Digital temperature control relay TR-100M NTTR100M0

Digital Temperature Control Relay – Reliable Protection for Transformers and Motors

Digital temperature control relay TR-100M is an advanced microprocessor-based device designed for precise measurement and monitoring of dry transformer temperature. Equipped with the ability to connect four sensors (in two- or three-wire configuration), it provides comprehensive protection against overheating and damage. The device is not limited to transformers – it also finds application in protecting motors and generators, making it a versatile solution for a wide range of installations.

Functionality and Application

TR-100M displays current temperature values on a clear screen, and in the event of exceeding defined thresholds, generates alarm signals. This allows for a quick response and prevention of serious failures. The device is compatible with various types of temperature sensors, which increases its flexibility:

• PT-100: Platinum sensor with a resistance of 100 Ω at 0°C – a popular choice due to its precision and stability.
• PT-1000: Platinum sensor with a resistance of 1000 Ω at 0°C – an alternative to PT-100, offering slightly different measurement characteristics.
• PTC-1000 (EKS111): Sensor with a resistance of 990 Ω at 25°C – characterized by a distinct change in resistance depending on temperature.
• PTC (minika): Sensor with a cold resistance in the range of 20-250 Ω – compact and easy to install.

Additionally, TR-100M enables communication via the EIA/TIA-485 interface with the MODBUS RTU/ASCII protocol, allowing integration with SCADA systems and remote monitoring of operating parameters.

Advantages for Installers and End Users

This relay is not only a precise temperature measurement, but above all a guarantee of safety and reliability of the installation. For installers, this means:

• Versatility: Possibility of use with various types of sensors and in various applications (transformers, motors, generators).
• Easy integration: Modbus communication facilitates connection to automation systems.
• Precision: Accurate temperature measurement minimizes the risk of false alarms or undetected hazards.

For end users, the benefit is:

• Investment protection: Preventing damage to transformers and motors thanks to a quick response to temperature changes.
• Increased reliability: Long-term operation of devices without downtime caused by overheating.
• Early problem detection: Alarm signaling allows for quick diagnosis of potential failures.

The device also has functions such as digital temperature filtering and the ability to test output relays, which further increases its functionality and facilitates diagnostics. Thanks to this, TR-100M is a solid solution for both demanding industrial installations and commercial applications.