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Page 26
Due to RMS continuous product improvement policy this information is subject to change without notice. 1S20_User_Guide/Iss C/10/07/23
Arc Trip Testing
Item Description
Complete
1
Initiate the operation of each sensor by the use of a suitable high
power camera flash
* If a current check interlock is employed in your ARC Fault
protection scheme ensure that current is injected into the
associated Overcurrent relay to cause operation of the current
check element at the same time the sensor is flashed
2
Check for correct operation of the 1S20 LED to indicate a trip
operation (Solid red for approx. 2 sec and then alternating red and
green until reset)
3
Confirm operation of the 1S20 ARC fault outputs corresponds to
the flashed sensor and in accordance with setting switch 3
Upon satisfactory completion of scheme testing the scheme may be placed into service per
established asset owner commissioning and operational procedures.
Refer also to the RMS ‘Arc Flash Timing Test Guide’ for a suggested test setup to provide a flash
source and determine ARC Trip times. The ‘Arc Flash Timing Test Guide’ is available on the Mors
Smitt website :
https://www.morssmitt.com/uploads/files/catalog/products/arc-flash-timing-test-guide(1).pdf
ARC Sensor Service Trouble Shooting
Item Description
Complete
1
If there is an arc sensor service indication re-check the 1S30
wiring integrity
2
Check that the correct number of sensors are wired to the arc
sensor inputs according to the ARC Monitor order code and
switch settings
3
Check for high ambient lighting conditions for all the sensors
Refer to the status indications to aid in troubleshooting.
