for 400 V motor).