Shrink polymer systems Cable 7.2kV to 36kV INSTALLATION INSTRUCTION

Installation Instruction

Heatshrink Termination For Single

Core Polymeric Cables 7.2kV to 36kV

* PLEASE READ INSTRUCTIONS THOROUGHLY BEFORE PROCEEDING *

INDOOR

OUTDOOR

UNITS P1-P3 GROVEMERE COURT BICTON INDUSTRIAL PARK KIMBOLTON CAMBS PE28 OEY
TEL: [phone] FAX: [phone] E-MAIL: [e-mail]

WEBSITE: www.shrinkpolymersystems.co.uk

©

General Fitting Instructions

VOLTAGE

INDOOR

L

OUTDOOR

L

X

7.2kV 150mm 200mm
12kV 190mm 270mm LENGTH OF LUG

17.5kV 250mm 300mm BARREL + 10%
24kV 310mm 360mm
36kV 510mm 600mm

! It is highly recommended that a tool suitable

for the removal of the semi-conductive screen
is used to provide a reliable discharge free
termination screen point

! Use a propane gas torch with a soft flame
! Avoid a pencil like blue flame which is caused by

unregulated supply

! Keep the flame on the move to ensure even

shrinkage of all the materials and also helps to
reduce scorching

! Ensure that all components are kept clean and

grease free during installation

! Allow to cool before applying any mechanical

strain

Remove Outer Cable Sheath:

X

L

Table 1

Single Core Armoured Cables

If the Cable is Armoured, bonding of the Armours must be
completed

using the appropriate Armour Earthing kit.
A) For Indoor T erminations (Cable End Box) - Order Bolt On

Aluminium Earth Gland Ref: SPS 560*
B) For Outdoor Terminations (Pole Top) - Please advise

Conductor and Voltage rating.

* SPS 560 size range = 50-630mm2 7.2-36kV

IMPORTANT NOTICE TO PURCHASER:- Sellers and Manufacturere’s only obligation shall be to replace such quantity of the product proved to be defective. Neither the Seller nor
Manufacturer shall be liable for any injury, loss or damage, direct or consequential, arising out of the use or inability to use the product. Before using, User shall determ ine th e
suitability of the product for his or her intended use and User assumes all risk and liability whatsoever in connection therewith.

60

mm

Fig1

30mm

Fig 2

CONSTANT

FORCE

1. Installation

Remove the Outer Cable Sheath to the
dimensions L + X given in Table 1.

Remove any fillers before cleaning and
de-greaseing the Cable Sheath below.

2. Screen Treatment

Copper Wire Screen

Apply one turn of the Red Mastic Sealant
Tape at a point 30mm below the sheath
cut (Fig 2).

Bend back the Copper Wires and press
them into the Tape. Apply one more turn
of Red Mastic Tape over this point. The
Wires should be twisted together and
Bonded to a suitable earth point.

PRIMARY

INSULATION

40mm

RED

MASTIC

40mm

30mm

Fig 3

20mm

MOISTURE

BLOCK

CONDUCTIVE

LAYER

CONSTANT

FORCE

SPRING

Copper Tape Screen

Apply one turn of the red Mastic Tape at a
point 30mm below the sheath cut (Fig 3).

Remove the Copper Tape Screens to a
point 40mm above the Cable Sheath cut
as shown opposite in Fig 3.

Position a Copper Earth Braid onto the
Copper Screen and secure with a Constant
Force Roll Spring. Ensure the Moisture
Block in the Braid is bedded into the Red
Mastic and apply one more turn of Tape
over this point. Secure the end of the
Braid to a suitable Earth point.

Note:- A full range of Solderless Earth
Bonding kits are available for all Voltages
and Conductor sizes.

3. Conductive Layer Treatment

INSULATION

10mm

10mm

PRIMARY

Fig 4

Fig 5

Extruded Conductive Layer

Remove the Conductive layer using a
suitable Tool to the dimensions shown in
Fig 3 and 4. Avoid scoring and damage to
the Primary Insulation.

Note:- The Screen should be removed
leaving a cleanly cut end. Do not roughen
the Insulation with Emery Cloth.

