Starting Systems - Saci 6 Manual De Instrucciones De Montaje Y Servicio

7-1 Protection
- Install a switch to disconnect the installation voltage
- Install a control panel and adequate protection and sized to engine power, with a overload relay
(thermal relay) Class 10A or 10 with downtime of less than 10 sec at 500% nominal temperature
compensated
- Connect the motor to ground as shown in Figure 3 - 4 (external grounding all engines)
- Install a protection against over voltage Figure 5
7-2 Starting system
- The motors can be pulled in direct start (motor with a single cable) and start star triangle (motor
with two wires). In this type of starting star-delta connection must be established in a maximum
of 3 s in Figures 3 and 4 illustrate the connection diagrams.
Figure- 3 Direct start Figure-4 Star-Delta Start Figure-5 Over voltage protection
7-3 Start with soft starter
- Follow the manufacturer's instructions soft starter
- Adjust the tension so soft starter to start the boot to 55% of the nominal motor and ramp time
of acceleration and stop is set at a maximum of three seconds
- Bridging the soft starter after the acceleration ramp by a contactor
7-4 Start with frequency inverter
- Follow the manufacturer's instructions inverter
- Check that the intensity at all points of regulation does not exceed the rating marked on the
plate engine features
- Set the drive for not exceeding the nominal frequency values of 50 Hz or 60 Hz. The lowest
operating frequency for the motor is 35 Hz will focus on setting this parameter so that the motor
can't operate below this frequency
- Ensure that the ramp time starting from 0 to 35 Hz is set up in 2 seconds. Also the time of the
stop ramp from 35 to 0 Hz has to be a maximum of 2 seconds
- Ensure that also during motor operation with frequency flow cooling is adequate
- Limit the peaks in the motor during operation with a frequency converter to the following values:
Maximum voltage ramp 500 V/us Peak voltage up to 1000 V.