Path:
Home >
GB >
Page57 > GB 30439.7-2014
Home >
Standard_List >
GB >
Page57 > GB 30439.7-2014
US$1199.00 · In stock
Delivery: <= 8 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB 30439.7-2014: Safety requirements for industrial automation products -- Part 7: Safety requirements for loop regulator
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 30439.7-2014 | English | 1199 |
Add to Cart
|
8 days [Need to translate]
|
Safety requirements for industrial automation products -- Part 7: Safety requirements for loop regulator
| Valid |
GB 30439.7-2014
|
PDF similar to GB 30439.7-2014
Basic data
| Standard ID | GB 30439.7-2014 (GB30439.7-2014) |
| Description (Translated English) | Safety requirements for industrial automation products -- Part 7: Safety requirements for loop regulator |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | N10 |
| Classification of International Standard | 19.080; 25.040.01 |
| Word Count Estimation | 54,515 |
| Date of Issue | 7/24/2014 |
| Date of Implementation | 2/1/2015 |
| Quoted Standard | GB/T 1633-2000; GB/T 3098.1-2010; GB/T 3098.3-2010; GB/T 4207-2003; GB 4208-2008; GB 4793.1-2007; GB/T 5465.2-2008; GB/T 7354-2003; GB 8898-2001; GB 9364.1-1997; GB 9364.2-1997; GB 9364.3-1997; GB 9364.4-2006; GB 14048.1-2006; GB 14048.3-2008; GB/T 11020- |
| Regulation (derived from) | National Standards Bulletin No. 19, 2014 |
| 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 standard specifies the industrial automation products loop controller shockproof and electrical burns, anti-mechanical hazards, anti-flame spread outward from the inner loop controller, against excessive heat, the safety impact of anti-fluid and flui |
GB 30439.7-2014: Safety requirements for industrial automation products -- Part 7: Safety requirements for loop regulator
---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 requirements for industrial automation products.Part 7. Safety requirements for loop regulator
ICS 19.080; 25.040.01
N10
National Standards of People's Republic of China
Safety requirements for industrial automation products
Part 7. loop controller safety requirements
Part 7. Safetyrequirementsforloopregulator
Issued on. 2014-07-24
2015-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅴ
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
4 Test 5
4.1 Overview 5
4.2 Test procedure 6
4.3 reference test conditions 6
Test under a single fault condition 4.4 7
5 Marking and documentation 9
5.1 mark 9
5.2 11 warning signs
5.3 durability of the marking 11
5.4 Document 12
6 anti-shock 13
6.1 Overview 13
6.2 ACCESSIBLE parts of the judgment 13
6.3 ACCESSIBLE parts of allowable limits 13
Protection 6.4 normal conditions 15
Protection under a single fault condition 16 6.5
6.6 connection with an external circuit 18
6.7 clearances and creepage distances 19
6.8 Dielectric strength test program 20
6.9 protection against electric shock structural requirements 23
Disconnect the power supply 23 6.10
7 against mechanical hazard 24
7.1 Overview 24
7.2 Wall Mounting 25
8 resistant to mechanical shock and impact 25
8.1 Overview 25
8.2 housing rigid test 25
9 to prevent the spread of flame 26
9.1 Overview 26
9.2 to eliminate or reduce ignition sources inside the loop controller 27
9.3 in the event of fire, the flame will be controlled within the loop controller 27
9.4 energy-limited circuit 29
9.5 overcurrent protection 30
10 loop controller temperature limits and heat 30
10.1 pairs of anti-burn surface temperature limit 30
10.2 winding temperature of 31
10.3 Other temperature measurements 31
Implementation 10.4 Temperature Test 31
10.5 Heat 31
11 Anti-dangerous fluid 32
11.1 Overview 32
33 11.2 Battery Electrolyte
12 radiation (including laser source), acoustic and ultrasonic pressure 33
13 pairs of gas release, explosion and implosion protection 33
Rechargeable batteries and batteries 33 13.1
33 14 Component
14.1 Overview 33
14.2 high integrity components 34
14.3 Printed Circuit Board 34
14.4 used as transient overvoltage limiting device circuits and components 34
34 14.5 Power Transformers
35 14.6 Fuse Holders
Appendix A (normative) touch current measurement circuit 36
Appendix B (normative) Standard test finger 39
Annex C (normative) clearances and creepage distances measuring 41
