JB/T 5344.1-2004 General Rules for Submerged Arc Furnace Transformers
Some standard content:
ICS29.180
Machinery Industry Standard of the People's Republic of China
JB/T5344.1-—2004
Replaces IB/T5344;1-1991
Submerged arc furnace transformers
Submerged arc furnace transformers-General2004-03-12Promulgated
Implementation on 2004-08-01
Promulgated by the National Development and Reform Commission of the People's Republic of ChinaForeword
1 Scope
2 Normative references
3 Terms and definitions
Product classification,
Technical requirements.
Conditions of use.
Temperature rise limit and cooling method marking
Allowable deviation
Insulation level
Ability to withstand short circuit
General structural requirements,
Test items and methods
Routine test,
Type test.
Special test..
6.4 Test method
7 Marking, packaging, transportation and storage
Water-cooled outlet terminal of submerged arc furnace transformer
Appendix A (informative appendix)
Figure 1 Wheel gauge and track gauge Fig.
Fig. 2 Schematic diagram of the arrangement of the plate-type secondary outlet terminals with top outletsFig. 3 Schematic diagram of the dimensions of the secondary outlet terminal board, Fig. A.1 Structural type of water-cooled secondary outlet terminals, Table 1 Priority numbers for rated capacity of submerged arc furnace transformers, Table 2 Temperature rise limits,
Table 3 Allowable deviations
Table 4 Wheelbase and track gauge,
JB/T5344.12004
JB/T5344.1—2004
This standard replaces JB/T5344.1—1991 "General Rules for Submerged Arc Furnace Transformers". Compared with JB/T5344.11991, the main changes of this standard are as follows: the name of the standard is changed to "General Principles of Submerged Arc Furnace Transformers"; the writing rules of the standard are in accordance with the provisions of GB/T1.1-2000 "Guidelines for Standardization Work Part 1: Structure and Writing Rules of Standards";
The allowable deviation of short-circuit impedance is changed from ±15% to ±10% (see Table 3 in 5.3); the requirements for the ability of transformers to withstand short circuits are added (see 5.5); the informative appendix "Water-cooled outlet terminals of submerged arc furnace transformers" (see Appendix A) is modified. Appendix A of this standard is an informative appendix.
This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Transformer Standardization (SAC/TC44). The drafting units of this standard are: Shenyang Transformer Research Institute, Changchun Transformer Co., Ltd. The main drafters of this standard are: Dong Huisheng, Zhang Haoping, Xiao Lizhong, Zhang Maoxiang, and the previous versions of the standards replaced by this standard are: -JB/T5344.11991.
1 Scope
Submerged arc furnace transformer
JB/T5344.1—2004
This standard specifies the product classification, technical requirements, test items and methods, and marking, packaging, transportation and storage of submerged arc furnace transformers. This standard applies to oil-immersed submerged arc furnace transformers. 2 Normative references
The clauses in the following documents become clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties who reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard. GB/T191 sales
packaging storage and transportation pictorial marking (GB/T191-2000, eqvISO780: 1997) GB1094.1 Power transformers Part 1: General (GB1094.1-1996, eqvEC60076-1: 1993) GB1094.2 Power transformers Part 2: Temperature rise (GB1094.2~-1996, eqvEC60076-2: 1993) GB1094.3 Power transformers Part 3: Insulation level, insulation test and external insulation air gap (GB1094.3-2003, eqvIEC 60076-3:2000)
GB1094.5 Power transformer Part 5: Capacity to withstand short circuit (GB1094.5-2003, cqvIEC60076-5:2000) GB/T2900.1-1992 Basic terms of electrical terminology (neqIEC60050-121:1978) GB/T2900.151997
EC60050-321:1986)
Electrical terminology Transformer, mutual inductor, voltage regulator and reactor (negEC60050-421:1990: Three-phase oil-immersed power Transformer technical parameters and requirements GB/T6451—1999
JB/T501 Test Guide for Power Transformers
Model compilation method for transformer products
JB/T3837
3 Terms and definitions
Terms and definitions established in GB/T2900.1, GB/T2900.15 and GBI094.1 apply to this standard. 4 Product classification
4.1 Submerged arc furnace transformers can be divided into yellow phosphorus furnace transformers, calcium carbide furnace transformers, ferroalloy furnace transformers and other types of submerged arc furnace transformers according to the corresponding submerged arc furnace classification method. 4 .1.1 The product models of various types of submerged arc furnace transformers shall comply with the provisions of JB/T3837. 4.1.2 The rated capacity of submerged arc furnace transformers shall preferably adopt the priority numbers specified in Table 1. When the use requirements cannot be met, other special capacity values may be selected.
