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GB 3836.19-2010: Explosive atmospheres -- Part 19: Fieldbus intrinsically safe concept (FISCO)
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Explosive atmospheres -- Part 19: Fieldbus intrinsically safe concept (FISCO)
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Basic data | Standard ID | GB 3836.19-2010 (GB3836.19-2010) | | Description (Translated English) | Explosive atmospheres -- Part 19: Fieldbus intrinsically safe concept (FISCO) | | Sector / Industry | National Standard | | Classification of Chinese Standard | K35 | | Classification of International Standard | 29.260.20 | | Word Count Estimation | 11,147 | | Date of Issue | 2010-08-09 | | Date of Implementation | 2011-08-01 | | Quoted Standard | GB/T 2900.35; GB 3836.1; GB 3836.4; GB 3836.8; GB 3836.15; GB 3836.18; GB/T 16657.2; IEC 60079-14-2007 | | Adopted Standard | IEC 60079-27-2008, IDT | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 3, 2010 (No. 158 overall) | | 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 use of Fieldbus Intrinsically Safe Concept (FISCO) equipment, systems and installation procedures for details. For this standard of the concept of using Manchester coding, compliance GB/T16657. 2 installed fieldbus physical layer standard design of the bus power supply system. | GB 3836.19-2010: Explosive atmospheres -- Part 19: Fieldbus intrinsically safe concept (FISCO)---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.
Explosive atmospheres.Part 19. Fieldbus intrinsically safe concept (FISCO)
ICS 29.260.20
K35
National Standards of People's Republic of China
Explosive atmospheres
Part 19. Fieldbus intrinsically safe
Concept (FISCO)
Part 19. Fieldbusintrinsicalysafeconcept (FISCO)
(IEC 60079-27.2008, IDT)
Published 2010-08-09
2011-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative References 1
3 terms, definitions and abbreviations 2
Device of claims 2 4
5 System requirements 5
Appendix A (informative) Typical system 7
Foreword
All technical contents of this section is mandatory.
GB 3836 "explosive atmosphere" is divided into several parts.
--- Part 1. General requirements for equipment;
--- Part 2. a flameproof enclosure "d" protection device;
--- Part 3. the increased safety "e" protection device;
--- Part 4. Protection by a device intrinsically safe "i";
--- Part 5. shell-type pressurized "p";
--- Part 6. Oil type "o";
--- Part 7. Powder filling "q";
--- Part of 8. "n" electrical equipment;
--- Part 9. Encapsulation "m";
--- Part 11. Determination of the maximum experimental safe gap;
--- Part 12. a mixture of gases or vapors according to their maximum experimental safe gaps and minimum ignition current rating;
--- Part 13. Electrical Apparatus for Explosive Gas Atmospheres maintenance;
Section --- 14. Classification of hazardous areas;
--- Part 15. Electrical installation hazardous areas (other than mines);
--- Part 16. Inspection and maintenance of the electrical device (other than mines);
--- part 17. Construction and use of positive pressure rooms or buildings;
--- part 18. intrinsically safe system;
--- Part 19. Field bus Intrinsically Safe Concept (FISCO);
--- Part 20. Equipment Protection Level (EPL) is Ga-level device.
This section GB Part 193 836 series, identical with IEC 60079-27.2008 "Explosive atmospheres - Part 27. Field
Bus Intrinsically Safe Concept (FISCO) "(in English).
This part of the IEC 60079-27.2008 compared to the main changes. The claim "ic" FISCO level of system replaced FNICO
Claim.
This section was proposed by China Electrical Equipment Industrial Association.
This part of the jurisdiction of the National Standardization Technical Committee explosion-proof electrical equipment (SAC/TC9).
This part was drafted. automatic Nanyang Explosion Electric Institute, the national explosion-proof electrical products for Quality Supervision and Inspection Center, Shanghai Industrial
Instrumentation Institute, Zhengzhou Yongbang Electric Co., Ltd., Fushun Branch of Coal Science Research Institute, Huarong Group Co., Ltd., Jiyuan City, Henan Province
Mine Electric Co., Ltd., Gulf Security Technology Co., Ltd.
This part of the main drafters. Zhang Gang, Xu Jianping, Fu Shuling, Zhou Jing, Liu Heng Yun, Zhang forward, Zhang Junying.
Explosive atmospheres
Part 19. Fieldbus intrinsically safe
Concept (FISCO)
1 Scope
GB 3836 specifies the portion of the present device using a field bus concept of intrinsic safety (the FISCO), the system and installation procedures detailed
Fine content. This part of the total for the concept of using Manchester coding, in accordance with GB/T 16657.2 fieldbus physical layer standard design mounted
Line power supply system.
