Three-Phase Pump Protection Relay PF47-R, 5.5 - 15hp, 230V (Discontinued)

Fanox Three-Phase Pump Protection Relay PF47-R uses the motor itself as a sensor, therefore, does not require an external level sensor to detect dry-running. 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
- Power of three-phase 230V motor: 5.5 - 15hp
- Approx. 3-phase motor current: 16 - 47.5 Amp... and over with extrenal current transformer*
- Auxiliary relay voltage: 230Vac
- Does not require level sensors to detect dry running
- 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.