Overview
150 – C25NBR is an intelligent motor soft starter belonging to the SMC-3 series. It focuses on compact and reliable three-phase motor control. It is often used for the smooth start, stop and protection of motors in industrial scenarios. It has multiple operating modes such as soft start, soft stop, and current-limited start. It can reduce the current impact when the motor starts and protect the motor and power supply lines. The built-in motor overload protection function also supports 10, 15 or 20 levels of optional overload tripping levels, as well as voltage change rate protection up to 1000V/microsecond. It is also equipped with a fault auxiliary contact, which can provide timely feedback on fault conditions such as motor overload. In addition, the internal bypass will automatically close when the motor reaches its maximum speed, reducing equipment heating.
FAQ:
1.How are the soft start and soft stop functions of 150-C25NBR implemented?
2.What is the overload protection action time of 150-C25NBR ?
The overload protection action time of 150-C25NBR is determined by the overload trip level (level 10/15/20, following the IEC 60947-4-1 standard), based on the current reaching 7.2 times the set value:
- Level 10: 4-10 seconds, suitable for light-load short-start motors;
- Level 15: 8-16 seconds (normal range in the industry), suitable for medium load fluctuation motors;
- Level 20: 6-20 seconds, suitable for long start/large inertia motors.
The setting current can be adjusted through the knob, which will indirectly affect the actual action time.
3.What is the operating noise level of the 150-C25NBR?
The SMC-3 series soft starter to which 150-C25NBR belongs has no officially disclosed specific noise value, but combined with its structural design and operating principles, the overall operating noise is at a low noise level and will basically not cause obvious noise interference to industrial sites.
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