Accessories
TERMINATIONS AND JOINTS FOR XLPE-INSULATED 12 – 36 kV MEDIUM VOLTAGE CABLES
Cable Systems, Cables and Accessories
Test values for terminations
Testing to DIN VDE 0278-629-1 (Testing methods according to EN 61442)
Voltage range test values
Test requirements
U0/U Um
6/10 12
12/20 24
18/30 36
DC withstand voltage, dry
kV
36
72
108
15 min at 6 U0, no breakdown or flashover
AC withstand voltage, dry
kV
27
54
81
5 min at 4.5 U0, no breakdown or flashover
AC withstand voltage, wet 2)
kV
24
48
72
1 min at 4 U0, no breakdown or flashover
Partial discharge at increased temperature
kV
12
24
36
max. 10 pC at 1.73 U0
Impulse at increased temperature
kV
75
125
170
10 impulses at each polarity, no breakdown or flashover
Electrical heating cycles in air
kV
15
30
45
126 cycles at 2.5 U0, no breakdown
Water bath testing
kV
12
24
36
10 cycles
kV
12
24
36
max. 10 pC at 1.73 U0
2)
Partial discharge at ambient and increased temperature Thermal short circuit (screen)
according to EN 61442 section 10
2 short circuits at Isc, no breakdown
Thermal short circuit (conductor)
according to EN 61442 section 11
2 short circuits to increase the conductor temperature to Θsc, no breakdown
Dynamic short circuit
1 short circuit at Id, no breakdown
to be agreed upon
Impulse at ambient temperature
kV
75
125
170
10 impulses at each polarity, no breakdown or flashover
AC withstand voltage, dry
kV
15
30
45
15 min at 2.5 U0, no breakdown or flashover
Salt spray 2)
kV
7.5
15
22.5
Duration: 1000 h at 1.25 U0
Relative humidity 3)
kV
7.5
15
22.5
Duration: 300 h at 1.25 U0
1) Excerpt of test values for standard voltage range 2) Only applies to outdoor terminations
2
1)
3) Only applies to indoor terminations
Content
Test values for terminations
2
Welcome to Südkabel
3
Terminations
4 - 7
Indoor terminations
4
Outdoor terminations
5
Termination for electrostatic precipitators 111 kVs
6
Accessories for indoor and outdoor terminations
7
Joints and transition joints
The systematic approach to cable accessories
8 - 10
Accessories for terminations, joints and transition joints
11
Our offer
12
Südkabel can look back on more than 40 years of experience in the field of silicone rubber cable accessories for up to 550 kV. This experience is also a decisive factor in order to be able to guarantee high-quality terminations and joints for XLPE-insulated 12 – 36 kV medium voltage cables. With the early introduction of preassembled insulating bodies, Südkabel made sure that critical assembly steps such as the manufacturing of stress control or insulation elements were taken from the building site to the manufacturing plant. The standard range of cable accessories for XLPE-insulated medium voltage cables includes plug-in terminations for metal-enclosed switchgears with inner or outer cone, joints with multi-range applications and transition joints is completed by multi-range terminations for indoor and outdoor applications as well as terminations for electrostatic precipitators. Our medium voltage accessories are also approved for networks or applications up to 42 kV under increased testing demands.
3
Indoor terminations Multi-range terminations 12 – 36 kV Indoor terminations with silicone rubber slip-on technology are set on cables with an insulation made of cross-linked polyethylene (XLPE). Various optimisations have led to today's common multi-range terminations for 12 and 24 kV. This type of termination covers up to five conductor cross sections with one insulating body and is compatible with press-fit and screw cable lugs. The applied insulating body material features relatively low shore hardness (A). This helps to achieve good adjustment to irregularities in the XLPE cable cores that potentially occur when stripping the welded exterior conductive layer. This makes post-processing of the stripped cores unnecessary. The indoor terminations significantly exceed the requirements of DIN VDE 0278-629-1. A breakout is required for application with three-core cables. For cable mounting, special cable fixings are available.
