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GB 9089.5-2008: [GB/T 9089.5-2008] Electrical installations for outdoor sites under heavy conditions -- Part 5: Operating requirements
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GB 9089.5: Historical versions
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[GB/T 9089.5-2008] Electrical installations for outdoor sites under heavy conditions -- Part 5: Operating requirements
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| GB 9089.5-1995 | 399 |
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Eletrical installations for outdoor sites under heavy conditions. Operating requirements
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Basic data
Standard ID: GB 9089.5-2008 (GB9089.5-2008)
Description (Translated English): [GB/T 9089.5-2008] Electrical installations for outdoor sites under heavy conditions -- Part 5: Operating requirements
Sector / Industry: National Standard
Classification of Chinese Standard: K09
Classification of International Standard: 29.020
Word Count Estimation: 10,187
Date of Issue: 2008-06-18
Date of Implementation: 2009-03-01
Older Standard (superseded by this standard): GB 9089.5-1995
Quoted Standard: GB/T 9089.1-2008; GB/T 9089.2-2008
Adopted Standard: IEC 60621-5-1987, IDT
Regulation (derived from): Announcement of Newly Approved National Standards No. 10 of 2008 (total 123)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This Chinese standard relates to personal safety in the normal operating procedures. These programs can be different from the certain control operations performed under the conditions of the system. GB/T 9089. 1-2008 range applicable to this standard.
GB 9089.5-2008: [GB/T 9089.5-2008] Electrical installations for outdoor sites under heavy conditions -- Part 5: Operating requirements
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Electrical installations for outdoor sites under heavy conditions.Part 5. Operating requirements
ICS 29.020
K09
National Standards of People's Republic of China
GB 9089.5-2008/IEC 60621-5. 1987
Replacing GB 9089.5-1995
Electrical installations in harsh outdoor conditions
Part 5. Operational requirements
(IEC 60621-5. 1987, IDT)
Published 2008-06-18
2009-03-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Foreword
In addition to the Chapter 1, Chapter 2, and Chapter 3 of Appendix A content, the rest is mandatory.
GB 9089 "Electrical installations in harsh outdoor conditions" is divided into the following parts.
--- Part 1. Scope and definitions;
--- Part 2. General protection requirements;
--- Part 3. General requirements for equipment and accessories;
--- Part 4. Requirements means;
--- Part 5. Operational requirements.
This section GB 9089 series of standards Part 5, identical with IEC 60621-5. 1987 Electrical installations of "harsh outdoor conditions
Part 5. Operational requirements "(in English).
This part is a revision of the "electric apparatus operating requirements under harsh outdoor conditions" GB 9089.5-1995 is.
This section compared with GB 9089.5-1995, except some changes in the text, the main difference relates to the following.
--- in accordance with GB/T 1.1-2000 and GB/T 20000.2-2001, and the contents of the re-GB 9089.5-1995
New editor;
--- the original standard name "Electrical apparatus operating requirements under harsh outdoor conditions" modify Electrical installations of "harsh outdoor conditions
Part 5. Operation Requirements ";
--- The term portion as defined GB 7251 series of standards on a consistent translation for equipment used in the industry;
--- increasing requirements for operating in the vicinity of the collector/overhead line under consideration;
--- on fire is not currently required.
Appendix A of this section is an informative annex.
This partial replacement GB 9089.5-1995 "electrical device operating requirements under harsh outdoor conditions."
This section was proposed by China Electrical Equipment Industrial Association.
This part is the responsibility of the National Technical Committee of Standardization low voltage switchgear and control equipment.
This section was drafted. Tianjin Institute of Electrical Transmission Design, Tianjin-day electric power distribution Co., Ltd., Beijing Coal Electric Co., Ltd.,
Hangzhou welcomed the US Electrical Equipment Manufacturing Co., Ltd., Linhai City Yiu-ming Power Equipment Co., Ltd., Beijing State Power Technology Co., Ltd. Kang.
The main drafters of this section. Shu Xiuwen, Europe Hui'an, Wang Yazhi, Fu Chunjiang, Luo Zhengyang, Li Da.
This section replaced the standard previously issued as follows.
--- GB 9089.5-1995.
GB 9089.5-2008/IEC 60621-5. 1987
Electrical installations in harsh outdoor conditions
Part 5. Operational requirements
Range 1
This part of GB 9089 specifies the procedures to ensure the normal operation of personal safety should be performed. These programs may be different than in certain control
Performed by the system under operation conditions.
