PT433
The device is used for protection of three-phase asynchronous motors from electrical power supply disturbances. It is typically employed in submersible pump protection systems.
It provides protection against absence of one or more of the three phases or the neutral, asymmetry (adjustable, 5-25%), over-voltage and under-voltage.
The device is used for protection of three-phase asynchronous motors from electrical power supply disturbances. It is typically employed in submersible pump protection systems.
It provides protection against absence of one or more of the three phases or the neutral, asymmetry (adjustable, 5-25%), over-voltage and under-voltage.
Neutral connection is required.
It is installed in an electrical panel on a standard relay socket.
The output relay is activated when the three phases of the power supply do not differ between them in percentage more than the user adjustable value and do not exceed 270VAC (phase voltage). In any other case, as well as in case of complete loss of a phase or of the neutral, the relay is deactivated. In any other case , as well as in case of complete loss of a phase (phase voltage under 130VAC), the relay is deactivated.
It is a digital device using a microcontroller.
3 x 230V AC / 50Hz
One changeover contact relay 10Α / 250V AC cat. AC1
POWER ON and RELAY ON
Bulb type, 8p or 11p
Varistor (against overvoltage and lightning)
-20 to +50 C
Assymetry: 5 - 25% Vnom
Plastic box / 42x89x94mm / IP41
