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

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BAUR ATG 2

ATG 2

Burn down transformer
with max. voltage of 10 kV

BAUR ATG 6000

ATG 6000

Burn down transformer
with max. voltage of 15 kV

BAUR IRG 2000

IRG 2000

Time domain reflectometer (TDR)
up to cable length of 65 km

IRG 4000

IRG 4000

Time domain reflectometer (TDR)
for cable lengths up to 1000 km

IRG 4000 portable

IRG 4000 portable

Portable time domain
reflectometer (TDR)
for cable lengths up to 1000 km

PGK 110 HB

PGK 110 HB

Voltage test
with DC or AC 50 Hz
110 kV, 14 mA

PGK 110/5 HB

PGK 110/5 HB

Voltage test
with DC or AC 50 Hz
110 kV, 66 mA

PGK 150 HB

PGK 150 HB

Voltage test
with DC or AC 50 Hz.
150 kV, 9 mA

PGK 150/5 HB

PGK 150/5 HB

Voltage test
with DC or AC 50 Hz
150 kV, 50 mA

BAUR PGK 25

PGK 25

DC HV tester
for use on low- and
medium-voltage cables up to 25 kV

PGK 260 HB

PGK 260 HB

Voltage test
with DC or AC 50 Hz.
260 kV, 9 mA

PGK 50 E

PGK 50 E

Voltage test with DC.
50 kV

PGK 70 HB

PGK 70 HB

Voltage test
with DC or AC 50 Hz.
70 kV, 7 mA

PGK 70/2.5 HB

PGK 70/2.5 HB

Voltage test
with DC or AC 50 Hz.
70 kV, 50 mA

PGK 80 E

PGK 80 E

Voltage test with DC
80 kV

shirla

shirla

Portable device
for cable sheath testing
and fault location

SSG 1100

SSG 1100

Surge voltage generators,
max. surge energy: 1100 J
Voltage: 0 – 8, 16, 32 kV

SSG 1500

SSG 1500

Surge voltage generators,
max. surge energy: 1536 J
Voltage: 0 – 8, 16, 32 kV

SSG 2100

SSG 2100

Surge voltage generators,
max. surge energy: 2048 J
Voltage: 0 – 8, 16, 32 kV

BAUR SSG 1100 - 3000

SSG 3000

Surge voltage generators,
max. surge energy: 3000 J
Voltage: 0 – 8, 16, 32 kV

BAUR SSG 500

SSG 500

Surge voltage generators,
max. surge energy: 512 J
Voltage: 3 – 16 kV

Syscompact 2000

Syscompact 2000

Cable fault location system
with IRG 2000
time domain reflectometer

Syscompact 2000 M pro

Syscompact 2000 M pro

Portable cable fault location system

Syscompact 2000 portable

Syscompact 2000 portable

Mobile cable fault location system

1-24 of 30 products