GB/T 12706.4-2020_English: PDF (GB/T12706.4-2020)
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Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um=1.2 kV) up to 35 kV (Um=40.5 kV) -- Part 4: Test requirements on accessories for cables with rated voltages from 6 kV (Um=7.2 kV) up to 35 kV (Um=40.5 kV)
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| GB/T 12706.4-2008 | English | 125 |
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Power cables with extruded insulation and their accessories for rated voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV) -- Part 4: Test requirements on accessories for cables with rated voltages from 6kV (Um=7.2kV) up to 35kV (Um=40.5kV)
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Extruded insulation rated voltage of 1 kV (Um = 1. 2 kV) to 35 kV (Um = 40. 5 kV) power cables and accessories -- Part 4: The rated voltage of 6 kV (Um = 7. 2 kV) to 35 kV (Um = 40. 5 kV) power Cable Test requirements on accessories
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GB/T 12706.4-2002
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| Standard ID | GB/T 12706.4-2020 (GB/T12706.4-2020) | | Description (Translated English) | Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um=1.2 kV) up to 35 kV (Um=40.5 kV) -- Part 4: Test requirements on accessories for cables with rated voltages from 6 kV (Um=7.2 kV) up to 35 kV (Um=40.5 kV) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K13 | | Classification of International Standard | 29.060.20 | | Word Count Estimation | 27,273 | | Date of Issue | 2020-03-31 | | Date of Implementation | 2020-10-01 | | Drafting Organization | Shanghai Electric Cable Research Institute Co., Ltd., Shanghai National Cable Testing Center Co., Ltd., China Electric Power Research Institute, Shanghai Sanyuan Cable Accessories Co., Ltd., Long Cable Electric Technology Co., Ltd., 3M China Co., Ltd., Changyuan Electric Power Technology Co., Ltd., Shanghai Yong Jin Electric Technology Co., Ltd., Jiangsu Zhongtian Technology Cable Accessories Co., Ltd., Jiangsu Yucheng Yeji Electrical Equipment Co., Ltd., Beijing ABB High Voltage Switchgear Co., Ltd. | | Administrative Organization | National Standardization Technical Committee of Wire and Cable (SAC/TC 213) | | Proposing organization | China Electrical Equipment Industry Association | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | | Standard ID | GB/T 12706.4-2008 (GB/T12706.4-2008) | | Description (Translated English) | Power cables with extruded insulation and their accessories for rated voltages from lkV (Um=1.2kV) up to 35kV (Um=40.5kV). Part 4: Test requirements on accessories for cables with rated voltages from 6kV (Um=7.2kV) up to 35kV (Um=40.5kV) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K13 | | Classification of International Standard | 29.060.20 | | Word Count Estimation | 27,211 | | Date of Issue | 2008-12-31 | | Date of Implementation | 2009-11-01 | | Older Standard (superseded by this standard) | GB/T 12706.4-2002 | | Quoted Standard | GB/T 2900.10-2001; GB/T 12706.2-2008; GB/T 12706.3-2008; GB/T 12976.3-2008; GB/T 18889-2002; JB/T 8996-1999 | | Adopted Standard | IEC 60502-4-2005, MOD | | Drafting Organization | Shanghai Electric Cable Research Institute | | Administrative Organization | National Standardization Technical Committee of wire and cable | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 23 of 2008 (No. 136 overall) | | Proposing organization | China Electrical Equipment Industry Association | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This standard specifies the rated voltage 3. 6/6kV (7. 2kV) to 26/35kV (40. 5kV) and in accordance with GB/T 12706. 2-2008 or GB/T 12706. 3-2008 requirements extruded insulation power cable accessories type test and test requirements. This part is not included in the special conditions of use of cable accessories, such as overhead cables, submarine cables or marine cables or hazardous environments (potentially explosive atmospheres, fire-resistant cables, seismic conditions) attachments. Previously, partially covered by this product is based on access to national standards and/or operational characteristics satisfactorily verified before receiving recognition. This section does not negate the existing recognition, but according to this standard or specification previously obtained product is not approved | | Standard ID | GB/T 12706.4-2002 (GB/T12706.4-2002) | | Description (Translated English) | Extruded insulation rated voltage of 1 kV (Um = 1. 