The Carlo Gavazzi DPBCM is a True RMS -phase monitoring relay designed to oversee phase sequence, phase loss, and over/under voltage conditions in three-phase systems. It ensures that all three phases are present with the correct sequence and that voltages remain within set limits, providing reliable protection for industrial equipment.

Key Features:

• True RMS Measurement: Accurately monitors phase-to-phase or phase-to-neutral voltages, ensuring precise detection of voltage anomalies.

• Adjustable Voltage Levels: Allows separate adjustment of upper and lower voltage limits to tailor protection parameters to specific application needs.

• Time Delay Function: Features an adjustable delay on alarm function ranging from . to seconds, preventing nuisance tripping due to transient conditions.

• Phase Sequence and Loss Detection: Identifies incorrect phase sequences and phase loss conditions, triggering immediate relay release to protect connected equipment.

• LED Indicators: Provides clear visual status with green LED for power supply, red LED for alarm conditions (flashing during delay time), and yellow LED for relay activation.

Technical Specifications:

• Input Specifications:

• Measuring Ranges: Selectable via DIP switches; for DPBCM:  V to  V AC (phase-to-phase) or  V to  V AC (phase-to-neutral).

• Frequency Range: to  Hz.

• Output Specifications:

• Relay Type: Single Pole Double Throw (SPDT).

• Contact Ratings:  A at  V AC (resistive load);  A at  V DC.

• Mechanical Life: ≥ million operations.

• Electrical Life: ≥, operations at  A,  V, cos φ = .

• General Specifications:

• Power Supply: Measures its own supply voltage; rated operational voltage for DPBCM is  V to  V AC ±%.

• Power Consumption: Approximately  VA at  V AC,  Hz.

• Operating Temperature: -°C to +°C.

• Housing Material: PA or Noryl.

• Mounting: DIN-rail in accordance with DIN/EN .

• Dimensions: . mm (W) x  mm (H) x . mm (D).

Carlo Gavazzi - DPB01CM48 - True RMS 3-Phase Monitoring Relay