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PF-R - Three-Phase Pump Protection Relay, without Level Sensors

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Prevent pump damage from dry running, while protecting motors from overload, underload by COS Φ, phase imbalance or phase loss. and phase sequence.

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$194.45
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Description

The great advantage of PF-R relays is that, by using the motor itself as a sensor, without requiring any external detectors. The relay monitors the cos φ of the motor and stops it before a breakdown occurs due to dry running, cavitation, or a closed valve.

Features

  • Does not require level sensors to detect dry running.
  • For 3-phase motors from 1 to 630 A and over*.
  • Cable feed through relay itself.
  • Precise motor heating and cooling memory, reproduces its thermal image.
  • Visual indication of tripping cause.
  • Adjustable reset time for cos φ.

Applications

Suitable for 3-phase submersible pumps, petrol station pumps, and other types of pumps and systems where running without load is critical (dry well, broken transmission belt, etc.).

Protection functions

  • Overload.
  • Underload cos φ.
  • Phase imbalance or phase loss.
  • Phase sequence.

External Display Module (OD-PF)

This optional display module is to be mounted externally, on the panel door or a draw-out unit in a motor control centre (MCC).

  • LEDs indicate cause of the trip cause.
  • Reset push button (Ø22 mm, 7/8”).
  • Easy to install.
  • Connects to the relay by the module’s flat cable (2 m , 6.5 ft).
  • Suitable for motor control centres (MCC) and panel boards.
  • Weight: 0.05 kg / 2 oz.
  • Protection degree: IP50.

* Fanox offers a wide selection of current transformers for higher current levels.

https://www.fanox.com/products/pumps-protection-and-control/pump-protection-relays/pf-r/

Choose from the table below the PF-R model that fits your motor-pump. Fanox offers a wide selection of current transformers for higher current levels.

Product Details
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Data Sheet
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English/ Data Sheet PF-R

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PF-R - Three-Phase Pump Protection Relay, without Level Sensors

PF-R - Three-Phase Pump Protection Relay, without Level Sensors

Prevent pump damage from dry running, while protecting motors from overload, underload by COS Φ, phase imbalance or phase loss. and phase sequence.

Write your review
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