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BS 7922:2004

BS 7922:2004

$189.07

Electric cables. Fluid-filled, paper- and PPL-insulated, metal-sheathed cables and accessories for alternating voltages up to and including 400 kV (Um = 420 kV). Requirements and test methods

Published By Publication Date Number of Pages
BSI 2004 46
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This British Standard specifies tests and requirements for radial field, fluid-filled, paper or polypropylene paper laminate (PPL) insulated metal-sheathed cables and their accessories, which operate with a minimum static pressure of between 20 kPa (0.2 bar) and 300 kPa (3.0 bar) inclusive, a maximum static pressure of not more than 800 kPa (8.0 bar) and a minimum transient pressure of not less than 20 kPa (0.2 bar)1).

NOTE The cables in this British Standard are specifically excluded from the scope of the Pressure Equipment Directive.

It also specifies tests for cables and accessories with maximum static pressures exceeding 800 kPa (8.0 bar).

This British Standard is applicable to cables and accessories intended for use in systems with nominal voltages not exceeding 400 kV between phases.

PDF Catalog

PDF Pages PDF Title
1 BRITISH STANDARD
2 Committees responsible for this British�Standard
3 Contents
5 1 Scope
2 Normative references
6 3 Terms and definitions
3.1 cables screened with carbon-black paper
3.2 cables not screened with carbon-black paper
3.3 rated voltage
3.4 rated voltage
3.5 maximum voltage
3.6 peak voltage
4 Voltage designation
7 5 Characteristics of cables and accessories
6 Test categories, frequency and conditions
6.1 Categories of tests
8 6.2 Frequency of tests
Table 1 Number of samples for sample tests
6.3 Test conditions
9 7 Routine tests on cables
7.1 General
7.2 Conductor resistance test
7.3 Capacitance test
7.4 Tan
10 Table 2 Tan
Table 3 Tan
7.5 High-voltage test
7.6 Test on corrosion-resistant coverings
11 Table 4 Standard values of system voltages and test voltages recommended for cables to�be�used in 3-phase…
8 Sample tests on cables
8.1 Measurements of thickness
12 8.2 Bending test
Table 5 Test cylinder diameters for bending test
8.3 Quality of insulation paper
13 9 Routine tests on accessories
9.1 General
9.2 Hydraulic test
Table 6 Internal test pressure
9.3 Pressure/feed tanks
14 Table 7 Pressure/volume characteristics
9.4 DC voltage test on joint sleeves and bonding lugs
10 Sample tests on accessories
10.1 Procedure
10.2 Requirement
15 11 Type tests on cables and accessories
11.1 General
11.2 Measurement of thickness of insulation
11.3 Test conditions
16 11.4 Electrical sequence tests
19 Table 8 Waveshape
Table 9 Voltage levels
21 Table 10 Lightning impulse test voltage levels
12 Non-electrical type tests on cables
12.1 General
12.2 Internal thermal resistance of complete cable
22 12.3 Test on pressure-retaining sheath
12.4 Test on tail cable sheaths
23 12.5 Oversheath tests
24 13 Non-electrical type tests on accessories
13.1 General
13.2 Buried joints
25 Table 11 Impulse voltage test levels
13.3 Outdoor terminations
table 12 Salt fog test voltage levels
26 13.4 Gas-immersed terminations
14 Tests and requirements for direct reading pressure gauges
14.1 Classification
Table 13 Classification of gauges
14.2 Ranges
27 14.3 Performance
14.4 Material and construction
28 14.5 Electrical contacts
29 Figure 1 Diagram showing internal electrical connections
14.6 Type approval tests
30 Table 14 Climatic chamber temperatures for temperature limit tests
32 14.7 Routine tests
14.8 Sample tests (Class�2A and Class�2B gauges only)
15 Tests after installation
15.1 High voltage d.c. test
33 Table 15 High voltage test levels
15.2 Conductor d.c. resistance
15.3 Voltage test on oversheath and other sheath insulation
15.4 Sheath voltage limiters
Table 16 SVL test parameters
34 15.5 Link contact resistance test
Table 17 Maximum contact resistance values
15.6 Fluid flow test
15.7 Impregnation coefficient
35 15.8 Positive and zero sequence impedances
36 16 Tests on ancillary equipment
16.1 Tests and requirements for cable bonding leads
37 Table 18 Construction of single core bonding leads
Table 19 Construction of concentric bonding leads
39 Table 20 Test voltages for bonding leads
Table 21 Conductor resistance
16.2 Tests and requirements for SVLs
41 16.3 Physical requirements for link housings
Table 22 Short circuit requirements
43 16.4 Type testing requirements for link housings
Table 23 Impulse voltage withstand levels
44 Annex A (informative) Methods of heating cable samples
a.1 Heating methods
A.2 Control of the temperatures
A.3 Determination of the temperature
Annex B (informative) Pressure drop

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BS 7922:2004
$189.07