#1
14th December 2017, 12:13 PM
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Rdc lpu
Hii sir, I Wants to get the Information About the Lightning Protection for Isolated RS-232/422/485 Data Comm Circuits ?
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#2
14th December 2017, 01:48 PM
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Re: Rdc lpu
The rdcLPU is especially designed for use with RobustDC's isolated products. One rdcLPU fully protects 2-wire RS-485 or 3-wire RS-232 circuits. Key features include: Up to 20kA impulse discharge (8/20us wave) Self-resetting current limited to 250mA Simplifies ground wire installation Specification Nominal Voltage: +/- 15 vdc (suitable for RS-232/422/485) Nominal Current : 250mA (normal maximum for RS-485) Series Resistence : 6.5 ohm (at 25 C with minimum current) Impulse Discharge: 20kA (wave form 8/20us per IEC 801.5) Course Protection : Ceramic Gas Discharge Tube Fine Protection: High-Speed Transient Suppressor Diode Current Limiting : Positive Temperature Coefficient Thermistor Capacative Effect: adds approx 4000 pF per wire Supportted Speeds : 300 to 38kbps Lightning Protection for Isolated RS-232/422/485 Data Comm Circuits |
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