SWG-12 (SWG-32)

MOBILE CABLE TEST AND FAULT LOCATION SYSTEM

SWG-12 and SWG-32 mobile systems are designed for the following applications:

  • testing cable insulation with DC (rectified) voltage up to 32 kV;
  • conditioning faults by burning faulty cable insulation with current up to 100 mA;
  • pre-locating cable faults with the reflectometer RIF-9 based on the pulse reflection method (TDR), voltage wave oscillation method (DECAY), impulse current envelope (ICE) method and arc reflection method (ARC / ARC multi‑shot);
  • pinpointing cable faults with the acoustic method with up to 2000 J surge wave generator and a suitable signal receiver.
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CABLE FAULT LOCATION MADE COMPACT

Under a single compact system SWG embodies all the main components of a fully-featured cable test van: a digital pulse reflectometer, a high-voltage step-up transformer, a powerful surge wave generator and a burn unit.

Rich functionality along with small dimensions and durable design allows using SWG for most cable fault location tasks where a cable test van would traditionally had been utilised. In addition, the system can be used for withstand testing solid insulation with DC (rectified) voltage up to 32 kV (for SWG-12 - 12 kV).

SWG-series systems can therefore be considered as an uncompromising solution for high-quality cables maintenance – these compact and mobile units provide the full range of functionality and feature safety functions commonly available only on fully-featured van-mounted cable test and fault location systems.

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HIGH SURGE ENERGY

For pinpointing cable faults by the acoustic method, SWG comes equipped with a surge wave generator with the surge energy up to 2000 J (for SWG-12 – 1100 J).

High surge energy contributes to a successful fault pinpointing providing a powerful signal in the conditions of high background noise, deep cable burial, or distant fault location.

 

DETACHABLE REFLECTOMETER

SWG systems are supplied with the digital pulse reflectometer RIF-9 used for pre-locating faults with the following methods:

Low-voltage method (stand-alone mode)

  • TDR: low-resistance faults, measuring the total cable length.

High-voltage methods (RIF-9 + high-voltage source)

  • DECAY: faults with high breakdown voltage;
  • ICE: high-resistance faults that cannot be converted to low-resistance by burning faulty insulation;
  • ARC / ARC multi-shot: high-resistance and unstable faults.

Detachable design makes it possible to pre-locate cable faults with the TDR method using the reflectometer separately from the SWG system.

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BUILT-IN BURN UNIT

All SWG systems include a built-in burn unit with continuous output voltage adjustment.

Burn unit is used for fault conditioning by permanently destroying cable insulation in the point of a fault, making it possible to subsequently use fault pre-location methods.

 

SURGE WAVE GENERATOR WITH A SURGE LEVELS SWITCH

For accurate cable fault pinpointing, the system is used in the surge wave generation mode.

The generator output voltage is set using a three-range surge voltage levels switch: 0...8 / 0...16 / 0...32 kV (for SWG-12 – 0...3 / 0...6 / 0...12 kV), which ensures maximum surge energy in the entire operating voltage range.

 

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MOBILITY

The system is built in the form of a trolley with a detachable reflectometer on top.

All the power supply, earthing and high-voltage cables are conveniently stowed on the holders on the rear panel.

Ergonomic arrangement of controls, informative display of the reflectometer, and large trolley wheels provide convenience in the field conditions.

 

SAFETY

Operator safety is assured by both modern and traditional protective means provided by the SWG system.

✓ Grounding control module.

✓ Overvoltage protection.

✓ Overcurrent protection.

✓ High-voltage transformer overheating protection.

✓ Protective grounding.

✓ Emergency stop button.

✓ ON/OFF keylock switch.

