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GB 26861-2011: Safety code of electric power industry -- Part of high voltage laboratory
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Safety code of electric power industry -- Part of high voltage laboratory
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Basic data
Standard ID: GB 26861-2011 (GB26861-2011)
Description (Translated English): Safety code of electric power industry -- Part of high voltage laboratory
Sector / Industry: National Standard
Classification of Chinese Standard: K09
Classification of International Standard: 29.020
Word Count Estimation: 12,171
Date of Issue: 2011-07-29
Date of Implementation: 2012-06-01
Quoted Standard: GB 311.1; GB 2900.19; GB/T 16927.1
Regulation (derived from): Announcement of Newly Approved National Standards No. 12 of 2011
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 specifies the high voltage test chamber the basic safety requirements, regulatory measures, technical measures, procedures and test preparation safety requirements. This standard applies to high-voltage test chamber (including high pressure experimental hall, high voltage outdoor test site) and its staff. Also applies to the requirements of this standard form test area substations, power plants, high voltage test site.
GB 26861-2011: Safety code of electric power industry -- Part of high voltage laboratory
---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.
Safety code of electric power industry.Part of high voltage laboratory
ICS 29.020
K09
National Standards of People's Republic of China
Electrical safety work order high voltage test chamber portion
Issued on. 2011-07-29
2012-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
Introduction Ⅱ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 Basic Safety Requirements
5 safety measures 3
6 3 Safety Measures
7 high-voltage test began working intermittently and end 5
8 additional security measures 6
Foreword
All the technical contents of this standard is mandatory.
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Electricity Council.
This standard by the National Standardization Technical Committee of high voltage electrical safety (SAC/TC226) centralized.
This standard was drafted. State Grid Electric Power Research Institute.
Drafters of this standard. Yang Yingjian, Tsai Chung-ho plot, Zhang Xi.
Introduction
Based, retained the DL560 main content. The increase in the standard scope of application, "according to the standards required to form substation test area,
High voltage test power plant site "in the safety management absorbed nearly 10 years of experience, an increase in the technical content of" safe distance "for
It should test voltage levels.
DL560-1995 "electrical safety regulations" (high voltage test chamber portion) former Wuhan High Voltage Research Institute of Electric Power Industry Ministry to develop. the Lord
To drafters. Tsai Chung-ho plot, Zhu Tong Chun, Wang Wei Lin.
Electrical safety work order high voltage test chamber portion
1 Scope
This standard specifies the basic safety requirements for high-voltage laboratory, safety measures, technical measures, procedures and test in preparation
Claim.
This standard applies to the high-pressure test chamber (including high voltage test hall, high voltage outdoor test site) and his staff. This standard also applies to the press
Calls for a substation, power plants, high voltage test field test area.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB 311.1 insulation with high-voltage power transmission equipment
GB 2900.19 electrician term high voltage test and insulation technology cooperation
GB/T 16927.1 High-voltage test techniques - Part 1. General test requirements
3 Terms and Definitions
GB/T 2900.19 define the following terms and definitions apply to this document.
3.1
High voltage test chamber highvoltagelab
Using higher than 1000V power frequency, DC and impulse voltage for electrical equipment, insulation material (member), and other various electrical air gap
Laboratory tests of the characteristics (including high voltage test hall, high voltage outdoor test site).
3.2
Clearance clearance
Air distance between two live parts or live parts and ground (or ground object) between.
3.3
The minimum clearances minimumclearance
Air between live parts or live parts to a minimum clearance between the ground.
3.4
Work space/safe distance workingclearance
Live parts of the effective length between the security staff or the minimum safe distance from live action tools.
3.5
Test grounding groundintesting
The test equipment, measuring equipment and the test according to the test requirements cited by the ground wire to the laboratory dedicated ground piles (band).
3.6
Ground discharge dischargebygrounding
After the test will be the high voltage terminal and the ground terminal (or low side) after the test, the high voltage output terminal and the ground test equipment, using a dedicated
Short-circuit grounding rods, the charge is released to the ground, the equipment and the ground potential are equal.