Annex D (normative) therebetween insulation requirements specified parts 44
Appendix E (normative) to reduce pollution levels 47
Annex F (normative) Routine tests 48
Figure 1 under single fault conditions instantaneously accessible short-time maximum duration of voltage [see 6.3.2a)] 14
Figure 2 charging normal conditions and single fault conditions limit the capacity 15
3 Use the ball impact test Figure 26
Figure 4 illustrates a flowchart prevent flame spread requirements 27
Figure 5 Bezel 28
Regional structure of FIG. 6 to comply 9.3.2b) 1) the provisions of the housing bottom 29
7 Ball pressure test apparatus 32
Figure A.1 frequency is less than or equal to 1MHz AC and DC measurement circuit 36
Figure A.2 frequency is less than or equal to 100Hz sinusoidal AC and DC measurement circuit 37
Figure A.3 electrical burns current measurement circuit 37
Figure A.4 moist touch current measurement circuit 38
Figure B.1 rigid test finger (GB/T 16842-2008 trial with 11) 39
Figure B.2 articulated test finger (GB/T 16842-2008 trial with B) 40
Figure C.1 clearances and creepage distance measurement method of example 41
Figure D.1a) ~ d) hazardous live circuits under normal conditions do not exceed the limits 6.3.2 ACCESSIBLE parts and having an external terminal
Protection circuit between 44
Other circuit diagram D.1e) ~ h) hazardous live circuits under normal conditions does not exceed the limit and having external terminals 6.3.2 between
45 Protection
Figure D.2a) and b) are not accessible to other parts connected to accessible parts hazardous live internal protection circuit 45
Figure D.2c) and under d) does not exceed the normal conditions 6.3.2 limit the secondary circuit can be touched hazardous live terminals of the primary circuit
45 Protection
Figure D.3 two external accessible hazardous live circuit terminal 46 protection
Table 1 Symbol 10
Table 2 assembly screws tightening torque 17
Table 3 MAINS circuit clearances and creepage distances 20
Table 4 by the clearances grid power supply circuit 21
Table 5 basic insulation test voltage 22
Table 6 allows the housing bottom opening 28
Table 7 limits the maximum available current value 29
Table 8 overcurrent protective device 30
Table 9 Surface temperature limit of 30 normal conditions
Table 10 winding temperature insulating material 31
Table 11 impulse withstand voltage 34
Table 12 output impedance of the pulse generator 34
Table C.1 Pollution Registration Form 41
Table E.1 through the use of additional protection allows to reduce environmental pollution level inside 47
Foreword
All technical content in this Part of GB 30439 is mandatory.
GB 30439 "Industrial Automation product safety requirements" is divided into 18 sections as follows.
--- Part 1. General;
--- Part 2. pressure/differential pressure transmitter safety requirements;
--- Part 3. Temperature Transmitter safety requirements;
--- Part 4. Safety requirements for the control valve;
--- Part 5. flowmeter safety requirements;
--- Part 6. solenoid valve safety requirements;
--- Part 7. loop controller safety requirements;
--- Part 8. Safety requirements for electric actuators;
--- Part 9. Digital display instrument safety requirements;
--- Part 10. recording instrument safety requirements;
--- Part 11. Programmable Controller safety requirements;
--- Part 12. Radar level meter and ultrasonic level meter safety requirements;
--- Part 13. magnetostrictive level gauge safety requirements;
--- Part 14. Power meter safety requirements;
--- Part 15. industrial process measurement and control signal distribution, isolation, conversion, alarm processing unit safety requirements;
--- Part 16. Safety requirements for differential pressure flow meter;
--- Part 17. ultrasonic flow meter safety requirements;
--- Part 18. Safety requirements for pressure gauge auxiliary device.
This is Part 7 GB 30439's.
This section according to GB/T 1.1-2009 given rules drafted
This part is proposed by China Machinery Industry Federation.
This part of the National Industrial Process Measurement and Control Standardization Technical Committee (SAC/TC124), the national measurement, control and laboratory electric
Device Security Standardization Technical Committee (SAC/TC338) centralized.
