GB/T 5959.41-2019 English PDF (GB/T5959.41-2019)

GB/T 5959.41-2019: Safety in electroheating installations -- Part 41: Particular requirements for resistance heating equipment -- Heating and melting glass equipment
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GB/T 5959.41-2019
Safety in elcctroheating installations--Part 41. Particular requirements for resistance heating equipment--Heating and melting glass equipment
ICS 25.180.10
K61
National Standards of People's Republic of China
Replace GB 5959.41-2004
Safety of electric heating device
Part 41. Particular requirements for resistance heating devices
Glass heating and melting device
Part 41. Particularrequirementsforresistanceheatingequipment-
(IEC 60519-21.2008, Safetyin electroheatinstalations-
Part 21. Particularrequirementsforresistanceheatingequipment-
Heatingandmeltingglassequipment, IDT)
2019-06-04 released 2020-01-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword I
1 Scope and purpose 1
2 Normative references 1
3 Terms and Definitions 1
4 Electric heating equipment according to the classification of voltage sections 2
5 Classification of electric heating equipment by frequency section 2
6 General requirements 2
7 Isolation and opening and closing 2
8 Connection to the grid and internal connections 2
9 Protection against electric shock 2
10 over current protection 3
11 equipotential bonding 3
12 control circuit and control function 3
13 Thermal protection 3
14 Fire and explosion protection 3
15 Nameplates, markings and technical documents 3
16 Electric heating device inspection and operation information and use and maintenance instructions 3
Foreword
GB/T 5959 has the following 14 parts.
--- GB/T 5959.1 Safety of electrothermal and electromagnetic treatment devices - Part 1. General requirements;
--- GB 5959.2 Safety of electric heating devices - Part 2. Particular requirements for electric arc furnace installations;
--- GB 5959.3 Safety of electroheating devices - Part 3. Particular to induction and conductive heating devices and induction melting devices
Claim;
--- GB 5959.4 Safety of electric heating devices - Part 4. Particular requirements for electric resistance heating devices;
--- GB/T 5959.41 Safety of electric heating devices - Part 41. Particular requirements for electric resistance heating, glass heating and melting
Chemical device
--- GB 5959.5 Safety of electroheat installations - Part 5. Particular requirements for plasma installations;
--- GB 5959.6 Safety of electric heating devices - Part 6. Safety specification for industrial microwave heating equipment;
--- GB 5959.7 Safety of electroheating devices - Part 7. Particular requirements for devices with electron guns;
--- GB 5959.8 Safety of electric heating devices - Part 8. Particular requirements for electroslag remelting furnaces;
--- GB 5959.9 Safety of electric heating devices - Part 9. Particular requirements for high-frequency medium heating devices;
--- GB/T 5959.10 Safety of electroheat installations - Part 10. Particular requirements for resistance and heat tracing systems for industrial and commercial use;
--- GB/T 5959.11 Safety of electric heating devices - Part 11. Particular requirements for liquid metal electromagnetic force devices;
--- GB/T 5959.12 Safety of electric heating devices - Part 12. Particular requirements for infrared electric heating devices;
--- GB 5959.13 Safety of electric heating devices - Part 13. Particular requirements for electric heating devices with an explosive atmosphere.
This part is part 41 of GB/T 5959.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB 5959.41-2004 "Safety of electric heating equipment - Part 41. Resistance heating devices - Glass heating and melting
The special requirements of the chemical device, compared with GB 5959.41-2004, the main technical changes are as follows.
--- cited GB 5959.1-2005 and GB 5959.4-2008;
--- Quoted the terms and definitions in GB/T 2900.23-2008;
--- Inspections that will avoid contact with live parts are changed to regular inspections at least every 6 months (see 16.3.11,.2004 edition)
15.3.101).
This part uses the translation method equivalent to IEC 60519-21.2008 "Safety of electric heating devices - Part 21.
Special requirements for glass heating and melting equipment.
The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.
--- GB/T 16895.21-2011 Low-voltage electrical installations - Part 4-41. Protection against electric shock (IEC 60364-4-41.
2005, IDT)
This section has made the following editorial changes.