FISCO apparatus and systems configuration and installation requirements, GB 3836.18 determined by GB 3836.4, GB 3836.15, this modified section
Except content. Fieldbus device may be any suitable part of GB 3836.1 listed protection method to protect a predetermined area, in
In this case, the requirements of this section applies only to devices of the present safety dedicated bus line or directly connected.
Note 1. FISCO certification requirements for the device does not prevent conventional authentication and sign in accordance with GB 3836.4, such that they may be used in other systems.
Before this technology has made provisions issued certification without having to meet the electrical parameters of the equipment specified in this technology, can be labeled "suitable for FISCO system
System. "If the electrical parameters Uo, Io, Po and Ui, Ii, Pi is compatible with the results of the comparison show that the rest of the system, and the present technical requirements all
He also comply with the requirements, the device can be used for FISCO systems.
Note 2. Typical FISCO system in Appendix A.
Note 3. In general, "ic" FISCO system for Zone 2 areas. FISCO system is mainly used in Zone 1 and Zone 2 locations, if the file has special provisions, it can also be used
0 area.
Note 4. IEC 60079-27.2005 standard introduces FNICO concept relates to energy-limited region 2 with [nL] Fieldbus Concept Concept. This standard with "ic"
The concept replaces the limited energy concept, but allowed to continue to use FNICO and nL equipment.
2 Normative references
Terms of the following documents constitute provisions of this section by reference in this section 3836 of the GB . 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 2900.35 term explosive atmospheres Electrotechnical equipment (GB/T 2900.35-2008, IDTIEC 60050 (426).
2008)
GB 3836.1 explosive atmospheres - Part 1. General Requirements apparatus (GB 3836.1-2010, IEC 60079-0.2007,
MOD)
GB 3836.4 explosive atmospheres - Part 4. a device intrinsically safe "i" protected (GB 3836.4-2010, IEC 60079-
11.2006, MOD)
GB 3836.8 Electrical Apparatus for Explosive Gas Atmospheres Part 8. "n" electrical equipment (GB 3836.8-2003,
IEC 60079-15.2001, MOD)
3836.15 explosive gas atmospheres electrical equipment - Part 15 GB . electrical installation hazardous areas (other than mines) (GB 3836.15-
2000, eqvIEC 60079-14.1996)
GB 3836.18 Explosive atmospheres - Part 18. Intrinsic safety system (GB 3836.18-2010, IEC 60079-25.2005,
IDT)
GB/T 16657.2 industrial communication networks Fieldbus specifications - Part 2. Physical layer specification and service definition
(GB/T 16657.2-2008, IEC 61158-2.2007, IDT)
IEC 60079-14.2007 Explosive atmospheres Part 14. electrical device design, selection, and installation
3 terms, definitions and abbreviations
3.1
Terms and Definitions
GB 3836.1, GB 3836.4, GB 3836.8 and the terms and definitions The following definitions apply in this section.
Note. Other definitions applicable to explosive atmospheres can be found GB/T 2900.35.
3.2
Abbreviations
FISCO Fieldbus Intrinsically Safe Concept
FNICO fieldbus concept does not ignite
4 Equipment Requirements
4.1 General
Device configuration should meet GB 3836.4, except for those portions of the modified content.
File equipment should be confirmed to ensure each device is suitable for FISCO systems comply with this section.
4.2 FISCO power supply
4.2.1 General
Power limiting resistor should have an output characteristic or characteristics trapezoidal or rectangular, corresponding to GB predetermined protection 3836.4
Under level, the maximum output voltage Uo should not exceed 17.5V or less than 14V.
The maximum unprotected internal inductance Li and the capacitor Ci are to be no greater than 5nF and 10μH.
Power output may be grounded.
Signs on the certificate or internal parameters do not require detailed description Li, Ci, or the maximum external parameters Lo, Co.
Determining the power supply output parameters, consideration should be given to the field device on the cable terminal field might open, short circuit and ground.
4.2.2 "ia" and "ib" additional power supply requirements Level FISCO
For any "ia" and "ib" maximum output current Io of the power supply level FISCO GB 3836.4 shall be determined, but should not exceed
Over 380mA. For a rectangular characteristics of the power, can be assessed using Table 1.
