|TRANSFORMER MONITORING UNIT
TMU
Overview of TMU
Key Components
TMUs typically consist of sensors, a data acquisition unit, communication interfaces, and software for data analysis and reporting. Sensors measure various parameters related to transformer operation, providing valuable insights into its condition.
Application
TMUs are widely deployed in power substations, industrial facilities, and other critical infrastructure to monitor transformers of various sizes and voltage ratings.
Importance of Monitoring Transformers
Asset Protection
Transformers are essential components in power systems, and their failure can have significant consequences, including power outages, equipment damage, and safety hazards. TMUs help prevent catastrophic failures by providing early warning signs of potential problems.
Improved Reliability
By monitoring transformer health, TMUs enable proactive maintenance, reducing the risk of unexpected failures and ensuring uninterrupted power supply.
Cost Savings
TMUs contribute to cost savings by reducing maintenance costs, preventing unplanned outages, and extending the lifespan of transformers.
Enhanced Safety
TMUs play a vital role in ensuring the safety of personnel and equipment by detecting potential hazards and initiating appropriate responses.
Our Expertise
SIMPLYJITH TRANSFORMER MONITORING UNIT – WORKING PRODUCT IMAGE
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TRANSFORMER MONITORING UNIT
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Key Benefits of TMU
Real-time Data
TMUs provide real-time data on transformer performance, enabling operators to make informed decisions and take timely corrective actions.
Remote Monitoring
TMUs allow remote access to transformer data, enabling operators to monitor multiple transformers from a central location.
Predictive Maintenance
TMUs analyze data to identify potential issues before they escalate into major problems, enabling proactive maintenance and reducing downtime.
Historical Data
TMUs store historical data, providing valuable insights for trend analysis, performance evaluation, and asset management.
4G MODEM SPECIFICATIONS
| S.No. | Particulars | Specifications |
|---|---|---|
| 1 | Make or Model | 4G Fallback 2G |
| 2 | Air Interfaces | 850/900/1800/1900 MHz |
| 3 | Frequency Bands | 4G LTE band-40 having 2300 to 2400 MHz (TD-LTE) |
| 4 | Services | SMS, DATA, IVR |
| 5 | Operating Frequency | 50 Hz +/- 5% |
| 6 | Operating Temperature | -40 to +85 °C |
| 7 | Interfaces | UART 4 wire or 8 wire, SPI 4 wire, 1 I2C, SIM, 4 GPIO's |
| 8 | Baud Rate | 300 to 115200 |
| 9 | Measuring Interface | UART 4 wire |
| 10 | Audio Interface | Analog, Digital, Codec, DTMF |
| 11 | Antenna | Frequency band supportable |
| 12 | SIM Card Holder | Available with board |
| 13 | Service Indicating LED | Power LED, Network LED |
| 14 | Rating | Input: 230V |
| 15 | Current Consumption | Standby and Idle <2mA |
| 16 | Internet Services | TCP/UDP/FTP/HTTP/SMTP/SSL |
| 17 | Manageability & Configurability | Will be configured as per server and destination details |
| 18 | Board Dimensions | Will be provided as per the given dimensions |
| 19 | Firmware Upgradation | FOTA – Firmware over the air available |
| 20 | Controlling Option | AT commands |
| 21 | Module Approvals | R&TTE, CE, GCF-CC |
Key Sensors Used in TMU
Temperature Sensors
Temperature sensors measure the temperature of various parts of the transformer, including windings, core, and oil. These sensors help detect hotspots and overheating issues.
Dissolved Gas Analysis (DGA) Sensors
DGA sensors monitor the composition of gases dissolved in transformer oil, providing insights into insulation degradation and potential faults.
Voltage and Current Sensors
Voltage and current sensors monitor the voltage and current flowing through the transformer, providing information about load conditions and potential overloads.
Vibration and Acoustic Sensors
Monitor mechanical vibrations and acoustic signals to detect mechanical issues such as loose components or internal faults.
