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Temperature relay T-154 for dry type cast resin transformer temperature probes IP31 IP 31 View larger

Temperature relay digital T-154

The temperature relay with digital display T-154 is a microprocessor-based electronic device for temperature monitoring and control of dry-type resin-coated transformers.  It connects to 3 PT100 probes and can be coupled with fans and alarms to protect your dry-type transformer.

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The T-154 temperature relay provides high level EMI protection 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 start ventilation system (FAN).

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POWER SUPPLY • Nominal voltage of 24-240 V.C.A. • D.C. 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 • Compensation of sensor cable length up to 500 m (1 mm2 ) 10 Ohm
OUTPUTS • Two output relays (Alarm-Trip) • One output relay for fan control (FAN) • One relay for sensor failure or malfunction (FAILURE) • Output contact rating: 5 A-250 VAC cosϕ=1

ACCREDITATIONS AND STANDARDS • Assembled in accordance with CE standards • C-UL-US approval • Protection against electrical and magnetic noise: 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 • Ambient operating temperature: -20° C to +60° C (-4° F to +140° F) • Environmental operating temperature: 0° C to +240° C (+32° F to +464° F) • User programmable: 0° C to +240° C (+32° F to +464° F) • Humidity: 90% non-condensing • Self-extinguishing ABS NORYL 94VO enclosure - IP65 polycarbonate panel • 4 VA load • Data storage: Minimum 10 years • Digital linearity of sensor signal • Self-diagnostic circuit • Vibration test IEC 68-2-6: Amplitude +/- mm from 2 Hz to 13.2 Hz Acceleration +/- 0.7 G from 13.2 Hz to 100 Hz • Seismic test according to IEEE 344-1,987 • Tropicalization optional • Plastic front cover optional

DIMENSIONS • 100 mm x 100 mm (3.94 x 3.94 in.) • DIN N43700 x 130 mm (5.12 in.) deep (with rear terminals) • 92 mm x 92 mm (3.62 x 3.62 in.) panel cutout

OPTIONS AND ACCESSORIES The T154 can be ordered with either platinum or nickel RTD sensors and channel alarm settings. Tropicalization of the electronic boards can also be specified. (For additional details on these options, please see the ordering section below).

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