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SAUDI CONSOLIDATED ELECTRIC COMPANY

CENTRAL REGION

SPECIFICATION NO: 5/24

HV CABLE GLANDS FOR 13. 8kV & 33 kV SWITCHGEAR

AND TRANSFORMER

APPROVEDDIVISION

MANAGER

REVISION C

DATE 15/10/1407H

ENDORSED -----------------------------------------

Director Tech. Studies Date24/10/1407H

APPROVED --------------------------------

Vice President for Engineering Date27/11/1407H

012/74320/AB-mza.

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Specification No: 5/24 Rev. No: C

Page 2 of 12

Revisions

Original

Rev. A

Rev.B February-1981.

Rev.C Shawwal-1407 Revisions sheet and Contents sheet added

(June-1987) Addition of 33kV glands.

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Page 3 of 12

CONTENTS

1. Scope2. Design 3. Insulated Cable Glands4. Covering Sleeve5. Form of Supply6. Detailed Instruction7. Packing8. Schedule of Particulars9. Drawings: SC/P/665/48

SC/P/665/50

SC/P/665/51
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Page 4 of 12

H.V. CABLE GLANDS FOR 13.8kV & 33kV SWITCH GEAR:

1. SCOPE:This specification covers the requirements of SCECO, Central Region, of the manufacture and

supply of H.V. cable Glands for 13.8kV & 33kV switchgear and transformers.

These cable glands can he insulated or uninsulated.

2. DESIGN:

2..1 The purpose of the cable gland is to provide an adequate, corrosion resistant earth bond for the

metallic cable armours together with means of sealing the cable sheath terminations.

2.2 These cable glands are designed to accommodate 3-phase HV XLPE cables specified in SCECO,Central Region, specifications Nos. 5/2 and 5/3 (Latest Editions)

2.3 The particular options regarding cable dimensions are summarized in the table below:Tension Cable Size

(sq.mm)

Approximate

Diameter Underneath

The Armour (mm)

Diameter of

Armour Wires

(mm)

33Kv 3 x 240 91 3.15

13.8kV

3 x 300

3 x 185

3 x 50

81

69

49

3.15

2.5

2.5

2.4 The cable glands are designed to allow enough space inside the switchgear cable box to allow

cross core connection and ease interchange of phase. Details are shown in drawing No.

SC/P/665/48.

2.5 Contact between armour and gland is ensured by two worm drive clips. This contact should be

designed to withstand 21kA for 1 second for 13.8kV network and 25kA for 1 second for 33kV

network.

2.6 A stud (M10) is welded on the cable gland to connect an earthing cable. Adequate nut and

washer are provided.

2.7 The cable glands should be made of galvanised steel to prevent corrosion.
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3. INSULATED CABLE GLANDS:

3.1 Where insulated cable glands are used; the glands are insulated from the metalwork of the

switchgear by a square insulating insert.

The fitting must be secured by 4 insulated nuts, bolts and washers or by ordinary nuts, bolts and

washers in conjunction with insulating devices. Details are shown in drawing No.

SC/P/665/51.

3.2 In this case all insulated accessories (insert, nuts and bolts) must be designed to withstand a

power frequency test voltage of 10kV for 3 sec.

3.3 The thickness of the insulating insert must be not less than 9 mm.4. COVERING SLEEVE

Connection between armour, gland and conductor will be covered with a heat shrinkable

internally coated sleeve which seals the gland to the cable sheath as shown on SCECO, Central

Region, drawing No. SC/P/665/50 and in accordance with general specification No.5/12 -"Heat

Shrinkable Cable Terminations and Joints" (latest edition).

Dimensions of the sleeve are given in the following table:

S L E E V E

Nominal DiameterTension Cable

Size

(sq. mm)

Length

(mm)

Minimum Thickness

After re-cover (mm)Expanded Re-covered

33Kv 3 X 240 300 3 160 55

13.8Kv

3 X 300

3 X 185

3 X 50

300

300

250

3

3

3

160

160

115

55

55

30

5. FORM OF SUPPLY:

The cable glands should be supplied in the form of 4 different kits as given below:

Type 1: Non-insulated Cable Gland 3x240, 3x300 or 3x185 mm2 cable including:

1- Gland, type A.

2- Worm drive clips.
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Page 6 of 12

1- Heat shrinkable sleeve.