2 kV) to 35 kV (Um = 40. 5 kV) power cables and accessories - Part 4: The rated voltage of 6 kV (Um = 7. 2 kV) to 35 kV (Um = 40. 5 kV) power Cable Test requirements on accessories | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K13 | | Classification of International Standard | 29.060.20 | | Word Count Estimation | 20,256 | | Date of Issue | 2002-10-08 | | Date of Implementation | 2003-04-01 | | Adopted Standard | IEC 60502-4-1997, MOD | | Drafting Organization | Shanghai Cable Research Institute | | Administrative Organization | National Wire and Cable Standardization Technical Committee | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 23 of 2008 (No. 136 overall) | | Proposing organization | China Electrical Appliances Industry Association | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China |
GB/T 12706.4-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.060.20
K 13
Replacing GB/T 12706.4-2008
Power Cables with Extruded Insulation and Their Accessories for
Rated Voltages from 1kV (Um = 1.2kV) up to 35kV (Um = 40.5kV) –
Part 4: Test Requirements on Accessories for Cables with Rated
Voltages from 6kV (Um = 7.2kV) up to 35kV (Um = 40.5kV)
[IEC 60502-4:2010, Power Cables with Extruded Insulation and Their Accessories for
Rated Voltages from 1kV (Um = 1.2kV) up to 30kV (Um = 36kV) – Part 4: Test
Requirements on Accessories for Cables with Rated Voltages from 6kV (Um = 7.2kV)
up to 30kV (Um = 36kV), MOD]
ISSUED ON: MARCH 31, 2020
IMPLEMENTED ON: OCTOBER 1, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative References ... 6
3 Terms and Definitions ... 7
4 Type of Accessory ... 9
5 Voltage Designations and Maximum Conductor Temperatures ... 9
6 Assembly of Accessories to be Tested ... 9
7 Range of Approval ... 11
8 Test Sequences ... 12
9 Test Results ... 13
Annex A (Informative) Identification of Test Cable ... 32
Bibliography ... 33
Foreword
GB/T 12706 Power Cables with Extruded Insulation and Their Accessories for Rated Voltages
from 1kV (Um = 1.2kV) up to 35kV (Um = 40.5kV) consists of the following 4 parts:
--- Part 1: Cables for Rated Voltage of 1kV (Um = 1.2kV) and 3kV (Um = 3.6kV);
--- Part 2: Cables for Rated Voltage of 6kV (Um = 7.2kV) and 30kV (Um = 36kV);
--- Part 3: Cables for Rated Voltage of 35kV (Um = 40.5kV);
--- Part 4: Test Requirements on Accessories for Cables with Rated Voltages from 6kV (Um
= 7.2kV) up to 35kV (Um =40.5kV).
This Part is Part 4 of GB/T 12706.
This Part replaced GB/T 12706.4-2008 Power Cables with Extruded Insulation and Their
Accessories for Rated Voltages from 6kV (Um = 7.2kV) [Translator Note: here it should be 1kV
(Um = 1.2kV)] up to 35kV (Um = 40.5kV) – Part 4: Test Requirements on Accessories for Cables
with Rated Voltages from 6kV (Um = 7.2kV) up to 35kV (Um =40.5kV).
Compared with GB/T 12706.4-2008, this Part made the following major technical changes
besides the editorial modifications:
--- Added description and test requirements for internally tapered plug-in type separatable
connectors (see 3.11 and Clause 8 of this Edition);
--- Add the labeling of applicable standards for connecting hardware (see 6.1.2 of this
Edition);
--- Add the labeling of terminal box contents (see 6.1.3 of this Edition);
--- Add the content of the conductor cross-section coverage of separatable connectors in the
approved scope (see Clause 7 of this Edition);
--- Add outdoor terminal immersion test (see Table 2 of this Edition);
--- Modify the axial force data of the operating ring test in the test procedure for screened
dead-break connectors (see Table 5 of this Edition; Table 7 of the 2008 Edition);
--- Add the constant voltage load cycle test in air for additional tests of minimum and
maximum conductor cross-sections (see Table 9 of this Edition);
--- Modify the number of constant voltage load cycles in the additional tests for approval of
different types of cable insulation shields and from round conductors to formed
conductors (see Table 10 of this Edition; Table 11 of the 2008 Edition);
--- Add moisture test for unscreened dead-break connectors (see Table 13 of this Edition).
