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T1048

Product catalog summary

Overview: The document introduces the T1048 series, a new temperature protection system for transformers, highlighting its advanced features and functionalities aimed at improving customer satisfaction through continuous improvement.

Intellifan Function: This feature reduces thermal shock by partially activating the ventilation system in stages, alternating the activation of FAN1 and FAN2 every 30 minutes to maintain optimal temperature control.

Voting Function: Utilizes redundancy by monitoring three-phase probes (U-V-W) to ensure accurate temperature readings and prevent false alarms. The function activates the tripping contact only if the temperature exceeds the set threshold on at least two channels simultaneously.

Hysteresis (HYS) Function: When activated, this function triggers an alarm if the temperature exceeds the set limit by 1°C and maintains the alarm until the temperature drops 5°C below the threshold.

Fail Safe Function: Offers normally open (n.o) and normally closed (n.c) contact options for alarm and trip relays, ensuring reliable operation by switching contacts only when temperature limits are reached.

Programmed Tables: Provides pre-set programming tables (SET-1-2-3-4-5) for quick device configuration, with manual adjustments possible in the SET programming.

Ethernet Output: Enables integration with monitoring systems via Ethernet connectivity, supporting Modbus TCP for remote configuration, real-time monitoring, and troubleshooting.

Technical Specifications:

Power Supply: 85-260 Vac-dc with reversible polarities, protected by a 2.5A fuse.
Inputs: Configurable for RTD Pt100 sensors or thermocouples, with protection against electromagnetic interference.
Outputs: Includes alarm relays for various functions, with options for RS485 and Ethernet outputs.
Tests and Performances: Assembled according to CE rules, with protection against electromagnetic noise and high dielectric strength.
Display and Data Management: Features dual displays for temperature and message display, with multiple alarm thresholds and diagnostic capabilities.
Dimensions: 232 x 166 mm with a panel cut-out of 140 x 205 mm.

Catalog excerpts

relays & ventilation Temperature protection ALWAYS A STEP FORWARD FOR CUSTOMER’S SATISFACTION!

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Intellifan Function Voting Function Programmed tables introduction Fail Safe Function Ethernet Output ‐ only for ETH option HYSteresis function ALARM and TRIP (HYS)

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PROTECT THE TEMPERATURE OF YOUR TRANSFORMER WITH THE NEW SERIES T1048! INTELLIFAN The Intellifan function allows you to reduce the thermal shock on the transformer anticipating partially (one bar at a time) the activation of the ventilation system. Enabling FAN INT. “YES” the unit will alternate, each 30 minutes, the activation of contacts FAN1 and FAN2, anticipating the activation of the ventilation system to the intermediate value between FAN1 ON AND FAN1 OFF. VOTING Taking advantage of the principle of redundancy, we use the probes installed on the three phases U‐V‐W to monitor the operation...

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POWER SUPPLY: Rated values 85-260 Vac-dc Vdc with reversible polarities Protection fuse 2,5A 5x20 INPUTS! 4 configurable inputs by installing one of the following different cards: - Card for 4 inputs RTD Pt100 sensor 3 wires - Card for 4 inputs TCK (thermocouple) Removable rear terminals Input channels protected against electromagnetic interference Sensor length Pt100 cable compensation up to 500 m (1 mm2) Sensor length TCK cable compensation up to 100 m (with cable and joints compensated) OUTPUTS ! 2 alarm relays (ALARM-TRIP) 1 alarm relay for sensor fault or working anomaly (FAULT) Output relays...

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