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Mechanical Industry Standard of the People's Republic of China
JB/T56153
1999-12-30
Wa Xianji Dong
2000-06-01
JB/T561531999
This standard is a revision of JB/T56153-94 Test Transformer Product Quality Grading. The main changes between this standard and the original standard are as follows: 1 The format of the standard is in accordance with the provisions of GB/T1.1-1993. 2 The referenced standards are confirmed in accordance with the current standards, and the relevant contents are modified. 3 The provisions for determining the quality grade of test transformer products in accordance with GB/T12707 are added. 4 The concepts of the item rate of the required test items and the item rate of the main test items are added, and the quality grade of the test transformer is carried out according to the calculated item rate. 5 Since the concept of "usable" in the original standard is vague, this standard adopts the concept of "Class C non-conformity" and explains it in the standard.
6 Added "drawing and technical document assessment items as the main examination items. This standard replaces JB/T56153-94 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Transformer Standardization. The drafting units of this standard: Shenyang Transformer Research Institute, Yingkou Special Transformer Factory. The drafters of this standard: Lin Ran, Lu Fanglie, Dai Xuezhong, Diu Runping. This standard was first formulated in 1988 and revised for the first time in 1999. This standard is entrusted to Shenyang Transformer Research Institute for interpretation. I
1 Scope
JB/T5615319 99
JB/T5615394
This standard specifies the classification, sampling, quality classification requirements, inspection methods and quality grade assessment methods of oil-immersed test transformer products.
This standard applies to the assessment of quality grades of single-phase oil-immersed test transformer products. 2 Cited standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of the standard, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the new versions of the following standards. GB/5071986
GB 1094. 2--1936
GB/T 2828-1587
GB/T 7252—1987
(3/T 7328-1987
CB/T 7600—1987
GB/T 7601-—1987
GB/T 8170—1987
GB/T12707—1991
Determination of dielectric strength of insulation
Part 2 Temperature rise of electric transformers (EVIEC60076.2:1993)Batch inspection counting single sample thickness and extraction table (for inspection of subsequent batches)Dissolved gas analysis and judgment guide for transformer oilProduction grade determination of transformers and reactors
Determination of moisture content in transformer oil during operation (coulometric method)Determination of moisture content in transformer oil during operation (gas chromatography)Numerical value rounding rules
Guidelines for quality grading of industrial products
Complete verification of product drawings and design documents
JB/T 5054. 5--1999
JB/T 9641 ---1999
3 Definitions
Test transformer
This standard adopts the following definitions.
3.1 Mandatory test item rate
The ratio of the number of mandatory test items that reach a certain quality characteristic level to the total number of mandatory test items. 3.2 Test item rate
The ratio of the number of test items that reach a certain quality characteristic level to the total number of test items. 4 Sampling
4.1 The test transformer product series segmentation shall be in accordance with the provisions of Table 1. If the minimum number of production varieties is not reached, it cannot be regarded as a series segment, but only as a variety (check the inventory record.
4.2. Finished product sampling
4.2.1 For products with a capacity of 250kVA and below, the sample size shall be determined according to the batch range in accordance with the provisions of GB/T2828 standard. Take 2 to 3 units per batch. The products of each series section can have different capacities. A normal sampling plan is adopted. The general inspection level is I, and the qualified quality level (AQL) is 2.5.
Wa Extremely Slow 1999-12-30
2000-06-01 Cable
JB/T561531999
4.2.2 For products with a capacity of 300kVA and above, a single unit inspection method is allowed. 4.2.3 When inspecting two or more series sections at the same time, they should be carried out separately in accordance with this regulation. 4.3 Semi-finished product sampling
4.3.1 Coil: At least one high and low voltage coil is sampled at the manufacturing site, and its voltage, wear and structure should be close to the sample. 4.3.2 Core: At least one unit is sampled at the manufacturing site, and its diameter should be close to the sample. 4.3.3 Body: At least 1000 pieces shall be tested at the manufacturing site, and its structure, electrical and capacity parts shall be close to the detailed specifications. 5 Principles of quality grade division, classification of assessment items and rate of failure 5.1 According to the principle of product quality grade division specified in GB/T12707, the quality of the test transformer is divided into three levels: superior product, first-class product and qualified product.
