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Monitoring relay

PTW-3µP

Monitoring relay

Phase and temperature monitoring relay

The PTW-3µP phase and temperature monitoring relay is used to protect three-phase motors against insufficient supply voltage and thermal overload.

PTW-3µP

Characteristics

// Protects three-phase motors against insufficient supply voltage and thermal overload

// Monitors the three-phase supply for phase symmetry, failure and symmetric undervoltage

// Monitoring of the motor temperature

// Six PTC thermistors can be connected in series

// One relay contact available for each of the mains and temperature monitoring systems, via which the PTW-3µP forwards the information to the higher-level controller

// The device uses LED’s to indicate the current operating state

// Ideally suited to integration into the existing controller

// Realisation of all requirements according to DIN EN 81 in relation to under-voltage and phase sequence.

PTW-3µP

Technical data

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