1 2
3
D
H
4 5
1
Cable lug for conductor connection
2
Insulation tube
3 Insulator 6
7
*)
4
4
Stress control element
5
Exterior conductive layer
6
Screening cable lug
7
Exterior screen
Type
Admissible core diameter mm
Measure H mm
Measure D mm
Conductor cross section *) mm²
SEHDI 10.2
13.3 – 20.8
205
46
35 – 95
SEI 12
16.8 – 24.3
205
50
70 – 150
SEI 12
21.5 – 32.6
205
54
185 – 300
SEHDI 10.2
26.5 – 40.9
205
46
300 – 630
SEI 24
16.8 – 24.3
205
50
25 – 70
SEI 24
21.5 – 32.6
205
54
95 – 240
SEHDI 20.2
30.0 – 45.0
215
69
300 – 630
SEHDI 30.1
22.9 – 27.8
270
77
35 – 50
SEHDI 30.1
25.1 – 30.5
270
77
70 – 95
SEHDI 30.1
28.3 – 34.4
270
77
120 – 150
SEHDI 30.1
31.5 – 38.3
270
83
185 – 240
SEHDI 30.1
35.6 – 43.3
270
83
300 – 400
SEHDI 30.1
42.2 – 50.1
270
88
500 – 630
for cables according to DIN VDE 0276-620
Outdoor terminations Multi-range terminations 12 – 36 kV Outdoor terminations with silicone rubber slip-on technology are set on cables with an insulation made of cross-linked polyethylene (XLPE). Various optimisations have led to today's common multi-range terminations for 12 and 24 kV. This type of termination covers up to five conductor cross sections with one insulating body and are compatible with press-fit and screw cable lugs. The applied insulating body material features relatively low shore hardness (A). This helps to achieve good adjustment to irregularities at XLPE cable cores that potentially occur when stripping the welded exterior conductive layer. This makes post-processing of the stripped cores unnecessary. The outdoor terminations significantly exceed the requirements of DIN VDE 0278-629-1. A breakout is required for application with three-core cables. For mounting at pole traverses or scaffolding, special mounting clamps are available.
1 2
3
H
4
D
6
8 9
*)
Cable lug for conductor connection
2
Insulation tube
3 Insulator
5 7
1
4
Stress control element
5
Exterior conductive layer
6
Sealing kit
7
Ribbon clamp
8
Screening cable lug
9
Exterior screen
Type
Admissible core diameter mm
Measure H mm
Measure D mm
Conductor cross section *) mm²
SEHDF 10.2
13.3 – 20.8
225
105
35 – 70
SEHDF 10.2
16.8 – 24.3
260
88
95 – 150
SEF 12
21.5 – 32.6
260
92
185 – 300
SEHDF 10.2
30.0 – 45.0
22
120
400 – 630
SEHDF 20.2
16.8 – 24.3
260
88
25 – 70
SEF 24
21.5 – 32.6
260
92
95 – 240
SEHDF 20.2
30.0 – 45.0
225
120
300 – 630
SEHDF 30.1
22.9 – 27.8
380
133
35 – 50
SEHDF 30.1
25.1 – 30.5
380
133
70 – 95
SEHDF 30.1
28.3 – 34.4
380
138
120 – 150
SEHDF 30.1
31.5 – 38.3
380
138
185 – 240
SEHDF 30.1
35.6 – 43.3
380
144
300 – 400
SEHDF 30.1
41.2 – 50.1
380
151
500 – 630
for cables according to DIN VDE 0276-620
5
Termination for electrostatic precipitators 111 kVs These terminations are especially designed for type A2XSY 1x50RM/16 111 kVs electrostatic precipitators and meet the special requirements of electrostatic filters.
1
2
D
H
1
3 4 6
Conductor contact pin
2 Insulator
5
7 8
3
Stress control element
4
Exterior conductive layer
5
Sealing kit
6
Ribbon clamp
7
Screening cable lug
8
Exterior screen
Functionality The components of electrostatic filters are subject to electrical impulseshaped stresses. The voltage increases according to the charging properties of a capacitor and abruptly drops after voltage flashover in the filter. Afterwards, the charging process is restarted.
Type
6
Bore diameter of the insulating body mm
Admissible core diameter
Measure H
Measure D
Conductor cross section
mm
mm
mm
mm²
SEHDL
23.5
25.5 – 30.0
425
170
50
SEHDL
31.3
33.5 – 38.5
425
170
50
ACCESSORIES FOR INDOOR AND OUTDOOR TERMINATIONS Preassembled cable and high flexible cable links are XLPE cables or flexible EPR-insulated trailing cables which are equipped with terminations in the factory. They are primarily used for connections between transformers and switchgear or for special applications like electrically-powered trains.
1 SEIK
D 2
SET
SEW
SEI
3
D 2
min 110
min 110
130
14
95-115 80
12
34
120 236
Preassembled cable and high flexible cable links 12 – 36 kV
Admissible current load *)
130
145
1
BSW fixing clamp
2
Reduction insert
3
BSS fixing clamp
D
30 – 50 mm
Fixing clamps for outdoor terminations
• T he minimum bending radius typical for flexible trailing cables is ideal for installation in narrow areas. • Rationalization of substation assembly thanks to no termination installation being carried out at the installation site. • The accessory equipment of the links can be chosen freely for any combination of terminations and plug-type connectors admissible for that particular type of cable or trailing cable. • Output check can be agreed upon.
