Kesilapan biasa kilang kaedah anti-statik
1. Tiada instrumen ujian produk anti-statik
The most common mistake is that many companies purchase a lot of anti-static products, but do not purchase some commonly used anti-static product testing instruments. We know that each product has a certain period of use, and the quality is divided into good and bad. If there are no commonly used testing instruments, we will not know whether the product is damaged or not and the quality is good. In this way, the anti-static effect will not be achieved.
2. Sambungan wayar tanah tidak baik
a. The anti-static system must have an independent and reliable grounding device, the grounding resistance should generally be less than 10Ω, and the burying and detection methods should meet the requirements of GBJ97.
b. The anti-static ground wire shall not be connected to the neutral wire of the power supply and shall not be shared with the lightning protection ground wire. Because lightning strikes and other phenomena will affect the performance of the product and personal safety through the circuit.
c. Gunakan sistem lima wayar tiga fasa untuk bekalan kuasa, dan wayar pembumiannya boleh digunakan sebagai wayar pembumian anti-statik (tetapi wayar neutral dan wayar pembumian tidak boleh bercampur).
d. The cross-sectional area of the grounding trunk line should not be less than 10mm2; the cross-sectional area of the branch trunk line should not be less than 6mm2; the grounding wire of the equipment and the workbench should be multi-strand plastic-coated conductors with a cross-sectional area of not less than 1.5mm2, and the color of the grounding wire should be yellow-green wire appropriate.
e. Kaedah penyambungan talian utama pembumian hendaklah memateri.
f. Terminal sambungan peralatan anti-statik hendaklah memastikan sentuhan yang boleh dipercayai, mudah dipasang dan dibuka, dan membenarkan penggunaan pelbagai penyambung jenis klip, seperti klip ikan, soket palam, dsb. g. Tempat kerja dengan keperluan rintangan pembumian yang tinggi harus memasang alat pemantauan dan penggera sistem pembumian, yang boleh memantau sama ada wayar pembumian bersentuhan baik dengan tanah pada bila-bila masa.
3. Anggap produk anti statik sebagai produk biasa
Banyak syarikat menggunakan produk anti-statik sebagai produk biasa, memikirkan bahawa produk itu boleh terus digunakan tanpa ubah bentuk atau pecah. Sebenarnya, ini adalah salah faham. Sebagai contoh, tali pergelangan tangan anti-statik hanya boleh digunakan selama beberapa bulan. Selepas tempoh penggunaan, penampilan mungkin tidak rosak, tetapi apabila diuji, sering didapati bahawa tali pergelangan tangan patah.
4. Tidak memberi perhatian kepada stokin dan insoles
Usually when people wear anti-static shoes, they also wear socks or insoles. For people with sweaty feet, these socks and insoles will also conduct static electricity. However, some people whose feet are not easy to sweat should wear some non-anti-static shoes. And pad insole, the socks and insoles can not conduct static electricity, so the static electricity of the human body can not be introduced into the earth through the shoes. Therefore, a "human body comprehensive resistance detector" is placed at the entrance of the computer room or workshop, which can quickly and accurately detect those who wear unqualified anti-static shoes, socks and insoles. It is recommended that workers wear anti-static slippers in summer and do not wear thongs. In winter, they can wear cotton socks but not nylon socks.
5. Hanya pakai kasut anti statik dan tiada pakaian anti statik
Selain memakai kasut anti statik, orang ramai juga harus memakai pakaian anti statik untuk mengawal elektrik statik badan manusia dengan lebih baik. Kerana pakaian juga boleh membawa jumlah elektrik statik yang tinggi, terutamanya kebanyakan pakaian semasa adalah gentian kimia, yang boleh menjana beribu-ribu volt elektrik statik.
6. Only wear anti-static clothing and no anti-static shoes
Eksperimen telah menunjukkan bahawa jika orang hanya memakai pakaian kerja anti-statik tanpa kasut anti-statik dan tidak mempunyai tanah anti-statik yang baik, kesan anti-statik adalah amat lemah.
7. Pakai pakaian dan kasut anti statik tetapi tiada lantai anti statik dan tiada tali pergelangan tangan anti statik
Kita tahu bahawa elektrik statik badan manusia secara amnya diarahkan ke lantai anti-statik melalui kasut anti-statik, atau ke dalam tanah melalui tali pergelangan tangan. Sebaik-baiknya syarikat dengan syarat mempunyai lantai anti-statik dan tali pergelangan tangan anti-statik, dan syarikat tanpa syarat sekurang-kurangnya harus mempunyai tali pergelangan tangan anti-statik.
8. Penggunaan tali pergelangan tangan yang tidak betul
9. Anti-static with a cordless wrist strap
The theory of the cordless wristband is to use the principle of corona discharge to dissipate a part of static electricity. Corona discharge is also called tip discharge. After the conductor itself is charged, it usually requires a voltage of more than 1500V, and its tip will discharge to the air. Dissipate static electricity, but the static voltage required for the cordless wristband to dissipate static electricity is too high, which is not suitable for the electronics industry, because there are not many electronic components that can withstand high voltages above 1500V. So we do not recommend using wireless wristbands.