Moisture Sensors
Moisture sensors measure the moisture content in transformer oil, indicating potential moisture ingress that could lead to insulation deterioration.
Tap Position Sensors
Monitor the position of the tap changer to ensure proper voltage regulation and detect any misoperations.
RMTD – Measurement Specification
| Sno | Particulars | Detail |
|---|---|---|
| 1 | Applicable Standards | IS14697 / IEC 62052-11 (2003) IEC 62053-23 (2003) IEC 62056, IS Indian companion specification |
| 2 | Reference Voltage | 3 x 240 V, P-N (-40 to +20%) (3 Ø, 4 W) CT connected |
| 3 | Current Rating | Up to 200 A |
| 4 | Starting Current | 0.1% of Ib at UPF |
| 5 | Accuracy | Class 0.5s |
| 6 | Temperature Range | As per IS / IEC |
| 7 | Relative Humidity | As per IS / IEC |
| 8 | Frequency | As per IS / IEC |
| 9 | Power factor | 0.0 Lag - Unity - 0.0 Lead |
| 10 | Influence Quantities | As per IS / IEC |
| 11 | Power Consumption of meter excluding communication module. | As per IS / IEC |
| 12 | Meter display | The meter shall have 6 digits (with +/- indication), parameter, identifier, backlit liquid crystal display (LCD)/LED of minimum 10 mm height, wide viewing angle. Auto display cycling push button required with persistence time of |
| 13 | Parameters to be Communicated | As per the requirements |
| 14 | parameters | % THD for voltage and current upto 27 th harmonic; Harmonics of individual voltage and current, Sag, Power Quality Swell |
| 15 | Max. demand | Should have Maximum Demand reg ister for kW and kVA with integratio n period 15 min or 30 minutes. Resets should be auto-monthly or through communication command and Local push button As per IS . |
Specifications of the Transformer Monitoring Unit
| Parameter | Description |
|---|---|
| Voltage Rating | The maximum voltage that the TMU can handle. |
| Current Rating | The maximum current that the TMU can measure. |
| Communication Protocols | The communication protocols supported by the TMU, such as Modbus, DNP3, or Ethernet. |
| Power Supply | The type and voltage of the power supply required for the TMU. |
| Environmental Requirements | The temperature, humidity, and other environmental conditions that the TMU can withstand. |
| Interface and Display Options | The type of interface (e.g., web-based, mobile app) and display options (e.g., LCD, LED) available on the TMU. |
SIMPLYJITH TRANSFORMER MONITORING UNIT – TECHNICAL SPECIFICATIONS
- 🔹 Monitoring transformer tap position
- 🔹 Oil & Winding Temperature
- 🔹 IP65 rated for outdoor installations
- 🔹 LCD display on TMU
- 🔹 Communication: WiFi, RS485 (MODBUS), cellular (through gateway)
- 🔹 Auxiliary Supply: AC Single Phase (up to 270V AC) / DC Voltage (up to 270V DC)
- 🔹 Digital Inputs: 8 Input Channels
- 🔹 Digital Outputs: 8 Channels
- 🔹 Analog Inputs: 8 Channels configurable
- 🔹 Tap Position Sense: 2.5 VDC Excitation, can detect up to 50 tap positions
- 🔹 Internal Storage: Data storage up to one month
- 🔹 Data Reporting: User configurable in steps of 1 minute (standard 15 minutes)
- 🔹 Operating Temperature: -20°C to +70°C
- 🔹 Humidity: 95% Relative Humidity, Non-Condensing
- 🔹 System Frequency: 50Hz/60Hz ± 5%
- 🔹 Accuracy (Energy): Class 0.2S as per IS14697
- 🔹 IP Rating: IP25, IP65 with additional enclosure, Din-Rail Mount
- 🔹 Enclosure Material: Non-corrosive rugged polycarbonate
- 🔹 Size: Within size of 300 x 200 x 150 mm (Length x Width x Height) With IP65 Enclosure