Range GB/T 9089.1-2008 apply to this section.
2 Normative references
Terms of the following documents constitute provisions of this section by reference in this part of GB 9089. For dated references,
All subsequent amendments (excluding corrections) or revisions do not apply to this section, however, encouraged to reach an agreement under this section
Whether the parties to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB/T 9089.1-2008 electrical installation in harsh outdoor conditions Part 1. Scope and definitions (IEC 60621-1. 1987,
IDT)
Electrical installations Part 2 under harsh outdoor conditions 9089.2-2008 GB/T . General protection requirements (IEC 60621-2.
1987, MOD)
3 Terms and Definitions
GB/T 9089.1-2008 content applicable to this section.
Four pairs of entry into the restricted operating area
4.1 into the normal operating area
Any person can be close to the normal operating region in accordance with the requirements set 9089.2-2008 Chapter 4 of GB/T all obscuration and
case.
GB/T 9089.2-2008 in 4.2.3b), c), d) or e) with the exception of the type described, masking or housing by qualified personnel or designated
Staff can disassemble and move. When the housing is moved and masking or the exposed live parts not isolated, according to the present section 5.3, should be installed temporary
Masking and warning signs.
4.2 into the electrical operating area and the area enclosed electrical operation
Unless all exposed live parts operating in the region have taken isolation measures in accordance with 5.3, only the following persons allowed to enter the electrical operation
And a closed region for electrical operation region.
a) Professional;
b) the designated person;
c) accompanied by a person of ordinary professional or designee.
5 operates the near exposed energized parts
5.1 General requirements
When required to operate near the rated voltage greater than 50V AC or DC 120V exposed live parts, shall meet the following requirements
one.
a) should be 5.2 to comply with specified minimum operating close distance;
GB 9089.5-2008/IEC 60621-5. 1987
b) To deal with exposed live parts isolated 5.3;
c) specify the persons or professionals should comply with the special procedure provided for in 5.4.
5.2 The minimum approach distance
Except as permitted by 5.4, any person or object in contact with people close to the closing distance in Table 1 exposed live parts, special
The operation of the device except for the insulation.
Note 1. In order to comply with the minimum approach distance requirements, ropes, masking or similar measures can be adopted.
Note 2. Table 1 predetermined minimum approach distance is fixed in position and a stable working surface of the charging member is exposed based, in these cases does not apply to
Party, taking into account the expected displacement should increase the minimum approach distance.
Note 3. Table 1 may be necessary to increase the minimum approach distance of a predetermined operation in the vicinity of overhead lines.
When exposed personnel operating near the charging member, the use of long items such as. special care should ladder, metal tripod, tubes and the like. Recommended water
To level when at least two people to move these objects.
Table 1 Minimum distance a person approaching
Rated working voltage/kV (rms phase - phase) minimum approach distance/mm
Note 1. The minimum approach distance is not specified, to avoid contact with live parts.
Note 2. The minimum rated voltage of 35kV and 66kV in the case of a proximity distance by the manufacturer, in consultation with the user, referring to the data selection determination.
a predetermined minimum approach distance allows the actual system voltage variation may reach 20% of rated voltage.
5.3 Isolation of exposed live parts
When Table 1 must be less than a predetermined minimum approach distance near exposed energized from the operation member, the electric charging respond exposed portion
Source isolation. This requirement specified by 5.4 or professionals operation does not apply.
Means greater than the rated voltage of 1000V, the spacer should include short and a ground connecting member. Professionals should ensure that every
Off, short circuit and ground properly completed and start operation after confirmation. During the test, shorting and ground in a short time can be removed, but it should take appropriate measures
Imposed to ensure the safety of personnel.
Professionals should ensure that all personnel in the area of operation clear and isolated parts of the region are engaged in work. Professionals should know
With dangerous voltage induced by the charged conductors of adjacent possible, where necessary should ensure that appropriate protective measures.
In the exposed portion of the conductive isolation has been implemented, including a position adjacent to and associated components have been shorted to ground, and take the flag should be clearly
Protective measures to avoid touching the exposed live parts adjacent.
5.4 parts of an operation near exposed energized
5.4.1 General requirements
When the contact position must be greater than the minimum 1000V rated voltage in or near exposed energized parts ratio given in Table 1 the operation of
Close small and can not be determined has been isolated according to embodiment 5.3 pairs of members, as long as the charging member is provided at a predetermined 5.4.2 and 5.4.3
The measures that can be operated.
