Franklin Grid Distribution Transformer Monitor
POAExcluding Tax
Description
Description
The Franklin Grid 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.
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.
Specification
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.
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