TBU-LAB1 Bourns Inc., TBU-LAB1 Datasheet
TBU-LAB1
Specifications of TBU-LAB1
Related parts for TBU-LAB1
TBU-LAB1 Summary of contents
Page 1
... Bourns Transient Blocking Unit (TBU ® High-Speed Electronic Current Limiter Protection BACKGROUND The Surge Threat Surge protection is the process of protecting electronic systems or equipment from voltages and currents which are outside their safe operating limits. These surge voltages and currents can be generated by short circuits, lightning or faults from a power system and usually enter the electronic system along inter-equipment wiring ...
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... Inexpensive devices which block faults of hundreds of amperes and thousands of volts are rare, if they exist at all. Introduction to TBU Protection Therefore, conventional protection relies on the primary form of protection being shunt devices, which divert current. However, shunt devices have limitations which affect their ability to protect electronic equipment by themselves ...
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... Capacitance and inductance are also Introduction to TBU Protection useful, but these impedances are frequency related and so circuits coordinated with such will work only for a band of surge frequencies. Non-linear ...
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... Introduction to TBU Protection 4 ...
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... It should reset after the surge to reinstate the system and continue to allow normal system operation. In addition, for practical and economic reasons it should be small in size and low in cost. The Transient Blocking Unit (TBU) protector meets these requirements. 5 ...
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... At this out point, the voltage disconnect portion of the circuit operates and by time 3 (~1 microsecond), the load is disconnected from the surge. During the remainder of the surge (time 4), the TBU device remains in the protected state of very low current and voltage at the load ...
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... At this point, the voltage disconnect portion of the circuit operates and by time microsecond), the load is disconnected from the surge. During the remainder of the surge (time 4), the TBU device remains in the protected state of very low current and voltage at the load. TBU SURGE ...
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... Figure 10. TBU device blocking a 600 V power cross At the onset of the surge, the TBU device reacted to the increasing current and triggered to protect the load. The TBU device remained in the V protected state throughout the remainder of the B high voltage cycle. At each surge zero-crossing, ...
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... Introduction to TBU Protection Conclusion The TBU device provides blocking protection for both power cross and lightning. Benefits of the TBU device include overvoltage and overcurrent protection in one device, extremely high speed performance, high blocking voltages and currents, precise output current and voltage limiting, very high bandwidth, and a small size ...