This Part used redrafting method to modify and adopt IEC 60502-4:2010 Power Cables with
Extruded Insulation and Their Accessories for Rated Voltages from 1kV (Um = 1.2kV) up to
30kV (Um = 36kV) – Part 4: Test Requirements on Accessories for Cables with Rated Voltages
from 6kV (Um = 7.2kV) up to 30kV (Um = 36kV).
Compared with IEC 60502-4:2010, this Part mainly made the structural changes as follows:
--- According to the requirements of GB/T 1.1-2009, the tables are numbered in the order in
which they are mentioned. Starting from Table 2, the correspondence between the tables
in this Part and the IEC 60502-4:2010 tables is that Table 2 corresponds to Table 5; Table
3 corresponds Table 6; Table 4 correspond to Table 7; Table 5 corresponds to Table 8;
Table 6 corresponds to Table 9; Table 7 corresponds to Table 10; Table 8 corresponds to
Table 2; Table 9 corresponds to Table 11; Table 10 corresponds to Table 12, and Table 11
corresponds to Table 3; Table 12 corresponds to Table 4; Table 13 corresponds to Table
13; and Table 14 corresponds to Table 14;
--- Add Subclause 7.9.
Compared with IEC 60502-4:2010, the major technical differences and their causes between
this Part and IEC 60502-2:2010 are as follows:
--- Regarding normative references, this Part has been adjusted with technical differences to
adapt to China's technical conditions. The adjustments are reflected in Clause 2
"Normative References". The specific adjustments are as follows:
● Add reference to GB/T 2900.10 (see Clause 3);
● Replace IEC 60502-2:2005 with GB/T 12706.2, which is modified to adopt
international standards (see Clause 1, Clause 5 and 6.1.1);
● Add reference to GB/T 12706.3 (see Clause 1, 5.1, 5.2 and 6.1.1);
● Replace IEC 61442:2005 with GB/T 18889-2002, which is modified to adopt
international standards (see Tables 1 ~ 10 and Table 12);
● Replace IEC 60183 with JB/T 8996, which has a non-equivalent degree of
consistency with international standards (see 5.1);
● Delete IEC 61238-1.
--- In order to adapt to China's technical requirements, add the 35kV voltage level (see
Clause 1);
--- In order to adapt to China's technical requirements, add the description and test
requirements for internally tapered plug-in type separable connectors (see 3.11 and
Clause 8);
--- Delete the term "wide range attachment terms" (see Clause 3);
Power Cables with Extruded Insulation and Their Accessories for
Rated Voltages from 1kV (Um = 1.2kV) up to 35kV (Um = 40.5kV) –
Part 4: Test Requirements on Accessories for Cables with Rated
Voltages from 6kV (Um = 7.2kV) up to 35kV (Um = 40.5kV)
1 Scope
This part of GB/T 12706 specifies the requirements for type test of accessories for extruded
insulated power cables with rated voltages from 3.6/6kV (7.2kV) to 26/35kV (40.5kV) and
meet the requirements of GB/T 12706.2 or GB/T 12706.3.
This Part applies to accessories for extruded insulated power cables with rated voltages from
3.6/6kV (7.2kV) to 26/35kV (40.5kV).
This Part does not apply to cable accessories used under special conditions, such as overhead
cables, submarine cables or shipboard cables or accessories for hazardous environments
(explosive atmospheres, fire-resistant cables, seismic conditions).
2 Normative References
The following documents are essential to the application of this Document. For the dated
documents, only the versions with the dates indicated are applicable to this Document; for the
undated documents, only the latest version (including all the amendments) is applicable to this
Document.
GB/T 2900.10 Electrotechnical Vocabulary – Electric Cables [GB/T 2900.10-2013, IEC
60050(461):2008, IDT]
GB/T 12706.2 Power cables with extruded insulation and their accessories for rated
voltages from 1 kV (Um=1.2 kV) up to 35 kV (Um=40.5 kV) - Part 2: Cables for rated
voltages from 6 kV (Um =7.2 kV) up to 30 kV (Um =36 kV) (GB/T 12706.2-2020, IEC
60502-2:2014, MOD)
GB/T 12706.3 Power cables with extruded insulation and their accessories for rated
voltages from 1kV (Um =1.2kV) up to 35kV (Um =40.5kV) - Part 3: Cables for rated
voltages of 35kV (Um =40.5kV)
GB/T 18889-2002 Electric cables-test methods for accessories for power cables with rated
the number of samples in Figure 3.
