DEHN Combined Lightning Surge Arrester - 920371
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Tameson UKDehn Bxt Ml4 Hf 5 Combined Lightning Surge Arrester - 920371
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Product Information
Full details
This DEHN Combined Lightning Surge Arrester (920371) is designed for IT professionals and system integrators needing to protect dual high-frequency bus systems or video transmission lines from surges and lightning strikes. Its key benefit is integrated LifeCheck technology, offering proactive monitoring and contactless status verification for enhanced system reliability. A caveat is that replacement is required upon detected overload, necessitating proactive maintenance planning.
All features
| Model Part Number | 920371 |
|---|---|
| Brand | Dehn |
Extended Product Information
FAQs
What is LifeCheck technology?
LifeCheck is an integrated system that monitors the thermal and electrical load status of the surge arrester, indicating when it is nearing its operational limit or has been compromised by a surge event.
How do I check the status of the arrester?
Status can be checked contactlessly using a DEHNrecord reader (LC, SCM, or MCM model). The reader is held near the arrester to verify its operational status.
When does the arrester need to be replaced?
The arrester needs to be replaced when the LifeCheck system detects that it has been overloaded or compromised, indicated by a specific status reading.
What is the maximum frequency this arrester can handle?
The limiting frequency for this arrester is 100MHz.
Can this arrester protect standard network cables?
This arrester is specifically designed for dual high-frequency bus systems or video transmission lines. While it offers surge protection, it may not be optimized for standard Ethernet protocols (e.g., Gigabit Ethernet) which often require different protection characteristics.
What are the voltage ratings for this device?
The nominal voltage is 5-5V DC, with a maximum continuous voltage of 4.2V AC and 6V DC.
Is this arrester suitable for outdoor installations?
The product description mentions an 'Explosion-tested version', suggesting suitability for specific industrial or hazardous environments, but specific outdoor environmental ratings (like IP ratings) are not detailed here. Consult manufacturer specifications for environmental suitability.
Troubleshooting
Device not showing status or operational
Ensure the contactless reader is functioning correctly and is within the appropriate range of the arrester. Verify that the arrester itself is properly connected to the system and has not reached its overload limit, which would necessitate replacement.
System performance degradation after installation
Double-check the wiring against the installation manual to ensure correct polarity and connection. Verify that the operating frequency of the system does not exceed the arrester's limiting frequency of 100MHz.
Arrester shows overload indication
The arrester has been subjected to an excessive surge event or sustained overload. It must be replaced immediately with a new unit to maintain protection.
Pros and Cons
Pros
- Provides comprehensive protection against lightning and surges.
- Advanced LifeCheck technology offers real-time monitoring and early warnings.
- Contactless verification simplifies maintenance and improves safety.
- Compact design saves valuable space in installations.
- Suitable for specialized high-frequency and video transmission lines.
Cons
- Requires replacement upon detected overload, necessitating a maintenance schedule.
- Contactless reader (DEHNrecord) may be an additional purchase.
- Specific to 5V DC / 4.2V AC nominal voltages; not universally compatible.
- Limiting frequency of 100MHz may not suit all ultra-high-frequency applications.
Setup, Compatibility & Care
Setup: This arrester is designed for mounting on a basic element. Ensure the device is correctly integrated into the signal line following the manufacturer's wiring diagrams. Verify that the connected system operates within the specified nominal voltage range (DC 5-5V, AC 4.2V, DC 6V).
Compatibility: Primarily designed for dual high-frequency bus systems or video transmission lines. The limiting frequency is 100MHz. Ensure your system's operating frequencies are within this range. It requires compatible DEHNrecord readers (LC/SCM/MCM) for contactless status verification.
Care: Regularly check the status of the arrester using the contactless DEHNrecord reader. The integrated LifeCheck system provides alerts for thermal or electrical overload. If an overload is detected, the module requires replacement. No routine cleaning is specified, but ensure the mounting area is free of dust and debris for proper heat dissipation.