Distribution Transformer Monitor
Distribution Transformer Monitor
The INCON® Distribution Transformer Monitor (DTM) provides continuous, meter-grade precision performance monitoring of high-value, mission critical, low voltage pad mount and conventional pole mount transformers.
With the ability to monitor and trend transformer output voltage, loading (current) by phase, temperature, and Power Factor for an entire network of transformers, utilities are armed with powerful information regarding power distribution and equipment maintenance.
TRANSFORMER STATE-OF-HEALTH
By continuously monitoring the key indicators of a transformer’s performance, including temperature and load, the DTM provides remote access to real-time transformer health data and automated threshold alarms for condition-based maintenance planning.
TRANSFORMER LIFE PREDICTION
The DTM not only tracks the loss of life in a transformer but also employs advanced predictive algorithms to forecast the estimated remaining run time. The DTM ensures a near-constant assessment of the transformer’s health, considering real-time conditions and applying a calculated dynamic acceleration factor to predict the cumulative loss of life accurately.
POWER FACTOR MONITORING
The DTM provides a transformer’s Power Factor, which is a trend of useful power delivered. Power Factor helps utilities to determine the most efficient distribution of power during peak times and to ensure the delivery of high-quality outbound power when their customers need it the most.
HIGH PERFORMANCE HARDWARE
A powerful industrial IOT grade processor and sophisticated polyphase energy measurement integrated circuit provide superior on-board computation capability and Power Quality Monitor level fidelity.
DEPLOY ANYWHERE AT SCALE
A built-in Cat M1/NB2 cellular modem allows the DTM to communicate via a cellular network, enabling utilities to deploy DTMs virtually anywhere and at scale (i.e. one unit to thousands of units).
Via the CONVERGE™ web interface, utilities can manage by exception with customized threshold alarms and notifications:
Voltage Signal Delta
Current Signal Delta
Fault Current
Voltage Sag and Swell
K-Factor Harmonics
Top/Bottom Tank Temperature
Temperature Delta
Winding Hot Spot Load Ratio
Winding Load
Winding Hot Spot Temperature
By continuously monitoring the key indicators of a transformer’s performance, including temperature and load, the The DTM not only tracks the loss of life in a transformer but also employs advanced predictive algorithms to forecast the estimated remaining run time.
CONTINUOUS MONITORING
The DTM continuously assesses transformer loading and thermal conditions to calculate the accumulated loss of life in real-time, updating at approximately two second intervals.
ACCELERATION FACTOR
After each interval, the DTM updates the accumulated loss of life. This considers exact interval duration and adjusts with an acceleration factor based on the loading and thermal conditions.
LIFETIME ESTIMATE
The average acceleration factor is then applied to any unmonitored time before the DTM was installed. This provides a thorough estimate of the total loss of life and can be used in predictive maintenance planning.
A secure MQTT communication protocol allows the DTM to safely communicate with the web-based UNITE™ asset management database. UNITE™ provides user-friendly access to all distribution transformer performance data for convenient centralized analysis and reporting.
ASSET MANAGEMENT
UNITE™ is a sophisticated IoT database that features advanced data visualization tools for Franklin Electric monitoring systems like the DTM.
ANALYSIS
UNITE™ provides user-friendly access to voltage, temperature, current Power Factor data, and more for convenient analysis and reporting.
CONSOLIDATION
Arm service and maintenance personnel with a consolidated view of an entire network of distribution transformer health and performance data.
The DTM can be applied to any type of distribution transformer with a secondary output of 480 volts or less, phase to neutral. This includes, single-phase, split-phase, or three-phase transformers. Installation has been kept simple with only a few connections required to the transformer secondary.
SIMPLE CONNECTIONS
Four split-core Rogowski Coils measure load current. Five voltage leads measure Phase A, Phase B, Phase C, as well as neutral and ground. Two magnetically mounted RTD sensors measure top and bottom transformer temperature.
MAGNETIC MOUNTING
Four powerful 25 lbs. magnets integrated into the mounting plate allow the DTM to be installed vertically or horizontally without any drilling or adhesives.
SETUP & CONFIGURATION
All user interface communication including configuration of alarms and settings, data viewing, and alarm resetting is made via the CONVERGE™ web interface. Configuration can be done locally via Wi-Fi using a web browser or remotely through the cellular connection.
ONCE THE PRODUCT SHIPS, WE'RE JUST GETTING STARTED
The Franklin Electric Grid Solution Technical and Field Support Teams are here to assist with training, installation, and support. Our Field team will come to your site for training or installation supervision and our Support Center staff is available to assist with troubleshooting, warranty processing, and software installation support.
