SINAM 400M

This product has been discontinued. Please, see our suggested product SINAM 400.

Soft starters for three - phase motors 3 × 400 V in the power range from 1,5 to 22 kW
SINAM 400 soft starters pose an attractive solution to acceleration and deceleration regulation of squirrel cage asynchronous motors exploiting the change of amplitude of terminal voltage. With the use of phase control, the voltage applied to the motor terminals is continuously increased and thereby continuous motor acceleration is ensured. Furthermore, resulting from phase control and continuous decrease in terminal voltage at drive's switch off, smooth and controlled drive deceleration is ensured.

Soft starter operating states are indicated by five LED, which are placed on the front side of soft starter enclosure. Voltage converters SINAM 400M are equipped by the circuit indicating the termination of ramp increase. This circuit is besides optical signaling equipped by contact relay output connected in the coil circuit of motor contactor. After acceleration finishes, this circuit by - passes soft starter power elements by switching on motor contactor. It means that the motor is directly connected to the power supply and therefore abnormal warming of power elements does not occur. As a result of mentioned facts the converter can be characterized by high efficiency and small dimensions. At drive running down, firstly motor contactor switches off and the soft starter smoothly decreases motor voltage to zero values, thereby the smooth drive run down is ensured.

SINAM 400M soft starters are characterized by competitive utilization features at favourable quality to price ratio

Contents:

Examples of applications:

• acceleration control of squirrel cage asynchronous motors with power ranging up to 22 kW, e.g.:
  • acceleration control of pumps, air blowers and rables
  • acceleration control of conveyers
  • acceleration control of big masses of inertia
  • acceleration control using soft starters is useless if starting motor torque exceeds only by a small value or is less than the needed starting torque of a mechanic system (when it is not possible to start the motor with reduced voltage)

Mechanical ADVANTAGES:

• reduced starting motor torque - ensures smooth and "soft" starting of all the drives of a mechanic system, it lengthens the operating life of clutches between the motor and the gear
• it eliminates the necessity to use squirrel cage asynchronous motors, which are being started using wye - delta system

Contents:

• reduces starting current to the adequate value
• reduces the number of contactors needed for acceleration: comparing to wye - delta acceleration
• reduces starting motor current to 1,8 - 3,5 multiple value of nominal current (the starting current is 5 - 7 multiple value of nominal current at direct starting)
• ensures long operating life of contactors

Electrical ADVANTAGES:

• analogue - digital control, LED lights, four adjustable potentiometers
• aic detection of input phase dropout
• nearly linear motor acceleration (ramp-up) and deceleration (ramp-down)
• softstarter's cooler overtemperature indication
• aic control of soft starter overtemperature by monitoring the number of start ups and the value of I²t
• aic control of bypass contactor
• adjustable acceleration time (ramp-up time) and deceleration time (ramp-down time)
• adjustable starting torque at motor acceleration

Optional accessories

• higher degree of protection - up to IP66