5.2 According to the principle of importance classification of product quality characteristics, the assessment items are divided into mandatory test items and main test items. 5.3 The rate of failure is divided into the rate of mandatory test items and the rate of main test items. 5.1 After the product is evaluated item by item according to Table 3, the rate of failure of each item is calculated, and the rate of failure of qualified products, first-class products and superior products shall comply with the provisions of Table 2. Test transformer series segment division table
Rated capacity
Rated voltage range
5--120
15~250
20~250
20~250
30~300
40-~250
50~500
60~600
75--750
100~1000
Required test item rate
Main test item rate
Low voltage rated voltage
High voltage rated bottom voltage
0.3. G.5, ↓, 3, 5. 10, 15, 30, 25, 40, 50,5,10,15,20,30,35,,50,50100510,15,20,3040,5c,0,109,12c
6. 22,0.38,0.6
5,10,15,25,30,35,56;0.100,12c,1505,10.15,25,30,35,5c,F0,120,15c,1800.38
G. 38, 0. 4
0.38,6.10
.38, 6, 10
0. 38, 5, 10
0.1.c.5, 6. 10
0.4, 6, 10
0.6, 6,10
5,10,35,50,60.100,120,150,200,25015,35,50.60,100,120,200,250
20,35 ,5,60,100,120,150,200,25025,40,50,60.100,120.150,200,25c,30,40,50,60,100,120,150, 300,40,50,60,100,120,150,200,25050,100,125,200,250,500
60,100 ,150200,300,6c0
75,100,150,250,375,950,
1c0,150,250,500.1000
Quality grade evaluation method
Qualified products
We rarely produce
3 of these products, including
one general
commercial electric store
2 500kv
and above
Specifications
have at least
one
superior product
85% reach
first-class
10% reach
85% reach
first-class, and the rest reach
85% reach
appropriate to qualified; the quality characteristics of the remaining items are
Class 1C unqualified means that the unit production The quality characteristics of the product are slightly inconsistent with the regulations. The data after the 2-item rate calculation should be processed according to the provisions of GB/T8170 standard, 2
, and the rest are qualified
6 quality classification
JB/T561531999
The quality characteristic level and inspection method of the test transformer are shown in Table 3. Table 3
Test items
Product standard
No-load loss
Load resistance
No-load current
Short-circuit resistance
Inductive withstand voltage
Partial evaporation%
250kV and below
300 kV change and above
External withstand voltage test
Temperature rise test
No partial discharge requirement
Partial discharge amount
Products
With partial discharge requirements
Output waveform detection
Insulation electric spot
(20℃)
Absorption ratio measurement
Determination of R60/
Below 100
100-250kV
Above 250kV
250kV without H
Dielectric loss factor (tang) measurement
Electrical strength
Pressure gas content
Oil water content
Below 250 kV
25GV and above
50G kV and above
250~300kV
500 kV and above
Quality characteristic level
Conform to JB/T 9641 standard
According to the requirements of JB/T 96-41 standardbZxz.net
According to the rated withstand voltage value
Conform to the requirements of JB/T 9641 standard
According to the requirements of CB 1094. 2 standard
Measure 40%U and
s0%U10
60%Um
60% U≤10
0% Uu10
100% U.10
Check methods and requirements
: 1) Check whether the product meets the corresponding
12) Check whether the product has its own model
1) Check the calculation sheet, test equipment,
test method and test report
2) Conduct independent test according to the requirements
! 3) The accuracy of instruments and meters meets
Standing time is in accordance with technical requirements
Check the test notice
Check the test estimate validity period is 5 years
Check the test report and retest the product
Check the test report or retest the product
For 0.5kV or below, use 500MQ
5UGV megohmmeter
For 0.5~100kV, use 1000M1000V megohmmeter
t00 -~250 kV Use
2500M02500V megohmmeter
For voltage above 2500kV, use 5000Mn
5000V megohmmeter
1)Within the temperature range of 10~:10℃
2)Measure with megohmmeter
Use bridge to measure
1)Take oil sample from the bottom of the sample
2)Electric strength shall be in accordance with GB/T 507
3)Gas content shall be in accordance with GB/T7252
4)Water content shall be in accordance with GB/T 7600 or
GB/T 7601 regulations
Assessment items
User evaluation
Sound level
Iron shell type
Sealing performance
Insulation type
Iron core grounding
Iron core burr
Iron core rust
Iron core diameter range
155~260
Parallel winding wire
Wire welding strength
JB/T561531999
Table 3 (continued) )
Egg quality characteristic level
The product meets the requirements of the Taiwan
, safe and energy-saving
Good appearance
The product is reliable
Durable, beautiful in appearance
Fire-proof, actively serving users
Meeting user requirements
No oil leakage
Product quality is consistent
Inspection methods and requirements
[1)Inspect user opinions in the past 2 years
International peers Products of this type: Wanying; in China!
