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This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.

What is the maximum length of modular cabling (VX001) that can be used in an arc flash protection system?

Issue:
maximum modular cabling length to be used

Environment:
VAMP 321 arc flash system

Resolution:

There are three scenarios:
1- Small system with only one controller device (VAMP321) and four or less I/O units (external power supply is not required):

Maximum 30 meter of modular cabling (VX001) including all cabling from the beginning to end of the bus to be used.
Maximum 30 meters of modular (VX001) cable can be used between two individual units.

2- Large system, single branch with only one controller device (VAMP 321) and more than four I/O units (with external supply):

Maximum 100 meter of modular cabling (VX001), including all cabling from the beginning to end of the bus
Maximum 30 meter of modular (VX001) cable can be used between two individual unit.

3- Large system, two branches with one or more controller devices (VAMP321) and more than four I/O units (with external supply):

Maximum 100 meter of modular cabling (VX001), including all cabling in both branches from the beginning to end of the bus.
Maximum 30 meter of modular (VX001) cable can be used between two individual unit.