Premoulded screened separable connectors

Type SOC 400

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THORNE & DERRICK UK

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TEL 0044 117 977 4647 FAX 0044 977 5582

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Kabeldon Cable Accessories 12-24 kV

Kabeldon premoulded screened Separable Connectors, 400 A

1

6

7

2

4

5

3

8

9

10

Routine test

All connectors are routinely tested with respect to

Pd < 5 pC at 22 kV

AC

Visual inspection

45 kV for one minute

1. Insulating plug

Made of epoxy with embedded brass parts.

The outer brass plate comes into contact with the conductive layer for a fully screened connection.

Also available with insulation in between and a separate contact spring for capacitive testing.

2. Pin contact

See opposite page.

3. Bail restrain

A stainless steel frame holds the connector on the place by means of a pressure plate and a bolt.

4. Cable lug

Bolted type, tested and approved in accordance with IEC 61238-1. The cable lug is made of aluminium alloy and is tin-plated. Can be installed on aluminium as well as copper conductors, as the connection is encapsulated inside the connector and is not subjected to humid conditions.

5. Inner conductive layer

Creates a Faraday cage around the connector.

This ensures a stable electrical potential and eliminates the need for fi lling material in cavities and between the conductor and cable lug.

6. Insulating layer

High electrical strength, a thickness of min 10 mm and the elasticity of the material ensures the function with active pressure on all interfaces.

Premoulded together with the inner and outer conduictive layer. Electrical properties are ensured by routine test.

7. Outer conductive layer

UV-, ozone- and tracking-resistant. UV-resistance tested for 3000 h in a Xenon radiator. Thickness

2 mm on it’s thinnest part. When connected to the cable screen, the connector meets international requirements for a fully screened system.

8. Adapter

Made of fl exible insulating rubber with an integrated resistive stress control part.

9. Earth connection

The conductive layer is connected to the cable screen via a stainless steel band strip. The band strip can temporarily be removed from the cable screen, which makes it possible to perform cable sheath tests without disconnecting the connector from the bushing.

10. Designed for polymeric insulated cables

SOC screened connectors can be installed on XLPE as well as EPR (fl exible rubber) insulated cables.

Technical data

Lightning impulse withstand

Interface standard for bushing

Current-carrying capacity

Cable conductor size

Cable insulation diameter

125 kV

EN 50180 & EN 50181

400 A

50 - 300 mm²

15.0 - 34,9 mm

All dimensions in mm

Type test according to CENELEC HD 628.1 and 629.1 test sequence D1 and D2

The screened separable connectors have been tested and approved in accordance with this international standard.

Pin contact SOC 400

The pin contact is made of copper and is silver-plated. An expansion ring installed with a torque wrench keeps the pin in contact with the cable lug. The whole connector is secured to the bushing by means of a bail restrain.

Test sequence D1

1. DC voltage withstand test at 76 kV negative polarity for 15 min

2. AC voltage withstand test at 57 kV for 5 minutes

3. Pd measurement at ambient temperature at 24 kV

4. Lightning impulse voltage test at 95°C with peak values 125 kV, 10 positive and 10 negative impulses

5. Load cycling in air 3 x 8 h at 32 kV

6. Pd measurement at elevated and ambient temperature at 24 kV

7. Load cycling in air 60 x 8 h at 32 kV

8. Load cycling under 1 m water 63 x 8 h at 32 kV

9. Disconnection / connection 5 complete operations

10. Pd measurement at elevated and ambient temperature at 24 kV

11. Lightning impulse voltage test at ambient temperature with peak values 125 kV, 10 positive and 10 negative impulses

12. AC voltage withstand test at 32 kV for 15 minutes

Bushings as per

EN 50181 & EN 50181

R3

R3

40

R3

11

5, 5

90

Bail holde r

400 series, 400 A

Contact type: sliding Ø14

Interface type: B

Requirements

No breakdown or fl ashover

No breakdown or fl ashover

Discharge level <10 pC

No breakdown or fl ashover

No breakdown or fl ashover

Discharge level <10 pC

No breakdown or fl ashover

No breakdown or fl ashover

No visible damage to contacts

Discharge level <10 pC

No breakdown or fl ashover

No breakdown or fl ashover

Test sequence D2 Requirements

13. Thermal short circuit test for 1 sec to reach a conductor temperature of 250°C No visible signs of damage

14. Lightning impulse voltage test at ambient temperature with peak values 125 kV, 10 positive and 10 negative impulses

15. AC voltage withstand test at 32 kV for 15 minutes

No breakdown or fl ashover

No breakdown or fl ashover

For information only 16. Examination

Tests Nos. 17 - 19 are carried out on separate test objects

17. Screen resistance measurement before and after ageing

18. Leakage current measurement

19. Screen fault current initiation

Resistance <5000

Leakage current <0.5 mA at 24 kV

Fault current should fl ow continuously

210

SOC 400

Type test according to Class A in IEC 61238-1: Compression and mechanical connectors for power cables with copper or aluminium conductors

Screw cable lugs included in SOC 400 have been tested and approved according to this international standard.

Electrical test. The current cycling test was performed with a 300 mm² aluminium conductor.

Test sequence Requirements

1. The fi rst and second cycle are used to determine the reference conductor temperature and the heat cycle duration used on the test loop for all subsequent heat cycles.

Reference conductor 122.1°C, total cycle time 1 h 30 min.

2. 200 heat cycles performed

3. Six short-circuits to reach a conductor temperature of 250 - 270°C with cooling to a temperature 35°C after each short circuit.

Short circuit current 25 kA for 2.4 seconds.

4. Another 800 heat cycles are performed, 1000 cycles in total

Test result for the electrical test with resistance measurement

A Initial scatter, prior to heat cycling

B Mean scatter, over the last 11 resistance measurement intervals

C Change in resistance factor D, for each of the six connectors

D Resistance factor ratio, for each of the six connectors

0.3

0.3

0.15

1.5

Reference conductor (122.1°C)

Mechanical test

Tensile force during 1 min. Requirement aluminium 40 N x A and copper 60 N x A. Maximum force 20 kN.

A = Nominal conductor cross-section in mm². Test performed with the following conductor sizes:

Aluminium 150 mm²

Aluminium 185 mm²

Aluminium 300 mm²

Copper 150 mm²

6 kN

7.4 kN

12 kN

9 kN

ABB Kabeldon

ABB Automation Technologies AB

Box 531

SE-441 15 Alingsås, Sweden

Tel: +46 322 770 00

Fax: +46 322 770 01 www.abb.se/kabeldon

WWW.CABLEJOINTS.CO.UK

THORNE & DERRICK UK

TEL 0044 191 490 1547 FAX 0044 477 5371

TEL 0044 117 977 4647 FAX 0044 977 5582

WWW.THORNEANDDERRICK.CO.UK