Type
60
Outer diameter
A
Short circuit current 1s
mm
Minimum bending radius mm
NTMCWOEU 35 mm²
240
5
29.5
145
NTMCWOEU 50 mm²
300
7.2
31.5
155
N2XSY 35 mm²
235
5
30
450
N2XSY 50 mm²
282
7.2
34
550
Outdoor terminations can withstand transverse forces only to a limited extend. Potentially occurring mechanical loads after short-circuits and cable oscillations or due to the inherent rigidity of the cable can be controlled by means of suitable fixing clamps. BSW fixing clamps that are especially designed for SEHDF outdoor terminations (for horizontal mounting) and BSS fixing clamps (for vertical mounting) are made of glass fibre reinforced UV-resistant polyamide. They are characterised by a large clamping length of 100 mm for ideal mounting while observing the admissible surface pressure of the cable. Adjustment to individual external cable diameters is enabled by different reducers. Fixing clamps can be used for all common dimensions on panels in 5 mm increments. Various reducers enable adjustment of individual external cable diameters.
Trailing cable 24 kV
Cable 24 kV
*)
Air installation at an ambient temperature of 30 °C
7
JOINTS AND TRANSITION JOINTS JOINTS 12 – 36 kV The SEV joint with slip-on technology serves as the connection between two plastic-insulated cables with 12, 24 or 36 kV.
9
7
1
2
3
4
5
6
8
9
10
1
Insulating body
6
XLPE cable core
2
Stress controlling layer
7
Copper braided tape
3
Conductive outer coating
8
Screen wires
4
Press-fit connector
9
Sealing wrap
5
Shrinkable tube
10
XLPE cable
The multi-range capability enables use of up to five cross sections with one insulating body size. The single-part, triple-extruded insulating body is made of silicone rubber and consists of a refractive stress control element, silicone insulation and an external conductive layer. The conductor connection can either be realised with screw or press-fit connectors. Connections within one joint size can be realised without any problems. The metal screen of the joint consists of one winding of braided copper tape. The external mechanical protection is usually provided by a heat shrinkable tube. Optionally, corrosion protection tape can be used. SEV multi-range joints meet the requirements of DIN VDE 0278-629-1.
8
Type
Voltage Umax kV
Conductor cross section mm²
Admissible core diameter mm
SEV 12
12
50 – 95
15.5 – 20.8
SEV 12
12
120 – 240
18.9 – 28.4
SEV 12
12
300 – 500
27.4 – 36.4
SEV 24
24
50 – 150
18.9 – 28.0
SEV 24
24
95 – 240
22.8 – 32.6
SEV 24
24
240 – 400
29.5 – 39.6
SEV 24
24
300 – 500
30.9 – 40.9
SEV 24
24
630
39.1 – 50.1
SEV 24
24
800 – 1000
44.6 – 57.8
SEV 36
36
50 – 120
23.5 – 32.5
SEV 36
36
150 – 300
29.5 – 39.6
SEV 36
36
800 – 1000
44.6 – 57.8
JOINTS AND TRANSITION JOINTS TRANSITION JOINTS 24 kV SEVü transition joints with slip-on technology are used to connect paper-insulated cables with plastic-insulated cables.
11
1
2
3
4
5
6
7
8
9
10
1
Insulating body
2
Stress controlling layer
7
Copper braid
3
Conductive outer coating
8
Roller spring
4
Press-fit connector
9
Shrinkable tube
5
Stress control tape
10
Paper-insulated cable
6
Silicone tape
11
XLPE-cable
SEVü can be compared to SEV and offers the same features (multi-range capability, application of press-fit and screw connectors). Additional mounting steps are only required on the paper-insulated cable side. The paper-insulated cable side is prepared with tape to ensure that the impregnating compound of the paper-insulated cable cannot come into contact with the insulating body. This technology is referred to a “dry” transition joint. In connection with XLPE cables with paper-insulated single-core cables, the external mechanical protection is provided by a shrinkable tube. SEVü. When used on paper-insulated three-core cables, these cables are first of all divided up into its individual cores with a cable breakout and then treated as single-core cables. AM/SEVü. SEVü transition joints meet the requirements of DIN VDE 0278-629-2.
