电气接线标准

WORK INSTRUCTION

DKI GENERAL WIRING PRACTICES

1.Scope

This work instruction shall be applied in the Diamond Key International Workshops

Electrical wiring on skids or associated is required.

All wiring to be performed by qualified experienced wiring personnel using appropriate tools for stripping insulation, cutting, soldering and attaching mechanical crimp type terminals with the correct dies and tools as advised by the terminal manufacturer.

Foremost electrical installations are to be performed to latest issue of wiring rules AS/NZS 3000 as well as IEC directives

2.General installation:

2.1.When removing insulation from the conductor, wire strands shall not be

nicked or damaged. Proper stripping tools shall be used to avoid such damage.

2.2.Wire and cable ties shall be snug but shall not be so tight as to

cause indentation and cold flow damage to the insulation.

2.3.Cable ties shall be tensioned and trimmed using cable tie

manufacturers tooling.

(Use of side cutters for trimming, is not permitted)

2.4.All wiring within Exe, Exi or similar enclosures to be terminated.

2.5.Where possible, adhesive installed mounting bases should not be used

for ties or cable support unless affixed with a mechanical fastener.

2.6.Wire and cable dress shall allow sufficient slack for removal and

reapplication of the wire terminations, at least twice without excess

tension.

2.7.All wire and cable, including that in ducts and conduit, shall be

handled to be free from kinks and insulation abrasions.

2.8.Wire installation shall not be subject to accumulation of water, oil

or other foreign matter.

2.9.Instrument cables are to be free of Orange drain wires.

2.10.Cable to be laid out neatly and undue crossing of cables is to be

avoided (refer Appendix 3).

2.11.All wire shall be protected against any contact with any surface other

than that designed specifically to support or protect the wire.

2.12.Protective edging, Grommets and similar materials shall be applied

wherever any possibility exists for a wire to contact a sharp edge.

2.1

3. A drip loop shall be provided in each wire or cable where water could

otherwise run along the wire or cable to the point where it enters a box or

enclosure.

2.14.Wire/cables forming part of the wiring system shall be bent in a

manner that will not cause damage or place undue stress on their sheathing or insulation.

2.14.1.1.Where manufacturer’s information on recommended bend radii is

not available, the following radii may be considered suitable

2.14.1.2.Unarmoured sheathed cables 6 times the cable diameter

2.14.1.

3.Armoured sheathed cables 12 times the cable diameter

2.14.1.4.(C

2.15.Wire jumpers on devices shall be run within the loom, so as to not be

misplaced on device replacement.

3.Cable Colors and type:

Where possible the DKI standards for cable colors are to be strictly followed

3.1.Power cables – 110v – 240v Orange

3.2.Instrument cables – 0v – 24v Black

3.3.IS cables - Blue

3.4.Flexible cables and cords shall be 1kV or 450/750V rated, heavy duty, with

multiple stranded tinned copper conductors of minimum cross section and

with a tinned copper braided screen.

3.5.Insulation materials may be either PVC, EPR or NBR

3.6.Screens shall be included in all Zone 1 cables , with the exception of

short lengths (not > 600mm) of instrument cables

3.7.Wire and cable type used shall be as stated on DKI drawings, alternatives

shall be submitted for DKI approved.

3.8.Cables used for the transmission of signals from temperature, pressure,

speed, flow, weight, level and similar signals , or any 4-20mA, 0-20mA,

24VDC or similar extra low voltage signal shall comprise twisted screened

pairs.

3.9.Wire and cable sizes to be as stated or agreed by DKI cable block diagram

and cable schedule, alternatives shall be submitted for DKI approved.

4.Wire Colors inside of Exe, Exd boxes and junction boxes shall be:

Red

White

Brown

Black

Light Blue

Yellow /

green

Yellow /

green

Grey

Brown

Orange

Blue