General. • 5
2.4.3
By- Pass
30A, 8310VA, 277VAC. (Maximum ratings)
The SOLSTART-1P incorporates a change-over internal by-pass. While starting, the by-pass allows current flow
through the thyristor. At the end of the starting process the by-pass closes and carries the current to the Motor.
The by-Pass is responsible for 2 functions at the end of acceleration:
1.
The NO contact closes, shortens soft starter’s thyristor and bypasses it.
2.
The NC contact opens and disconnecting the Starting booster (If exist – Consult factory for
utilizing a starter booster)
2.4.4
Starting Voltage adjustment
The SOLSTART-1P incorporates a potentiometer (P15) allows the user to adjust the starting voltage of the motor thus
controlling motor’s current and starting time.
2.4.5
Additional current limiting
In case of high starting current it is possible to add a starting buster to decrease the starting current.
Consult factory for additional information.
2.5
Signal reading with and without “SOLSTART-1P”
________________________________________________________________________________________________________
3
DOL starting without soft-
starter and current limiter
Soft-Starting with the
“SOLSTART-
1P”
soft-starter and the current limiter
Shown below are signal readings with and without the
“SOLSTART-1P”
CAUTION!
Power factor correction capacitors, if any, must not be installed on starter's Load side.
When required, Install capacitors on the Line side.
WARNING!
When Mains voltage is connected to the starter, full voltage will appear on the starter’s
load terminals. Therefore, for isolation purposes it is required to connect an isolating
device (C/B, switch, etc) upstream to the SOLSTART-1P (on the Line Side).
