Power Electronics Asymmetry & Sequence Monitor Three-Phase PT431-11

It is used to protect asynchronous three-phase motors from anomalies in the electrical distribution network. A typical application is the protection of submersible pumps.

It monitors the voltage of the three-phase network for:

• the loss of one or more phases
• the asymmetry of the three phases (adjustable 5-15%)
• the sequence
• the overvoltage and undervoltage

It is digital and operates with a microcontroller.

Features:

• Power Supply: 3 x 230V AC / 50Hz
• Relay Outputs: One switching contact 10A / 250V AC cat. AC1
• LED Indicators: POWER ON and RELAY ON
• Connection Base: 11p lamp type
• With protection against surges and lightning
• Operating Temperature: -20 to +50 C
• Front Settings: Asymmetry 5 – 15% Vnom
• Enclosure: Plastic Box / 42x89x100mm