Hi there everyone...

Anyone have the specs/part number for the ribbon cables for Mark V panels? I assume there should be different part numbers for the different lengths of cable.

Thanks.

 

They are just ribbon cables. Order them pre-assembled from various vendors or purchase bulk material, ends, and the tools to assemble them.

CTTech

 

Actually the story goes like this... during our last outage, we replaced TCEA and TCTG cards to clear some diagnostic alarms. After replacement. the TA also recommended to replace the JL cable on the TCTG card which part number he gave was 336A3435CK G001. However at that time, we didn't have spare JL cable.

Since we will be having another outage this year, I am planning to keep spare for the rest of ribbon cable in case we might need it.

My concern is since the JL cable for the TCTG card has a specific part number, how bout the rest of the card?

Thanks.

 

Sometimes there are labels on the cables which have the part numbers on them. Often, the last three digits indicate the length, in inches, but that's not an absolute (don't you love the Mark V?).

But, usually trying to find cable part numbers is difficult, if not impossible. Every Mark V ships with a list of recommended spare parts, and quite often, there are lots of cables on the "maximum" list. I'd try that first, and then try contacting your GE packager or GE Parts Edge to see if they can help, but unless you get very lucky, you probably won't get too much help. They seem to need the exact part number (which, if you had you wouldn't be asking!) before they can order a part or find a part. (These big corporations are difficult to understand sometimes, eh?)

Anyway, you can also try Gas Turbine Controls, one of the sponsors of control.com. If you can describe it, they can usually find one, even if they don't know the exact GE part number.

 

Finally after some homework and tiring tracing of all the ribbon cables, I managed to find out all the part numbers for all the cables. Maybe other Mark V users can benefit from this as well.
Would it be a best practice to replace all the ribbon cables after it's in operation for quite some time? My machines are in operation for about 15 years. I certainly don't want a false alarm or tripping caused by a ribbon cable in the future..

Thanks.

Here is the list:

336A3435AC G01
336a3435AG G01
336A3435AH G01
336A3435AJ G01
336A3435AK G01
336A3435AL G01
336A3435AM G01
336A3435AN G01
336A3435AP G01
336A3435AQ G01
336A3435AR G01
336A3435AS G01
336A3435AT G01
336A3435AW G01
336A3435AX G01
336A3435AY G01
336A3435AZ G01
336A3435BB G01
336A3435BD G01
336A3435BM G01
336A3435BP G01
336A3435BQ G01
336A3435BR G01
336A3435BS G01
336A3435BT G01
336A3435BU G01
336A3435BV G01
336A3435BW G01
336A3435BX G01
336A3435BY G01
336A3435BZ G01
336A3435CA G01
336A3435CB G01
336A3435CC G01
336A3435CD G01
336A3435CE G01
336A3435CF G01
336A3435CG G01
336A3435CH G01
336A3435CJ G01
336A3435CK G01
336A3435CM G01
336A3435CP G01
336A3435CS G01
336A3435CU G01
336A3435CW G01
336A3435CX G01
336A3435CY G01
336A3435CZ G01
336A3435DB G01
336A3435DH G01
336A3435DK G01
336A3435DL G01
336A3435DM G01
336A3435DN G01
336A3435DT G01
336A3435DU G01
336A3435DV G01
336A3435DW G01
336A3435EF G01
336A3460BB G01
336A3460BE G01
336A3460BG G01
336A3460BH G01
336A3460BK G01
336A3460BM G01
336A3460BR G01
336A3460BS G01
336A3460BU G01
336A3460BV G01
336A3460CC G01
336A3460CE G01
336A3460CF G01
336A3460CG G01
336A3460CJ G01
336A3460CW G01
336A3460CZ G01
336A3460DH G04
336A4937AB G14
336A4937AL G01

 

Hi guys, I have some info about the Mark V Ribbon Cables:

Ribbon Cable: (For SLCC & SDCC)

3 PL
33 6A3435DZ G01 $69.48 Delivery 162 Days

6 PL
336A3435AQ G01 $33.96 Delivery 162 Days

7 PL
336A3435DH G01 $263.24 Delivery 162 Days

 

This represents a lot of work; thank you. Did you happen to write down where each cable was used (<T> TCQA to TCEA Loc. 5, for example)?

As for changing cables, it depends on many factors: environment (temperature; humidity; corrosive gas(s); etc.); frequency of flex (how many times the cable is flexed when moving card carriers, etc.); vibration; frequency of extraction/insertion (how many times a cable is unplugged and plugged back in; what kind of force is used; how it's unplugged (with the pull tab, when present) etc). All of these things will factor into how long the cables will last or when they will need to be replaced.

Many people's comfort factor will increase greatly by performing preventive maintenance like this. Others will consider it a waste of time and money ("Don't fix it until it's broken!").

In a properly maintained environment, with due caution when replacing cards/cables, these should last decades. Or at least as long as the Mark V is in service. If you frequently replace a particular card, or find it necessary to keep accessing a certain card which requires moving card carriers and flexing cables/connectors, you might want to have a spare for those cables.

But, I would suggest, if you haven't already done so, that applying conductive grease (a light film) on the connectors is better preventive maintenance that wholesale replacement of cables. (This presumes a proper environment, with due caution when handling cables/moving cards.)

There's just too many intangibles for us to say if or when you should replace those cables.

But, if you've got the money, GE will have the cables!

 

Actually, All the ribbon cables can be found in the DIY PC market. The length can be customized.
It can work as GE provided and save a lot of money.

 

Actually I did initially write down the location and the card to which it is connected but I gave up after a few cards.

Yes I agree to the fact that it is not necessary to replace the cables as long as they are not disturbed and still within 20 times of removal or insertion. But my concern is that maybe the cable could be damaged during the replacement of cards in event of card failure. That would be a real headache when it happens after unit tripping due to a card failure and my boss would be very angry as well

Yes the cables could be bought from DYI shops and would serve the same purpose but to determine the number of pins and length of cables from a running unit is really troublesome and risky. Believe me my heart was pounding very hard when I was tracing the cable part numbers previously

To be on the safe side would it be recommended to keep at least 1 unit of each cable?

BTW is the price for the cables is that expensive as offered by one of the user? That would be make the situation even harder also as I really have to work harder to convince my boss

 

Can you share any URL muggssy?

 

Thanks you for the detailed list.

Take care
G.Rajesh