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23
Appendix C
Table C3. Starter tab configuration choices
Parameter
Stop Delay Time
Unit Line Voltage
Voltage Transformer Ratio
Rated Load Amps
CT Meter Scale
Current Unbalance Trip Point
Current Unbalance Grace Period
Maximum Acceleration Setting
Acceleration Time Out Action
Overload Type
Phase Reversal Protection
Contactor Integrity Test
Phase Reversal Grace Period
Surge Protection
Momentary Power Loss
Restart Inhibit Stop to Start Time 30 seconds
Surge Sensitivity
Power Loss Reset Time
CT meter scale setting
The CT Meter Scale is an especially critical factor and must be calculated correctly.
One of two methods of calculation should be used. Typically applications of less than
600 Vac will have a single stage CT per phase connected to the starter module.
Likewise, medium voltage applications greater than 600 Vac have a two stage CT
per phase connection to the starter module. Select the correct method for this
application from the two choices that follow.
Method 1. Single stage CT calculations, less than 600 Vac only
Motor current sensing using the single stage CT per phase arrangement. In this case
only one CT is used per phase to achieve the necessary turn-down ratio of current
measurement. The CT consists of either the X13580253 or X13580269 part. This CT
reduces the 100% RLA signal input to a nominal 100 mA value for input to the
starter module.
CT Meter Scale = CT Rating / (Number of Primary Turns x 1.00)
CT Meter Scales with decimals need to be truncated as appropriate so that the
measured motor amps is less than the actual motor amps.
Recommended
value
Other options
3 seconds
1 to 30 seconds
unit voltage
180 to 6,600 volts
use one of the
0 to 700
five values
20 for <600 Vac
shown, base on
80 for 2300/2400 Vac
unit voltage
110 for 3300 Vac
140 for 4160 Vac
240 for 6600 Vac
unit design
0 to 2,500 amps
table C4 or C5
0 to 2,000 amps
30%
15 to 1,000%
90 seconds
15 to 225 seconds
choose from
6 - Across line
choices at right
11 - Primary reactor
for starter type
16 - Auto transformer
27 - Wye delta
Shutdown
Transition
Linear
Exponential
Enable
Disable
Disable
Enable
300 msec
20 to 1000 milliseconds
Enable
Disable
Disable
Enable
0 to 255 seconds
20%
0 to 100%
15 seconds
0 to 255 seconds
Entered value
PART-SVN82C-EN
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