NOTE. to allow operation on the charging member, the maximum voltage limit is sometimes applied.
GB 9089.5-2008/IEC 60621-5. 1987
5.4.2 responsible
Shall be designated by the professionals in charge of the operation. Before operation starts, professionals should be performed as follows.
a) preparing a detailed description of the type and position of the operation performed;
b) prepare a detailed plan for the methods and procedures used to perform the operation, including the specific work of each person;
c) ensure that all relevant staff fully understand their responsibilities and considerations.
Professionals should ensure that each of the operators concerned operate under supervision.
5.4.3 Protective Equipment
We should adopt appropriate protective equipment, and these devices should be regularly checked to ensure they remain effective.
NOTE. live line equipment and tools required for the operation, see the relevant specifications.
Move to the vicinity of overhead lines 6 and mechanical equipment of the vehicle
6.1 General requirements
6.4 In addition to the special case of the distance can be reduced, moving vehicles and machinery in the vicinity of overhead lines should comply with 6.2 and 6.3
Specified minimum distance.
6.2 predetermined minimum distance and 6.3 should also apply to vehicles and people on the machinery.
Overhead lines have been isolated in accordance with 5.3, the minimum distance specified in 6.2 and 6.3 do not apply.
Vertical spacing 6.2
When the vehicle passes below the machinery and overhead lines, should comply with a predetermined minimum distance in Table 2. Pitch means a vehicle or machinery of
The highest point of the distance to the overhead line.
When the vehicle or mechanical equipment due to the need to work under the overhead line through (such as specifying the traffic fork), but may not satisfy
When a predetermined minimum distance in Table 2, Table 2 should be provided in accordance with the maximum height of the overhead line to the scale above the road surface, for example, setting the post.
6.3 Horizontal Spacing
When the vehicle or machinery in the vicinity of overhead line run, and the height of the vehicle or machinery does not reach the minimum vertical spacing 6.2
When specified, the corresponding value should be kept not smaller than a predetermined horizontal spacing of the Table 2. When the vehicle or operating machinery horizontal direction can not completely control
While, larger horizontal spacing should be maintained.
Conditions that allow reduced pitch 6.4
One of the following cases, 6.2 and 6.3 can be reduced to a predetermined spacing.
a) mechanical equipment or vehicle running on the road defined, for example. a vehicle running on a track;
b) a vehicle or machinery operating under the supervision of the designated person or professionals;
c) protection of the vehicle or indirect contact mechanical equipment comply with GB/T 9089.2-2008 is.
Table 2 vehicles and machinery and equipment at a minimum distance and overhead line run at near
Rated working voltage/kV
(Rms phase - phase)
Minimum spacing b/mm
Note. rated voltage of 35kV and the minimum pitch in the case of 66kV consultation with the user by the manufacturer, is determined by referring to the selected data.
a predetermined minimum spacing to take into account variations in the actual system voltage, can reach up to 20% of the rated voltage.
b need to consider the possible line sag and swing.
7 operate in the vicinity of the collector/the trolley wire
Requirements are under consideration.
GB 9089.5-2008/IEC 60621-5. 1987
Changes in the operation of 8
8.1 Protection of keeping
When operating changed, should be taken to ensure GB/T 9089.2-2008 protection requirements. Such changes may include extending the working field
(In power line or cable extension required), road construction, and so the device increases. Consider the case of including protective spacing, electrical installation, protective conductor
Cross section, overload and short circuit protection, under voltage, lightning strikes, intended contact voltage.
Reduced pitch 8.2
Special attention should be to ensure that material can not be stacked because the dump or to form a storage area of the topography or overhead line to the ground pitch Save
Small minimum allowable less.
8.3 in the vicinity of the electrical device mining operations
For mineral mining operations or any other purpose should not make any poles, towers, or other security holder base is affected, nor
Give the ground electrode or the ground conductor interfere.
8.4 improve the safety device and the safety circuit
Measures should be taken to ensure the safety circuits or safety devices without failure occurs, unless alternative security measures taken.
Moving the cable 9
9.1 movable distribution cable
In addition to the special design of the movable charging cable, all movable distribution cables should be off before moving. Movement of the cable according to manufacturer
A predetermined minimum temperature and commercially recommended minimum bend radius.
