star-delta timer 230Vac DIN rail
star-delta timer 230Vac DIN rail
star-delta timer 230Vac DIN rail
star-delta timer 230Vac DIN rail
star-delta timer 230Vac DIN rail
star-delta timer 230Vac DIN rail

Star-delta timer 230Vac Rail DIN

€40.50 Tax included

€33.47 tax excl.

Timer for star-delta starter , DIN rail mounting, working voltage 230Vac. This timer has a double output and independent time regulation for the control of contactors in a star-delta starter, facilitating and simplifying their connection.

Part number: GRT8-ST

Esquema temporizador estrella triángulo

Representative image for illustrative purposes, the article supplied will correspond to the specifications indicated.

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Double timer specially designed to control star-delta motor starters. DIN rail connection, with 230Vac control coil, 4 time scales, and 2 regulation times, star contactor input time and time delay between contactors changeover.

Easy regulation, on the front side, and status indication by led.

Status indication:

  • Red led: relay energized.
  • Green led: Relay output activated.

Scales and time ranges:

  • Scales potentiometer
    • 1 second maximum time.
    • 10 seconds maximum time.
    • 1 minute maximum time.
    • 10 minutes maximum time.
  • Star potentiometer
    • 10 to 100% of scale value.
  • Star-delta change potentiometer
    • 0.1 to 1.0 seconds.

Operating mode:

When the timer receives voltage on the coil (A1-A2), the star relay output Υ (15-18) is activated, for the time selected on the setting potentiometer marked star. Once this time is reached, the output is deactivated, the two outputs remain deactivated for the time selected on the star-delta potentiometer, once this time has elapsed the delta output Δ 25-28 is activated, remaining this one continuously activated. To reset the timer the voltage on the coil (A1-A2) has to disappear.

diagrama de tiempos temporizador estrella triángulo

Technical characteristics:

  • Manufacturer/Supplier: Denor
  • Part number: GRT8-ST
  • Application: Timer star-delta.
  • Rated operating voltage: 230Vac.
  • Working voltage tolerance: -15% +10%.
  • Status indication: By means of LEDs (red and green).
  • Time scales: 4 (1s-10s-1m-10m).
  • Star time: 10..100% of the time scale value.
  • Star-delta changeover time: 0.1..1 second.
  • Type of adjustment: By potentiometers.
  • Time tolerance: 10%.
  • Repetition accuracy: 0.2%.
  • Temperature coefficient: 0.05% /ºC at 20ºC.
  • Type of outputs: 2 switched NO/NC contacts.
  • Output current (Ith): max 16A.
  • Maximum switching voltage of the output contacts: 250Vac/24Vdc.
  • Minimum switching power of the output contacts: 500mW at 24Vdc.
  • Status indication: by led.
  • Mechanical life
  • Electrical life (AC1)
  • Reset time: max 200ms.
  • Working temperature range: -20ºC...+55ºC.
  • Storage temperature range: -35ºC..+75ºC.
  • Mounting type: DIN rail.
  • Degree of protection
    • Front: IP40.
    • Connections: IP20.
  • Maximum cable size: 1x2,5mm² or 2x1,5mm².
  • Weight: 85g.
  • Dimensions: 90x18x64mm.
  • Standards: EN61812-1; IEC60947-5-1.

Front panel:

Frontal temporizador GRT8-ST

Wiring:

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Dimensions:

dimensiones temporizador estrella triángulo

Material for professional use, install in compliance with the regulations in force at the place of installation.

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