Fault passage indicator for overhead network
Flite 110-SA adjusts to the network voltage and frequency.
Using fault detectors makes it easier to locate faults on distribution networks.
The detector must adapt to the electrical network characteristics and be perfectly
visible to allow maintenance teams to quickly detect faulty network sections.
Flite 110-SA is configurable on site.
An overhead fault detector must be coordinated with the upstream protection system
whose trip threshold can vary according to its position on the MV network.
Flite 110-SA indicates permanent and transient faults with the same
indication light intensity.
A fault detector always indicates permanent faults, but utilities companies often also
want to find transient fault (a fault is considered to be “transient” when the upstream
protection device eliminates the fault during its reclosing cycle).
The indicator light is visible from a 360° angle.
Flite 110-SA is fitted with two sensors, one measuring the magnetical field
(image of the current) and one measuring the electrical field (image of the voltage).
Flite 110-SA is hooked directly onto the line without any specific tooling.
When installed on a live conductor, Flite 110-SA automatically adapts to the network
voltage frequency, then activates the fault detection function.
Fault types: a fault is expressed either in terms of the exceeding of an absolute current
threshold (Imax, phase-phase fault), or a variation in current over a given time (di/dt,
phase-earth fault). Flite 110-SA indicates both transient faults and permanent faults. The
transient fault detection function can be disabled.
Fault confirmation: in order to avoid any indication errors, faults are confirmed by the
lack of voltage after the upstream protection device has tripped.
Inrush current filter: when the line is energized, a time delay filters inrush currents due
to transformer magnetization.
Resetting: permanent fault indication is automatically cleared when voltage returns to
the MV line or following a time delay. Flite 110-SA checks that the MV supply has
stabilized before resetting itself.
Change in transient faults: if a permanent fault occurs whilst the device is already
indicating a transient fault, the flashing automatically changes from transient to
permanent, thus enabling maintenance staff to deal with faults according to their priority
Distribution network voltage 7 kV to 69 kV (1)
Power frequency 50 Hz and 60 Hz
MV neutral arrangement Impedant, solidly grounded
Conductor diameter 5 to 22 mm
Fault detection - parameters
di trigger setting 6-12-25-60-90-120-160 A-Off
Imax trigger 100-200-500-800 A
Transient faults detection On - Off
dt value for di/dt operation 30 ms ± 10 ms
Inrush restraint durationt 3 s
Loss of voltage condition U < 45 % Un
Fault confirmation Voltage drop within 70 s after fault detection
Reset (permanent faults)
Indication Voltage presence during 70 s
Light power 2-4-8-16 hours
Manual reset by magnet
Signalisation Red flash light
Light power 40 lumens
Visibility angle 360°
Flash period for permanent faults 1 flash every 3 s (0 to 2 h)
Flash period for transient faults 2 flashes every 12 s (0 to 8 h)
Standard total flash duration 800 hours
Lithium battery life expectancy > 10 years
Operation temperature – 40 °C to + 70°C
Storage temperature – 40 °C to + 85 °C
Protection level IP 54 IK 7
Dimensions 130 mm x 130 mm
Net weight 360 g
Wind resistance 150 km/h
Short-circuit withstand 25 kA/170 ms (ANSI 495)
Dielectric test 125 kV/60 Hz (IEC 60060-1)
Vibrations and shocks test CEI 68-2-6 and 68-2-27
EMI/EFI immunity CEI 801-3 and FCC Part 15
Salty fog and humidity tests CEI 68-2-11 and 68-2-30
(1) < 7 kV on request
Flite 110-SA is clipped on a live conductor: either with a standard shotgun hotstic or with a hotstick fitted with a universal adapter and a Flite 110-SA installation tool
Flite 110-SA 59938
Replacement lithium battery 59982
Installation tool with SICAME adapter 59953
Installation tool with BOWTHORP adapter 59954
12 meter telescopic hotstick (20 kV insulated) 59955