NIetz Electric Co.,Ltd
Soft starter SSN/SSA serie User Manual
5
1.Function and feature
SSN/SSA Series digital AC motor soft starter is new type starting equipment with advanced
international level. This equipment designed and manufactured by the technique of power
electronics microprocessor and modern control theory. This equipment can limit the start current
efficiently when the asynchronous motor starts. It is widely applied in the field such as winding
machine, pump, transition and compressor etc. It is the ideal product to replace the traditional
voltage dropping start equipment such as star/triangle conversion, self-coupling voltage dropping,
magnetic control dropping voltage etc.
Function
◆ Reduce the starting current of motor; reduce capacity of power distribution; reduce the
investment cost；
◆ Reduce the start stress; prolong the operation lifetime of the motor and correspond equipments；
◆ Smooth and steady starting and soft stopping; The Water hammer and surge can be avoid；
◆ Several sorts of starting mode, wide range setting of the current and voltage. It can be used
in a lot of load conditions, so the technic can be improved；
◆ Perfect and reliable protection; The safeguard of the motor and relative equipment can be
achieved effectively；
◆ It can be used in the state in which motor should star and stop frequently。
feature
◆ Starting Mode： Based on the load characteristics, different starting mode can the related
parameters can be selected. So the best starting effect can be gained；
◆ Technical Performance： The higher performance microprocessor and software are used, so the
control circuit is simplified. The best perform speed can gained without the adjustment of the
circuit parameters；
◆ Reliability： All the electronic components of this product are selected strictly. Additionally,
the main control board is tested in high temperature environment above seventy-two hours. The
reliability of this product can be guaranteed
◆ Configuration： The modularization configuration and up-in-down-out wiring mode are adopted.
It is easy to used and integrated；
◆ Multi-Protection：The motor protection circuit is not be added if the single product is in
used. Because this product have multiple protection function such as Overload; Line fault;
Over current; the starting time and so on.So the cost can be reduced,the circuit can be
simplified。
◆ Keyboard：Operation of the keyboard is easy. User can set and modify the parameters (for
example, starting, stopping running protection) by this keyboard based on the different load
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