Type
Voltage
For connection of single-core XLPE cables and paper-insulated ...
kV
Conductor cross section Paper-insulated cable mm²
Admissible core diameter
XLPE cable mm²
mm
SEVü 24
24
... Single-core cables
35 – 150
50 – 150
18.9 – 22.0
AM/SEVü-B24
24
... SL-type cables
35 – 240
95 – 240
22.8 – 32.6
185 – 300
300
30.9 – 40.9
AM/SEVü-H24
24
... H-type cables
35 – 150
50 – 150
17.5 – 25.0
35 – 240
95 – 240
9
JOINTS AND TRANSITION JOINTS TRANSITION JOINTS 24 kV SEHDVü transition joints with slip-on technology are used to connect paper-insulated cables with plastic-insulated cables.
2
3
1
L
1
XLPE cable
2
H-type or SL-type cable
3
Shrinkable cable breakout
The single-part insulating body is made of silicone rubber and includes the stress control elements as well as an earthing reservoir for earthing the paper-insulated cable near the joint. This technology is referred to as a “wet” transition joint. Factory-equipped additional elements like insulating bodies, sealing parts and joint pipes enable easy and very quick mounting without soldering. In connection with XLPE cables with paper-insulated single-core cables, the external mechanical protection is provided by a shrinkable tube. SEHDVü. When used on paper-insulated three-core cables, these cables are first of all divided up into their individual cores with a cable breakout and then treated as single-core cables. AM/SEHDVü. SEHDVü 20 transition joints meet the requirements of DIN VDE 0278-629-2.
10
Type
Conductor cross section XLPE cable mm²
Earthing cable mm²
Length measure L approx. in mm
SEHDVü 20
95
35 – 95
1000
SEDVü 20
120
50 – 120
1000
SEHDVü 20
150
70 – 150
1000
SEHDVü 20
185
95 – 185
1000
SEHDVü 20
240
120 – 240
1000
AM/SEHDVü 20
95
35 – 95
1400
AM/SEHDVü 20
120
50 – 120
1400
AM/SEHDVü 20
150
70 – 150
1400
AM/SEHDVü 20
185
95 – 185
1400
AM/SEHDVü 20
240
120 – 240
1400
ACCESSORIES FOR TERMINATIONS, JOINTS AND TRANSITION JOINTS Polyamide fixing clamps for single and multi-core cables. Glass-fibre reinforced polyamide fixing clamps are used to fasten cables at poles, in stations and cable racks.
L2 L2
d
d
L2 B L1
B
d L1 L2
L2
d
d B L1 L2 L1
B
d B L1
Sheath cutter WM 20.1
Type K B
Sheath cutters are used to remove exterior PE insulations and XLPE insulations off medium voltage cables.
L1 N) for mounting of single (mechanical short-circuit resistance of 10,000 and multi-core cables.
Type KP
Stripping tool WL 20.1
(mechanical short-circuit resistance of 25,000 N) for mounting single and multi-core cables in trefoil formation with increased short-circuit stress.
Stripping tools are used to remove the welded exterior conductive layer of XLPE-insulated medium voltage cables.
Type KS (mechanical short-circuit resistance of 12,500 N) for mounting single and multi-core cables in trefoil formation.
Additional accessories Products for cable installation and laying: • Earthing material for cables with copper tape screens • Shrinkable cable breakout for three-core XLPE cables • RUK500 cable cleaning agent for cable sheaths and insulations • Cable bundling tape for short-circuit-proof bundling of single-core cables
Type
K26/38
K36/52
K50/75
K66/90
KP29/41
KP39/53
KS26/36
KS33/46
Suitable for the following cable diametes in mm
26 – 38
36 – 52
50 – 75
66 – 90
29 – 41
39 – 53
25 – 36
33 – 46
Measure L1
90
105
126
158
172
190
150
170
Measure L2
60
75
95
120
125
145
110
130
Measure B
60
60
60
70
80
80
80
80
Measure D
12
12
12
14
14
14
12
12
11
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OUR OFFER
Cables
Cable systems
• XLPE-insulated cables from 6 kV to 500 kV
• Turnkey XLPE-insulated cable systems up to 500 kV
Accessories for medium, high and extra-high voltage cables
Services • Consulting service on application related questions
• Outdoor terminations • Training for installation personnel onventional and plug-in terminations for • C SF6 switchgears and transformers
• Cable laying and supervision of laying
• Cable Joints
• Installation of accessories
• Plug-in terminations for outer and inner cone systems
• Commissioning
• Medium voltage cable links
• After sales services
• Accessories for electrostatic precipitator cables
Note: We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. Südkabel does not accept any responsibility whatsoever for potential errors or possible lack of information in this document. We reserve all rights in this document and in the subject matter and illustrations contained therein. Any reproduction – in whole or in part – is forbidden without Südkabel’s prior written consent. Copyright © 2014 Südkabel. All rights reserved.
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[email protected] www.suedkabel.de Südkabel 3004 E
