Intelligent Dry-Type Transformer Monitor is designed for the safe operation of dry-type transformer. It can automatically operates the fan's relay according to the temperature. By comparing the current temperature to a pre-selected temperature, the monitor operates an alarm and the relay trips to keep the transformer running safely. Technical index: | Rail transit fiber optic temperature controller | | Fluorescent fiber optic sensing probe |
| Ambient temperature: | -20ºC~+55ºC | | Material: | No metal material, quartz fiber |
| Ambient humidity: | < 95% (25ºC) | Probe size: | 3mm in diameter;
Standard equipped with 3M(Customizable length) |
| Working voltage: | AC 220V (+10%,-15%) | Immune electromagnetic interference
Withstand power frequency voltage 100KV |
| Working frequency rate: | 50Hz OR 60Hz(±2Hz) |
| Range of measurements: | -40.0ºC~200.0ºC |
| Measurement accuracy: | ±1%FS | | |
| Resolution ratio: | 0.1ºC | | |
| Fan output total capacity: | 9A/250VAC | | |
| Control output capacity: | 5A/250VAC;5A/30VDC(resistivity) | | |
| Production standards | JB/T7631-2005"Electronic temperature controller for Transformers"Industry standards |
| Adoption of accreditation standards: | ISO9001:2008International Quality Management System Certification |
| Pass the test standard: | IEC61000-4:1995 International standard |
| GB/T17626-2008"Electromagnetic compatibility test and measurement techniques"standard |
| Special temperature controller for rail transit |
| 1.Monitor up to three dry-type transformer windings; |
| 2.Built-in fan control, fan exerciser; |
| 3.Each temperature sensor has temperature compensation function |
| 4.When the monitor is turned off, the temperature value can be saved. |
| 5.LCD liquid crystal display, LED display lamp, operation button; |
| 6.Clock function; |
| 7.Alarm function for transformer door cabinet opening; |
| 8.1 pairs of over temperature alarm terminals (1 normally open, 1 normally closed); |
| 9.3 set of over temperature trip terminals (3 normally open and 3 normally closed) are provided; |
| 10.1 sets of fan remote transmission nodes (1 normally open, 1 normally closed); |
| 11.1 set of temperature controller power off alarm contacts (1 normally open, 1 normally closed); |
| 12.1 set of temperature controller fault alarm contacts (1 normally open, 1 normally closed); |
| 13. RS485 communication function, MODBUS-RTU protocol; |
| Custom function |
| 1.According to customer demand, provide 4 channel 4~20mA analog current output function; |
| 2.According to customer requirements, provide fan fault judgment function, provide two fan fault alarm contacts ; |
| 3.1-8 channel optical fiber temperature measurement |
| 4.Many kinds of communication: industrial networking module, Ethernet communication, Profibus communication module and so on. |
| 5.According to customer needs, provides alarm function for winding and iron core temperature rise rate. |
Optical Fiber Temperature Controller for Rail Transit
Embedded installation
Model Number:SR-TL series
Dimension:442×558×140(mm)
Front view lateral view
Audited Supplier 
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