7.4 Approval is dependent on the cable insulation tested as detailed in Table 11.
7.5 The additional tests specified in Table 10 shall be carried out to achieve extension of
approval for different types of cable insulation semiconducting screens. Stop ends shall be
tested as in Table 4 using half the number of samples in Figure 3.
7.6 Approval obtained by testing on a non-longitudinally water-blocked type of cable shall be
extended to a cable with means of longitudinal water-blocking in the metallic screen area but
otherwise of the same design. The converse shall not apply.
7.7 Tests performed on three-core accessories shall be deemed to cover single-core accessories
of the same design. The converse shall not apply.
7.8 Compliance of an accessory tested for a specified U0 shall extend to operation of the
accessory at a lower U0 provided that the radial electrical stress at the insulation screen of the
cable of lower U0 is not greater than that of the test cable. In addition, for separable connectors,
the screen fault current initiation test shall be carried out at the lowest U0 for which compliance
is required.
7.9 The products covered by this Part are approved based on GB/T 12706.4-2008 and/or after
satisfactory operating characteristics verification. This Part does not negate existing approvals,
but products approved in accordance with GB/T 12706.4-2008 or specifications cannot obtain
approval in this Part unless special tests are conducted on them. If an accessory passes the test,
these tests do not need to be repeated unless there are changes in materials, design or
manufacturing processes that may affect operating characteristics.
8 Test Sequences
Tests applicable to various accessories shall be carried out in accordance with the corresponding
program tables and diagrams listed in Table 12.
For terminations and joints, if the test procedures and requirements are the same, they can be
tested together.
The test procedures and requirements for internally tapered plug-in type separable connectors
can be carried out according to the provisions of Table 6 (moisture removal test).
The test procedures and requirements for screened bolted-type separable connectors can be
carried out in accordance with Table 5 (except for plug-in and pull-out tests, operating ring tests,
operating force tests and capacitance test point tests).
The test procedures and requirements for unscreened bolted-type separable connectors can be
carried out in accordance with Table 6 (except plug-in and pull-out test).
......
GB/T 12706.4-2008
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.060.20
K 13
Replacing GB/T 12706.4-2002
Power Cables with Extruded Insulation and their Accessories for
Rated Voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV) -
Part 4: Test Requirements on Accessories for Cables with Rated
Voltages from 6kV (Um=7.2kV) up to 35kV (Um=40.5kV)
(IEC 60502-4:2005, Power Cables with Extruded Insulation and their Accessories for
Rated Voltages from 1kV (Um=1.2kV) up to 30kV (Um=36kV) – Part 4: Test
Requirements on Accessories for Cables with Rated Voltages from 6kV (Um=7.2kV)
up to 30kV (Um=36kV), MOD)
ISSUED ON: DECEMBER 31, 2008
IMPLEMENTED ON: NOVEMBER 01, 2009
Issued by: General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative References ... 6
3 Terms and Definitions ... 7
4 Types of Accessory ... 9
5 Voltage Designations and Maximum Conductor Temperature ... 10
6 Assembly of Accessories to be Tested ... 10
7 Range of Approval ... 12
8 Test Procedures ... 13
9 Test Results ... 14
Appendix A (Informative) Identification of Test Cable ... 32
Appendix B (Informative) Technical Differences and their Causes between this
Part and IEC 60502-4:2005 ... 33
Foreword
GB/T 12706 Power Cables with Extruded Insulation and their Accessories for Rated
Voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV) can be divided into the
following 4 parts:
--- Part 1: Cables for Rated Voltages from 1kV (Um=1.2kV) up to 3kV (Um=3.6kV);
--- Part 2: Cables for Rated Voltages from 6kV (Um=7.2kV) up to 30kV (Um=36kV);
--- Part 3: Cables for Rated Voltages of 35kV (Um=40.5kV);
--- Part 4: Test Requirements on Accessories for Cables with Rated Voltage from
6kV (Um=7.2kV) up to 35kV (Um=40.5kV).
This Part belongs to Part 4 of GB/T 12706.