This section is drafted. Fujian on the Run Precision Instrument Co., Ltd., Beijing Jin Shi Instrument Technology Co., Ltd., Hangzhou Pangu Automation
EC Co., Southwest University, Chongqing Yutong System Software Co., Ltd. Nanjing gifted times Electric Co., Ltd., Beijing Far East Instrument Co., Ltd.,
Fuzhou Baxter Automation Equipment Co., Ltd., Zhongshan City, East Kawasaki Electric Co., Ltd., Fujian, Macao and Thailand Automation Equipment Co., Ltd., Fujian Shun
Chang Hong Run Precision Instrument Co., Ltd., Xiamen-Automation Technology Co., Ltd., Zhejiang Lunte Electrical Co., Ltd. Anton Xiamen Electronics Co.,
The company, Anhui Rand Group Co., Ltd., Beijing Science and Technology Instrument Co. Shing new dimension.
The main drafters of this section. Zou Chong, Ge Jian, Gong long Yong, Guo hero, Liu Feng, Huang Wei, Zhao Yixin, Yue Zhou, Feng Wei, Dong Jian, Wang Yue,
Qi Jianfeng, Zhou Songming, Ni Hui Bian Jian Bin, Zhou Yu, Cao Ping Yang, Wu Galen, Xiao country specifically, Yin Shing House, Cheung Po Chun.
Safety requirements for industrial automation products
Part 7. loop controller safety requirements
1 Scope
GB This section 30439 provides for industrial automation products loop controller shockproof and electrical burns, anti-mechanical hazards, anti-flame
Spread outward from the inner loop controller, against excessive heat, fluid-fluid pressure and the impact of the explosion and implosion of security content.
This section does not include security features and device-independent, performance or other characteristics, the effectiveness of transport packaging, electromagnetic compatibility (EMC) to
Requirements, functional safety, environmental protection measures for the explosion, maintenance (repair), maintenance (repair) personnel protection. This Part shall not apply to products
In corrosive environments.
If you want to loop regulator products used in other environments (such as buildings, medical, etc.), the loop controller products must also meet applicable
Particular requirements for appropriate environmental standards and installation guidelines.
This section applies to industrial processes, the signal into an electrical signal, for indoor use, the power supply voltage of 300V or less and the controlled output signal
No adjustment of the instrument.
This section does not apply to one sensor input signal to physical devices (such as. bimetallic temperature controller).
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/T 1633-2000 thermoplastics Vicat softening temperature (VST) Determination (idtISO 306.1994)
GB/T 3098.1-2010 Mechanical properties of fasteners Bolts, screws and studs (ISO 898-1.2009, MOD)
GB/T 3098.3-2000 Mechanical properties of fasteners set screws (idtISO 898-5.1998)
GB/T 4207-2003 solid insulating materials under moist conditions index tracking of the measuring method and the proof tracking index compared
(IEC 60112. 1979, IDT)
GB 4208-2008 housing protection (IP Code) (IEC 60529.2001, IDT)
GB 4793.1-2007 measurement, control and laboratory safety requirements for electrical equipment Part 1. General requirements (IEC 61010-1.
