Circuit Breaker Analyzer & Timer CAT35

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Overview


  • Timing and motion measurement
  • 3 timing channels (3×1) for main and resistive contacts
  • 6 timing channels for auxiliary inputs
  • 3 transducer input channels
  • 4 additional analog input channels
  • Built-in Micro Ohmmeter 200A
  • Dynamic resistance measurement
  • Detailed analysis of test results using DV-Win software

The Circuit Breaker Analyzer & Timer CAT35 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 200A.

Accessories

Included accessories

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

  • Main contacts cables 5 m (16.4 ft) with SCT clamps
  • Main contacts extensions cables 5 m (16.4 ft)
  • External trigger cable 5 m (16.4 ft) with banana plugs
  • Coil control cable set 5 m (16.4 ft) with banana plugs
  • Coil supply cable set 2 x 5 m mm2 (16.4 ft, 13 AWG) with banana plugs
  • Auxiliary contacts cable set 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 5 m 25 mm2 (16.4 ft, 3 AWG ) with battery clamps
  • Sense cables 2 x 5 (16.4 ft) m with alligator clamps
  • Cable plastic case – medium size (2x)
  • Transport case
Optional accessories

  • Main contact cables Extension 10 m (32.8 ft)
  • Main contact cables Extension 15 m (49.2 ft)
  • Current cables 2 x 10 m 25 mm2 (32.8 ft, 3 AWG) with battery clamps
  • Sense cables 2 x 10 m (32.8 ft) with alligator clamps
  • Current cables 2 x 15 m 35 mm2 (49.2 ft, 2 AWG) with battery clamps
  • Sense cables 2 x 15 m (49.2 ft) with alligator clamps
  • Thermal printer 4.5 inch (built-in)
  • Thermal paper roll
  • 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
  • Current clamp 30/300A + cable set 5 m (16.4 ft)
  • Cable plastic case with wheels – medium size
  • Universal transducer mounting kit

Technical data

Main contact inputs

  • Number of contact inputs: 3 (3 x 1), 1 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
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
    • 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 measurement
Time measurement resolution:

  • 0,1 ms for 2 s test duration (sampling rate 10 kHz);
  • 1 ms for 20 s test duration (sampling rate 1 kHz);
  • 10 ms for 200 s test duration (sampling rate 100 Hz);

Time accuracy 0,05% of the reading ± resolution
 

Breaker operation

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

The user can select any desired test sequence
 

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 provide superior timing control
  • Overcurrent and overvoltage protection
  • Coil supply input: 300 V DC max, 35 A DC max
Current measurement

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

 

Static resistance measurement

  • Built-in Micro Ohmmeter 200 A
  • Current range 5 A – 200 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)

 

Dynamic resistance measurement

  • Voltage and current measuring channels
  • DRM sampling rate 20 kHz (0,05 ms time resolution)
  • Resolution 16 bit
  • Breaker operations available for DRM test: Open (O)

 

DC output

  • 24 V voltage supply for current clamps

 

Analog inputs

  • 4 channels – Coil current measurement
  • 4 Voltage channels, each channel has four measurement ranges: ±0,5 V, ±2,5 V, ±60 Vand ±300 V AC/DC

The analog inputs are isolated with respect to all other circuits
 

Printer (optional)

  • Thermal printer
  • Graphic and numeric printout
  • Paper width 4.5 inch

 

Universal transducer input

  • 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 AC

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

 

Dimensions and weight

  • Dimensions (W x H x D): 480 mm x 197 mm x 395 mm

18.89 in x 7.75 in x 15.55 in

  • Weight: 12,9 kg / 28.4 lb

 

Mains power supply

  • Connection according to IEC/EN60320-1; UL498, CSA 22.2
  • Mains supply: 90 V – 264 V AC
  • Frequency: 50/60 Hz
  • Input power: 250 VA
  • Fuse 2 A / 250 V, Fast blow, but not user replaceable

 

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
Environmental conditions

  • Operating temperature: -10 ºC – + 55 ºC / 14 ºF – +131 ºF
  • Storage & transportation: -40 ºC – + 70ºC / -40 ºF – +158 ºF

Humidity 5 % – 95 % relative humidity, non condensing

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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