--- The standard name is changed to "Safety of electric heating devices - Part 41. Particular requirements for resistance heating devices - Glass heating and melting
Device".
This part was proposed by China Electrical Equipment Industry Association.
This part is under the jurisdiction of the National Technical Committee for Standardization of Industrial Electric Heating Equipment (SAC/TC121).
This section was drafted by. Xi'an Electric Furnace Research Institute Co., Ltd., Kunming University of Science and Technology, Xi'an Zhongye New Materials Co., Ltd., National Electric Furnace
Volume Supervision and Inspection Center.
The main drafters of this section. Ge Huashan, Yu Weijiang, Zhu Xiaohong, Peng Jinhui, Li Xiaojie, Pang Helin, Hu Tu, Wang Xiaoliang.
The previous versions of the standards replaced by this section are.
---GB 5959.41-2004.
Safety of electric heating device
Part 41. Particular requirements for resistance heating devices
Glass heating and melting device
1 Scope and purpose
Replace the following chapter 1 of GB 5959.4-2008.
This section applies to indirect resistance heating equipment operating in the 1st voltage section and the 2nd voltage section for glass heating and melting.
These special requirements are equally applicable to devices where current flows through the electrodes through direct resistance heating and melting of the heated material.
The purpose of this section is to specify the safety requirements for indirect and direct resistance heating equipment for glass heating and melting.
Note. The removal of liquid glass or similar material at the discharge port is part of the production process and is not part of the operation of the electric heating device.
This section also applies to the safety requirements of electrical parts combined with electrical heating and other heating methods such as liquid fuel heating.
Due to process reasons, these requirements do not apply to direct resistance heating equipment for GB 5959.3, GB 5959.2 and GB 5959.8.
2 Normative references
This chapter of GB 5959.4-2008 is applicable.
3 Terms and definitions
This chapter of GB 5959.4-2008 is applicable, but is supplemented as follows.
supplement.
3.101
Glass melting furnace (indirect resistance heating) glass-meltingfurnace(indirectresistanceheating)
A furnace in which the glass is melted by indirect resistance heating.
3.102
Potpot potfurnace
Indirect electric heating is used to melt the glass batching melting equipment in a container called "坩埚", which is made of refractory material and
Placed in the furnace.
3.103
Feeder Filingmachine
A machine that incorporates glass ingredients into a glass melting furnace.
3.104
Reclaimer extractionmachine
A machine for taking out molten glass from a glass melting furnace.
3.105
Discharge point extractionpoint
An opening in the glass melting furnace through which the molten glass is taken out.
Note. The molten glass can be removed manually using a glass worker's tool or removed with a reclaimer. For the crucible furnace, the discharge port is also used as a feed port or a sampling port.
3.106
Grounding electrode earthingelectrode
An electrode mounted in a glass bath and connected to an equipotential system.
4 Classification of electric heating equipment by voltage section
This chapter of GB 5959.4-2008 is applicable.
5 Classification of electric heating equipment by frequency section
This chapter of GB 5959.4-2008 is applicable.
6 General requirements
This chapter of GB 5959.4-2008 is applicable.
7 Isolation and opening and closing
This chapter of GB 5959.4-2008 is applicable.
8 Connection to the grid and internal connections
This chapter of GB 5959.4-2008 is applicable.
9 Protection against electric shock
This chapter of GB 5959.4-2008 is applicable, but is supplemented as follows.
supplement.
9.2.101 For direct or indirect heating of the melting equipment, when the glassworker's tool or reclaimer is immersed in a conductive glass bath, or when glass
When the ingredients mixture is being added to the glass bath, measures should be taken to prevent electric shock.
Such measures are as follows.
--- Install a personal safety grounding electrode at the discharge port. This electrode function should be continuously monitored. When the monitoring device reacts, the glass melts
The furnace should be automatically powered off. If possible, partial power failure, or other appropriate measures should be taken. At this time, re-discharge should be prevented.
Note. The construction and installation of the grounding electrode should ensure that even in the most unfavorable conditions, such as the conductivity and liquid level of the molten pool in the discharge area change
When it is changed, it does not affect its effectiveness.