2001, IDT)
GB/T 5465.2-2008 Graphical symbols for electrical equipment - Part 2. Graphical symbols (IEC 60417DB.2007, IDT)
GB/T 7354-2003 partial discharge measurements (IEC 60270.2000, IDT)
GB 8898-2001 Audio, video and similar electronic apparatus - Safety requirements (eqvIEC 60065.1998)
GB 9364.1-1997 Miniature fuses Part 1. Definitions and miniature fuses and general requirements for miniature fuse-links (idtIEC
60127-1. 1988)
GB 9364.2-1997 Miniature fuses - Part 2. Cartridge fuse-links (idtIEC 60127-2. 1989)
GB 9364.3-1997 Miniature fuses Part 3. Ultra-miniature fuse-links (idtIEC 60127-3. 1988)
GB 9364.4-2006 Miniature fuses - Part 4. Universal modular fuse-links (IEC 60127-4.1996, IDT)
GB 14048.1-2006 Low-voltage switchgear and control equipment Part 1. General (IEC 60947-1.2001, MOD)
GB 14048.3-2008 Low-voltage switchgear and control equipment - Part 3. Switches, disconnectors, switch and fuse combination
Appliances (IEC 60947-3.2005, IDT)
Test Method Listing GB/T 11020-2005 solid non-metallic materials when exposed to flame sources of combustion (IEC 60707.1999, IDT)
GB/T 11021-2007 heat resistance, electrical insulation rating (IEC 60085.2004, IDT)
GB/T 12113-2003 touch current and protective conductor current measurement method (IEC 60990.1999, IDT)
GB/T 16273.1-2008 equipment - Graphical symbols - Part 1. Common symbols (ISO 7000.2004, NEQ)
GB/T 16842-2008 protective shell for inspection and test equipment used with (IEC 61032.1997, IDT)
GB/T 16927 (all parts) high-voltage test techniques [IEC 60060 (all parts)]
GB/T 16935.3-2005 within low-voltage systems Insulation coordination for equipment - Part 3. Using the coating, potting or molding for antifouling
Protection (IEC 60664-3.2003, IDT)
IEC 60027-3.2002 Letter symbols used in electrical technology - Part 3. Logarithmic and related quantities, and their units (Lettersymbolsto
beusedinelectricaltechnology-Part 3. logarithmicandrelatedquantities, andtheirunits)
3 Terms and Definitions
GB 4793.1 define the following terms and definitions apply to this document. For ease of use, repeat the following list of GB 4793.1
Some terms and definitions.
Unless otherwise specified, "voltage" value and "current" refers to the value of RMS AC, DC, or synthetic voltage or current.
Category 3.1 equipment and devices
3.1.1
Stationary equipment fixedequipment
Fixed to the support member or an additional fixture at a specific location.
[GB 4793.1-2007, the definition 3.1.1]
3.1.2
PERMANENTLY CONNECTED EQUIPMENT permanentlyconnectedequipment
Only permanent connection method and tools to disconnect the electrical power supply connected equipment.
3.2 Parts and Accessories
3.2.1
Terminal terminal
A component of the apparatus (device) connected to the outer conductor provided. [IEV151-01-03, revised edition]
Note. The terminal can contain one or more contacts, so that the term also includes sockets, connectors and the like.
3.2.2
Functional ground terminal functionalearthterminal
To a point directly measuring or control circuit, or directly with a shield portion is electrically connected, but also reservations
To be used for any function other than safety purposes purpose a ground terminal.
Note. The measuring equipment, the terminal is often referred to as measuring ground terminal.
3.2.3
Protective Conductor Terminal protectiveconductorterminal
For security purposes and conductive parts of equipment are connected, but also with a predetermined external terminal connected to protective earthing system.
3.2.4
Housing enclosure
Protect the unit against certain external influences and prevent parts from any direct contact with the direction provided.
[GB 4793.1-2007, the definition 3.2.4]
3.2.5
Baffle barrier
Prevent parts from any direction normal close direct contact provided.
Note. The housing and bezel provides flame spread protection [see 9.2.1b)].
[GB 4793.1-2007, the definition 3.2.5]
3.3 Electrical values
3.3.1
Rated (value) rated (value)
Usually by the manufacturer for the components, apparatus, or device reaches a given magnitude of working status.
[GB 4793.1-2007, the definition 3.3.1]
3.3.2
Rating rating
A set of ratings and working conditions.
[GB 4793.1-2007, the definition 3.3.2]
3.3.3
Operating voltage workingvoltage
When the device is supplied at rated voltage, the insulation can occur any particular maximum RMS AC voltage or DC voltage values.
Note 1. The instantaneous value is not considered.
Note 2. The open circuit conditions and normal operating conditions are to be considered.
3.4 Test
3.4.1
Type test typetest
For a particular design, in order to prove that the design and structure of this standard can meet one or more of the requirements of one or more devices
Taiwan sample (or device components) tests carried out.
[GB 4793.1-2007, the definition 3.4.1]
Note. This is IEV151-04-15 definition expanded to include both the design requirements and structural requirements.
3.4.2
Routine tests routinetest
After fabrication or manufacture to determine the means (equipment) meets a criterion and for each separate device (device) test
(See Appendix F).
