Cable
accessories
HEAT-SHRINKABLE JOINTS FOR
PLASTIC OR PAPER INSULATED
"NON-DRAINING" POWER CABLES UP TO 36 kV
APPLICATION
Heat-shrinkable joints KSTS are used for fast and reliable jointing of XLPE, PVC or EPR
rubber single core or three core armoured or unarmoured cables for voltages up to 36 kV.
Application of oil resistant separator (silicone tape) enables use of this joint for paper
insulated "NON-DRAINING" cables (joint type KSTS-PI and transition joint type
KSTS-XPI).
These joints are used in wide range of cross-sections, without making the cones on the
insulation and after installation cable with joints may be put into the service
immediately.
Using heat-shrinkable tube with inner adhesive layer, the complete sealing is ensured, so
the joints may be laid into the ground. Quality of the joints is tested in H.V. laboratory
according to IEC and VDE 0278 standard.
ELECTRICAL FIELD CONTROL
In order to decrease electrical field to the permissible value in the region of interrupts
of semi-conducting layers, as well as conductor ferrule, the stress-grading pad, made of
material with high permittivity is used. Applying dual-wall tube TSCEPSCX, electrical
field control is improved by continuous pressure of inner EPR rubber to the grading pad
and insulation surface, so that decreases possibility of appearance of the partial
discharge strongly.
ADVANTAGES
- Fast, reliable and cheap installation
- Decreasing the time necessary for installation
- No requirements for specially skilled jointers and special tools
- Using only one oil resistance separation layer, joints can be also applicable to
paper insulated ("NON-DRAINING") cables
- Possibility of jointing the cables, made of various types of insulation, shape,
and metal and conductor cross-sections
- Small number of different heat-shrinkable tubes covers wide range of cable
cross-sections
- Quality and reliability are proved in the factory
Technical data for choice of joints, according to cable construction, are shown
in the following table.
| |
Single
core cables |
Three
core cables |
Four
cores cables |
| Voltage (kV) |
Mark |
Cross
section mm2 |
Length
mm |
Mark |
Cross
section mm2 |
Length
mm |
Mark |
Cross
section mm2 |
A mm |
B mm |
C
mm |
| 1 |
|
|
|
|
|
|
KSTS 6
KSTS 25
KSTS 50
KSTS 95
KSTS 150
KSTS 240
KSTS 400 |
4-6
10-25
35-50
70-95
120-150
185-240
300-400 |
150 200 250 300 350 350 450 |
50 100 150 150 200 200 250 |
200 300 400 450 550 550 700 |
| 10 |
KSTS 10/1-70
KSTS 10/1-150
KSTS 10/1-300 |
25 - 70
95 - 150
185-300 |
700 |
KSTS 10/3-70
KSTS 10/3-150
KSTS 10/3-300 |
25 - 70
95 - 150
185-300 |
1200 |
|
|
|
|
|
| 20 |
KSTS 20/1-70
KSTS 20/1-150
KSTS 20/1-300 |
25 - 70
95 - 150
185-300 |
750 |
KSTS 20/3-70
KSTS 20/3-150
KSTS 20/3-300 |
25 - 70
95 - 150
185-300 |
1300 |
|
|
|
|
|
| 35 |
KSTS 35/1-70
KSTS 35/1-150
KSTS 35/1-300 |
25 - 70
95 - 150
185-300 |
800 |
KSTS 35/3-70
KSTS 35/3-150
KSTS 35/3-300 |
25 - 70
95 - 150
185-300 |
1500 |
|
|
|
|
|
HEAT-SHRINKABLE TERMINATIONS FOR PLASTIC OR PAPER
INSULATED
"NON-DRAINING" POWER CABLES UP TO 36 kV
APPLICATION
Heat-shrinkable terminations KZTU for indoor mounting and KZTS for outdoor mounting are
used for fast and reliable terminating of XLPE, PVC or EPR rubber single core or three
core, armoured or unarmoured cables for voltage up to 36 kV. Application of oil resistant
separator (silicone tape) enables use of these terminations for paper insulated
"NON-DRAINING" cables (indoor termination type KZTU-PI and outdoor termination
type KZTS-PI). Indoor termination type KZTU is suitable for small "rooms".
Outdoor terminations type KZTS require a proper number of insulating sheds, depending on
the voltage level for longer creepage distance.
ELECTRICAL FIELD CONTROL
In order to decrease electrical field to the permissible value in the region of interrupts
of semi-conducting layers, the stress-grading pad, made of material with high permittivity
is used. Application dual-wall tube TSCEPSCX, electrical field control is improved by
continuous pressure of inner EPR rubber to the grading pad and insulation surface, so that
decreases strongly possibility of appearance of the partial discharge.
ADVANTAGES
- Fast, reliable and cheap installation
- Decreasing the time necessary for installation
- No requirements for specially skilled jointers and special tools
- Using only one oil resistance separation layer, terminations can be also
applicable to paper insulated ("NON-DRAINING") cables
- Small number of different heat-shrinkable tubes covers wide range of cable
cross-sections
- Quality and reliability are proved in the factory
Technical data for choice of terminations are done in the
following table. Linear measures of terminations in the bracket refer to unarmoured
cables. Number of insulating sheds for outdoor mounting for one core: 4 for 10 kV, 8 for
20 kV and 10 for 35 kV. Insulating sheds are not applied for voltage 1 kV.
| |
Single
core cables |
Three
core cables |
Four
cores cables |
| Voltage (kV) |
Mark |
Cross section (mm2) |
Lenght (mm) |
Mark |
Cross section (mm2) |
Lenght (mm) |
Mark |
Cross section
(mm2) |
| 1 |
|
|
|
|
|
|
KZTS/KZTU 6
KZTS/KZTU 25
KZTS/KZTU 50
KZTS/KZTU 95
KZTS/KZTU 150
KZTS/KZTU 240
KZTS/KZTU 400 |
4-6
10-25
35-50
70-95
120-150
185-240
300-400 |
| 10 |
KZTS 10/1-70
KZTS 10/1-185
KZTS 10/1-400 |
25 - 70
95 - 185
240-400 |
420
(350) |
KZTS 10/1-70
KZTS 10/1-185
KZTS 10/1-400 |
25 - 70
95 - 185
240-400 |
550
(550) |
|
|
| 20 |
KZTS 20/1-95
KZTS 20/1-300 |
50 - 95
120-300 |
500
(430) |
KZTS 20/1-95
KZTS 20/1-300 |
50 - 95
120-300 |
630
(580) |
|
|
| 35 |
KZTS 35/1-95
KZTS 35/1-240 |
50 - 95
120-240 |
600
(530) |
KZTS 35/1-95
KZTS 35/1-240 |
50 - 95
120-240 |
730
680 |
|
|
    
|