3206 Installation Rev F

8/6/2019 3206 Installation Rev F

1/11

Prepared by: Darwin Mar

Use fiber paper protection at cable break off. If using thin paper, 2 wraps

is needed.

Do not hesitate to cut tie wraps installed by Bechtel. We are responsible for

the last secured position. Use white tie wraps all the time.

CABLING


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Harness the cables so they break off like waterfalls. As much as possible, tie

them on top of ladder and not to the side. The RF jumpers are flexible, they

are easy to dress.

Avoid tying to the side.

If cables are too short to

be dressed as required

upon break, note this as

an observation in the

RBS checklist.

Tied on top. Follow for

T1, RF, power, ground


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GOOD

Default Bechtelinstallation.

BETTER

After

harnessing


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POWER

Strain relief clamp (3 screws)

Torque= 0.8 Nm

+24V DCCU Connection (8

screws)

Torque= 4.5 Nm

DCCU Cover (1 screw)

Torque= 1.5. Nm

Install fiber papers

Do not forget to test and trace the cables before terminating.

Do not trust the labels!

To do this, I suggest you measure the voltage of each pair to

verify (+)cables and then trace physically the (-) cables.


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Stripped length

= about 15 mm

No

shiners

Use the terminals as

reference for length.

Must have no shiners.

Use thin amount of

No-OX.

P or D-Tags!

Review labels to

make sure they are

installed to the

intended cable. The

print can be readfrom top to bottom.

In this example, the

tags were installed

correctly, but the

labels were not.


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Secure T1 cables at these locations using sticky backs and small

tie wraps. One of top most, one in the bottom between the 1st and

2nd screw

Tie wraps

Attached T1 labels tothe existing flags

T1 CABLES


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Do not roll the cables in loop. Run them back and

forth in the ladder rack


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Install fiber papers when T1 cables cross/touch the edge of

ladders or cross/touch other cables such as ground, DC and RF.

Missing fiberpapers

You may wrap

either the cableor the ladder

rack with fiber.


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GROUNDING

When using hand crimper, 2 crimps for standard barrel (above) and 4 crimpsfor long barrel (below). Crimps should be within the band/s.

Torque to 15 Nm

Ground lug should be #2 (Brown) 1 hole lug with inspection hole.


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Conductor must reach

and be seen at this

inspection hole. Also,

no excess conductor

should protrude.

Use a thin amount of NO-OX

(above). Below are common

mistakes.

Not OK.

No NO-OX

Not OK.

Excessive NO-

OX

OK. Must have

no shiner


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Fit the jumpers to the rubber slots directly above the FU.

Torque connections to 25 Nm

RF JUMPERS

Documents

3206 Installation Rev F