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Phase Rotation Indicator

Phase Rotation Indicator


Just Do Not Need To Guess Any Further for Phase / Motor Rotation Measurements


The DT-901 is effective for measuring phase rotation in all areas where three-phase supplies are used to feed motors, drives and electrical systems. The DT-901 is a rotary field indicator and can provide clear indication of the 3 phase via an LCD display and the phase rotation direction to determine correct connections. It allows rapid determination of phase sequence and has a voltage (up to 690 V) and frequency range suitable for commercial and industrial applications (15 to 400Hz). Test probes supplied with the instrument have a variable clamping range for safe contact, especially in industrial sockets.

  • Voltage Range: 40V to 690V
  • Frequency Range: 15 to 400Hz
  • Nominal Test Current (per Phase): 1mA
  • Current Pickup: 1mA
  • Confirms to IEC61010/EN61010, CAT III 600V
  • Protection Level: IP40

Environmental Specifications

Operating Temperature 0 °C to +40°C
Pollution Degree 2
Type of protection IP 40


Mechanical Specifications 

Size (H x W x D) 130 mm x 69mm x 32mm
Weight 130 g


Safety Specifications

  • Electrical Safety
  • IEC 61010/EN61010
  • IEC 61557-7/EN 61557-7
  • Maximum Operating Voltage (Ume)  690 V
  • Protection Levels
  • CAT lll, 600V to ground


Electrical Specifications

  • Power Supply – Self Powered
  • Determine Rotary Field Direction Nominal Voltage 40 to 690 VAC
  • Frequency Range (fn) 15 to 400HZ
  • Current pickup 1 mA
  • Nominal Test current (in per phase) 1 mA
  • Testing Leads
  • Carrying Case
  • Instruction Manual