Quality Inspection Report of DXWD-175 Water-cooled Electromagnet

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DXWD-175 Water-cooled Electromagnet left view of DXWD-175 Water-cooled Electromagnet pole of DXWD-175 Water-cooled Electromagnet

 

Overall Dimensions: 1095mm(L) x 1000mm(W) x 1195mm(H)

Coil spacing: 120/60mm
Pole diameter: 170mm

Pole face diameter: 100mm

Air gap range: 0-120mm

Weight: 1342kg

 

DXWD-175 Water-cooled Electromagnet with rotating control

 

Performance test report
 Introduction
    1. Test purpose
Through the analysis of the test results, the evaluation of the product performance is obtained;
Evaluate whether the test product meets the technical requirements;
Provide reference data for product design and after-sales service, and provide a strong basis for leaving the factory.
    2. Basic information
 Product Name:
Water-cooled Electromagnet		 Product model: DXWD-175
Test time: Nov. 03, 2023
    3. Testing environment
The detection environment is closer to the actual environmental conditions used by the user, including factors such as lead wire length and ambient temperature. The time is selected in the time interval where the fluctuation of the geomagnetic field is small. Before the test, the instruments required for the test were turned on and warmed up in advance and the measurement environment was recorded, as shown in Table 1.
Measurement environment
Environment temperature Product initial temperature Lead length Environmental magnetic field
17.0℃ 17.0℃ 4M 0~30000nT
Table 1 Measurement environment data
 
Magnetic field parameter test
    1. Using the device
DX-F2031 power supply
DX-180 Gauss Meter
    2. Magnetic field measurement
This product uses the following measurement methods:
Fixed-point measurement: measure the magnetic field at the target point

 

Magnetic field strength of electromagnet
Air Gap Display current (A) Display voltage Voltage (V) Magnetic field
strength（T）
10mmGap 5 - 1.475
10mmGap 10 - 2.289
10mmGap 15 - 2.442
10mmGap 20 - 2.535
10mmGap 25 - 2.591
10mmGap 30 - 2.629
20mmGap 5 - 0.779
20mmGap 10 - 1.503
20mmGap 15 - 1.955
20mmGap 20 - 2.159
20mmGap 25 - 2.254
20mmGap 30 - 2.313
30mmGap 5 - 0.522
30mmGap 10 - 1.025
30mmGap 15 - 1.451
30mmGap 20 - 1.699
30mmGap 25 - 1.861
30mmGap 30 - 1.971
40mmGap 5 - 0.394
40mmGap 10 - 0.778
40mmGap 15 - 1.134
40mmGap 20 - 1.379
40mmGap 25 - 1.545
40mmGap 30 - 1.661
50mmGap 5 - 0.315
50mmGap 10 - 0.625
50mmGap 15 - 0.919
50mmGap 20 - 1.152
50mmGap 25 - 1.312
50mmGap 30 - 1.429
60mmGap 5 - 0.261
60mmGap 10 - 0.517
60mmGap 15 - 0.767
60mmGap 20 - 0.982
60mmGap 25 - 1.135
60mmGap 30 - 1.252
70mmGap 5 - 0.222
70mmGap 10 - 0.442
70mmGap 15 - 0.656
70mmGap 20 - 0.852
70mmGap 25 - 0.995
70mmGap 30 - 1.108
80mmGap 5 - 0.193
80mmGap 10 - 0.384
80mmGap 15 - 0.571
80mmGap 20 - 0.747
80mmGap 25 - 0.882
80mmGap 30 - 0.988
90mmGap 5 - 0.169
90mmGap 10 - 0.338
90mmGap 15 - 0.502
90mmGap 20 - 0.661
90mmGap 25 - 0.789
90mmGap 30 - 0.891
100mmGap 5 - 0.153
100mmGap 10 - 0.301
100mmGap 15 - 0.448
100mmGap 20 - 0.589
100mmGap 25 - 0.712
100mmGap 30 - 0.809
110mmGap 5 - 0.137
110mmGap 10 - 0.272
110mmGap 15 - 0.406
110mmGap 20 - 0.535
110mmGap 25 - 0.651
110mmGap 30 - 0.743
120mmGap 5 - 0.124
120mmGap 10 - 0.248
120mmGap 15 - 0.369
120mmGap 20 - 0.486
120mmGap 25 - 0.595
120mmGap 30 - 0.683
Table 2 Magnetic field strength data of Electromagnet
Magnetic field strength of coil
Measuring frequency Display current (A) Display voltage Voltage (V) Magnetic field
strength（Gs）
1KHz 10 20 20.54
Table 3 Magnetic field strength data of Coil