The rated capacity of the single-phase submerged arc furnace transformer that constitutes the three-phase transformer group should be 1/3 of the value specified in Table 1, and the rated capacity of other single-phase submerged arc furnace transformers should also adopt the priority numbers specified in Table 1. The rated capacity specifications and performance parameters of different types of submerged arc furnace transformers are determined according to the corresponding standards. Table 1 Rated capacity priority numbers of submerged arc furnace transformers kVA
10 000
16 000
50 000
JB/T5344.12004
5 Technical requirements
5.1 Conditions of use
5.1.1 The normal operating conditions of submerged arc furnace transformers shall comply with the provisions of GB1094.1 for indoor transformers. 5.1.2 The special operating conditions of submerged arc furnace transformers shall be determined by negotiation between the manufacturer and the user. 5.2 Temperature rise limit and cooling method marking
The temperature rise limit of submerged arc furnace transformers with insulation material heat resistance grade A at 1.1 times the rated current shall not exceed the provisions of Table 2. Table 2 Temperature rise limit
Top oil
Temperature rise limit
Winding (average)
Core, electrical connection wires outside winding or structural parts in oil tank so that adjacent parts are not damaged by heat or oil is not over-aged, usually not exceeding 805.2.2 The cooling method mark of submerged arc furnace transformer shall comply with the provisions of GB1094.2. 5.3 Allowable deviation
The allowable deviation between the measured value and the specified value of the performance parameter of submerged arc furnace transformer shall not exceed the provisions of Table 3. Table 3 Allowable deviation
Total loss
No-load loss or load loss
Short-circuit impedance
No-load current wwW.bzxz.Net
Voltage ratio
Insulation level
Main tapping
Other tapping
The insulation level and mark of submerged arc furnace transformer shall comply with the provisions of GB1094.3. Capacity to withstand short circuit
The capacity of submerged arc furnace transformer to withstand short circuit shall comply with the provisions of GB1094.5. 5.6 General structural requirements
5.6.1 All submerged arc furnace transformers shall be equipped with gas relays and pressure relief valves. Deviation%
+15But the total loss shall not exceed +10
5.6.2 Submerged arc furnace transformers shall be equipped with oil storage cabinets, and transformers of 8000kVA and above shall take measures to prevent oil aging. 5.6.3 All submerged arc furnace transformers shall be equipped with trolleys. The trolleys shall be easy to pull, the rollers shall be able to turn 90°, and their wheelbase or track gauge shall comply with the provisions of Figure 1 and Table 4.
Figure 1 Wheelbase and track gauge diagram
Table 4' Wheelbase and track gauge
Roller center distance
Track gauge1
Note: Due to structural reasons, the longitudinal wheelbase (or track gauge) of the trolley can adopt a specified value different from the transverse wheelbase (or track gauge) or a multiple value thereof, 2
JB/T5344.1—2004
5.6.4 The oil level gauge, signal thermometer, signboard, grounding bolt, tap changer operating mechanism and heat dissipation device of the submerged arc furnace transformer shall not be placed on the secondary side.