This Part modifies and adopts IEC 60502-4:2005 Power Cables with Extruded
Insulation and their Accessories for Rated Voltages from 1kV (Um=1.2kV) up to 30kV
(Um=36kV) – Part 4: Test Requirements on Accessories for Cables with Rated Voltages
from 6kV (Um=7.2kV) up to 30kV (Um=36kV); Edition 2 (English Version).
This Part was redrafted according to IEC 60502-4:2005. In addition to adding the
informative Annex B, the structure of this Part is the same as IEC 60502-4:2005.
Considering Chinese national conditions, when adopting IEC 60502-4:2005, some
changes have been made in this Part. The relevant technical differences have been
incorporated into the text and are marked with vertical single lines in the margins of
the articles they cover; and the Annex B gives a list of these technical differences and
their causes.
For the sake of use, when adopting IEC 60502-4:2005, this Part makes the following
editorial changes:
--- Change “this Standard” into “this Part”;
--- Delete the foreword of IEC 60502-4:2005;
--- Replace the comma “,” working as the decimal point by the decimal point “.”.
This Part replaced GB/T 12706.4-2002 Power Cables with Extruded Insulation and
their Accessories for Rated Voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV) –
Part 4: Test Requirements on Accessories for Cables wit Rated Voltages from 6kV
(Um=7.2kV) up to 35kV (Um=40.5kV).
Compared with GB/T 12706.4-2002, This Part has the major changes as follows:
Power Cables with Extruded Insulation and
their Accessories for Rated Voltages from 1kV
(Um=1.2kV) up to 35kV (Um=40.5kV) – Part 4: Test
Requirements on Accessories for Cables with Rated
Voltages from 6kV (Um=7.2kV) up to 35kV (Um=40.5kV)
1 Scope
This Part of GB/T 12706 specifies the type test and test requirements of the
accessories for extruded insulation power cables with rated voltages from 3.6/6 kV
(7.2kV) up to 26/35 kV (40.5kV), complying with GB/T 12706.2-2008 or GB/T 12706.3-
2008.
This Part excludes the accessories used under special conditions, such as aerial
cables, submarine or ship cables or hazardous situations (explosive environments, fire
resistant cables or seismic conditions).
Formerly, approvals on products covered by this Part have been achieved on the basis
of obtaining the national standards and/or the demonstration of satisfactory service
performance. This Part does not invalidate existing approvals. However, products
approved according to those former standards or specifications cannot claim approval
to this Part unless specifically tested to it.
It is not necessary to repeat these tests, once pass the tests, unless changes are made
in the materials, design or manufacturing process which might affect the service
performance characteristics...
Test methods are included in GB/T 18889-2002.
2 Normative References
The provisions in following documents become the provisions of this Part through
reference in this Part of GB/T 12706. For dated references, the subsequent
amendments (excluding corrigendum) or revisions do not apply to this Part, however,
parties who reach an agreement based on this Part are encouraged to study if the
latest versions of these documents are applicable. For undated references, the latest
edition of the referenced document applies.
GB/T 2900.10-2001 Electrotechnical Vocabulary – Electric Cables (IEC 60050
(461):1984, IDT)
GB/T 12706.2-2008 Power Cables with Extruded Insulation and their Accessories
for Rated Voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV) – Part 2: Cables
for Rated Voltages from 6kV (Um=7.2kV) up to 30kV (Um=36kV) (IEC 60502-
2:2005, Power Cables with Extruded Insulation and their Accessories for Rated
Voltages from 1kV (Um=1.2kV) up to 30kV (Um=36kV) – Part 2: Cables for Rated
Voltages from 6kV (Um=7.2kV) up to 30kV (Um=36kV), MOD)
GB/T 12706.3-2008 Power Cables with Extruded Insulation and their Accessories
for Rated Voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV) – Part 3: Cables
for Rated Voltage of 35kV (Um=40.5kV) (IEC 60502-2:2005, Power Cables with
Extruded Insulation and their Accessories for Rated Voltages from 1kV (Um=1.2kV)
up to 30kV (Um=36kV) – Part 2: Cables for Rated Voltages from 6kV (Um=7.2kV)
up to 30kV (Um=36kV), NEQ)
GB/T 12976.3-2008 Paper-Insulated Power Cables and their Accessories wit
Rated Voltages up to and including 35kV (Um=40.5kV) – Part 3: Test on Cables
and their Accessories (IEC 60055-1:2005, Paper-Insulated Metal-Sheathed
Cables for Rated Voltages up to 18/30kV (with Copper or Aluminum conductors
and Excluding Gas-Pressure and Oil-Filled Cables) – Part 1: Tests on Cables and
their Accessories, MOD)
GB/T 18889-2002 Electric Cables – Test Methods for Accessories for Power
Cables with Rated Voltages from 6kV (Um=7.2kV) up to 35kV (Um=40.5kV) (IEC
61442:1997, Test Methods for Accessories for Power Cables wit Rated Voltages
from 6kV (Um=7.2kV) up to 30kV (Um=36kV), MOD)
JB/T 8996-1999 Guide to the Selection of High-Voltage Cables (eqv IEC
60183:1984)
3 Terms and Definitions
For the purpose of this Part, the terms and definitions defined in GB/T 2900.10-2001
and the following apply.