Evaluation Table 1 "ia" and "ib" level FISCO rectangle with the maximum output current of the power supply
Uo
Allowing current to class IIC
(Including a safety factor of 1.5)
mA
Allowing current to class IIB
(Including a safety factor of 1.5)
mA
17.5 75213
Note. two maximum current value derived from the class IIB 5.32W.
Po maximum output power should not exceed 5.32W.
Additional requirements 4.2.3 "ic" FISCO power supply level
For "ic" FISCO power supply level of the maximum output current Io GB 3836.4 shall be determined. For the "ic" FISCO rating
Rectangular power characteristics, may be determined using Table 2.
Table 2 "ic" Level Evaluation FISCO square feature with a maximum power output current
Uo
Allowing current to class IIC
mA
Allowing current to class IIB
mA
17.5 112 319
Note. "ic" FISCO maximum output level of the power supply power P0 is not limited to 5.32W.
4.3 FISCO field devices
4.3.1 General
These requirements apply to this safety device connected to the bus, inside or outside the hazardous area, the power supply terminals, and whether they are installed Jane
Except for a single device.
In addition to the requirements GB 3836.4 outside, the handheld terminal also conform to the field terminal (device).
These requirements are as follows.
a) the field device parameter should be the minimum input voltage Ui = 17.5V.
b) shall GB 3836.4 bus terminals isolation from ground.
Requirement c) the bus connecting terminal separately powered field device, shall GB 3836.4 with other power isolation, ensure that the wires
The terminal holding passive, multi-point grounding avoid bus.
d) the maximum unprotected internal capacitance Ci of each field device should not exceed 5nF. DESCRIPTION lose not required on the certificate or plate
Technical requirements and the internal parameters.
e) under normal or fault conditions specified in GB 3836.4, the bus connecting terminal should remain passive, i.e., the system does not become terminal
Energy sources, except when the leakage current is less than 50μA.
f) field devices are to be determined GB 3836.4 protection level (level explosion) and adapted to class IIC.
g) a predetermined field device in hazardous location installations shall be determined in accordance with the temperature class GB 3836.4.
4.3.2 Additional requirements for "ia" and "ib" level FISCO field device
"Ia" and "ib" Additional requirements Level FISCO field device is as follows.
a) Minimum field device parameters should be input Ii = 380mA, Pi = 5.32W;
b) the internal inductance of the field device is not greater than 10μH.
4.3.3 Additional requirements for "ic" FISCO field device level
For "ic" Additional requirements FISCO field device level is not greater than their internal inductance of 20μH.
Terminator 4.4
The system requires bus terminal comprising a resistor - terminator capacitors, the terminal is equivalent to a bus at the endpoint
Less 90Ω resistor and 2.2 uF maximum (including tolerances) of the series circuit of a capacitor.
Note 1. GB/T 16657.2 element specifies the parameters required under operating conditions.
Terminal should.
a) take explosion-proof measures for IIC class equipment;
b) not less than the input voltage Ui 17.5V;
Note 2. If it is considered faulty capacitive element may short-circuit current, the rated power of 5.1W resistor required, the temperature should work group of 3.4W
The rate of loss is determined.
c) in accordance with the GB 3836.4 isolated;
d) the maximum unprotected internal inductance Li is not greater than 10μH;
e) a predetermined terminal installed within the hazardous area should meet the predetermined temperature classification GB 3836.4.
The terminal is available in the field device or an internal power supply.
Note 3. When the nature of the safety assessment, the effective capacitance of the terminal device (Ci) can be regarded as no impact on the nature of the security system.
4.5 Simple equipment
Intrinsically safe systems using simple equipment shall comply with the provisions of GB 3836.4. Must be given a simple device capacitance and inductance, so that
Able to assess the system requirements of 5.1. The sum of the sum of all the inductance capacitor connected to the system should FISCO are not greater than 10μH and
5nF.
NOTE. To determine temperature class "ia" or in the "ib" simple rating system equipment should pay attention, because the maximum power that appears up to 5.32W. "Ic" rating system
The temperature within the group is determined according to the normal operating conditions.
4.6 mark
Each piece of equipment shall be denoted by the term "FISCO", and indicate its function at its rear, such as power supply, field device or terminator. In addition,
Each piece of equipment should require labeling GB 3836.4, except for part of this modification, e.g., name and address of the manufacturer still indicated.
Some devices require double sign, so that both can be used for FISCO systems, but also for conventional intrinsically safe system. At this point, it should be
Note the differences between conventional signs and FISCO intrinsically safe system flag.
For FISCO power supply, not need to mark the output parameters Uo, Io, Co, Lo, Po and Lo/Ro; field device for FISCO
Or the terminator, and does not need to enter the internal flag Ui, Ii, Ci, Li, Pi and Li/Ri.
