Process steps & methods: Pre-location

Applications: Process steps & methods - Pre-location | BAUR GmbH

The objective of pre-location is to determine the fault position as precisely as possible so that the subsequent pin-pointing activities can be implemented as quickly and efficiently as possible.

Measurement methods for cable fault pre-location:

TDR

 

Time domain reflectometry for locating low-resistive faults and cable breaks, and for determining the cable length

SIM / MIM

 

The secondary/multiple impulse method is the most well-established and precise cable fault pre-location method. High-resistive faults and breakdown faults are ignited by a single HV pulse and the fault distance is measured very precisely several times via the TDR technology and automatically
evaluated. 

DC-SIM/MIM

 

Secondary/multiple impulse method in DC mode for pin-pointing intermittent faults. DC voltage is applied to the cable until breakdown. The cable capacitance is used to increase the available surge energy.

Conditioning-SIM/MIM

 

Difficult to locate or wet faults are first conditioned with surge voltage before a SIM/MIM measurement is carried out. 

Decay

 

Voltage-coupled decay method for locating breakdown faults with high voltage. The oscillating voltage reflection waves are evaluated automatically to determine the fault distance.

ICM

 

Impulse current method for locating high-resistive faults and breakdown faults. The fault distance is determined by analysing the impulse current diagram. Particularly suitable for use on long cables.

DC-ICM

 

Impulse current method used in DC mode for locating chargeable breakdown faults for which the cable capacitance is used in conjunction with a surge voltage generator.

Measurement mode with envelope curve display

 

In this process, even small, intermittent changes to impedance can be made visible by means of an envelope curve and saved automatically.

Fault conditioning / burning

 

High-resistive cable faults are handled with high performance high voltage burn down transformers. The ensuing fault becomes low resistive and therefore can be easily measured according to the TDR method. This application is used for the conventional paper-lead-sheath cables.

BAUR products for cable fault location / pre-location

1-24 of 29 products

IRG 4000

Time domain reflectometer / echometer

PGK 110 / 5 HB

AC/DC HV test set

PGK 110 HB

High-voltage test device

PGK 150 / 5 HB

AC/DC HV test set

PGK 150 HB

AC/DC HV test set

BAUR PGK 25

PGK 25

High-voltage test device

PGK 260 HB

AC/DC HV test set

PGK 50

High-voltage test device

PGK 70 HB

AC/DC HV test set

PGK 70/2.5 HB

AC/DC HV test set

PGK 80

High-voltage test device

BAUR ATG 2

ATG 2

Burn down transformer

BAUR ATG 6000

ATG 6000

Burn down transformer

BAUR IRG 2000

IRG 2000

Time domain reflectometer / echometer

shirla

Cable sheath test system

SSG 1100

Surge voltage generator

SSG 1500

Surge voltage generator

SSG 2100

Surge voltage generator

BAUR SSG 1100 - 3000

SSG 3000

Surge voltage generator

BAUR SSG 500

SSG 500

Surge voltage generator

Syscompact 2000

Mobile cable fault location system

Syscompact 2000 M pro

Portable cable fault location system

Syscompact 2000 portable

Portable system for pre-location and pinpointing

Syscompact 4000

Mobile cable fault location system

1-24 of 29 products