3.7
Abnormal discharge abnormaldischarge
During operation impulse voltage test, impulse discharge does not occur in accordance with the relevant requirements of the arranged between the test gap, but hair
Born in the gap between the high-pressure side of the other grounding body composition, and the gap distance is greater than the test gap distance (or even much bigger).
4 Basic Safety Requirements
4.1 high-pressure test personnel
High voltage test should have a high-pressure test of professional knowledge, familiar with the test equipment and test, familiar with the standards and training after passing the examination
In order to work in high-pressure test. The new interns to participate in the high-pressure test, should have experience in high-pressure test personnel designated to participate in custody
High-pressure test to work, not work as leaders and guardians. Foreign personnel participating in the trial should be carried out on-site safety training and technology
Disclosure.
High voltage test personnel to these Rules shall be an examination every year.
In addition, high-pressure test should.
a) healthy and have no prejudice to the work of the high-pressure test conditions;
b) learn first aid law, in particular shock to learn to maneuver;
c) understand the general knowledge of fire, use fire-fighting laboratory facilities.
4.2 high voltage test chamber
4.2.1 Grounding System
High voltage laboratory (field) should have a good grounding system to ensure that the high-voltage test measurement accuracy and security of person. Grounding resistance should meet
Design specifications, usually less than 0.5Ω. It should be reliable metallic ground connected between the test equipment and the device under test ground
Connection. Laboratory (field) in all of the metal structure, fixed metal security shield cover (gate) and the grounding grid column should have a firm connection. Ground
Point should have visible signs.
In order to ensure that the grounding system is always in good condition, it should be measured every five years to connect the first grounding resistor, butt ground and ground will be
An inspection.
4.2.2 Experimental Area
High voltage test room shall be consistent with the safety cover bar enclosed test area GB/T 16927.1 proximity effect influence requirements, the test area should not heap
Put debris. Without compromising security, dedicated isolation test area may also be enclosed with (especially high-voltage outdoor test site for a big test
Area).
4.2.3 Environment
High voltage test chamber should be kept well lit, close the doors and windows, ventilation facilities; indoor should be left to meet the requirements, marking a clear channel. test
Laboratories around the proper fire exits, and ensure the smooth flow. The control room shall lay rubber insulation pad.
High voltage test room should be equipped with the appropriate safety equipment, anti-virus, anti-radiation, anti-scald-proof and protective equipment as well as fire safety facilities,
Equipped with emergency lighting power supply.
4.3 Other
Laboratory should be safe system of work, the main equipment shall prepare safety procedures, establish a complete technical file. Each test is too full
Cheng should be complete and detailed records. After using test equipment, due to the condition of the equipment description, the maintenance should be a complete record.
Explosive device may produce toxic substances or after discharge should be ready to fire, explosion, anti-virus measures. SF6 gas-insulated high voltage test
And the test equipment should be sealed well, the test site shall be required to be installed powerful ventilation apparatus and protective facilities.
Important instruments and electronic equipment shall be installed to prevent discharge protection device and counter-induced voltage, or take other security measures.
5 safety measures
5.1 System Construction and supervision
High voltage test chamber shall implement the security system of the present standards and laboratory developed. It should be combined with its own characteristics and the actual situation, the development of safety
Full specifications, equipment safety rules for the operation and testing of operating instructions and other systems.
Laboratory should establish a full-time or part-time security officer, responsible for overseeing the implementation of the inspection procedures and safety regulations, security system. in
Participated in the event of accident investigation and handling of personal or equipment accidents.
Important pilot project involving major test equipment, the test should be responsible for organizing the preparation of high voltage test program. Program should ensure Ming
Provably secure organizational and technical measures. The main elements of the program typically include test assignments, test time, test connection, use of equipment, people
List of members and division of labor, steps, safety measures and other security guardian. Test program execution after laboratory approved by the technical director.
Prepared by the test program should not serve as pilot programs approved by people.
Test solution is particularly important large-scale pilot projects should be approved by the competent authority.