4.7 Examples of signs
a) Power supply
Power supply FISCO
Um = 250V
[Ex ia] IIC
Manufacturer's name and address
Model Specifications
-20 ℃ ≤Ta≤ 50 ℃
Explosion-proof certificate number
Product Code
b) the field device
FISCO field devices
ExiaIICT4
Name and address of the manufacturer's model specifications
-20 ℃ ≤Ta≤ 60 ℃
Explosion-proof certificate number
Product Code
c) terminator
FISCO terminator
ExiaIICT4
Name and address of the manufacturer's model specifications
Explosion-proof certificate number
Product Code
d) the field device ditag
Name and address of the manufacturer's model specifications
-20 ℃ ≤Ta≤ 60 ℃
Explosion-proof certificate number
Product Code
-------------
FISCO field devices
ExiaIICT6
-------------
Ui = 28V
Ci = 3nF
Ii = 200mA
Li = 10μH
Pi = 1.2W
5 System Requirements
5.1 General
The system is generally illustrated in the form of Appendix A.
A cable used in the system shall comply with the following parameters.
a) loop resistance Rc. 15 ~ 150Ω/km;
b) circuit inductance Lc. 0.4 ~ 1mH/km;
c) the capacitance Cc. 45 ~ 200nF/km;
d) The maximum length for each leg of the cable type and IIB IIC to 60m;
e) the maximum length of all legs comprises a length of each trunk cable including, for class IIC 1km, for class IIB 5km.
When used with cables of this section, regardless of cable parameters.
Note 1. Installation and configuration requirements for single and multicore cables containing one or more lines IS circuit, see GB 3836.15. IEC 60079-14.2007 Appendix C also
Given to determine the parameters of the cable guide.
When the system consists of the following parts.
a) a power supply;
b) 32 within any number of field devices;
c) up to two terminators.
Each section of the requirements of this section, and the cable used to achieve the above requirements, the system should be considered safe enough.
The explosion proof should be employed in the system device determines the lowest explosion proof system ( "ia", "ib" or "ic"). Security document should
Record Explosion levels determined.
If different subsystems explosion proof systems were evaluated and recorded in a file confirmed, the subsystem may employ different Ex
grade. For example, insert the appropriate certified interfaces on branch "ib" level, as leg "ia" level.
Terminal should be at both ends of the bus, the power supply should be located away from the bus at the end of not more than 60m. If the power supply is connected via the branch line
Then, this branch length should not exceed 60m long.
Note 2. the operating conditions defined in this section and defines a number of field devices connected to the branch line, for a system of up to 32 field devices.
Increase the connection and/or a switch on the system, without having to modify the safety assessment. In line with other types of GB 3836.4 simple
FISCO apparatus may be connected to the system, provided that the total inductance and the total capacitance of each device simple and not greater than 5 nF 10μH, this simple
The total number of field devices and equipment no more than 32.
Safety simplified to file list of equipment used in conjunction with the associated device files. In the file should be able to clearly identify each part of the system
Explosion levels.
The power supply device type determining device class System.
Temperature group each piece of equipment should be determined and recorded in a file. You need to check each piece of equipment suitable for allowing a predetermined place in the most
High ambient temperatures.
Additional requirements 5.2 pairs "ic" FISCO system level
According to the requirements of the design portion of the first edition and FNICO authentication device is available in "ic" FISCO system level.
Meet intrinsic safety requirements, but not as a field device according to FISCO portion of the present apparatus, a terminal and other ancillary equipment, if
Input parameter Ui is not less than 17.5V, Li and Ci internal parameter no greater than 20μH and 5nF, the power supply may be used together with the FISCO
Use the "ic" FISCO system level.
Similarly, as no FISCO device authentication, but the structure conforms GB 3836.8 energy-limited "nL" equipment requirements, if the input variables
Ui number of not less than 17.5V, Li and Ci internal parameter no greater than 20μH and 5nF, are available in "ic" FISCO system level.
When FNICO equipment, the safety device or apparatus for use in energy-limited "ic" FISCO system level, the point should be specified in the installation device. can
With a sign " 'ic' FISCO rating system" label equipment, to meet this requirement.
Appendix A
(Informative)
Typical system
Figure A.1 is a typical system.
legend.
1 --- terminator;
2 --- Power;
3 --- data line;
4 --- handheld terminal;
5 --- field device;
6 --- trunk;
7 --- branch.
A typical system of Figure A.1
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