 

Electrical parameter test
    1. Using equipment
Digital multimeter
Impedance analyzer
    2. Test method
The digital instrument with bridge circuit and voltammetry is used for measurement. The measurement results are shown in the table below.
Resistance R measurement
No. Product temperature Measuring resistance ResistanceR@20℃ ResistanceR@85℃
Electromagnet 17.0℃ 5.320Ω 5.394Ω 7.007Ω
Coil 1 17.0℃ 0.165Ω 0.167Ω 0.217Ω
Coil 2 17.0℃ 0.163Ω 0.165Ω 0.215Ω
Table 4 Resistance R data

 

Coil 1 X-axis Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 136.599u  1.00000k  195.804u 20
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
0.21361 20 0.89873  1.00000k
Table 5 Coil 1 inductance Ls and reactance Z data
Coil 1 Inductance Ls, reactance Z-scan measurement
POINTS FREQ[Hz] Ls Z  POINTS FREQ[Hz] Ls Z 
1 20  195.804u 0.21361 102 514.9  139.947u 0.51333
2 24.9  186.191u 0.21497 103 519.8  139.899u 0.51714
3 29.8  178.796u 0.21633 104 524.7  139.854u 0.52092
4 34.7  173.089u 0.21809 105 529.6  139.808u 0.52472
5 39.6  169.158u 0.21977 106 534.5  139.767u 0.52854
6 44.5  165.516u 0.22164 107 539.4  139.709u 0.5323
7 49.4  162.880u 0.22366 108 544.3  139.677u 0.53613
8 54.3  160.630u 0.22494 109 549.2  139.634u 0.53994
9 59.2  159.012u 0.22619 110 554.1  139.590u 0.54372
10 64.1  157.257u 0.22773 111 559  139.539u 0.54756
11 69  155.917u 0.22927 112 563.9  139.500u 0.55136
12 73.9  154.694u 0.23086 113 568.8  139.444u 0.55515
13 78.8  153.685u 0.23243 114 573.7  139.407u 0.559
14 83.7  152.893u 0.23413 115 578.6  139.362u 0.56282
15 88.6  152.266u 0.23582 116 583.5  139.314u 0.56664
16 93.5  151.595u 0.23768 117 588.4  139.271u 0.57046
17 98.4  151.023u 0.23951 118 593.3  139.229u 0.57428
18 103.3  150.517u 0.24147 119 598.2  139.191u 0.57813
19 108.2  150.024u 0.24333 120 603.1  139.128u 0.58192
20 113.1  149.743u 0.24557 121 608  139.098u 0.58578
21 118  149.190u 0.2476 122 612.9  139.060u 0.58965
22 122.9  148.804u 0.2497 123 617.8  139.013u 0.59348
23 127.8  148.477u 0.25194 124 622.7  138.975u 0.59734
24 132.7  148.131u 0.25418 125 627.6  138.929u 0.60118
25 137.6  147.878u 0.2565 126 632.5  138.882u 0.605
26 142.5  147.579u 0.25881 127 637.4  138.845u 0.60888
27 147.4  147.341u 0.26126 128 642.3  138.799u 0.61271
28 152.3  147.078u 0.26371 129 647.2  138.760u 0.61658
29 157.2  146.848u 0.26622 130 652.1  138.723u 0.62045
30 162.1  146.684u 0.26884 131 657  138.687u 0.62434
31 167  146.471u 0.27145 132 661.9  138.646u 0.62819
32 171.9  146.307u 0.27416 133 666.8  138.606u 0.63206
33 176.8  146.125u 0.27684 134 671.7  138.573u 0.63595
34 181.7  145.942u 0.27961 135 676.6  138.524u 0.63977
35 186.6  145.765u 0.28238 136 681.5  138.492u 0.64369
36 191.5  145.603u 0.28519 137 686.4  138.452u 0.64757
37 196.4  145.456u 0.28806 138 691.3  138.415u 0.65143
38 201.3  145.314u 0.29092 139 696.2  138.373u 0.65531
39 206.2  145.191u 0.29386 140 701.1  138.335u 0.65919
40 211.1  145.053u 0.2968 141 706  138.294u 0.66302
41 216  144.890u 0.29978 142 710.9  138.267u 0.66696
42 220.9  144.755u 0.30279 143 715.8  138.230u 0.67085
43 225.8  144.623u 0.3058 144 720.7  138.199u 0.67475
44 230.7  144.521u 0.30892 145 725.6  138.151u 0.67859