5.6.5 The structural type, size and relative position of the secondary outlet terminals of the submerged arc furnace transformer can adopt the following types: a) The layout type of the plate-type secondary outlet terminals with top outlet is shown in Figure 2, 10
Non-branch structure
2 Branch structure
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3 Branch structure
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2x4 branch structure
Figure 2 Schematic diagram of the layout of the plate-type secondary outlet terminals with top outlet b) The size of the secondary outlet terminal plate is shown in Figure 3. JB/T5344.1—2004
100 terminal
200 terminal
120 span
250 terminal
12×422
Figure 3 Schematic diagram of secondary outlet terminal board size
c) When water-cooled secondary outlet terminals are used, the types and parameters to be adopted are shown in Appendix A. 150 required
300 cover
16×Φ22
5.6.6 The oil cooling system, oil protection device, oil tank and its accessories of submerged arc furnace transformers shall comply with the provisions of GB/T6451 if there are no special requirements in this standard.
6 Test items and methods
6.1 Routine test
a) Winding resistance measurement:
b) Voltage ratio measurement and connection group number verification:e) Short-circuit impedance and load loss measurement:
d) No-load current and no-load loss measurement:
e) Dielectric loss factor (tanの) and winding insulation resistance to ground measurement (35kV and above);f) Absorption ratio or polarization index measurement:| |tt||g) Externally applied voltage withstand test:
h) Inductive voltage withstand test:
i) On-load tap changer test
j) Insulating oil test (for products with voltage level of 66kV and above or rated capacity of 8000kVA and above, dissolved gas analysis test in oil shall also be carried out before leaving the factory):
k) Sealing test of oil tank and oil storage cabinet:
1) Lightning full wave impulse test (110kV level). 6.2 Type test
a) Temperature rise test:
b) Lightning full wave impulse test (66kV and below):c) Oil tank mechanical strength test.
6.3 Special tests
a) Measurement of capacitance between winding and ground and between windings; b) Measurement of transient voltage transmission characteristics:
c) Measurement of zero-sequence impedance:
d) Short-circuit withstand capacity test;
e) Sound level measurement:
f) No-load current harmonic measurement:
g) Special insulation test.
Test method
JB/T5344.1—2004
The test procedures and methods for submerged arc furnace transformers shall comply with the provisions of GB1094.1, GB1094.2, GB1094.3, GB1094.5, GB/T6451 and JB/T501.
7 Marking, packaging, transportation and storage
7.1 All wiring terminals and grounding devices of submerged arc furnace transformers should be clearly marked; and there should be a nameplate that is not easily corroded and placed in a visible place. The nameplate should clearly indicate the following: a) Product name and model:
b) Standard code:
c) Manufacturer name:
d) Factory serial number:
e) Manufacturing date:
f) Number of phases:
g) Rated capacity, in kVA or MVA; h) Rated frequency, in Hz:
i) Rated voltage of each winding (value at rated capacity), in V or kV: j) Rated voltage of each winding Rated current, in A or kA: k) Connection group number and winding connection diagram:
1) Tap voltage of each tap position of the winding (the first tap position corresponds to the highest secondary voltage), tap current and tap capacity: m) Condition of use: Indoor:
n) Cooling method:
o) Insulation level;
p) Voltage regulation method:
q) Actual measured value of short-circuit impedance expressed as a percentage (values at the highest and lowest secondary voltages and the rated secondary voltage): r) Weight (total weight, oil weight, body hanging weight, upper oil tank weight, transportation weight), in kg or t Note: For products with bushing-type current transformers, the technical data of the current transformer should be given. 7.2 The packaging mark of submerged arc furnace transformer products shall comply with the provisions of GB/T191, and the packaging box shall comply with the requirements of the corresponding standards. During transportation and storage, measures should be taken to prevent the secondary outlet terminals from being exposed to sunlight and rain. 7.3 The factory technical documents of arc furnace transformers shall include installation and operation instructions, product certificates, routine test reports, product appearance drawings, nameplate drawings, product disassembly lists, packing lists and installation and operation instructions of accessories. JB/T5344.1—2004
Appendix A
(Informative Appendix)
Water-cooled outlet terminals of submerged arc furnace transformers
The water-cooled secondary outlet terminals of submerged arc furnace transformers can adopt the structural type shown in Figure AI. For specific size parameters, please refer to the product samples of each production unit.