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* Pictures used herein are for illustration purposes only. Products' specifications are subject to change without notice. *


    SWG-32 SWG-12
High-voltage testing (DC) Output voltage range 0 … 32kV 0 … 12kV
  Output current range 0 … 10mA 0 … 10mA
  Voltage adjustment type Continuous Continuous
  Indication Analogue output voltage and current in real time Analogue output voltage and current in real time
  Measurement error ± 3% ± 3%
Fault conditioning (Burn) Output DC voltage range 0 … 32kV 0 … 12kV
  Output current range 0 … 100mA 0 … 100mA
  Voltage adjustment type Continuous Continuous
  Indication Analogue output voltage and current in real time Analogue output voltage and current in real time
  Measurement error ± 3% ± 3%
Fault pre-location (RIF-9) Pre-location methods

• TDR

• ARC

• ARC multi-shot

• ICE

• DECAY

• TDR

• ARC

• ARC multi-shot

• ICE

• DECAY

  Measurement ranges (for shortening coefficient of 1.50 or v/2 = 100 m/μs) 0 … 60 / 120 / 250 / 500 / 1000 / 2000 / 5000 / 10,000 / 20,000 / 50,000 / 120,000 m 0 … 60 / 120 / 250 / 500 / 1000 / 2000 / 5000 / 10,000 / 20,000 / 50,000 / 120,000 m
  Resolution:    
 

• for shortening coefficient of 1.5 (v/2 = 100m/μs)

• for shortening coefficient 1.87 (v/2 = 80.2m/μs)

0.5m

0.4m

0.5m

0.4m

  Distance measurement accuracy 0.2% of measurement range 0.2% of measurement range
  Sampling rate 200MHz 200MHz
  Time mark accuracy 0.01% 0.01%
  Output impedance range 2 … 100Ω, resolution 2Ω 2 … 100Ω, resolution 2Ω
  Probe pulse parameters:    
 

• voltage

• width range

45V

10ns … 100µs

0 … 10mA
  Gain range - 21 … + 69dB - 21 … + 69dB
  Shortening coefficient range 0.750 … 3.000, resolution 0.001 0.750 … 3.000, resolution 0.001
  Propagation velocity v/2 range 50.0 … 200.0m/μs, resolution 0.1m/μs 50.0 … 200.0m/μs, resolution 0.1m/μs
  Internal memory:    
 

• reflectograms with parameters

• data on cable shortening coefficients

1000

500

1000

500

Fault pinpointing (Surge) Surge voltage range levels

• 0 … 8kV

• 0 … 16kV

• 0 … 32kV

• 0 … 3kV

• 0 … 6kV

• 0 … 12kV

  Voltage adjustment type within each level Continuous Continuous
  Surge energy at each level up to 2000J up to 1100J
  Surge rate

• Single discharge, manually triggered

• 4 … 12 surges/min, automatic mode

• Single discharge, manually triggered

• 4 … 12 surges/min, automatic mode

  Indication Analogue output voltage in real time Analogue output voltage in real time
Controls and interfaces Connection interfaces

- USB-A (user memory stick, formatted under FAT32)

- USB-B (service only)

- USB-A (user memory stick, formatted under FAT32)

- USB-B (service only)

  Graphical display    
  • Reflectometer RIF-9 10.4” TFT, 800 × 600px, colour, resistive touch 10.4” TFT, 800 × 600px, colour, resistive touch
  Operating modes switch Manual Manual
  Surge voltage levels switch Manual Manual
  Secondary control interface Rotary encoder Rotary encoder
  Internal memory 10’000 test results 10’000 test results
Connections HV cable KEP-40DC 10m 6m
  Power supply cable 10m 10m
  Cable for TDR connection, 3-phase 2.4m 2.4m
  Protective earthing cable KEP-10GCt, copper 10 mm2, transparent 10m 10m
  Earthing control cable 10m 6m
Safety Protection

• Overvoltage, overcurrent, overheating protection

• Protective earthing

• Grounding control

• EMERGENCY STOP button, automatic discharge

• Operator lockout key

• Self-health and safety monitoring

• Overvoltage, overcurrent, overheating protection

• Protective earthing

• Grounding control

• EMERGENCY STOP button, automatic discharge

• Operator lockout key

• Self-health and safety monitoring

  Protection rating (as per EN 60529) • IP 30 • IP 30
Power supply and consumption Supply voltage 230V ±10% AC, single phase 230V ±10% AC, single phase
  Supply frequency 50Hz (60Hz optional) 50Hz (60Hz optional)
  Power consumption 2.0kVA 1.0kVA
Physical Dimensions H×W×D (with RIF-9) 1215×764×675mm 1172×775×603mm
  Total weight (with RIF-9, connection cables) 185kg 120kg

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