Control/Signal Cable Length Requirement for Gas Turbine
Control/Signal Cable Length Requirement for Gas Turbine
(OP)
Hi,
Was informed by the vendor that there is a max of 300 m cable length requirement from transmitter sensor to terminal point at rack room.
Any similar experience?
Thanks
ppm
Was informed by the vendor that there is a max of 300 m cable length requirement from transmitter sensor to terminal point at rack room.
Any similar experience?
Thanks
ppm





RE: Control/Signal Cable Length Requirement for Gas Turbine
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Sometimes I only open my mouth to swap feet...
RE: Control/Signal Cable Length Requirement for Gas Turbine
RE: Control/Signal Cable Length Requirement for Gas Turbine
rmw
RE: Control/Signal Cable Length Requirement for Gas Turbine
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Sometimes I only open my mouth to swap feet...
RE: Control/Signal Cable Length Requirement for Gas Turbine
This is a typical requirement for field instrumentation and the ONLY one that can waive that requirement is the OEM, preferably: in writing.
Can this requirement be waived?
Well... it all depends on the application, if it is a thermocouple... almost certainly not, you are dealing with millivolts.
If it is a 4-20mA signal, maybe... provided that proper shielding and segregation from other voltage levels is approved by the OEM.
If it is a digital signal, 24VDC and above, probably yes.
saludos.
a.
RE: Control/Signal Cable Length Requirement for Gas Turbine
As informed by the OEM, there's no "negotiation" for thermocouple. But for other application, they are willing to give +5% allowance i.e. 315m.
Regarding digital signal, do yu have any experience using fieldbus foundation for the GE machine?
ppm
RE: Control/Signal Cable Length Requirement for Gas Turbine
saludos.
a.