Insulation material
(Low ether steel plate)
Sealing diagram
(Low magnetic steel plate)
Figure A.1 Structural type of water-cooled secondary outlet terminals People's Republic of China
Mechanical Industry Standard
Submerged Arc Furnace Transformer
JB/T 5344.1-2004
Published and distributed by Machinery Industry Press
No. 22 Baiwanzhuang Street, Beijing
Postal code: 100037
Format: 890mm×1240mm1/16?0.75 printing sheet·17,000 wordsFirst edition, first printing in August 2004
Book number: 15111·7330
Website: http://www.cmpbook.com（010）88379779
Editorial department telephone number:
Direct sales center telephone number:
（010）88379693
All copies without anti-counterfeiting label are pirated
Copyright reserved
Infringements will be investigated3 Special tests
a) Measurement of capacitance between winding and ground and between windings; b) Measurement of transient voltage transmission characteristics:
c) Measurement of zero-sequence impedance:
d) Short-circuit withstand capacity test;
e) Sound level measurement:
f) No-load current harmonic measurement:
g) Special insulation test.
Test method
JB/T5344.1—2004
The test procedures and methods for submerged arc furnace transformers shall comply with the provisions of GB1094.1, GB1094.2, GB1094.3, GB1094.5, GB/T6451 and JB/T501.
7 Marking, packaging, transportation and storage
7.1 All wiring terminals and grounding devices of submerged arc furnace transformers should be clearly marked; and there should be a nameplate that is not easily corroded and placed in a visible place. The nameplate should clearly indicate the following: a) Product name and model:
b) Standard code:
c) Manufacturer name:
d) Factory serial number:
e) Manufacturing date:
f) Number of phases:
g) Rated capacity, in kVA or MVA; h) Rated frequency, in Hz:
i) Rated voltage of each winding (value at rated capacity), in V or kV: j) Rated voltage of each winding Rated current, in A or kA: k) Connection group number and winding connection diagram:
1) Tap voltage of each tap position of the winding (the first tap position corresponds to the highest secondary voltage), tap current and tap capacity: m) Condition of use: Indoor:
n) Cooling method:
o) Insulation level;
p) Voltage regulation method:
q) Actual measured value of short-circuit impedance expressed as a percentage (values at the highest and lowest secondary voltages and the rated secondary voltage): r) Weight (total weight, oil weight, body hanging weight, upper oil tank weight, transportation weight), in kg or t Note: For products with bushing-type current transformers, the technical data of the current transformer should be given. 7.2 The packaging mark of submerged arc furnace transformer products shall comply with the provisions of GB/T191, and the packaging box shall comply with the requirements of the corresponding standards. During transportation and storage, measures should be taken to prevent the secondary outlet terminals from being exposed to sunlight and rain. 7.3 The factory technical documents of arc furnace transformers shall include installation and operation instructions, product certificates, routine test reports, product appearance drawings, nameplate drawings, product disassembly lists, packing lists and installation and operation instructions of accessories. JB/T5344.1—2004
Appendix A
(Informative Appendix)
Water-cooled outlet terminals of submerged arc furnace transformers
The water-cooled secondary outlet terminals of submerged arc furnace transformers can adopt the structural type shown in Figure AI. For specific size parameters, please refer to the product samples of each production unit.