and processing nesting
are extremely user-friendly
considerate and enthusiastic
iron should be connected to the ground and there should be no multi-point grounding. After removing the grounding sheet, the insulation resistance is
the iron core sheet shall not have rust
it is allowed to have a speed film covering
although there is a slight trace of olefin
but the rust covered by the paint film accounts for 20% of the visible part
and below || tt||No open circuit
It is allowed to have film
The rust on the cover accounts for the visible part! %
and below
No short circuit
No open circuit
The tensile strength of the wire welding point is not lower than that of the parent material 3) At least 3 copies of user opinions
Measurement method CB/T7328, measurement at a distance of 1m
1) Sample inspection
210kv and below products, iron width 50 kpa
Absolute pressure 20kPa
3) For products above 100kV, place them in a place
for 24 hours, and the oil level should be kept at 2/3 of the oil level
13 Sample inspection
2 The measuring point is on the side of the grounding plate
3 months 500V mega-mount test
1) In the selection of the plate,Select 5 pieces in the sequence. The maximum value at any point shall not exceed the specified value. 2) Use a micrometer to measure the first response. 1) Sample inspection. The visible part is measured. 1) Check two pieces in a row. 2) Sample inspection. The visible part of the yoke is measured. The titanium chip is close to the piece. The piece is not loose. 1) Check the finished product before varnishing. 2) 500V megohmmeter measures each piece. 1) Any three winding workers, each of whom welds a piece (place) on the spot, as the welding part. 2) Take 5 Parts on the tensile testing machine
3) If there is no approved machine, other methods are allowed to be used, with welding wire continuously difficult
Assessment items
Also enjoy the seat mm
Medical knee
Damage
Cleanliness
Equipment body vacuum treatment
Below 100kV
100kV and above
Shoot in the box
Device Body
Lead welding
Tightening condition
Below 100k
100250kV
Above 300
25tVA and below
Above 300kVA
JB/T561531999
Table 3 (continued)
Quality characteristics
Non-metallic foreign matter
No foreign matter|| tt||Jin Guo foreign body 2 ten
Good hanging point with sex knife
ground engineering: no safety electric hair
thorns allow light oxygen
no metal foreign body
non-metallic foreign body
no foreign body
welding point processing,
no real single burr, no
beautification phenomenon
Feng Jinguo foreign body
no foreign body
welding point without
sharp burrs Anaerobic
Chemical design black
Inspection Jifang Jiehe more demand
Xiang Ben inspection room
2 is greater than 00mm, see one place that
is not wrong
dynamic guide thread device is unqualified
1D) Sample and rate finished product mold inspection
Calculate the percentage of the blocked brand occupying the berth
surface rent
33 Use a vernier caliper to measure
Zun electric board at the small beat home||tt ||2 Merchants
1 Sample and finished car inspection
2 Light charging inspection
33 Non-metallic rising objects mm
Draft plan one
Initial discovery and three people identified
13 Sample car insurance inspection
23 Any three used wires, check the increase
Good day test and hand must
Sample inspection (warm mother, plastic fast.
Pressure red. Lead wire cool support, etc.)
2 All hands 3. The number in the table is not likely to fall off. 4. The number of loose items that can fall off is unqualified. 13. Check the vacuum treatment process equipment and the records within thirty months. The time, warpage, and cold awakening water are all within 2 hours. If the wine does not meet the requirements, it is unqualified. 1. Check the fresh version. 2. The table shows that it is acceptable. Number of defects
81 storage card, surface deformation, oil level
allow, please surface line one place is counted as one
4 dynamic fee collection, time, scratch,
please model, cover code counts 5 items as one
Assessment items
Casing porcelain parts
Drawings and technical items
Note, items with \*\ are required items
JB/T56153
Table 3 (end)||tt ||Quality characteristic level
Conform to standard requirements
No more than
Inspection methods and requirements
Inspect according to the standards of each department
1) Check whether the product drawings conform to
relevant standard requirements
2) Check whether the technical documents conform to
JB/T5054.5 standard requirements,
check their correctness, completeness and
consistency
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