Telemetrics make Van mounting cable fault locating system is a
basic requirement of any power distribution network company. It is a very common fault locating power full system to localize underground any nature of cable faults in short time. The system is a
mobile laboratory having required equipments available to the operator at a site.
Van mounting cable fault locating system is a total solution for fault location in any type of power cables.
After identifying the type of fault, pre-location of fault can be
determined using the latest pre-location method TDR & ICM. In TDR method a narrow electromagnetic pulse with a fast rise time is sent in the cable that reflects back from the fault point / far
end where the impedance was change. The distance to the fault is then computed and displayed on screen.
In ICM method the surge tester ignites an arc/spark at the fault point. This result in a transient waves i.e. a spreading and repeatedly reflected travelling wave between the fault and the surge tester. Inductive couplers record this transient wave with the help of a pre-locator unit and convert in to fault distance.
It is used to perform di-electric strength of insulation in the cable and prove the integrity to identify and confirm fault conditions with a maximum test voltage up to 32 kV and current 10 mA.
Surges of high energy are applied across the fault at the set voltage with suitable time interval for pin-pointing the exact spot of cable fault. These surges create noise and vibrations at the fault point. The intensity of the noise and vibrations get attenuated during their travel to the ground surface. A ground microphone and a sensitive surge wave receiver carried on the route of the cable at the pre-located area and pin-point the exact spot of the fault in minimum time.
The Cable fault locating van system is used to perform DC high-pot test, pre-location and pin-point of underground cable fault. Pin-point of cable fault is carried out by acoustic with the help of suitable surge wave receiver in power transmission and distribution cable networks.
Surges of high energy are applied to the fault at the set voltage
and time interval for pin-pointing the exact spot on the cable length. These surges create noise and vibrations at the fault site. The intensity of the noise and vibrations get attenuated during
their travel to the ground surface. A ground microphone and a sensitive surge wave receiver carried on the route of the cable on the fault pre-located area and pin-pointed the exact spot of the fault
in minimum time.
The high voltage DC test up to 32 kV is carried out to check the dielectric strength or insulation of cable on DC test mode. The respective voltage and leakage current is indicated on the meters.
The Control unit is an integrated central operator inter-face for all operational modes and provides the monitoring of the system and the integrated safety facilities. It enables an easy and quick operation of the system, prevents operational errors and reduces the fault location time considerably. All necessary selection of equipment, switching and operations such as pre-locations, high voltage test, and pin-pointing is carried out.
Telemetrics gives higher priority to safety of operating personnel. The van system is divided in two section, operator section and HV section. HV section is equipped with proper safe guards such as door interlocks, inbuilt auto discharge. Operator section has Emergency off control on control panel. External emergency off switch at a entrance door to switch off entire system in case of any emergency.
Fast and precise cable fault location.
Modular test system with stand alone equipments and total test achievable from a single test station.
Latest pre-location TDR & ICM methods..
Comprehensive safety measures for optimum safety of operator.
Continues operation for extended period in case of pin-point difficult cable faults.
Safety earth monitoring system to provide operator safety.
Light weight, small, flexible receiver with high sensitive ground microphone for pin-point of cable fault.
Cable test / proof test by means of DC voltage up to 32 kV.
Optimized surge energy for switchable capacitors values for each range.
High surge energy of 1000 Joules with 8, 16 & 32 kV max output for easy to pin-point cable faults.
Full output energy delivering capacity of surge tester on each selected range.
Extended HV output up to 20 meters through heavy duty cable drum.
Fully protected operation with safety interlocks.
Surge Wave Tester SWT32D
0-8, 16 and 32 kV selectable and continuously variable.
1000 Joules full Energy at each Range.
Single and Auto.
Auto impulse Sequence
1.5, 3, 6 Seconds intervals OR as per customer request.
a)On/off lamp indication.
b)Analog moving coil meter for output voltage (kV) Indication
Dc Test :
DC Test Voltage
0-32 kV selectable and continuously variable.
10 mA continuous.
LED trip indication for current trip, Analog moving coil meter for leakage current (mA) Indication
a) Variac Zero inter-lock.
b) HV Switch inter-lock.
c) Over Heat Protection.
d)Output cable plug
Soft automatic discharge through in-built solenoid
540(L) x 530(W) x 800(H) mm
130 Kg Approx
Cable fault pre-locator TFL6
TDR and ICM
Voltage of transmitting pulse
Width of transmitting pulse
40 ns - 3.56 μs
400V AC (50/60Hz)
5 - 80 Ohm
0–16 km (In 1,2,4,8 and 16 km selectable ranges)
≤±1m when detecting range ≤4 Km
≤±4m when detecting range ＞4 Km
b) ICM mode
≤±4m when detecting range ≤4 Km
≤±16m when detecting range＞4 Km
Propagation velocity (VOP)
Velocity of wave
Number of echograms memories
320 x 240 dots
Charging input supply voltage
110 – 265V AC,50Hz
Charger output voltage
Operation time of rechargeable batteries
5 hours Approx
345 (L) × 290 (W) ×152 (H) mm
4.5 Kg Approx
Surge wave receiver SLE90
1.5 V X 8 AA size batteries.
More than 12 hrs. Continuous.
Acoustic and magnetic.
Broad band filter 70 - 3000 Hz.
9820 Hz, +/- 10 Hz bandwidth filter.
1) Dual LCD bar-graph display to indicate the levels
of acoustic and Magnetic channels.
2) Battery checks status.
3) Peak hold signal level bar on LCD.
More than 90 dB for both magnetic and acoustic channels
:500 Ohm for ground microphone.
500 Ohm for ground microphone.
1.5 kg. With batteries.
240 (L) x 80 (H) x 190 (D) mm
1) Ground microphone MIC–S 2) Headphone 3) Connecting cable 4) Caring stick.
HV output cable
10 sq mm single core screen output HV cable with heavy duty Brass clamps 25 mtr.
16 sq mm single flexible PVC copper cable 25 mtr.
Mains Supply cable
6 sq mm single core flexible copper cable 25 mtr.
Hard Discharge rod
Insulation tester 5kv
Standard Warranty - One Year