Circuit Breaker Analyzer & Timer CAT126

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Overview


  • Timing and motion measurement
  • 12 timing channels (3×4) for main and resistive contacts
  • 6 timing channels for auxiliary inputs
  • 3 transducer input channels
  • 4 additional analog input channels
  • Built-in Micro Ohmmeter 500A
  • Dynamic resistance measurement
  • Detailed analysis of test results using DV-Win software

The Circuit Breaker Analyzer & Timer CAT126 instrument utilizes the latest improvements for safe and fast testing, with unique technical capabilities for additional diagnostics of circuit breakers. Sophisticated design ensures efficient and reliable operations in high-voltage substations and industrial environments.

Static resistance measurement
The built-in micro ohmmeter generates a true DC ripple free current with an automatically regulated test ramp.

DRM (Dynamic Resistance Measurement)
The built-in micro ohmmeter can also be used for the DRM. The DRM test is performed by injecting a current through the breaker contact and simultaneously monitoring the voltage drop across the breaker contact as well as the current flow during the operation of the breaker. The DRM test requires the circuit breaker analyzer with a high-resolution measurement. The resistance curve, as a function of a contact travel can be used to reveal potential problems related to the arcing contact condition. The injected current value should be as high as possible but not less than 100A to provide a reliable voltage drop reading, thus allowing an easier detection of the arcing contact. This model provides up to 500A.

Accessories

Included accessories

  • Mains power cable
  • Ground (PE) cable
  • USB cable
  • DV-Win software
Recommended accessories

  • Main contact cables 5 m (16.4 ft) with SCT clamps
  • Main contact cables Extension 10 m (32.8 ft)
  • Coil control cable set 5 m (16.4 ft) with banana plugs
  • Coil supply cable set 2 x 5 m 2,5 mm2 (16.4 ft, 13 AWG) with banana plugs
  • Auxiliary contacts cable set 10 x 5 m (16.4 ft) with banana plugs
  • External trigger cable 5 m (16.4 ft) with banana plugs
  • Analog channels cable set 8 x 5 m (16.4 ft) with banana plugs
  • Current cables 2 x 10 m 50 mm2 (32.8 ft, 0 AWG) with battery clamps
  • Sense cables 2 x 10 m (32.8 ft) with alligator clamps
  • Cable plastic case – large size (x 2)
  • Transport case
Optional accessories

  • Current clamp 30/300A + cable set 5 m (16.4 ft)
  • TCurrent clamp 30/300A + cable set 5 m (16.4 ft)
  • Thermal printer 112 mm (4.4 inch) (built-in)
  • Thermal paper roll
  • Main contact cables Extension 5 m (16.4 ft)
  • Main contact cables Extension 15 m (49.2 ft)
  • Current cables 2 x 5 m 50 mm2 (32.8 ft, 0 AWG) with battery clamps
  • Sense cables 2 x 5 m (32.8 ft) with alligator clamps
  • Current cables 2 x 15 m 70 mm2 (49.2 ft, 00 AWG) with battery clamps
  • Sense cables 2 x 15 m (49.2 ft) with alligator clamps
  • Cable plastic case with wheels – large size
  • Digital rotary transducer with 5 m (16.4 ft) connection cable
  • Linear analog transducer 150 mm (5.9 in) with 5 m (16.4 ft) connection cable
  • Linear analog transducer 225 mm (8.85 in) with 5 m (16.4 ft) connection cable
  • Linear analog transducer 300 mm (11.8 in) with 5 m (16.4 ft) connection cable
  • Linear analog transducer 500 mm (19.68 in) with 5 m (16.4 ft) connection cable
  • Universal transducer mounting kit
  • Universal transducer mounting kit – extended version
  • Doble transducer adapter
  • Linear to rotary convertor

Technical data

Main contact inputs

  • Number of contact inputs: 12 (3 x 4), 4 per phase.
  • Each channel detects main and pre-insertion resistor contacts.
    • Closed ≤ 10 Ω,
    • Resistor contacts range 10 Ω to 5 kΩ,
    • Open ≥ 5 kΩ
    • Open circuit voltage: 20 V DC
    • Short circuit current 50 mA
  • Each channel measures resistance of pre-insertion resistors

 

Coil driver

  • Number of channels: 4 (3 Open and 1 Close coil)
  • Four separate outputs for coil triggering
  • Driver characteristics: 300 V DC max, 35 A DC max
  • Electronic drivers: it provides superior timing control
  • Overcurrent and overvoltage protection

