Accessories for smart transformers - eDevices
Temperature indicators for smart transformers
Winding and liquid temperature are key health parameters in the transformer. You need to monitor and control the temperature variations to assure reliable and safe transformer operation.
Choose one of our liquid and winding temperature indicators type eOTI/eWTI, an evolution of our conventional temperature indicators, and continuously monitor the liquid & winding temperature. It will allow you to keep any unexpected temperature rise that may lead to a transformer failure under control. Our accessories fit all transformer designs. Personalize the value settings for alarms and switches to fit your specific needs. The operator can monitor the preset values remotely or check the values on-site through the easy-to-read dial and decide on the best transformer maintenance schedule.
The indicators are equipped with a digital interface for easy connection to smart grid applications and can be integrated into a system through a central control unit. They are compatible with our complete eDevice family, can be connected also to third-party devices, and be part of our modular monitoring ecosystem for transformer diagnostics – MeDICA.
Contact us and get support with the product selection.
Why buy
- Proven technology with robust design
- Continuous online monitoring enables the end-users to adopt a condition-based maintenance approach and driving asset health management remotely
- Visual indicator enables easy on-site control of the operating status to the transformer operators
- Accurate and stable measurement based on proven and reliable Bourdon working principle
- Customizable mounting flange to fit all transformer designs
- Adjustable value settings for alarms and switches
- Easy installation
- Maintenance-free
Application
- Smart grid applications
- Liquid-filled transformers
- Suitable for new installations and retrofits
- Suitable for offshore environment
- Suitable for tropical climates
- Part of our MeDICA solution
Technical data at a glance
| Standard | IEC 60076-22-1 and JB/T 6302-2005 | |
| Housing | All the external parts are resistant to oils, salt fog and UV rays | |
| Installation | Indoor, outdoor and Tropical proof | |
| Capillary and bulb | Capillary tube: copper or stainless steel Bulb: bronze or stainles steel | |
| Capillary tube protection | Copper tube Flexible AISI 304 stainless steel amouring or Rilsan | |
| Lens | Polycarbonate, multistrate glass or tempered glass | |
| Ambient temperature | From -40°C up to +70°C | |
| Degree of protection | IP66 | |
| Ventilation valve | 2; to prevent the formation of condensation | |
| Cable gland | Up to 3; M25x1.5 | |
| Micro switches | Up to 4 | |
| Supply voltage | 24 V dc ±10% polarized | |
| Power consumption | 0,5 W | |
| Measuring range | eWTI: 0°C/+150°C; 0°C/+160°C; 0°C/+180°C; -50°C/+150°C eOTI: -50°C/+150°C; -20°C/+130°C; -20°C/+140°C; 0°C/+120°C; 0°C/+150°C; 0°C/+160°C | |
| Measuring tolerance | 1.5% of full scale | |
| Accuracy switch | 1.5% of full scale | |
| Analog output | 4-20 mA | |
| Digital output | Modbus RTU Data logger | |