3.1 Connector
Metallic device to connect cable conductors together.
3.2 Termination
Device fitted to the end of a cable to ensure electrical connection with other parts of
the system and to maintain the insulation up to the point of connection.
Separable connector in which the electrical contact is made by a sliding device.
3.15 Bolted-type separable connector
Separable connector in which the electrical contact is made by a bolted device.
3.16 Deadbreak connector
Separable connector designed to be connected or disconnected on de-energized
circuits only.
3.17 Loadbreak connector
Separable connector designed to be connected or disconnected on energized circuits.
3.18 Range-taking accessory
Accessory designed to take more than one cross-section of cable.
3.19 Tracking
Irreversible degradation by formation of paths, which are conductive even under dry
conditions, starting and developing on the surface of an insulating material and which
may occur on surfaces in contact with air and also on the interfaces between different
insulating materials.
3.20 Erosion
Irreversible and non-conducting degradation of the surface of the insulator that occurs
by loss of material, and which may be uniform, localized or tree shaped.
NOTE: Shallow surface traces, commonly tree-shaped, may occur on terminations, after partial
flashover. These traces are acceptable as long as they are non-conductive. When they are
conductive, they are classed as tracking.
3.21 Metallic housing
Metal enclosure in intimate contact with the outer screen of a separable connector and
having at least the same current carrying capacity to earth as the metallic screen of
the cable with which the separable connector is to be used.
4 Types of Accessory
The accessories covered by this Part are listed below:
--- indoor and outdoor terminations of all structures, including terminal boxes;
thermal or mechanical performance of the test assemblies...
NOTE: Contact with chemicals, e.g. transformer oil, may affect the properties of the accessory
and shall be avoided.
6.2.4 Unless otherwise specified, separable connectors shall be connected to their
mating bushing...
6.2.5 The connection between the terminal under test or the separable connector and
the terminal or bushing shall have the same conductive cross-sectional area as the
cable conductor
6.2.6 The minimum phase-to-phase and phase-to-earth clearances of the unscreened
separable connectors recommended by the manufacturer shall be tested.
6.2.7 Where branch joints are to be tested, only the main cable shall carry the heating
current.
6.2.8 The main details regarding test mounting, especially supporting devices, shall be
recorded.
6.2.9 Test arrangements and number of samples are detailed in Figures 1 ~ 5.
7 Range of Approval
7.1 One type of range-taking accessories and non- range-taking accessories shall use
one of the conductor cross-sections specified in 6.2.1 to successfully complete the
corresponding type test items specified in this Part listed in Tables 4 to 9, and shall be
considered valid for all cross-sections in the range from 95mm2 to 300mm2.
Extension of approval to a range wider than that given above shall be achieved by
carrying out the additional tests listed in Table 10 on the smallest and/or largest
conductor cross-sectional areas of the required range.
7.2 Approval is independent of the cable conductor material; tests may therefore be
carried out using cables with either aluminum or copper conductors.
7.3 Tests performed on accessories installed on cables having shaped conductors
shall be deemed to cover the same type of accessory when used on cables having
circular conductors. The converse will not apply.
In order to achieve extension of approval from circular to fan-shaped conductors,
additional tests shall be performed according to Table 11. Stop-ends shall be tested as
in Table 6 using half the number of samples in Figure 3.
7.4 Approval is dependent on the cable insulation tested as detailed in Table 2.
......
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