The SELCO T3200 insulation monitoring relay is your best choice for ensuring the safety of your ship’s electrical system. Its core function is to continuously monitor the insulation status of the ship’s electrical system and issue an alarm signal promptly once an insulation fault is detected. It can not only effectively prevent insulation faults, but also extend the service life of the equipment and reduce maintenance costs.
Features of SELCO T3200
- Dual Output Relays: Individually control different alarm signals for flexible alarm management.
- Dual Analog Outputs: Seamlessly integrate with other devices for data acquisition and remote monitoring.
- Comprehensive Protection: Continuously monitor two isolated systems to safeguard the ship’s electrical system.
- Standard Size: Complies with standard switchboard dimensions for easy installation.
Specification of SELCO T3200
| Parameters | Value |
| Insulation level | 0 – 5MΩ |
| Delay | 1 – 10 sec. |
| Max. voltage | 660V |
| Voltage range | 80 – 110% |
| Consumption Max. | 2VA |
| Frequency range | 45 – 65Hz |
| Measuring voltage | 15V DC |
| Internal resistance | 200kΩ |
| Instrument output | 0 – 1mA |
| Instrument resistance Max. | 100Ω |
| Output relays | Normally de-energized |
| Contact ratings AC | 400V, 2A, 250VA |
| DC | 110V, 2A, 100W |
| Overall accuracy | ±5% of preset value |
| Operating temperature | -20°C to +70°C |
| Dielectric test | 2500V, 50Hz |
| EMC | According to IEC/EN 61000-6-1/2/3/4 |
| Approvals | Certified by major marine classification societies |
| Burn-in | 50 hours before the final test |
| Enclosure material | Polycarbonate. Flame retardant |
| Weight | 0.5kg |
| Dimensions | 70 x 100 x 115mm (H x W x D) |
| Installation | 35mm DIN rail or 4mm (3/16”) screws |
| Accessories | Megohmmeter |
Working Principle of Marine Insulation Monitoring Relay
Marine insulation monitoring usually adopts the DC superposition method. A DC voltage is superimposed in the circuit under test, and the insulation resistance is calculated by measuring the leakage current. When the insulation resistance drops to a certain value, the insulation performance deteriorates, and the system will issue an alarm signal.
Application of SELCO T3200
The SELCO T3200 Insulation Monitoring Relay is designed for continuous insulation monitoring on three-phase insulated networks aboard ships. Its primary applications include:
Ship Power Systems
Busbars: Monitor the insulation of main power distribution points.
Switchboards: Assess the insulation of electrical distribution panels.
Equipment: Monitor the insulation of various electrical devices, such as motors, generators, and transformers.
Ship Automation Systems
Automation Equipment: Monitor the insulation of controllers, sensors, actuators, and other automation components.
Ship Communication Systems
Communication Equipment: Assess the insulation of radios, antennas, modems, and other communication devices.
By continuously monitoring the insulation of these critical components, the T3200 helps ensure the safety, reliability, and efficiency of shipboard electrical systems.
SELCO T3200 Wiring
