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以下是外商作的電纜規(guī)格型號(hào)的說(shuō)明：

1.  Motor cable (70 meter)for 55KW motor must be min.70mm²

2.  3 control cables to PTC sensor,space heater and Pressure switch (70 meter for each cable)

3.  RS485 cable (70 meter)

4.  Earth cable (70 meter)

5.  Suitable cable glands for all above cables

還有這兩句話不知道是什么意思，請(qǐng)幫我翻譯一下：

Suitable RS485 communication cable to be  connected from VSD  to  RTU.

All cables shall be supplied on roll drum to be cut at site with all required accessories( cable terminals ,gland sets, and  cable layout warning tape.).

麻煩大家了！