5.2 Staffing and division of labor
When high-pressure test, the test should be made clear who is responsible for the test shall be at least two people, that is the person in charge of the test persons responsible for the safety of the test
The overall responsibility for security.
In the high-pressure test, the test person responsible for issuing operating instructions, test personnel shall be responsible for the test instruction test operation
For, should not be allowed to operate. When necessary, it should be clear to ensure the safety of specific measures, guardians and other security programs in high-pressure test.
High voltage test chamber shall be responsible for technical work in high-pressure test more than five years, and has more than engineers and title officer.
High voltage testing personnel responsible for the test should be engaged in high-voltage test for more than two years assistant engineer officer or above the title of skilled and
Served.
6 Safety Measures
6.1 Setting cover bar
Around the high voltage test test area should be set cover bar hanging the appropriate number on the cover bar "stop, high risk" nameplate. Nameplate marked
It should cover toward the outside bar.
When necessary, the safety cover bar door interlock device and test power should be leading the test area, leading to the test area when the cover bar door is opened, the power test
It should not be connected, and an alarm signal.
In the outdoor test site to test, in addition to setting up the necessary cover bar, safety warning signs and safety lights, shall send someone to monitor, prevent people
Who broke into the test area.
Shield should cover bar made of metal, reliable ground, the height of not less than 2m.
When the same test chamber at the same time different high-pressure test, and the test section shall be a safe distance from each column are separated by cover, and set
Obvious badges, leaving a secure channel.
According outdoor proving ground test necessary to set a fixed observation points meet the safety requirements.
6.2 Safety distance
According to GB/T 16927.1 requirements, AC or positive polarity operation impact test the maximum test voltage and the test for grounding the high voltage electrode
Intermediate or other conductor minimum gap distance curve shown in Figure 1. To ensure the safety of high-pressure test, the safe distance should be not less
1.5 times the minimum clearance distance.
1 AC or positive polarity operation impact test the maximum test voltage and test high voltage terminal diagram
Or other inter-grounding conductor minimum gap distance relationship
Distance test high-voltage and high-voltage live wire member to cover bar (including shield cover bar) should be greater than the values in Tables 1 and 2.
Table 1 AC and DC test safety distance
Test voltage
kV
safe distance
Test voltage
kV
safe distance
200 1.5 1000 7.2
50,031,500 13.2
750 4.5
Note 1. The test voltage 200kV safe distance below the requirements of not less than 1.5m.
Note 2. The test voltage is AC rms DC maximum.
Note 3. for not more than 1000m altitude region. Used for elevation above 1000m, according to GB 311.1 in altitude correction provisions be amended.
Table 2 Impact test (peak) Safety distance
Test voltage
kV
safe distance
Impulse lightning impulse
Test voltage
kV
safe distance
Impulse lightning impulse
5003320001614
1000 7.2 7.2 30,003,018
1500 13.2 12.5 4000--22
Note 1. The test voltage 500kV safe distance below the requirements of not less than 3m.
Note 2. for not more than 1000m altitude region. Used for elevation above 1000m, according to GB 311.1 in altitude correction provisions be amended.
6.3 Personal Protection
When the high voltage test, especially in impulse test voltage (peak value) is higher than 2000kV, due to the irregularity of the discharge path, it is possible
Abnormal discharge can occur, all personnel should stay to prevent abnormal discharge endanger the safety zone, such as the control room, the observation room or shield cover bar
outer. Cut off the power before the test, any person should not enter the test area.
High and low temperature, low pressure test, should be feasible precautions to prevent harm to the person; when large current tests, should prevent
Sample damage have burst personal injury protection measures.
6.4 grounding and ground discharge
6.4.1 Ground
Ground high-voltage test equipment and test ground or enclosure should be well grounded, grounding wire should adopt multi-strand bare copper wire or woven through the cover
Ming insulating layer of soft copper stranded or copper ground wire cross-section should be able to meet the test requirements, but not less than 4mm2. The power distribution apparatus
With the ground line, the section not less than 25mm2.