[GB 4793.1-2007, the definition 3.4.2]
3.5 Security Terminology
3.5.1
(Parts) palpable accessible (ofapart)
6.2 When prescribed use standard test finger or test pin to the touch.
3.5.2
Dangerous hazard
Potential source of harm.
3.5.3
Hazardous live hazardouslive
Electric shock or electrical burn make it under normal condition or single fault condition.
Note. The value of the normal conditions apply, see 6.3.1, for under a single fault condition is considered to be a higher number apply, see 6.3.2.
3.5.4
Power supply mains
It is designed to make about the device connected thereto need for equipment to provide electricity for the purpose of low voltage power supply system.
Note. Some of the measurement circuit can measure the power grid and for purposes connected with.
3.5.5
The power supply circuit mainscircuit
Intended to be connected to the power grid, providing power for the device circuitry.
Note. The measuring circuit and the use of induction powered from the mains power supply circuit circuit does not belong to the grid power supply circuit.
3.5.6
Protective impedance protectiveimpedance
A combination of components, component or components of the basic insulation and current limiting or pressure-limiting device when it is connected to ACCESSIBLE conductive parts and the danger zone
When between the electrical components, the degree of protection impedance, structure and reliability under normal conditions and single fault conditions provided the requirements of this standard.
3.5.7
Protection connection protectivebonding
To make electrical ACCESSIBLE conductive parts or protective screen and for the external protection conductor is connected with the electrical continuity of having carried out the connection.
3.5.8
Normal use normaluse
Operation according to instructions or intended use by the apparent instructions, including standby.
NOTE. In most cases, the normal use also refers to normal conditions, because the use of manual warns users not to use the device under abnormal conditions.
3.5.9
Normal conditions normalcondition
All protective measures to prevent dangerous conditions are intact.
3.5.10
Single fault condition singlefaultcondition
Protective measures to prevent the risk of a failure condition occurs or is likely to cause some dangerous and a fault condition.
Note. If a single fault condition will inevitably lead to another single fault conditions, such a two failures are considered a single fault condition.
3.5.11
Operator operator
According to the intended use of the device to operate the equipment man.
Note. Operators should for this purpose receive appropriate training.
3.5.12
Responsible responsiblebody
Responsible for the maintenance and use of equipment or operating personnel to ensure adequate training for individuals or organizations.
3.5.13
Transient overvoltage transientovervoltage
Duration of only a few milliseconds or less over-voltage, usually with a strong damping of oscillations or shocks.
3.5.14
Transient Overvoltage temporaryovervoltage
For a relatively long time power frequency overvoltage.
3.6 Insulation
3.6.1
Basic insulation basicinsulation
Whose failure can cause a shock hazard insulation.
Note. The basic function of insulation can be used for insulation purposes.
[GB 4793.1-2007, the definition 3.6.1]
3.6.2
Additional insulation supplementaryinsulation
Independent insulation applied in addition to basic insulation, in order to ensure that when once the basic insulation failure can still prevent electric shock.
[GB 4793.1-2007, the definition 3.6.2]
3.6.3
Double insulation doubleinsulation
Constituted by the basic insulation and supplementary insulation.
[GB 4793.1-2007, the definition 3.6.3]
3.6.4
Reinforced insulation reinforcedinsulation
Its ability to provide protection against electric shock is not less than double insulation insulation, it can not as a separate image into several layers of additional insulation or basic insulation
Insulation test line configuration.
[GB 4793.1-2007, the definition 3.6.4]
3.6.5
Pollution polution
It will lead dielectric strength or surface resistivity reduced solid, liquid or gaseous (ionized gas) additional foreign substances.
3.6.6
Pollution degree polutiondegree
To assess the level of contamination and the separation distance specified below microenvironment.
3.6.6.1
Pollution Level 1 polutiondegree1
No pollution or only dry non-conductive pollution, the pollution has no adverse effect.
3.6.6.2
Pollution Level 2 polutiondegree2
Normally only non-conductive pollution, but occasionally due to the cohesive effect and short conductive.
3.6.6.3
Pollution Level 3 polutiondegree3
Conductive pollution or dry non-conductive pollution due to the unifying role and become conductive.
Note. In this condition, the device is usually to prevent exposure to direct sunlight, rain, strong wind pressure, but it need not control the temperature or humidity.
