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TDR.950A Time Domain Reflectometer

The TDR.950A is an advanced Time Domain Reflectometer designed for pre-location of cable faults with high accuracy and multiple test methods. It supports low current impulse, ICM/Decay, and ARM arc reflection methods, making it suitable for locating low-resistance, high-resistance, short-circuit, open-circuit, and breakdown faults.

In addition, it can be used to measure cable length, joints, T-joints, and terminations, ensuring it is a versatile tool for power utilities and service providers. The system is compact, portable, and compliant with international standards, offering field engineers a reliable and user-friendly solution.

Key Features

  • Fully automated measurement and fault distance display

  • Multiple fault detection modes:

    • Low Current Impulse (TDR method): for low-resistance, short-circuit, and open-circuit faults

    • ICM/Decay (Impulse Current): for high-resistance and breakdown faults (with coupler)

    • ARM Arc Reflection: for precise pre-location (with coupler)

  • Measurement range up to 120 km with 0.1% accuracy

  • High resolution (0.07 m) with 400 MHz sampling rate

  • Test ranges: 100 m to 100 km (selectable)

  • Large 10.1” colour TFT touch screen with intuitive interface

  • Supports touch and keypad operation with drag-drop and double-click gestures

  • Internal storage for 8000 LV pulses and 250 flashover waveforms

  • USB communication with PC/laptop, software management, backup, and restore

  • Built-in rechargeable Li-ion battery with up to 6 hours runtime

  • Rugged IP65 protective case, suitable for field conditions

Technical Specifications

  • Pulse Voltage: 0–300 V ±15%

  • Pulse Width Range: 0.15 µs – 10 µs

  • Voltage-Proof: Up to 400 V CAT IV, 50/60 Hz

  • Output Impedance: 0–50 Ω

  • Input Signal Gain: 0–75 dB

  • Measurement Range: 0–120 km

  • Accuracy: 0.1%

  • Resolution: 0.07 m (at v/2 = 80 m/µs)

  • Velocity of Propagation (v/2): 50–220 m/µs adjustable

  • Sampling Rate: 400 MHz

  • Storage: 8000 LV pulses, 250 flashover waveforms

  • Communication: USB interface

  • Display: 10.1” TFT colour touch screen (1024×600)

  • Power Supply: Li-ion battery, 7.4 V (6 h runtime), charger 110–240 V AC

  • Operating Temperature: –20°C to +65°C

  • Humidity: 5–90% RH

  • Dimensions: 284 × 168 × 358 mm

  • Weight: ~4.7 kg

  • Protection: IP65

Included Accessories

  • Main unit ×1

  • Coupler ×1

  • Single Q line ×1

  • Double Q line ×1

  • Sampler ×1

  • Power cable ×1

  • USB communication cable ×1

  • Optional: Coupler high-voltage cable A ×1, Coupler high-voltage cable B ×1, Ground wire ×1

  • Transport case included

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