Temperature monitoring relay T154

single-phasethree-phasepanel-mount

The T-154 Temperature Relay with Digital Display is a microprocessor-based electronic device for temperature monitoring and control of dry-type encapsulated transformers. The T-154 temperature relay provides high level protection against electromagnetic interference and ease of use making it the benchmark for this application. It offers 3-phase transformer temperature control and a fourth option for center or ambient temperature. Dry contact relay outputs, ALARM, TRIP and FAILURE signals and FAN start. POWER SUPPLY - Nominal voltage of 24-240 VAC - DC 50/60 Hz - V.C.C. with reversible polarities INPUTS - 3 or 4 RTD PT100 inputs - 3 wires - Removable rear terminals - Input channels protected against electromagnetic noise and overvoltage - Sensor cable length compensation up to 500 m (1 mm2 ) 10 Ohm OUTPUTS - Two output relays (Alarm-Trip) - One output relay for fan control (FAN) - 1 relay for sensor failure or malfunction (FAILURE) - Output contact capacity: 5 A-250 V.C.A. cosϕ=1 ACCREDITATIONS AND STANDARDS - Assembled in accordance with CE standards - C-UL-US approval - Electrical and magnetic noise protection: IEC-EN61000-4-4 - Dielectric strength of 2500 V.C.A. for 1 minute from relays to sensors, from relays to power source, from power source to sensors - Accuracy: +/- 1 % total value, +/- 1 digit