Parkpower
Electrical
- Jan 18, 2009
- 18
Hi everyone,
Our team is asked to start a 2.5MW/6kV motor with solid state soft starter. The motor is about 300m away from the electric room. The manufacturer of soft starter, Mototronics suggests that a large reactor shall be connected in the circuit to overcome dV/dt problems. I have concerns about the minimum starting voltage and limited current because of the motor size and distance. Generally, we can start 700HP motor with 60% starting voltage and 300% full load current. However, I do not have an idea how much current needed to start this motor. If starting current exceeds 400%, soft start does not make any sense.
Is there somebody who is experienced in starting Motor of this size? Does solid state starter work or we have to use a VFD as soft starter?
Thanks,
Parkpower
Our team is asked to start a 2.5MW/6kV motor with solid state soft starter. The motor is about 300m away from the electric room. The manufacturer of soft starter, Mototronics suggests that a large reactor shall be connected in the circuit to overcome dV/dt problems. I have concerns about the minimum starting voltage and limited current because of the motor size and distance. Generally, we can start 700HP motor with 60% starting voltage and 300% full load current. However, I do not have an idea how much current needed to start this motor. If starting current exceeds 400%, soft start does not make any sense.
Is there somebody who is experienced in starting Motor of this size? Does solid state starter work or we have to use a VFD as soft starter?
Thanks,
Parkpower