Insulation material
(Low ether steel plate)
Sealing diagram
(Low magnetic steel plate)
Figure A.1 Structural type of water-cooled secondary outlet terminals People's Republic of China
Mechanical Industry Standard
Submerged Arc Furnace Transformer
JB/T 5344.1-2004
Published and distributed by Machinery Industry Press
No. 22 Baiwanzhuang Street, Beijing
Postal code: 100037
Format: 890mm×1240mm1/16?0.75 printing sheet·17,000 wordsFirst edition, first printing in August 2004
Book number: 15111·7330
Website: http://www.cmpbook.com（010）88379779
Editorial department telephone number:
Direct sales center telephone number:
（010）88379693
All copies without anti-counterfeiting label are pirated
Copyright reserved
Infringements will be investigated3 Special tests
a) Measurement of capacitance between winding and ground and between windings; b) Measurement of transient voltage transmission characteristics:
c) Measurement of zero-sequence impedance:
d) Short-circuit withstand capacity test;
e) Sound level measurement:
f) No-load current harmonic measurement:
g) Special insulation test.
Test method
JB/T5344.1—2004
The test procedures and methods for submerged arc furnace transformers shall comply with the provisions of GB1094.1, GB1094.2, GB1094.3, GB1094.5, GB/T6451 and JB/T501.
7 Marking, packaging, transportation and storage
7.1 All wiring terminals and grounding devices of submerged arc furnace transformers should be clearly marked; and there should be a nameplate that is not easily corroded and placed in a visible place. The nameplate should clearly indicate the following: a) Product name and model:
b) Standard code:
c) Manufacturer name:
d) Factory serial number:
e) Manufacturing date:
f) Number of phases:
g) Rated capacity, in kVA or MVA; h) Rated frequency, in Hz:
i) Rated voltage of each winding (value at rated capacity), in V or kV: j) Rated voltage of each winding Rated current, in A or kA: k) Connection group number and winding connection diagram:
1) Tap voltage of each tap position of the winding (the first tap position corresponds to the highest secondary voltage), tap current and tap capacity: m) Condition of use: Indoor:
n) Cooling method:
o) Insulation level;
p) Voltage regulation method:
q) Actual measured value of short-circuit impedance expressed as a percentage (values at the highest and lowest secondary voltages and the rated secondary voltage): r) Weight (total weight, oil weight, body hanging weight, upper oil tank weight, transportation weight), in kg or t Note: For products with bushing-type current transformers, the technical data of the current transformer should be given. 7.2 The packaging mark of submerged arc furnace transformer products shall comply with the provisions of GB/T191, and the packaging box shall comply with the requirements of the corresponding standards. During transportation and storage, measures should be taken to prevent the secondary outlet terminals from being exposed to sunlight and rain. 7.3 The factory technical documents of arc furnace transformers shall include installation and operation instructions, product certificates, routine test reports, product appearance drawings, nameplate drawings, product disassembly lists, packing lists and installation and operation instructions of accessories. JB/T5344.1—2004
Appendix A
(Informative Appendix)
Water-cooled outlet terminals of submerged arc furnace transformers
The water-cooled secondary outlet terminals of submerged arc furnace transformers can adopt the structural type shown in Figure AI. For specific size parameters, please refer to the product samples of each production unit.
Insulation material
(Low ether steel plate)
Sealing diagram
(Low magnetic steel plate)
Figure A.1 Structural type of water-cooled secondary outlet terminals People's Republic of China
Mechanical Industry Standard
Submerged Arc Furnace Transformer
JB/T 5344.1-2004
Published and distributed by Machinery Industry Press
No. 22 Baiwanzhuang Street, Beijing
Postal code: 100037
Format: 890mm×1240mm1/16?0.75 printing sheet·17,000 wordsFirst edition, first printing in August 2004
Book number: 15111·7330
Website: http://www.cmpbook.com（010）88379779
Editorial department telephone number:
Direct sales center telephone number:
（010）88379693
All copies without anti-counterfeiting label are pirated
Copyright reserved
Infringements will be investigated
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