 

Breaker operation

  • Close (C),
  • Open (O),
  • Close-Open (C-O),
  • Open-Close (O-C),
  • Open-Close-Open (O-C-O)
  • First trip test

User can select any desired test sequence

Analog inputs

  • 4 channels – Coil current measurement
  • 4 Voltage channels, each channel has four measurement ranges: ±0,5 V, ±2,5 V, ±60 V and ±300 V AC/DC
  • The analog inputs are isolated with respect to all other circuits

 

Static resistance measurement

  • Built-in Micro Ohmmeter 500 A
  • Current range 5-500 A
  • Max. load voltage 6.2 V
  • Resistance range 0,1 µΩ – 999,9 mΩ
  • Resolution 0,1 µΩ
  • Accuracy ± (0,1 % rdg + 0,1 % FS)

 

Printer (optional)

  • Thermal printer
  • Graphic and numeric printout
  • Paper width 112 mm

 

Mains Power Supply

  • Connection according to IEC/EN60320-1;
    UL498, CSA 22.2
  • Mains supply: 90 V – 264 V AC
  • Frequency: 50/60 Hz
  • Mains supply voltage fluctuations up to ±10 % of the nominal voltage
  • Input power: 250 VA
  • Fuse 2 A / 250 V, type F, not user replaceable

 

Environmental conditions

  • Operating temperature: -10 ºC – + 55 ºC / 14 F – +131 F
  • Storage & transportation: -40 ºC – + 70ºC / -40 F – +158 F
  • Humidity 5 % – 95 % relative humidity, non condensing

 

Auxiliary inputs

  • Number of channels: 6, galvanically isolated (external trigger input can be used as a sixth auxiliary input)
  • User selectable: dry or wet
    • Contact sensing (dry):
      • Open circuit voltage 24 V DC,
      • Short circuit current 5 mA
    • Voltage sensing (wet):
      • Working voltage 300V DC, 250V AC
      • Low activation mode ± 5V
      • High activation mode ±10V
  • Overcurrent and overvoltage protection

 

Time measurementTime measurement resolution:

  • 0,1 ms for 2 s test duration;
  • 1 ms for 20 s test duration;
  • 10 ms for 200 s test duration;

Time accuracy 0,05% of the reading ± resolution

Current measurement

  • Current measurement for Open and Close coil, 4 channels, Hall-Effect sensor
  • Range ±35A DC to 5 kHz
  • Accuracy ± (0,5 % rdg + 0,1 % FS)
  • Graphic presentation: currents waveform is displayed with resolution of 0,1 ms

 

Time measurement triggers

  • External trigger: 2 channels, input voltage: 10 V – 300 V AC/DC
  • Coil currents: threshold level user selectable
  • Auxiliary inputs
  • Analog inputs: threshold level user selectable, positive or negative

 

Universal transducer inputs

  • 3 digital travel transducer channels
  • Digital rotary transducers: 2500ppr
  • 3 analog travel transducer channels
  • Analog transducer input measurement resolution: 16 bit.
  • Internal supply for linear transducer: 5 V DC

 

Dynamic resistance measurement

  • Voltage and current measuring channels
  • DRM sampling rate 20 kHz
  • Resolution 16 bit
  • Breaker operations available for DRM test:
    • Open (O)

 

Warranty

  • Three years

 

Dimensions and Weight

  • Dimensions: 480 mm x 197 mm x 395 mm
    18,9 in x 7,8 in x 15,6 in
  • Weight: 12,2 kg / 26 lbs

 

Safety

  • Low Voltage Directive 2014/35/EU (CE Conform)
  • Applicable standards, for a class I instrument,    pollution degree 2,
       Installation category II : IEC EN 61010-1
  • CAN/CSA-C22.2 No. 61010-1
Electromagnetic Compatibility

  • Directive 2014/30/EU (CE Conform)
  • Applicable standard EN 61326-1

All specifications listed herein are valid at the ambient temperature of + 25 °C (77°F) and with the recommended accessories included.

Specifications are subject to change without notice.

DV-Win

Viewing and overlaying several graphs for complete and easy test result comparison. Selecting the measurement points and intervals using two available cursors. Zoom and pan graph feature. Specific test sequence setup. Customized configuration of test result graphs.

For the CAT form of DV-Win software there is Help menu available, with detailed instructions and explanations of all functions and features.

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Version: 107
Published: 2017-02-14

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