Connect the ground wire and grounding system should be bolted to the fixed ground piles (band), a ground wire length should be as short as possible, and significantly
visible. Ground wire must not be connected to the neutral point of water pipes, radiators and low voltage electrical circuit.
When high-pressure test, test equipment other equipment close to be short circuited and grounded.
Laboratory equipment idle capacitance should be shorted to ground.
6.4.2 ground discharge
6.4.2.1 grounding rods requirements
High-voltage test equipment and test discharge grounding rods should be used, the length of insulation required security job choice, but the minimum total length of not less
To 1000mm, wherein the insulating portion 700mm.
6.4.2.2 Operational requirements
When using grounding rods, hand grip portion shall not exceed the grommet. Grounding line and the distance should be greater than the body's grounding rod effective length of the insulation.
In front of the high-pressure test, after the discharge of high voltage test equipment and test sample should be first ground rod grounding wire securely connected to the ground pile
(Tape), then ground rod contact with high voltage test equipment and high-pressure end of the test, the grounding discharge.
Of DC test equipment and test and the DC test voltage of more than 100kV large capacitance of the test equipment and the ground discharge, should be
With ground rods with discharge resistors discharge, and then discharged directly shorted to ground.
Change wave impulse voltage generator head and the tail resistor or DC generator before changing polarity, and respond capacitor charging circuit progressively short circuit
Ground short circuit discharge or start grounding device.
After discharge grounding rods hanging in the high-pressure side, keeping the ground state, prior to the test once again removed.
6.4.2.3 Discharge time requirements
High-pressure test, high voltage test equipment and test grounding discharge from the ground rod contacting high voltage test equipment and test end-to-high voltage
Time trial staff can contact, generally not less than 3min. Large capacity discharge test of time, should be more than 5min.
7 high-voltage test work began, intermittent and end
7.1 preparation before start of the test
Before the start of the test, the test head of the test tasks detailed arrangement and security measures to all test personnel, and should check the following.
a) security measures are already complete;
b) test equipment, test and test wiring is correct;
c) Start condition meter magnification regulator zero and measurement systems;
d) high-voltage test equipment and test pressure side termination if the ground have been removed;
e) whether all personnel have been retracted from the test area, transferred to safe areas;
f) test area cover bar door is already closed.
Check all correct before starting the test boost.
7.2 Test boost
Ordered by the head of the test pressure, the operator should repeat "Ready Boost" and warning-ringing, and then operate the power switch on the power, press
Test requirements specified voltage boosting rate rises to a predetermined test voltage. Boost process should be supervised to sing and shout, and a personal supervisor
Depending on test equipment and test.
In boosting the process, if found abnormal situation should immediately stop the test, the voltage quickly drops to zero, disconnect the power.
Test inclement weather conditions, should assess the impact on personnel and equipment when necessary, that the test was stopped.
7.3 Test interrupted and ends
Will test voltage to zero, disconnect the power, the power switch handle to hang "DO NOT TURN, some work" post warning signs, test personnel
Into the test area, according to the requirements of the standard 6.4.2 high voltage test equipment and test grounding discharge. In this case, high voltage test can be considered as one
End or test interruption. Test personnel should be replaced in the test sample intermittent or end state, change the wiring inspection test abnormalities or reason.
When the test again or restore, should re-examine the wiring and test security measures.
Before the test persons from the laboratory, should cut off the associated power. For the power to continue to use, should be suspended from the power switch "Some work,
May not wind up "warning signs.
8 additional security measures
8.1 lifting and handling test
In addition to lifting the test should strictly enforce the rules and requirements of lifting, lifting and handling during the test shall be done.
a) lifting, handling large sample or precision test equipment shall be pre-established safety technical measures, by the person responsible for directing, participate in the work of
Lifting program should be familiar with handling and safety measures. Lifting site worker should wear a helmet.
b) before lifting begins, check the tools, equipment and rope quality is good, it does not meet the requirements strictly prohibited.
c) The sample shall be fastened lifting, lifting points should be suspended vertically above items. Lifting weights a little off the ground/support, ......
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