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July 2009
ENERGY AUSTRALIA 11kV Tee & Stub Tee MIRP Resin Joints Training Presentation
Introduction This joint is suitable for connecting 11kV main and branch cables of: -
3 core polymeric cables, Singl ingle e co core polymeric ric ca cable bles, 3 core PILC cables, Single co core PI PILC ca cables 35 to 400 sqmm copper or aluminium conductors. - All All joi joint nt kits kits are are sup suppl plie ied d as as 3 ph phas ase e kit. kit.
Introduction This joint is suitable for connecting 11kV main and branch cables of: -
3 core polymeric cables, Singl ingle e co core polymeric ric ca cable bles, 3 core PILC cables, Single co core PI PILC ca cables 35 to 400 sqmm copper or aluminium conductors. - All All joi joint nt kits kits are are sup suppl plie ied d as as 3 ph phas ase e kit. kit.
Introduction
This presentation provides a general guideline to perform jointing of a MIRP joint. In the event of inconsistency between this presentation and the jointing instruction, the jointing instruction shall prevail.
Kit Inspection • Re Read ad Joi Joint ntin ing g Inst Instru ruct ctio ion n CA CARE REFU FULL LLY Y befo before re car carry ry out jointing. • Ch Chec eck k all all comp compon onen ents ts ar are e avai availa labl ble e and and iden identi tifi fied ed..
Preparing Cables
Prepare cables to dimensions given on the jointing instruction
Support cables at both ends
Temporary Spacers Add temporary spacers for: - proper alignment with joint shell, and - better support when bending cables
Preparing Cables
Abrade and clean cable outer sheath
Preparing Cables Remove cable outer sheaths
Preparing Single Core Cables
2. Apply PVC tape to pack green putty around cores
1. Pack green putty to form a round and stop point at cable entry
XLPE Cable – Termination of screen wires
2
1
Fold back screen wires Build up 3 cores with spacer tape to meet the I.D. of the copper tube
3
XLPE CABLE – Earthing Kit
Tinned copper tube
XLPE Cable – Fitting Earthing Kit Slide the tube over the spacer tape making sure it is a snug fit
1
2
Trim off screen wires 3
Lay screen wires on single layer over the tube and secure by worm drive clamp
XLPE Cable – Stress Control Tapes
Stress control tape
EPR insulating tape
Black mastic tape
XLPE Cable – Applying Stress Control Tapes
Apply: 1. stress control tape, then 2. EPR insulating tape and lastly, 3. black mastic tape on core screen.
PILC Cable – Removing Lead Sheath
PILC Cable – Removing Core Screen
Tie temporary cotton binders at screen off positions and remove screens per instruction
PILC Cable – Crepe Carbon Paper Tape
Crepe Carbon Paper Stress Control Tape in ‘vacuumed’ tin foil pack
PILC Cable – Applying Crepe Carbon Stress Control
Apply crepe carbon paper stress control tape per instruction
1
2
3
PILC Cable – Applying Vanished Terylene Tape
2. Apply terylene tape on all cores, starting as near as possible to the crotch.
1. Ensure the applied terylene tape is tight and without any ceasing to eliminate voids.
PILC Cable – Earthing with Lead Sheath Clamp
1
2
Cut and bend lead sheath clamp per instruction
3
PILC Cable – Lead Sheath Clamp
Worm drive clamp
Torque limiter Grooved
Plain
PILC Cable – Lead Sheath Clamp 2. Using a plain torque limiter, tighten the worm drive clamp until the torque limiter head shears off. Discard and remove the remainder of the limiter
1
1. Apply the first worm drive clamp to the short section
2
Installing Mechanical Connectors
STOP !!! Slide the red rubber housings over the single cable cores prior to fitting the connectors
Installing Mechanical Connectors
Installing Mechanical Connectors
Applying Grey Mastic on Transition Joints
Is the exposed conductor too wide?
Centralizing the Red Rubber Housings
Applying Mastic Tapes to PILC Lead Sheath
Apply grey mastic and black mastic tapes as per instruction
Fitting Aluminium Screen Cage
Fitting Aluminium Screen Cage on Copper Tube
Tighten worm drive clamps. Ensure fingers are in ‘flat’ contact with the tube.
Fitting Aluminium Screen Cage to Lead Sheath Clamp
2. Place PLAIN torque limiter on the first worm drive clamp and re-torque.
1 1. Trim aluminium finger fingers if required and put second worm drive clamp on and tighten. Place GROOVED torque limiter, tighten and shear off.
2
Aluminium Screen Cage
Trim fingers if necessary
Tighten worm drive clamps.
Fitting Plastic Joint Shell
Cut breathing holes
Apply green putty for leak seal
Support underneath the joint shell
Mixing Compound
Read mixing instruction CAREFULLY
DO NOT contaminate mixture with water
Pouring Compound
Pour compound steadily Use alternative filling hole for the next bucket Pour the next bucket immediately after the previous one
The Joint is completed
Back Filling
WARNING !!!!! Do not disturb the joint prior to setting of the compound including: •Stepping on the cables outside the joint •Removing supports for cables and joint shell •Back filling •Rain
WT-HENLEY MECHANICAL CONNECTORS
1
3
2
1.1Connector 2. Parts 3. Gap 4
5
4 and 5. Shim sizes
Earthing of Single Core PILC cable
1
3
2
4
Earthing of Single Core PILC cable
5
6
7
ARMOURED PILC CABLE
Wipe the armour wires for not more than 40mm wide. Clean and degrease the earth wipe. 1
ARMOURED PILC CABLE
2
Install lead sheath clamp and apply black mastic tape