45 235.6  144.407u 0.31196 146 730.5  138.126u 0.68253
46 240.5  144.282u 0.31511 147 735.4  138.081u 0.68639
47 245.4  144.168u 0.31828 148 740.3  138.059u 0.69034
48 250.3  144.090u 0.32149 149 745.2  138.022u 0.69422
49 255.2  143.895u 0.32456 150 750.1  137.992u 0.69815
50 260.1  143.792u 0.32777 151 755  137.948u 0.70199
51 265  143.670u 0.331 152 759.9  137.927u 0.70596
52 269.9  143.573u 0.3343 153 764.8  137.889u 0.70983
53 274.8  143.483u 0.33755 154 769.7  137.856u 0.71374
54 279.7  143.398u 0.34088 155 774.6  137.826u 0.71764
55 284.6  143.307u 0.34422 156 779.5  137.794u 0.72156
56 289.5  143.155u 0.34751 157 784.4  137.763u 0.72548
57 294.4  143.115u 0.35097 158 789.3  137.734u 0.7294
58 299.3  143.016u 0.35425 159 794.2  137.701u 0.73331
59 304.2  142.928u 0.35764 160 799.1  137.666u 0.73721
60 309.1  142.859u 0.36104 161 804  137.634u 0.74111
61 314  142.716u 0.36447 162 808.9  137.609u 0.74505
62 318.9  142.668u 0.36794 163 813.8  137.571u 0.74894
63 323.8  142.571u 0.37137 164 818.7  137.535u 0.75283
64 328.7  142.496u 0.37485 165 823.6  137.514u 0.75679
65 333.6  142.408u 0.37831 166 828.5  137.474u 0.76066
66 338.5  142.323u 0.38177 167 833.4  137.438u 0.76457
67 343.4  142.253u 0.38531 168 838.3  137.417u 0.76852
68 348.3  142.177u 0.38882 169 843.2  137.383u 0.77242
69 353.2  142.092u 0.39236 170 848.1  137.352u 0.77634
70 358.1  142.022u 0.39589 171 853  137.319u 0.78024
71 363  141.929u 0.39939 172 857.9  137.290u 0.78418
72 367.9  141.844u 0.40294 173 862.8  137.253u 0.78805
73 372.8  141.769u 0.4065 174 867.7  137.224u 0.79198
74 377.7  141.704u 0.4101 175 872.6  137.215u 0.79601
75 382.6  141.632u 0.41366 176 877.5  137.181u 0.79991
76 387.5  141.558u 0.41727 177 882.4  137.157u 0.80383
77 392.4  141.490u 0.42089 178 887.3  137.139u 0.80786
78 397.3  141.416u 0.4245 179 892.2  137.109u 0.81175
79 402.2  141.357u 0.42815 180 897.1  137.074u 0.81563
80 407.1  141.286u 0.43179 181 902  137.064u 0.81968
81 412  141.197u 0.43536 182 906.9  137.026u 0.82353
82 416.9  141.135u 0.43904 183 911.8  137.016u 0.82753
83 421.8  141.058u 0.44267 184 916.7  136.984u 0.83148
84 426.7  141.007u 0.44636 185 921.6  136.966u 0.83546
85 431.6  140.933u 0.45001 186 926.5  136.941u 0.83941
86 436.5  140.881u 0.4537 187 931.4  136.913u 0.84333
87 441.4  140.824u 0.45741 188 936.3  136.888u 0.84729
88 446.3  140.751u 0.46108 189 941.2  136.865u 0.85125
89 451.2  140.681u 0.46476 190 946.1  136.851u 0.85527
90 456.1  140.628u 0.46849 191 951  136.816u 0.85915
91 461  140.569u 0.4722 192 955.9  136.795u 0.86313
92 465.9  140.509u 0.47588 193 960.8  136.786u 0.8671
93 470.8  140.446u 0.47963 194 965.7  136.768u 0.87108
94 475.7  140.389u 0.48333 195 970.6  136.745u 0.87504
95 480.6  140.334u 0.48709 196 975.5  136.722u 0.879
96 485.5  140.280u 0.49081 197 980.4  136.695u 0.88293
97 490.4  140.206u 0.49453 198 985.3  136.673u 0.88689
98 495.3  140.166u 0.4983 199 990.2  136.651u 0.89085
99 500.2  140.123u 0.50209 200 995.1  136.623u 0.89477
100 505.1  140.050u 0.50578 201  1.00000k  136.599u 0.89873
101 510  140.003u 0.50956 　 　 　 　
Table 6 Coil 1 Detailed frequency data of inductance Ls and reactance Z

 