---Properly prevent contact with live parts (electrodes, heating elements) when using a masonry tool, such as setting a cover
Board or obstacle.
---Insulate the work platform at the operation.
In addition, for indirect heating of glass furnaces (坩埚 furnace).
--- When the leakage current measurement shows danger, the heating power is automatically cut off.
9.2.102 The entire steel structure of the feeder, reclaimer and melting unit shall be connected to the equipotential system.
The personal safety grounding electrode should be installed in the glass bath and connected to the equipotential system.
If an underground equipotential system is installed, the requirements of IEC 60364-4-41 should be met.
10 over current protection
This chapter of GB 5959.4-2008 is applicable.
11 equipotential bonding
This chapter of GB 5959.4-2008 is applicable.
12 control circuit and control functions
This chapter of GB 5959.4-2008 is applicable.
13 Thermal protection
This chapter of GB 5959.4-2008 is applicable.
14 fire and explosion protection
This chapter of GB 5959.4-2008 is applicable.
15 Nameplates, markings and technical documents
This chapter of GB 5959.4-2008 is applicable.
16 Electric heating device inspection and operation information and use and maintenance instructions
This chapter of GB 5959.4-2008 is applicable, but is replaced and supplemented as follows.
replace.
16.3.4 For direct or indirect heating of the melting equipment, when the glassworker's tool or reclaimer is immersed in a conductive glass bath, or when the glass is mixed
When the compound is being added to the glass bath, the following requirements (in accordance with local safety regulations) should be observed.
--- Use protective equipment (such as overalls, shoes, gloves);
--- Use insulated tools.
These measures, as well as the measures described in 9.2.101, should be provided to prevent electrical shock.
supplement.
16.3.101 It shall be checked during installation and subsequent periodic inspection to avoid contact with the live parts of the equipment (whose potential is higher than the ground potential)
Requirements include checking the necessary power outage systems.
supplement.
16.4.101 The following requirements (in accordance with local safety regulations) should be observed when replacing the electrode during maintenance work.
---Use protective equipment (such as overalls, shoes, gloves);
---Use insulating tools;
--- Use protective ultra low voltage (PELV).
GB/T 5959.41-2019
Safety in elcctroheating installations--Part 41. Particular requirements for resistance heating equipment--Heating and melting glass equipment
ICS 25.180.10
K61
National Standards of People's Republic of China
Replace GB 5959.41-2004
Safety of electric heating device
Part 41. Particular requirements for resistance heating devices
Glass heating and melting device
Part 41. Particularrequirementsforresistanceheatingequipment-
(IEC 60519-21.2008, Safetyin electroheatinstalations-
Part 21. Particularrequirementsforresistanceheatingequipment-
Heatingandmeltingglassequipment, IDT)
2019-06-04 released 2020-01-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword I
1 Scope and purpose 1
2 Normative references 1
3 Terms and Definitions 1
4 Electric heating equipment according to the classification of voltage sections 2
5 Classification of electric heating equipment by frequency section 2
6 General requirements 2
7 Isolation and opening and closing 2
8 Connection to the grid and internal connections 2
9 Protection against electric shock 2
10 over current protection 3
11 equipotential bonding 3
12 control circuit and control function 3
13 Thermal protection 3
14 Fire and explosion protection 3
15 Nameplates, markings and technical documents 3
16 Electric heating device inspection and operation information and use and maintenance instructions 3
Foreword
GB/T 5959 has the following 14 parts.
--- GB/T 5959.1 Safety of electrothermal and electromagnetic treatment devices - Part 1. General requirements;
--- GB 5959.2 Safety of electric heating devices - Part 2. Particular requirements for electric arc furnace installations;
--- GB 5959.3 Safety of electroheating devices - Part 3. Particular to induction and conductive heating devices and induction melting devices
Claim;
--- GB 5959.4 Safety of electric heating devices - Part 4. Particular requirements for electric resistance heating devices;
--- GB/T 5959.41 Safety of electric heating devices - Part 41. Particular requirements for electric resistance heating, glass heating and melting
Chemical device
--- GB 5959.5 Safety of electroheat installations - Part 5. Particular requirements for plasma instal...