DEVItector™ II V2
User Guide
BC421332622232en-010101
16 | ©Danfoss | FEC | 2022.07
Fault symptoms
The types of faults comprise:
• One or more of the conductors disrupted (open circuit).
• Short circuit between two or more conductors.
• Combination of disruptions and short circuit.
The table below show the symptoms for a given combination of heating cable and type of fault.
Cable
Fault
Disruption of
Short circuit between
Screen
Conductor
(L or N)
Screen and
Conductor
Conductors
(L and N)
Single conductor
with screen
Will not show
No heat
Fault no. 1
RCD-relay cut off
or fuse is burnt out
Fault no. 3
Twin conductor
without screen
No heat
Fault no. 2
Fuse is burnt out
Fault no. 5
Twin conductor
with screen
Will not show
No heat
Fault no. 1
RCD-relay cut off
or fuse is burnt out
Fault no. 4
Burnt fuse
Fault no. 5
= No action!
= Not possible!
