Seba Teleflex-VX Adapter for safe operation of reflectometers on overhead lines

Code: Seba-KMT Teleflex-VX


 

Datasheet PDF, 0.55 Mb

Description

Adapter for a safe operation of Teleflex reflectometers on overhead line systems

 

Very easy to operate

Very good resolution, for both near and distant ranges

Dangerous induction voltages reliably discharged

Connection to a measurement system

Test pulses up to 1,500 V for long distances

For distances over 2,000 km

 

Used together with a reflectometer, the measuring

equipment can show impedance irregularities in disconnected

overhead lines of all voltage levels. These

include short circuits, breaks and intermediate conditions.

It is mainly used for checking the overhead line

before it is switched back on, to avoid damage from

travelling waves and problems endangering life. Regular

checks can also be performed, in particular to

detect any changes. The special design and switch-on

system prevent risks to the operator and damage to

the equipment from induced voltages and currents.

The overhead line is tested by means of a switch-on

unit and a Teleflex reflectometer which are attached

to the disconnected line with a resistance wire. During

the measurement, the switch-on unit safely conducts

dangerous, induced energies to earth.

 

The following conditions can be detected with the test:

»» Breaks, short circuits and branching off

»» Smaller changes in impedance such as poor

connections, faulty insulators and in-growing trees

»» Changes in cross section and sags in the line

However, the smaller impedance changes can often only

be seen in a comparative measurement against a fault-free

line or a saved reference curve.

 

 

Standard accessories

Scope of delivery

»» Teleflex

»» Clamp ammeter

»» 40 A switch-on device / pulse generator

»» 5 or 10 m earthing system, consisting of:

- Earthing cable

- Earthing lead

- Auxiliary earthing lead

»» Mains extension lead (50 m cable reel)

»» Telescopic test pole with cable guide and

conductor screw terminal

»» Protective resistance (fuse wire)

»» Switch-on lead with coupling

»» Earthing terminal for ball pin

 

Recommended options

2 versions are available:

A standard system coupled to an active reflectometer,

with the test pulses fed into the measurement

object.

An overhead line system with pulse generator where,

in passive mode, the reflectometer acts as a transient

recorder. This system also has its own test pulse

generator, specially adapted to the requirements for

measuring very long overhead lines, 1,000 km and

longer.

Highly powerful pulses of 1,500 V and a pulse width

of 20 µS allow very large distances to be easily tested.

The Teleflex is used as the basic device for all the systems

- either as an individual device or when installed

in the measurement system. It can also be fitted

permanently in a station.

The tests can be undertaken with one, two or three

phases (sufficient switch-on units are required for

this).

 

 

More products SEBAKMT

SEBA SWG 8-1000 SURGE UNIT HIGH VOLTAGE GENERATOR FOR CABLE FAULT LOCATING SWG8-1000

• Voltage Ranges : 0..2kV / 0..4kV / 0..8kV
• Energy : 1000 Joules
• MAx Current Imax : 1400mA / 700mA / 500mA
• Optimized surge energy for switchable capacitors
• ICE - Impulse Current Method
• ARM - Arc Reflection Method

 

SEBA KMT HV TESTER 25KV HIGH VOLTAGE DC TESTER

• DC output voltage of 0 - 25 kV
• Portable HV Tester
• DC and insulation testing of cables, joints, electrical fixtures, etc.
• High flexibility with built-in battery

 

SEBA KMT BT 500 IS-1 CABLE FAULT CONVERTER

• Overload protection
• Automatic discharge
• Burning of high resistive faults
• Low- potential free voltage avoids damage to other conductors
• Adjustable current limiter

 

SEBA KMT HPG 50..110-H DC & AC HIGH VOLTAGE CABLE TESTING SETS

• HPG 50-H, AC testing up to 35 kVRMS / DC-testing up to 50 kV
• HPG 70 / 80-H, AC testing up to 50 / 58 kVRMS / DC-testing up to 70 / 80 kV
• HPG 110-H, AC testing up to 78 kVRMS / DC-testing up to 110 kV
• Suitable for AC-testing and DC-testing
• Compact, cast-resin high-voltage transformers
• Separate control and HV-units
• Voltage continuously adjustable
• Powerful system: 1,2 kVA continuous operation, up to 3 kVA 60 min. short-time operation

 

SEBA KMT VM-880 FERROUS METAL LOCATOR, BURRIED AND HIDDEN ASSETS

• Excellent sensitivity
• Lightweight, just 0.7 kg
• Improved ergonomics for comfort during prolonged usage
• Up to 26 hrs battery life from just 2 x AA (LR6) cells
• Ultra strong, submersible carbon fiber antenna tube
• Dot matrix LCD with backlight
• Audio and visual signal strength indicators

 

SEBA FAULT SNIFFER FOR DETECTION OF BURNING GASES FROM FAULT CABLES UNDERGROUND

• Customers can stay connected
• Fault location with no supply interrupt
• Reliable avoidance of incorrect excavations
• Fast and easy location of faults
• Can be used on straight or branched networks
• Handy size, easy to transport
• No pre-location required
• Accuracy in the decimetre range
• Sensitive to several specifi c gases and therefore suitable for any insulation material

 

SEBA KMT EZ-THUMP CABLE FAULT LOCATION SYSTEM ON LV/MV CABLES

• Easiest, fully automatic operation
• All in one small and portable unit
• ARM Prelocation
• Pinpointing with 500 J
• Available as 4 or 12 kV version
• Bright, brilliant colour display
• Battery operation

 

SEBA KMT ESG NT PINPOINTING EARTH FAULT LOCATOR IN SHEATH OF UNDERGROUND CABLES

• high accuracy pinpointing of a sheath fault
• Automatic adaptation to voltage level
• Automatic filtration of interfering signals
• Automatic zero calibration, no adjustments necessary
• History mode
• High-contrast color display

 

SEBA KMT FERROLUX FLE 10 AUDIO FREQUENCY RECEIVER FOR CABLE LOCATION, SELECTION, SHEATH FAULTS

• Precise direction guidance with right/left arrows
• "SignalSelect" for clear route location
• Depth and signal current intensity measurement at the push of a button
• Route sensor weighs less than 1 kg for non-tiring use
• "DirectSignal" for effective line location

 

SEBA SFX 5-1000 SPG 5-1000 CABLE FAULT LOCATION SYSTEM ON LOW AND MEDIUM VOLTAGE CABLES

• ICEplus for the easy and reliable fault prelocation without interference from branches
• High surge energy for pinpointing
• Compact and lightweight construction
• Testing up to 5 kV
• Automatic detection of the breakdown voltage
• Pinpointing with the integrated surge generator 0 … 2 / 4 kV 1000 J
• Pulsed DC for sheath fault pinpointing