This standard applies to E-shaped iron cores (hereinafter referred to as "iron cores") used in three-phase transformers in electronic equipment. The iron cores are made of grain-oriented cold-rolled silicon steel strips. GB 4596-1984 E-shaped iron cores for three-phase transformers for electronic equipment GB4596-1984 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
E-coresforthree-phasetransformersforuseinelectronicequipmentUDC621.314
GB4596—84
This standard applies to the E-cores for three-phase transformers in electronic equipment (hereinafter referred to as "cores"), which are made of grain-oriented cold-rolled silicon steel strip.
1 Referenced Documents
GB191-73 "Packaging, Storage and Transportation Indicators". GB2421-81 "General Principles of Basic Environmental Testing Regulations for Electrical and Electronic Products". GB2423.1-81 "Basic Environmental Testing Regulations for Electrical and Electronic Products Test A: Low Temperature Test Method". GB2423.2--81 "Basic Environmental Testing Regulations for Electrical and Electronic Products Test B: High Temperature Test Method". GB2423.6-81 "Basic Environmental Testing Regulations for Electrical and Electronic Products Test Eb: Collision Test Method". GB2423.10-81 "Basic environmental test procedures for electrical products Test Fc: Vibration (sinusoidal) test method". GB2828-81 "Batch inspection counting sampling procedures and sampling tables (applicable to continuous batch inspection)". 2 Classification, size and electromagnetic properties
2.1 The iron core is divided into HSD type (for 50Hz) and BSD type (for 400Hz). The structural dimensions of the HSD type iron core are shown in Figure 1 and Table 1; the structural dimensions of the BSD type iron core are shown in Figure 2 and Table 2. Issued by the National Bureau of Standards on July 21, 1984
Implemented on May 1, 1985
* Reference scale.
Core model
HSD10×20×20
HSD10×20×25
HSD10×20×32
HSD10×20×J0
HSD12.5×25×25|| tt||HSD12.5×25×32
HSD12.5×25×40
HSD12.5×25×50
HSD16×32×32
1ISD16×32×10
HSD1 6×32×50
HSD16×32×64
GB4596—84
10-8:15
20-8:2%
32-0:22
12.5*0.70
Not less than
4028:9
65-4:9
72=#:9
96-0:9
Not less than
GB4596—84
Average magnetic path length
Net cross-section of core!
Heavy core
Thickness of steel strip
Core model
HSD20×32×40
HSD20×32×50
HSD20×32×64
HSD20×32×80
HSD25×40×50
HSD25×40×64
HSD25×40×80
HSD25×40×100
HSD32×50×6 4
HSD32×50×80
HSD32×50×100
HSD32×50×125
HSD40×64×80
HSD40×64×100||t t||HSD40×64×125
HSD40×64×160
HSD50×80×100
HSD50×80×125
HSD50×80×160||tt| |HSD50×80×200
GB4596—84
20-8:9
25:8:9
32-8:9
50-0:80
50-0:9||t t||64-8:2
80-8:2
Not trivial
80-8:9
104-8:9
100-6:
130-8:9
150-8: 9
144:8:9
160-:9
180-8:9
205-89
240-8:%
225-8:9
260-8：9
300-8:9
Not more than
GB4596—84
Average magnetic path length
Net cross-sectional area of ​​core column
Core weight
Thickness of silicon steel strip
*Reference size.
Core model
BSD8×12.5×16
BSD8×12.5×20
BSD8×12.5×25
BSD8×12.5×32
BSD10×12.5×20
BSD10 ×12.5×25
BSD10×12.5×32
BSD10×12.5×40
BSD12.5×12.5×25
BSD12.5×12.5×32
BSD12.5×12.5×40||t t||BSD12.5×12.5×50
8:8:15
10:8:45
GB4596--84
12.5*0.43
12:5-8:28
12.5-8:28
12.5*0.70
Not less than
36-2:1
GB4596—84
Not more than
Average magnetic path length
Net cross-sectional area of ​​core column
Core weight
Thickness of silicon steel strip
Core model||tt| |BSD16×16×32
BSD16×16×40
BSD16X16X50
BSD16×16×64
BSD20×20×40
BSD20×20×50
BSD20×20× 64
BSD20×20×80
BSD25×25×50
BSD25×25×64
BSD25×25×80
BSD25×25×100
BSD32×32×64
BS D32×32×80
BSD32×32×100
BSD32×32×125
BSD40×40×80
BSD40×40×100
BSD40×40×125
BSD40×40 ×160
BSD50×50×100
BSD50×50×125
BSD50×50×160
BSD50×50×200
GB4596—84
20-8:95
25= 8:
32 8:2
40 8:
50 8:98
20:8:%
25-8:2
40 8:2
50 8:9
Not less than
7228:9
90±:9
100-8:9
130-8:9
180-8:
Not greater than
GB4596—84
Average magnetic path length
Net cross-sectional area of ​​core column
Heaviest core
Thickness of silicon steel strip
GB4596-84
Note to Table 1 and Table 2: ①When calculating the net cross-sectional area (S) of the core column, the space factor (K. ) According to the thickness of silicon steel strip, the following values ​​are taken: when the thickness of silicon steel strip is 0.35mm, K. is taken as 0.92; when the thickness of silicon steel strip is 0.20mm, Kc is taken as 0.89; when the thickness of silicon steel strip is 0.10mm, K. is taken as 0.85. ②When calculating the weight of the iron core (G.), the weight of the coating between the sheets is not included. ③"K" is the gap between the cut end faces of a pair of iron cores. 2.2 The iron core material can be selected from various grades of grain-oriented silicon steel strips that meet the requirements, Table 3
Iron core type
The operating temperature range of the iron core is divided into two levels, see Table 4. 2.3
The selection of its thickness is recommended according to Table 3.
