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10.2.4 Avaliação geral para o varistor degradado
Tab.10.24 -
Verificação geral da estabilidade dos parâmetros de um varistor degradado.
VARISTOR DEGRADO
Parâmetro U
m
a
β
Parâmetro U
m
a
β
1,6241 283,3630 520,4050 1,6272 288,8100 530,6630
1,6170 273,9050 503,4310 1,6247 285,2870 524,3080
1,6256 285,3330 523,9270 1,6253 286,0730 525,7270
1,6246 284,0290 521,5970 1,6266 287,9400 529,0970
0 H
1,6251 284,6890 522,7770
1% 5H
0º
1,6249 285,5830 524,8430
Desvio Padrão 0,0004 0,2641 0,5818 Desvio Padrão 0,0011 1,5508 2,7977
1,6261 287,2600 527,8700 1,6249 286,1820 526,2270
1,6270 288,5570 530,2090 1,6266 288,4820 530,2910
1,6244 284,8040 523,4360 1,6261 287,7820 529,0080
1,6276 289,4130 531,7500 1,6262 288,0350 529,5350
1% 3H
180º
1,6278 289,6800 532,2330
2% 5H
0º
1,6258 287,3180 528,1660
Desvio Padrão 0,0014 1,9922 3,5938 Desvio Padrão 0,0006 0,8778 1,5580
1,6250 286,2710 526,2670 1,6275 290,5710 534,3630
1,6257 287,1900 527,9350 1,6258 288,2250 530,2990
1,6259 287,5020 528,5010 1,6265 289,2220 531,9820
1,6255 286,8880 527,3870 1,6260 288,3510 530,3600
2% 3H
180º
1,6249 286,2100 526,3480
3% 5H
0º
1,6272 290,0700 533,4140
Desvio Padrão 0,0004 0,5657 0,9780 Desvio Padrão 0,0007 1,0332 1,8119
1,6265 287,0670 531,5880 1,6262 289,5800 533,0230
1,6277 290,7290 534,6560 1,6292 294,0120 540,9700
1,6291 293,0000 538,7430 1,6287 293,1310 539,2620
1,6252 287,3640 528,6340 1,6280 292,2490 537,8660
3% 3H
180º
1,6279 291,3530 535,9510
4% 5H
0º
1,6274 291,3530 536,2750
Desvio Padrão 0,0015 2,5916 3,9150 Desvio Padrão 0,0012 1,7061 3,0340
1,6295 294,5500 541,9640 1,6270 292,0410 538,2410
1,6262 289,6410 533,2060 1,6272 292,4300 537,9360
1,6289 293,6580 540,4050 1,6263 290,7090 535,6440
1,6274 291,3920 536,3430 1,6272 292,1730 538,2910
4% 3H
180º
1,6263 289,7090 533,2920
5% 5H
0º
1,6260 290,3270 534,8960
Desvio Padrão 0,0015 2,2480 4,0250 Desvio Padrão 0,0006 0,9494 1,6084
1,6266 291,1340 536,3940
1,6268 291,6000 537,3060 Desvio Padrão de U
m
= 0,0018 (0,11%)
1,6270 291,9950 538,1050 Valor médio de U
m
= 1,6263
1,6276 292,8190 539,4800 Desvio Padrão de a = 3,4293 (1,19%)
5% 3H
180º
1,6256 289,7570 533,8900 Valor médio de a = 288,8509
Desvio Padrão 0,0007 1,1357 2,0915
Desvio Padrão de
β
= 6,6281 (1,25%)
Valor médio de
β
= 531,3585