Coil 2 X-axis Inductance Ls, reactance Z measurement (test level 5V)
Ls MIN[H] FREQ[Hz] Ls MAX[H] FREQ[Hz]
 135.740u  1.00000k  197.534u 20
Z  MIN[Ω] FREQ[Hz] Z  MAX[Ω] FREQ[Hz]
0.21395 20 0.89508  1.00000k
Table 7 Coil 2 inductance Ls and reactance Z data
Coil 2 Inductance Ls, reactance Z-scan measurement
POINTS FREQ[Hz] Ls Z  POINTS FREQ[Hz] Ls Z 
1 20  197.534u 0.21395 102 514.9  139.529u 0.51348
2 24.9  187.571u 0.21534 103 519.8  139.473u 0.51723
3 29.8  180.259u 0.21676 104 524.7  139.411u 0.52097
4 34.7  174.497u 0.21847 105 529.6  139.363u 0.52475
5 39.6  169.941u 0.22012 106 534.5  139.298u 0.52848
6 44.5  166.016u 0.22207 107 539.4  139.252u 0.53228
7 49.4  163.193u 0.22395 108 544.3  139.235u 0.53613
8 54.3  161.184u 0.22539 109 549.2  139.180u 0.53989
9 59.2  159.314u 0.22676 110 554.1  139.114u 0.54364
10 64.1  157.726u 0.22818 111 559  139.074u 0.54743
11 69  156.246u 0.2297 112 563.9  139.008u 0.55118
12 73.9  155.002u 0.23129 113 568.8  138.957u 0.55496
13 78.8  154.117u 0.23292 114 573.7  138.911u 0.55877
14 83.7  153.156u 0.23461 115 578.6  138.859u 0.56256
15 88.6  152.199u 0.23636 116 583.5  138.809u 0.56635
16 93.5  151.639u 0.2381 117 588.4  138.742u 0.57008
17 98.4  151.184u 0.23998 118 593.3  138.706u 0.57392
18 103.3  150.668u 0.2419 119 598.2  138.654u 0.57772
19 108.2  150.209u 0.24392 120 603.1  138.600u 0.5815
20 113.1  149.745u 0.24606 121 608  138.542u 0.5853
21 118  149.298u 0.24812 122 612.9  138.505u 0.58911
22 122.9  148.886u 0.25024 123 617.8  138.458u 0.59295
23 127.8  148.536u 0.25247 124 622.7  138.416u 0.59676
24 132.7  148.202u 0.25473 125 627.6  138.363u 0.60055
25 137.6  147.924u 0.25703 126 632.5  138.317u 0.60439
26 142.5  147.633u 0.2594 127 637.4  138.275u 0.60822
27 147.4  147.352u 0.26179 128 642.3  138.229u 0.61205
28 152.3  147.129u 0.2643 129 647.2  138.188u 0.61588
29 157.2  146.919u 0.26684 130 652.1  138.139u 0.61971
30 162.1  146.710u 0.26942 131 657  138.094u 0.62352
31 167  146.487u 0.27207 132 661.9  138.051u 0.62735
32 171.9  146.347u 0.27476 133 666.8  138.006u 0.63119
33 176.8  146.157u 0.2775 134 671.7  137.962u 0.63502
34 181.7  145.958u 0.2802 135 676.6  137.917u 0.63884
35 186.6  145.800u 0.28303 136 681.5  137.870u 0.64268
36 191.5  145.628u 0.28585 137 686.4  137.831u 0.64654
37 196.4  145.473u 0.28873 138 691.3  137.788u 0.65038
38 201.3  145.320u 0.29164 139 696.2  137.749u 0.65422
39 206.2  145.164u 0.29453 140 701.1  137.694u 0.65802
40 211.1  145.024u 0.2975 141 706  137.657u 0.66188
41 216  144.892u 0.30046 142 710.9  137.621u 0.66576
42 220.9  144.751u 0.30352 143 715.8  137.582u 0.66962
43 225.8  144.590u 0.30653 144 720.7  137.546u 0.67348
44 230.7  144.503u 0.30966 145 725.6  137.499u 0.6773
45 235.6  144.354u 0.31273 146 730.5  137.461u 0.68118
46 240.5  144.256u 0.31587 147 735.4  137.435u 0.68507
47 245.4  144.076u 0.31897 148 740.3  137.385u 0.68888
48 250.3  143.924u 0.32216 149 745.2  137.340u 0.69272
49 255.2  143.810u 0.32531 150 750.1  137.312u 0.69664
50 260.1  143.682u 0.32847 151 755  137.279u 0.70053
51 265  143.566u 0.33174 152 759.9  137.226u 0.70431
52 269.9  143.478u 0.33505 153 764.8  137.197u 0.70821
53 274.8  143.394u 0.33835 154 769.7  137.160u 0.71208
54 279.7  143.297u 0.34169 155 774.6  137.120u 0.71592
55 284.6  143.198u 0.34501 156 779.5  137.082u 0.71979
56 289.5  143.087u 0.34834 157 784.4  137.052u 0.72368
57 294.4  143.001u 0.35171 158 789.3  137.011u 0.72754
