While the basic protection components, such as Gas Discharge Tubes (GDT), Metal Oxide Varistors (MOV) (typically Zinc Oxide), and Silicon Avalanche Diodes (SAD) or Surge Diodes (Transzorbs), are always connected in parallel, all data line protectors are connected in series to the load. The maximum load current through data line SPDs is set by the series component, which is typically a resistor or inductor.
The tracks on a printed circuit board (PCB) and resistors are typically used for high voltage power supply applications, while inductors are typically used for low-frequency applications.
Criteria for choosing shift potential dividers in power lines: You should think about the following factors while making your choice of SPDs: The equipment's voltage withstanding capacity (Uw) should be used to determine the appropriate voltage protection level (Up), with Up being lower than Uw in all cases. Normal Discharge Current, Maximum Current During Discharg, Voltage spikes (for Class I SPDs only), In accordance with the standards of International Standardization and the International Electrotechnical Commission, 61643, Low-voltage surge protectors, part 11: low-voltage power system surge protectors, Standards and procedures for testing Class 1 (Zone 0-1), Class 2 (Zone 1-), and Class 3 (Zone 2-) applications.
Speed of reaction: In addition, SPDs for hi voltage power supply and data lines have different selection criteria and operate under different rules than fuses and MCBs. Communication, instrumentation, voice, data, Ethernet, RS 485, RS 422, etc. are all examples of data line SPDs.
Most
AC power low-voltage applications www.hvmtech.com,
such as Main DB and Sub DB, have their power line protectors linked in parallel
with the load so that they may be utilized without interrupting the flow of
current. When referring to voltage, "low voltage" refers to an alternating
current (AC) RMS of 1V to 1000V, or a direct current (DC) of up to 1500V.