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怎么单线图上是VFD驱动?
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不好意思,规格书的原话忘记写上去了:(规格书说的是SCR,实际图纸是VFD,美国的单线图)
SILICON CONTROLLED RECTIFIERS
DC power for drilling shall be provided by Silicon Controlled Rectifier (SCR) panels
connected to the various drilling motors as shown on the Contract Plans, One Line
Diagram Electrical Distribution System.
There are twelve (12) DC motors to be connected to the SCR systems. Each motor will
require one set of armature cables, one set of field cables and control cables for
connection of blower motors, space heaters, and safety cut-out switches. Motors to be
connected to SCR system are as follows:
FRIEDE & GOLDMAN, LTD.
PROJECT NO. 7636-J
Friede & Goldman, Ltd. Rev. A 16-6
4 Drawworks motors, 1100 hp
6 Mud Pump motors, 1100 hp
1 Top Drive motors, 1100 hp
1 Rotary motor, 1100 hp
In addition, the Builder shall connect to the SCR the other miscellaneous devices needed
to fully complete the DC Power System (i.e., consoles, pushbuttons, drawworks brake,
etc.).
Each mud pump will also have cables run for rod and chain oilers.
All lugs on the DC system will be Builder Furnished compression type pure copper lugs.
[ 本帖最后由 DraftMan 于 2009-7-10 13:55 编辑 ] |
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