Страница 42: ДСТУ HD 604 S1:2012/Зміна №1:2012. Зміна №1 (англ) (61674)

NOTE:

These values relate to the cables in table 14.

Requirements for compatibility test

The variation is the difference between the respective values obtained prior to and after heat treatment expressed as a percentage of the formerAPPENDIX

GUIDE TO USE

Contents

1. Scope

2. Object

3. Recommendations for use

   1. Permissible application

   2. Highest permissible voltage

4. Recommendations for storage and transport and disposal

   1. Storage

   2. Transport

   3. Disposal by incineration

   4. Cable end sealing

5. Recommendations for cable laying and installation

   1. General

   2. Environmental conditions

   3. Pulling tensions

   4. Bending radii

   5. Cable installation

1. Tests after installationScope

This Appendix covers the application of cables according to HD 604 Part 5, Section E.

2. Object

The object of this document is to provide recommendations for the selection, storage, disposal, transportation and installation of the cables specified under clause 1. The information given in this Appendix is for guidance only. It does not take precedence over any relevant national regulations or statutory requirements.

3. Recommendations for use

   1. Permissible application

Cables may be installed indoors and outdoors for fixed installations on walls and metallic structures. They may not be installed in waterlogged conditions without reference to the manufacturer.

These cables may be used on Category А, В & C of IEC 183.

4. Recommendations for storage, transport and disposal

   1. Storage

Cable drums should be regularly inspected to assess their physical condition.

Battens, when supplied, should not be removed until cable is required for installation.

Cable drums having a flange diameter exceeding 1m and weighing more than 250kg gross shall be transported in an upright condition. The drums should be protected against movement. Loading and unloading shall be facilitated by suitable devices to avoid damage to both cable and drum. When moving drums due regard must be paid to the weight, method and direction of rolling, protruding nails and wood splinters.

Small quantities of timber or battens which may have been treated with wood preservative may be burnt under carefully controlled conditions in the open.

Both ends of every length of cable shall be sealed in such a manner as to include the oversheath and tq^nhibit the ingress of moisture during storage, delivery and up to the time of jointing.

5. Recommendations for cable laving and installation

   1. General

The choice of cable shall take into account the cable route, method of laying and service conditions. The latter shall include:

1. The adjacency of other cables and their mutual heating effect; the specific earth resistivity, protection against solar radiation; the earth loop impedance; the capability of the cable to withstand the worst anticipated fault conditions of the system.

2. The leakage of stray currents and attack from solvent substances.

3. Soil subsidence and other forms of violent vibrations.

4. Protection against mechanical damage during and after installation.

5. When cables are laid in ducts, the correct size of duct shall be used to avoid damage during installation and overheating.

6. Where cables are laid in surface troughs, there shall be adequate ventilation which, however, will not permit the entry of debris.

7. The cable support system should be designed to avoid damage or danger under normal or fault conditions.

1. The lowest recommended temperatures for installation shall be 0°C but care should be taken to ensure that the cable temperature has been above 0°C for the preceding 24 hours.

2. Loaded cables, especially single core cables, may have surface temperatures which require protection against accidental contact.

The maximum pulling load shall not exceed the following values:

For copper conductors 50N/mm² of CSA For aluminium conductors 30N/mm² of CSA

CSA refers only to the conductor(s).

During installation, no cable shall be bent to a smaller radius than those listed below:

(a) Armoured circular copper conductor 6 x D

(bl All other cables 8 x D

Where D = Tabulated overall diameter.

1. There shall be a significant measure of compatibility between the way in which cables are installed for the test for fire propagation and the actual installations.

2. There shall be compatibility between all jointing materials and components of the cable.

3. All bonds for earthing shall have adequate conductance, be as short and as straight as

possible and be protected against corrosion, especially where dissimilar metals are involved.

6. Tests after installation

These are not mandatory, but when required, shall consist of:

1. D.C. tests on cables

The test voltage, given in table A.1 should be increased gradually to the full value and maintained continuously for 15 minutes. The test should be made between conductors and between each conductor and metallic covering. No breakdown should occur. Repeated d.c. voltage tests may damage the insulation.