58 299.3  142.964u 0.3552 159 794.2  136.990u 0.73148
59 304.2  142.817u 0.35846 160 799.1  136.949u 0.73531
60 309.1  142.729u 0.36185 161 804  136.907u 0.73916
61 314  142.603u 0.36526 162 808.9  136.878u 0.74307
62 318.9  142.533u 0.36872 163 813.8  136.835u 0.74691
63 323.8  142.438u 0.37218 164 818.7  136.795u 0.75074
64 328.7  142.336u 0.37559 165 823.6  136.767u 0.75464
65 333.6  142.255u 0.37908 166 828.5  136.726u 0.7585
66 338.5  142.147u 0.38253 167 833.4  136.687u 0.76236
67 343.4  142.074u 0.38606 168 838.3  136.647u 0.7662
68 348.3  141.975u 0.38952 169 843.2  136.611u 0.77006
69 353.2  141.897u 0.39304 170 848.1  136.581u 0.77396
70 358.1  141.811u 0.39657 171 853  136.552u 0.77787
71 363  141.726u 0.40012 172 857.9  136.517u 0.78176
72 367.9  141.631u 0.40363 173 862.8  136.490u 0.78566
73 372.8  141.561u 0.40723 174 867.7  136.456u 0.78953
74 377.7  141.478u 0.41078 175 872.6  136.419u 0.79337
75 382.6  141.378u 0.41431 176 877.5  136.384u 0.79725
76 387.5  141.312u 0.41792 177 882.4  136.369u 0.80122
77 392.4  141.237u 0.42152 178 887.3  136.335u 0.8051
78 397.3  141.143u 0.42507 179 892.2  136.319u 0.80907
79 402.2  141.070u 0.42871 180 897.1  136.284u 0.81292
80 407.1  140.996u 0.43231 181 902  136.263u 0.81688
81 412  140.920u 0.43594 182 906.9  136.234u 0.82078
82 416.9  140.851u 0.43961 183 911.8  136.199u 0.82465
83 421.8  140.779u 0.44325 184 916.7  136.172u 0.82856
84 426.7  140.707u 0.44689 185 921.6  136.157u 0.83255
85 431.6  140.631u 0.45053 186 926.5  136.118u 0.8364
86 436.5  140.570u 0.45423 187 931.4  136.098u 0.84032
87 441.4  140.491u 0.45785 188 936.3  136.072u 0.84426
88 446.3  140.422u 0.46154 189 941.2  136.041u 0.84816
89 451.2  140.350u 0.46519 190 946.1  136.019u 0.85208
90 456.1  140.286u 0.46888 191 951  135.984u 0.85594
91 461  140.221u 0.47258 192 955.9  135.965u 0.8599
92 465.9  140.150u 0.47625 193 960.8  135.966u 0.86389
93 470.8  140.071u 0.47993 194 965.7  135.932u 0.86777
94 475.7  140.011u 0.48364 195 970.6  135.906u 0.87168
95 480.6  139.937u 0.48733 196 975.5  135.877u 0.87557
96 485.5  139.876u 0.49107 197 980.4  135.848u 0.87947
97 490.4  139.824u 0.49479 198 985.3  135.825u 0.8834
98 495.3  139.739u 0.49846 199 990.2  135.800u 0.88731
99 500.2  139.703u 0.50225 200 995.1  135.767u 0.89119
100 505.1  139.619u 0.50593 201  1.00000k  135.740u 0.89508
101 510  139.569u 0.50969 　 　 　 　
Table 8 Coil 2 Detailed frequency data of inductance Ls and reactance Z

 

    3) Test method
This product uses the following measurement methods:
  Using magnetic field temperature rise measurement: given the limit working time and maximum temperature under the target magnetic field current required by the user;
Maximum current temperature rise measurement: Measure the ultimate working time and maximum temperature under the maximum safe current that the product can withstand;
Measure the data on temperature, time and current of the entire coil. The measurement results are shown in the table below.
Temperature test
Current[A] Working time[min] Initial temperature[℃] End temperature[℃]
25 60 21.9 72.1
Note The temperature control switch turns off the power when the magnet reaches 72.7°C.
Table 9 Relationship data between temperature, working time and current

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Dexinmag® • 2024

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