ZJSHUYI The role of bypass contactor in soft start.www.shuyitop.com; #so...

The soft starter is only used for starting, continuous use is not allowed, so a bypass contactor should be used after starting. The bypass soft starter must be used together with the contactor to work normally. After the soft starter starts, the main current is switched to the bypass contactor, and the current during normal operation does not go inside the soft starter, but this does not mean that this is the case. When the soft starter is useless. There is a high-precision transformer inside the soft starter, the main current will pass through it, and the soft start detects the current and voltage during operation through the transformer. The contactor will command the coil of the bypass contactor to de-energize, and the contactor will disconnect the main current, thus playing a variety of protection functions. How to wire the control circuit between the soft starter and the external contactor? First, first understand the secondary control loop of soft start. Generally, soft start has bypass contactor output node. 2. Know the load start-up time again. The best time to cut the bypass contactor is after the start-up process is completed. 3. The main circuit of the bypass contactor should be connected in parallel with the soft starter. 4. String the output node of the bypass contactor into the control loop of the bypass contactor, preferably a self-locking loop. Among them, the external contactor is used for direct starting, which is in a parallel relationship and requires electrical interlocking. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #softstarter #motorsoftstar #softstarters #softstartechnology #threephaseforacmotor #builtinbypassseriesratedacsoftstarter #builtinbypasssoftstarter #singlephasemotorsoftstarter #contactor #ZJSHUYI #chinashuyi #shuyitop