GTDS Notes Flashcards

GTDS Colour Codes

4 Phase 415vac

• L1: Brown
• L2: Black (Red) (Yellow)
• L3: Grey
• N: Blue (blue) (Neutral) (H1+ H2-)

1 Phase 240vac

• L1+ Ph: Brown
• N-: Blue

110vac

• E: +Brown, -

110vdc (J1+J2-)

• Frown
• Grey

50vdc (J7+ J8-)

• Blue
• Grey

Panel Wire

• 1. 5mm^2 tri-rated white
• 2. 5mm^2 tri-rated white

Earthing Panels

• 1 x 75mm^2 tri-rated

Toolbox Technical Guidance

Small wiring Identification for circuit Function

Switchgear/Control panels

• k: Paired Cable Type Cleveland.
• 10.f-ESI 09-6 Telephone Cables
• LSZH-Multipair Armoured Cable to ESI Standard - Section 4.5
• A: CT for primary protection
• B: CT for Bus Bar Protection
• C: CT for Overcurrent Protection
• D: CT for Metering & Voltage Control
• Telephone Cables - Solid tinned annealed copper, polyethylene insulated, low smoke and zero halogen (LSZH) bedding, galvanised steel wire armour, low smoke and zero halogen (LSZH) sheath. Black. Generally to ESI 09-6: Issue 6 Section 4.5

CT Colour Codes

• Ferule ID: A, B, C, D
• Red ferule /sleeving after ferrule number

VT Colour Codes

• Ferule ID. E, G, F=
• Yellow ferrule /sleeving after ferrule

EFCHUK

• G

Torque Setting

• Calibrated in Nm.
• J
• Nominal
• L
• A2: Bolt Size
• MM: Stainless Tensile steel

20 Pair Colour Code (Cleveland Cable)

VT Applications

• R: VT for ref. voltage Instruments, metering and protection
• S: VT for ref. voltage for voltage control
• T: VT for ref. voltage for synchronising

Applications

• U: AC 240v supplies
• V: DC 48v-110v supplies
• W: Closing and tripping control circuits
• X: Alarms and Indication
• Y: Auxiliary and control motor devices
• Tap changer control including AVC
• DG tripping circuits only for busbar protection
• Interlock circuits
• DC instruments and relays for exciter& field circuits for generators,
• Pilot wire protection, intertripping
• Spare cores with in a cable
• Automatic switching circuits
• Sub Station control system (control wiring)
• Remote Alarms and Indication of site
• Telephones

Multi-core Cable

• Type Cleveland, 2.d -BS6724 Mains & Control, XLPE, LSZH, SWA, LSZH, 1.5mm to 16mm including multicores Fixed Wiring and Mains Cables - Plain annealed stranded copper conductors, XLPE Insulated, low smoke, and zero halogen (LSZH) bedding, galvanised steel wire armour, low smoke and zero halogen (LSZH) outer sheath. Black. 600/100 volts grade to BS6724. Flame propagation to BS4066 PT1 and IEC 332 PT1.

Crimp Colours

• Red crimp: 1mm^2 to 1.5mm^2
• Blue crimp: 1.5mm^2 to 2.5mm^2
• Yellow crimp: 4mm^2 to 6mm^2

Tap to Drill Sizes

• 4mm tap - 3.5mm drill
• 5mm tap - 4.5mm drill
• 6mm tap - 5.5mm drill
• 8mm tap - 6.8mm drill
• 10mm tap - 8.5mm drill
• 12mm tap - 10.2mm drill

Cable Size and Gland Size

Document Information

• GTDS Ltd 2005. This document and any information or descriptive matter set out in it are confidential and copyright property and must not be disclosed, loaned, copied or used for any other purpose whatsoever without prior written permission.
• Procedure Ref: GTDS.QM.PROC.001
• Form No: GTDS.QM.F.034
• Revision