4- Steel nuts, bolts and washers.

1- Nut and washer (for connection of earthing cable).

Type 2: Non-insulated Cable Gland 3 x 50 mm2

cable including:

1- Gland, type B.



4- Steel nuts, bolts and washers1- Nut and washer (for connection of earthing cable).

Type 3: Insulated Cable Gland 3x240, 3x300 or 3x185 mm2

cable including:

1- Gland, type A.


1- Square insulating insert.


4- Steel nuts, bolts and washers (insulated or with insulating devices).

1- Nut and washer (for connection of earthing cable).

Type 4: Insulated Cable Gland 3 x 50 mm2

cable including:

1- Gland, type B.


1- Square insulating insert.


4- Steel nuts, bolts and washers (insulated or with insulating devices).

1- Nut and washer (for connection of earthing cable)

6. DETAILED INSTRUCTION

A detailed instruction shall be included with each gland.

7. PACKING

Glands will be individually packed for shipment.

-----------------------

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Page 7 of 12

8. SCHEDULE OF PARTICULARS

S

No. Description Unit

SCECO(C)

Requirements Bidders Data

SCECO(C) 5/2

SCECO(C) 5/3

91

81

69

49

3.15

3.15

2.52.5

Required

SC/P/655/48

A Type

B Type

Type A Type B Type A Type B

15100

95

86

150

125

115

1.5

3

62.5

57.5

1170

66

66

140

90

90

1

2.5

45

45

1.

2.

3.

4

5.

Cable Specification

13.8kV

33 kV

Cable dimensions that theglands must accept.

-Diameter underneath armour:

3x240 sq. mm 33kV

3x300 sq. mm

3x185 sq. mm 13.8kV

3x50 sq. mm

-Diameter of armour wires:

3x240 sq. mm 33kV

3x300 sq. mm

3x185 sq. mm 13.8kV3x50 sq. mm

Cross core connection and

Interchange of phase.

Reference Drawings

- 3x240 3x300 3x185sq.mm

- 3x 50 sq.mm

Dimensions

- B- D- E- F- L- M- N- S- T- X- Y

mm

mm

mm

mm

mm

mm

mmmm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

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Page 8 of 12

SCHEDULE OF PARTICULARSSheet 2 of 3

S


SCECO(C)

Requirements Bidders Data

Two worm

drive clips

21 for 1 sec.

25 for 2 sec.

Required

Required

Coated or

Anticorrosiontreated steel

9

10 for 3 sec.

Insulated or

Insulating

Devices.

SC/P/665/51

SC/P/665/50

SCECO(C) 5/12

Type A Type B Type A Type B

300

3

160

55

250

3

115

30

6.

7.

8.

9.

10.

Contact between cable armour

and gland:

-Design

-Rating -13.8Kv

-33Kv

Connection of earthing cable.

-Welded Stud M10

-Nut and Washer

Material

Insulated Gland

-insulated insert thickness

-insulation level

-Nuts, bolts, washers

-reference drawing

Covering Sleeve

-reference drawing

-reference specification

-dimensions:

length min. thickness after

recover

nominal diameterexpanded

nominal diameterrecovered

kA

kA

mm

kV

mm

mm

mm

mm
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Page 9 of 12

SCHEDULE OF PARTICULARSS.


SCECO(C)

Requirements

Bidders date

11.

12.13.

Kit Composition

Type 1 non-insulated gland for

3x240, 3x300 or 3x185 sq.mm

cables

-Type A gland

-Worm drive clips-Sleeve

-Steel nuts, bolts & washers

-Nut & washer for earthing cable

Type 2 non-insulated gland for

3x50 sq.mm cables.

-Type B gland

-Worm drive clips

-Sleeve



Type 3 insulated gland for

3x240, 3x300 or 3x185 sq.mm cables

-Type A gland

-Worm drive clips

-Insulating insert

-Sleeve

Steel nuts, bolts & washers (insulated or

with insulating devices)


Type 4: Insulated gland for

3x50. Sq. mm cables

-Type B gland

-Worm drive clips

-Insulating insert

-Sleeve


(insulated or with insulating devices)


Detailed instructionPacking

1

2

14

1

1

2

1

4

1

1

2

1

1

4

1

1

2

1

1

4

1

1 per glandIndividual

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