3.6.7
Clearance clearance
The shortest distance between two conductive parts in the air.
3.6.8
Creepage distance creepagedistance
The shortest distance between two conductive parts along the surface of insulating material.
[GB 4793.1-2007, the definition 3.6.8]
Product-related definitions
3.6.9
Loop controller loopregulater
With a microprocessor circuit adjustment function, the input signal is compared with the set value, the output operation after an electric signal (current,
Pressure or frequency), so that the controlled object to achieve the desired requirements of the equipment.
4 Test
4.1 Overview
In this section all tests are type tests on the sample loop controller or components carried out. The only purpose of these tests
It is to verify that the design and construction to ensure compliance.
4.2 Test procedure
Subject to the provisions of this section, the test sequence may be optionally substituted. After each test should be careful to check the test loop controller.
If there is doubt about the results of the test, if the test suspect reverse the order, any of the foregoing really pass the test, the front of these
Test should be repeated. If the test will damage the regulator circuit under fault conditions, then these tests can be placed under the reference test conditions
After the test.
4.3 reference test conditions
4.3.1 Environmental Conditions
Subject to the provisions of this section, the test sites should have the following conditions.
a) Temperature. 15 ℃ ~ 35 ℃;
b) Relative humidity. not exceed 75%;
c) Atmospheric pressure. 75kPa ~ 106kPa;
d) no frost, condensation, water seepage, rain and sunshine.
4.3.2 loop controller status
Unless otherwise specified, each test should be assembled for the normal use of the loop controller, and in the provisions of 4.3.2.1 ~ 4.3.2.8
Carried out under the most unfavorable combination of conditions.
Loop controller should be installed according to the provisions of the manufacturer specification.
4.3.2.1 loop controller position
Loop controller is in any position of normal use, and any ventilation unobstructed.
4.3.2.2 Accessories
Recommended by the manufacturer or supplied, accessories and operator and the loop controller for use with interchangeable parts should be connected or
Not connected.
4.3.2.3 lid and removable parts
Without tools or removal of the lid parts should be removed or not removed.
4.3.2.4 MAINS
Shall comply with the following requirements.
a) between 90% to 110% of the power supply should loop controller can be set to any of the rated supply voltage, or if back
Road regulator to adapt to the provisions of a greater voltage fluctuations, the supply voltage should be any voltage fluctuations within the range of up to;
b) frequency should any nominal frequency;
c) AC, DC loop controller should be connected to an AC or DC power;
d) the use of DC or single-phase power regulator circuit, respectively, should be normal polarity and an opposite polarity;
e) In addition to the provisions of the loop controller is used only for non-grounded power grid, the reference test of a power pole should be at ground potential
Or close to the ground.
4.3.2.5 Input and output voltage
Input and output voltages, including floating voltages but excluding the MAINS voltage included, it should be adjusted to any of the rated voltage range
He voltage.
4.3.2.6 ground terminal
For protective earthing terminal, if any, it should be connected to earth. Functional ground terminal should be grounded or ungrounded.
4.3.2.7 connection
Loop controller according to their intended use shall be connected or not.
4.3.2.8 Output
For providing an electrical output of the loop controller.
a) loop controller working condition should be able to provide the rated output power of the rated load;
b) to any output, rated load impedance should be connected or not.
4.4 Test under single fault conditions
4.4.1 Overview
It should be according to the following requirements.
a) Check the loop controller and can usually determine whether the circuit diagram may be dangerous and therefore should be implemented if faults
condition;
b) In addition to proof of a specific fault conditions likely to cause danger outside. Shall be the test failure, or select Check
Compliance test prescribed alternative method instead of test failu...
Tips & Frequently Asked Questions:
Question 1: How long will the true-PDF of GB 30439.7-2014_English be delivered?
Answer: Upon your order, we will start to translate GB 30439.7-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 5 ~ 8 working days. The lengthier the document the longer the lead time.
Question 2: Can I share the purchased PDF of GB 30439.7-2014_English with my colleagues?
Answer: Yes. The purchased PDF of GB 30439.7-2014_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.
Question 3: Does the price include tax/VAT?
Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs):
List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?
Answer: Yes. If you need your currency to be printed on the invoice, please write an email to
[email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.