One motor, two 185 power sources – how to connect them?
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There is a 350kw motor on site, along with a control cabinet. Two 185 cables run from the control cabinet to the motor – how should they be connected? , what principle.
The rated current of a 350kW motor should be around 700A; the 185 you mentioned is probably the wire diameter! The current-carrying capacity is around 370. I think the two cables should be used in parallel; I’m not sure if that’s correct.
What’s the correct answer anyway! Looking at them, they are all high-voltage motors! I thought the voltage was just 380V
The original poster really didn’t clarify their question. The motor has a power of 350kW, and the voltage level is not specified. Generally, motors with a power of over 160 kW use 6kV/10kV power supply, so it is certainly a high-voltage motor. But in fact, if variable frequency control is used (the poster mentioned a control cabinet, which is likely a variable frequency control cabinet), 350kW motors generally use low-voltage power supply (380V or 690V). At this time, it is reasonable to use two cables with an 185 cross-section connected together.
There can be an inverter or star-delta starting, right?
I once encountered a 350KW motor from Germany that was also controlled via frequency conversion; at that time, two 185 cables were connected in parallel for use.
The two cables need to be connected in parallel to the motor terminals.
The maximum power of 400V low-voltage motors can reach 630KW. If your 350KW system operates at 400V, a 185 duplex connection is a reliable way to connect the motor.