Material thickness mm
0.1, 0.2
Temperature range
55~+125℃
55~+175℃
2.4The electromagnetic properties of the iron core are divided into two levels, I and II. The electromagnetic properties of the HSD type iron core are shown in Table 5, and the electromagnetic properties of the BSD type iron core are shown in Tables 6 and 7.
Test coil
Core model
HSD10×20×20
HSD10×20×25
HSD10×20×32
HSD10×20×40
HSD12.5×25×25
HSD12.5×25×32
HSD12.5×25×40
HSI)12.5×25×50
Wire specification
Test Test voltage
Magnetic flux density
No-load current
No-load loss
Not measured with single coil
Not measured with single coil
Core model
HSD16×32×32
HSD16×32×40
HSD16×32×50
HSD16×32×64
HSD20×32×40
HSD20×32×50
HSD20×3 2×64
HSD20×32×80
HSD25×40×50
HSD25×40×64
HSD25×40×80
HSD25×40×100| |tt||HSD32×50×64
HSD32×50×80
HSD32×50×100
HSD32×50×125
HSD40×64×80||tt| |HSD40×64×100
HSD40×64×125
HSD40×64×160
HSD50×80×100
HSD50×80×125bzxZ.net
HSD50 × 80 × 160 | | tt | | HSD50 × 80 × 200 | 00
1.10×3.00
GB4596—84
Continued Table 5
Test voltage
Magnetic flux density
No-load current
No-load loss
Not tested with single coil
Core model*
BSD8×12.5×16
BSD8×12.5×20
BSD8×12.5×25
BSD8×12.5×32
BSD10×12.5×20
BSD10×12.5×25
BSD10×12.5×32
BSD10×12.5×40
BSD12.5×12.5×25
BSD12.5×12.5×32
BSD12.5×12.5×40
BSD12.5×12.5×50
BSD16×16×32
BSD16 ×16×10
BSD16×16×50
BSD16×16×64
BSD20×20×10
BSD20×20×50
BSD20×20×61
BSD20×20×80
BSD25×25×50
BSD25×25×61
BSD25×25×80
BSD25×25×100||tt| |BSD32×32×61
BSD32×32×81
BSD32×32×100
BSD32×32×125
BSD0X40×80
BSD10X40×100
BSD10×10×125
BSD10×40×160
BSD50×50×100
BSD:50×50×125
BSD50×50×160
BSD50×50×200
Test coil
*The thickness of silicon steel strip is \.2mm.
Wire specification
1.(00)×2.80
1.00×2.80
1.00×3.15
1.00×3.15
1.00×3.15
1.00×3.15
1.00×3.15
1.60×4.000
1.60×4.00
GB4596-84
Test voltage
Magnetic flux density
No-load current
No-load loss00
GB4596—84
Continued Table 5
Test voltage
Magnetic flux density
No-load current
No-load loss
Not tested with single coil
Core model*
BSD8×12.5×16
BSD8×12.5×20
BSD8×12.5×25
BSD8×12.5×32
BSD10×12.5× 20
BSD10×12.5×25
BSD10×12.5×32
BSD10×12.5×40
BSD12.5×12.5×25
BSD 12.5×12.5×32
BSD12.5×12.5×40
BSD12.5×12.5×50
BSD16×16×32
BSD16×16×10|| tt||BSD16×16×50
BSD16×16×64
BSD20×20×10
BSD20×20×50
BSD20×20×61
BSD20×20×80
BSD25×25×50
BSD25×25×61
BSD25×25×80
BSD25×25×100
BSD 32×32×61
BSD32×32×81
BSD32×32×100
BSD32×32×125
BSD0X40×80
BSD10X40×100
BSD10×10×125
BSD10×40×160
BSD50×50×100
BSD:50×50×125
BSD50×50×160
BSD50×50×200
Test coil
*The thickness of silicon steel strip is \.2mm.
Wire specification
1.(00)×2.80
1.00×2.80
1.00×3.15
1.00×3.15
1.00×3.15
1.00×3.15
1.00×3.15
1.60×4.000
1.60×4.00
GB4596-84
Test voltage
Magnetic flux density
No-load current
No-load loss00
GB4596—84
Continued Table 5
Test voltage
Magnetic flux density
No-load current
No-load loss
Not tested with single coil
Core model*
BSD8×12.5×16
BSD8×12.5×20
BSD8×12.5×25
BSD8×12.5×32
BSD10×12.5× 20
BSD10×12.5×25
BSD10×12.5×32
BSD10×12.5×40
BSD12.5×12.5×25
BSD 12.5×12.5×32
BSD12.5×12.5×40
BSD12.5×12.5×50
BSD16×16×32
BSD16×16×10|| tt||BSD16×16×50
BSD16×16×64
BSD20×20×10
BSD20×20×50
BSD20×20×61
BSD20×20×80
BSD25×25×50
BSD25×25×61
BSD25×25×80
BSD25×25×100
BSD 32×32×61
BSD32×32×81
BSD32×32×100
BSD32×32×125
BSD0X40×80
BSD10X40×100
BSD10×10×125
BSD10×40×160
BSD50×50×100
BSD:50×50×125
BSD50×50×160
BSD50×50×200
Test coil
*The thickness of silicon steel strip is \.2mm.
Wire specification
1.(00)×2.80
1.00×2.80
1.00×3.15
1.00×3.15
1.00×3.15
1.00×3.15
1.00×3.15
1.60×4.000
1.60×4.00
GB4596-84
Test voltage
Magnetic flux density
No-load current
No-load loss
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