Before reconnecting cable distribution box, cable distribution boxes respond accordingly inspected and tested to ensure good electrical insulating properties and
Geopolitics.
9.2 trailing cable and cable winding
And winding using tow cables for mechanical movement of the cable, measures should be taken to prevent direct mechanical tension cable receiving terminal.
Mechanical trailing cable near recommended that the length of the cable at the left margin, and Z-shape or a figure eight spare place.
When all of the trailing cable and cable winding placement, damage should be rocks, stones, etc., causing minimized. Responsible for all towing cables and volumes
Around the cable regularly checked to ensure their free movement and relieve damage.
When the cable is wound and moves the trailing cable need to be separated from the cable distribution boxes, power should be isolated in order to operate. This requirement
Low voltage, low current cables, control cables, for example, is not applicable.
10 cable protection
Due to mechanical movement of the cable and the vehicle may cause significant damage should be placed in position or be appropriately protected. Protection may
use.
a) the use of ramps or cover;
b) bulk material with a suitable cover;
c) set up warning flags, signs or fences;
d) training provided embankment;
e) buried in a road designated the pipe;
f) an overhead cable bridge;
g) the cable supported above the ground.
11 move overhead lines
Before moving overhead line, respond to all of the conductors in accordance with the 5.3 power and isolated.
The event of lightning in the area where the overhead lines, the lines should stop all operations.
GB 9089.5-2008/IEC 60621-5. 1987
All operators should use seat belts above the ground and should operate under guardianship.
Measures should be taken to ensure that the discharge of all mast or tower structure of the firm, the conductor will not affect other segments.
Lines during removal and installation, all vehicles should be avoided through overhead lines or mechanical equipment, we have taken appropriate measures to protect
except.
Pole position must not endanger the persons concerned move.
All pole before re-erected, should be checked along the entire length of the pole, which comprises a supporting insulator and the wire.
Overhead line poles should be erected in the foundation of the firm.
Before re-erection, you should check to make sure the conductor is suitable for use again.
12 electro-explosive operations
When using electric detonators should be noted that any burst error preparedness detonated outside the power input or power due to the risk of misfire.
NOTE. Due to various reasons, the current flowing into the ground is often called stray currents. It may be the electro-explosive device detonated power. It recommended to reduce electro-explosive devices
Possible measures mistakenly detonated see Appendix A.
13 Fire
Is not currently required.
14 Additional requirements and precautions
14.1 Precautions during thunderstorms
Local direct lightning strike may occur in hazardous or induced voltage, power failure should not touch or access cables or overhead lines during thunderstorms.
14.2 Warning notices
Dangers that may arise should be set up early warning signs, and should be properly maintained.
14.3 movement of the shield
Moves to shield and housing should only be taken when absolutely necessary and appropriate protection. Measures should be taken after the operation is completed in a timely manner
The back shield and the housing.
14.4 Operation For long metal member
When the long metal member. (eg movable conveyor apparatus, the line system) in parallel with the trolley wire, since the induced voltage may be noted that production
Dangerous students.
Temporary operating device 15
Temporary facilities shall comply with GB/T 9089.2-2008 of general protection requirements.
GB 9089.5-2008/IEC 60621-5. 1987
Appendix A
(Informative)
Recommend measures to reduce electro-explosive device explosion may have missed
A. 1 General Precautions
Common measures to prevent electro-explosive device detonated early include.
a) using the applicable proof cable insulation.
b) Avoid cable joints in all possible places.
c) ensure that the cable joint is shifted in the vicinity of the cable core and mechanically fastened by using good insulation.
d) only when to detonate, it will detonate the detonating device is turned on cable. At other times, detonating cable short and with the earth
insulation.
e) frequency induction detonation meter and detonators. Such devices only high frequency (15000Hz) response from 50Hz to 60Hz
Impact.
A. 2 ~ A. Recommendation 9 includes additional measures that can be used to reduce the possibility of false detonated.
A. 2 IT system in a first operating condition of continued failure
Any nearby allow continued operation of the electrical device at the first fault condition, should not be stored or used electric igniter (see
GB/T 9089.2-2008 in 5.4.4)
A. Exposed conductive member 3 and the outer conductive member
It should not be used in the vicinity of the exposed electrically conductive member and the outer conductive member and the connection cable detonating devices, protective devices in order to avoid moving
During the work caused by the fault current to ground before detonating.
A. 4 overhead lines
You should not use electro-explosive device and its connecting cable in......
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