Table A.1 : Test voltage after installation

Between each conductor and metallic covering

V 3500 7000

2. Test on oversheath

Where an outer conductive layer is applied to the oversheath, a d.c. voltage of 3kV shall be applied between the underlying armour and the outer conductive layer for one minute. No breakdown should occur.SECTION G : CABLES WITH COPPER CONDUCTORS
AND OPTIONAL CONCENTRIC CONDUCTORS

Replace page 5-G-21 by the following:'BLANK PAGE'

APPENDIX A

GUIDE TO USE

1. Scooe

This Guide to Use is valid for the application of cables according to HD 604 Part 5, Section G.

2. Object

   1. This Guide to Use represents the present stance of technique and shall secure when applied

in its limits the original cable properties after installation.

3. Recommendations for use

   1. Permissible applications

Specified cables according to HD 604 Part 5, Section G may be laid indoors, in air or concrete. Direct laying in the soil or in water is not permitted. Cables without metallic covering are suitable for Class II equipment.

• Highest permissible voltage of three-phase systems: Um = 1.2kV

• Highest permissible voltage of single-phase systems:

(a)two cores insulated: Um = 1.4kV

• b) one core insulated, one core earthed: Um = 0.7kV

The concentric conductor may be used as PE-conductor, PEN-conductor or as a screen.

4. Recommendations for storage and transport

   1. Delivery

The distance between the outer cable layer of a filled-up-cable-delivery-drum and the head of the flange shall be sufficiently high to avoid damages of the cable.

This distance shall be 2D respectively at least 5cm.

In order to determine the size of the delivery-drum use the relation between cable-diameter and core diameter of the relevant delivery-drum given in Table A1.Table Al

Cable Type Core diameter of cable drum*”

The cable-ends have to be sealed waterproof during transport, storage and laying.

Cable drums with flange diameters exceeding 1 m have to be transported with the drum-axis in horizontal position. The drums have to be protected against movement. Loading and unloading shall be made by suitable devices to avoid damage to the cables and to the cable-drums.

Filled-up cable-drums shall be rolled only on short distances over plain solid ground in the direction indicated on the flange. The cable ends have to be tightened.

1. 2. Short cable lengths may be coiled to rings and transported and stored horizontally. The permissible bending radii shall not fall short of the values given in sub-clause 5.4.

2. Recommendation for cable laving

   1. General remarks

The cable route, the laying method and the service conditions shall be taken into account when selecting the type of cable.

In this context the following items shall be taken into account:

1. The service conditions, like concentrations of cable quantities, influence of external heat, protection against solar radiation, which form the basis for the selection of the cable type.

2. Leakage or stray currents and corrosion.

3. Vibrations (foundations of machines, bridges) shakes.

SECTION H : CABLES WITH COPPER CONDUCTORS
WITH AND WITHOUT CONCENTRIC COPPER CONDUCTORS
AND WITH OPTIONAL ARMOURING

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Table 2D (concluded)

Test to be made on all non-metallic components of the cable Values required for each non-metallic component of the cableTable 3 : Type of conductor and nominal c.s.a. of conductors

Table 4 : Assignment of reduced conductors

SECTION К : CABLES WITH COPPER OR ALUMINIUM CONDUCTORS AND OPTIONAL COPPER CONCENTRIC CONDUCTORS OR SCREENS

Introduce new Section К of Part 5 as attached.'BLANK PAGE'

SECTION K: CABLES WITH COPPER OR ALUMINIUM CONDUCTORS AND
OPTIONAL COPPER CONCENTRIC CONDUCTORS OR SCREENS

CONTENTS

1. Scope

2. Addiditional general requirements

   1. Identification of cores

   2. Cable marking

   3. Additional test requirements

3. Cables with copper or aluminium conductors and optional

copper concentric conductors or screens

1. 1. Code designation

   2. Rated voltage

   3. Construction

2. Tests

Tables 1-5

Annex A: Guide to use

Current carrying capacity

REFERENCES

Section К of Part 5 of HD 604 incorporates by dated or undated reference, provisions from other publications. These references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to Section К of Part 5 of HD 604 only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.

EN 60811 Common test methods for insulating and sheathing materials of electric cables

HD 383 Conductors of insulated cables (Endorsing IEC 228 and 228A)

HD 405 Tests on electric cables under fire conditions