STRESS

RELIEF

TAPE

STRESS

RELIEF

TAPE

10mm

Soluble Conductive Layer

Cover the Conductive screen with Non
adhesive Tape for 40mm on Wire
Screened Cables and 20mm on Copper
Tape Screened Cables (see Fig 4).

10mm

Fig 6

STRESS CONTROL TUBES

Remove the layer after this point with a
suitable solvent until totally clean.
Remember to remove the Tape when
finished.

4. Apply Stress Relief Tape

Remove the release paper, stretch the
TS31785Y Yellow Stress Tape to double its
length and apply around the end of each
Core Screen to cover Copper Tape(if
present) and Insulation by 10mm
(see fig 5,6).

5. Stress Control Tubes

Position the Stress Control Tubes so that
they cover the Earth connection point and
the Conductive Screen end. However do
not extend past this point onto the Outer
Cable Sheath.

Fig 7

L + X

Fig 8

RED SEALANT TAPE

Shrink the Tubes one at a time starting
from the bottom. Ensure the tubes are
wrinkle free and have an even wall thick­ness.

6. Installing Cable Lugs

The Cable should be cut to dimension L+X
as given in Table 1. Remove the Insulation
at X and install the Lug using the appro-

X

priate method.

Preheat each Lug and wrap two layers of
Red Sealant Tape over the Lug barrel and
extend onto the Insulation by approx
10mm. Ensure the Tape is applied as
shown.

Fig 9

NUMBER OF SHEDS PER PHASE

VOLTAGE INDOOR OUTDOOR

7.2kV - 2
12kV - 2

17.5kV - 2
24kV - 3
36kV 1 4

60mm

VOLTAGE (kV) 7.2 12 17.5 24 36

DIS TANCE (mm ) 15 20 20 25 35

ANTI-TRACK TUBE

Fig 10

7. Installing Anti-Track Tube

Position the Anti-Track Tubes so that they
overlap the Earth connection point and
outer Cable Sheath by 60mm as shown in
Fig 10.

Shrink the Tubes starting from the bottom
towards the top. Keep the flame on the
move to ensure an even wall thickness.
User may trim the Tubes at the Lug end
with a sharp knife if necessary.

8. Indoor Terminations

Anti-Track Rain Sheds are not required on
Indoor Terminations rated between 7.2
and 24kV. One Shed per phase is required
on 36kV types (see Table 2).

Table 2

Clearance Dimen ions

s

Minimum clearances should be observed
for phase to phase and phase to ground
(see Table 3).

Table 3

9. Outdoor Terminations

Anti-Track Sheds should be fitted starting
from the bottom up as per the dimensions
given in Fig 12.

The number of Sheds required depends on
the system voltage (see Table 2).

Fig 11

80mm

Fig 12

200mm

Positioning of Sheds

The first Shed should be fitted at a dis­tance of 200mm from the lower edge of
the Anti-Track Tube to the edge of the
Shed. All subsequent Sheds should be
fitted at a distance of 80mm from edge to
edge.

Note:- It is advisable not to position
Sheds at the top of the Stress Control
Tubes. Re-position if necessary.

Fig 13

Min Bending Radius r=15xD

Reverse Connection

If a Termination is to be mounted for
connection above the equipment i.e in the
reverse position, Sheds should be
installed through 180º.

10. Cable Bending Radius

If required The Cable can be heated to
approximately 70ºC to enable a bend to
be introduced. See Fig 14 showing the
bending radius.

D

Fig 14

IMPORTANT NOTICE T O PURCHASER:- Sellers and Manufacturere’s only obligation shall be to replace such quantity of the product proved to be defective. Neither the Seller nor
Manufacturer shall be liable for any injury, loss or damage, direct or consequential, arising out of the use or inability to use the product. Before using, User shall determine the
suitability of the product for his or her intended use and User assumes all risk and liability whatsoever in connection therewith.

UNITS P1-P3 GROVEMERE COURT BICTON INDUSTRIAL PARK KIMBOLTON CAMBS PE28 OEY
TEL: [phone] FAX: [phone] E-MAIL: [e-mail]

WEBSITE: www.shrinkpolymersystems.co.uk

©