Components & Dimensions
1. IP68 weather-proof enclosure
2. Voltage leads (5)
3. Split-core Rogowski coils (4)
4. RTD temperature sensors (2)
5. Cable strain relief
6. Status indicator LED
7. Ethernet port (optional)
Specifications
Transformer Monitor
Applications
- 3-Phase Wye, 100-480V Line-Neutral, 50/60 Hz
- 3-Phase (3 and 4-wire) Delta, 480V Line-Line, 50/60 Hz
- 3-Phase Corner-Grounded Delta, 100-480V Line-Line, 50/60 Hz
Distribution Transformer Monitoring Reporting
- Voltage ±10%, Frequency ±5%
Power Source
- Powered from the transformer secondary via Phase A
and N voltage leads
Temperature Sensors
- 2 each RTDs, 25lb. Magnetic-mounted, 5-foot lead length
Current Sensors
- 4 each, Rogowski Coils, 5-foot lead length
Fuses
- Internal fuses on phase A and neutral leads (2 Amps)
Environmental
Enclosure Rating
- NEMA 4X
- IP65 (Ethernet Option)
- IP66/67 (Cellular Option)
Operating Temperature/Humidity
- -40°C to +60°C / 0 – 90% RH
Storage Temperature/Humidity Range
- -40°C to +85°C / 0 – 95% RH
Communications
Local Communication
- Wi-Fi (TCP/IP)
User Interface
- Embedded webserver running on Linux platform accessible via standard web browser
Protocols
- MQTT
Embedded Device Options
- Cat M1 Cellular
LED Indicator
- Tri-color LED to indicate running and alarm states (can be deactivated)
Mechanical
Size (W x L x H)
- 6.25" x 7.75" x 3.75"
Weight
- 5.5 Lbs.
Mounting
- Magnet-mount provided; Pole-mount kit available
Standards
- IEC 61010 CAT IV 480V
Measured Parameters
| Signal | Channels | Range | Accuracy |
| Temperature | 2 | -50°C to +150°C | ±3°C (1.5%) |
| 10/12 Cycle RMS Voltage | 3 | 90-480V RMS Lineto- neutral |
±0.5% |
| 10/12 Cycle RMS Current | 3 + Neut. | 0-3000 Amps | ±1% |
| Phase Angle | 3 | 0° – 360° phase difference |
±2° |
| Line Frequency | 3 | 47-63 Hz | ±0.1 Hz |
| Power Factor | 3 | ± 1.000 | ±0.05 |
| Voltage THD | 3 | 0% – 400% THD | ±5% absolute |
| Current THD | 3 | 0% – 400% THD | ±5% absolute |
Communication
All User Interface communication including configuration of alarms and settings, data viewing and alarm resetting can be done locally via Wi-Fi using a web browser or remotely via the cellular connection.
| Model | Description |
|---|---|
| DTM-4-VZ | Distribution Transformer Monitor with Verizon® Sim Card |
| DTM-4-ETH | Distribution Transformer Monitor with Ethernet |
| Model | Description |
|---|---|
| UNITE-Y | UNITE™ annual subscription for 1 device, unlimited users and plants |
Included Hardware
- Voltage leads (5)
- Split-core Rogowski coils (4)
- RTD temperature sensors (2)
- Magnet mount
Featured Downloads
Brochures
| Title | Type | Size | |
|---|---|---|---|
 |
FEGRID-0036 Distribution Transformer Monitor Brochure.pdf | 5.13 MB | |
 |
FEGRID-0037 Distribution Transformer Monitor Datasheet.pdf | 1.25 MB | |
 |
FEGRID-0086 Transformer Life Prediction Brochure.pdf | 1.02 MB | |
 |
FEGRID-0087 DTM - Conservation Voltage Reduction Brochure.pdf | 0.38 MB | |
 |
FEGRID-0088 DTM - Energy Theft Detection Brochure.pdf | 0.98 MB | |
 |
FEGRID-0089 DTM - Maximizing Data Center and Crypto Mining Facility Uptime Whitepaper.pdf | 0.99 MB | |
 |
FEGRID-0074 DTM White Paper.pdf | 2.87 MB | |
 |
FEGRID-0017 FE Grid Academy Certified Installer Training Brochure.pdf | 13.13 MB |
Manuals
| Title | Type | Size | |
|---|---|---|---|
 |
10000008964 Distribution Transformer Monitor Install Guide.pdf | 2.61 MB |
Software
| Title | Type | Size | |
|---|---|---|---|
 |
DTM Ver 1.2.4 Update Files.zip | ZIP | 103.48 MB |