Marine Generator Protection Rela
SELCO A/S
Refurbished
SELCO T3100 Over Voltage Under Voltage Relay | Marine Generator Protection Relay | SELCO Voltage Monitoring Relay
The SELCO T3100 Over Voltage / Under Voltage Relay is a high-performance marine protection relay designed to continuously monitor generator voltage and automatically protect electrical power systems against abnormal voltage conditions. It combines over-voltage and under-voltage protection in a single compact module, making it an essential component of marine switchboards, generator control panels, and Power Management Systems (PMS).
Installed on commercial vessels and offshore installations worldwide, the T3100 continuously measures generator output voltage. If the voltage rises above or falls below the preset limits, the relay activates protective outputs to prevent damage to generators, transformers, motors, switchboards, and other critical electrical equipment.
The front panel allows engineers to adjust pickup voltage, hysteresis, and trip delay time, enabling precise configuration to match the vessel's electrical system requirements.
SM MARINE SERVICE™ supplies New, Reconditioned, and Fully Tested SELCO T3100 Protection Relays, together with marine generator protection equipment, spare parts, repair services, refurbishment, calibration, and worldwide technical support.
SELCO A/S
Denmark
Marine Over Voltage & Under Voltage Protection Relay
SM MARINE SERVICE™ maintains stock of SELCO generator protection relays, voltage monitoring relays, synchronizing controllers, power management modules, protection equipment, spare parts, and marine electrical automation systems. We provide worldwide supply, repair, refurbishment, calibration, troubleshooting, and technical support for shipowners, ship managers, shipyards, and marine engineers.
The SELCO T3100 Over Voltage / Under Voltage Relay is a high-performance marine protection relay designed to continuously monitor generator voltage and automatically protect electrical power systems against abnormal voltage conditions. It combines over-voltage and under-voltage protection in a single compact module, making it an essential component of marine switchboards, generator control panels, and Power Management Systems (PMS).
Installed on commercial vessels and offshore installations worldwide, the T3100 continuously measures generator output voltage. If the voltage rises above or falls below the preset limits, the relay activates protective outputs to prevent damage to generators, transformers, motors, switchboards, and other critical electrical equipment.
The front panel allows engineers to adjust pickup voltage, hysteresis, and trip delay time, enabling precise configuration to match the vessel's electrical system requirements.
SM MARINE SERVICE™ supplies New, Reconditioned, and Fully Tested SELCO T3100 Protection Relays, together with marine generator protection equipment, spare parts, repair services, refurbishment, calibration, and worldwide technical support.
SELCO A/S
Denmark
Marine Over Voltage & Under Voltage Protection Relay
SM MARINE SERVICE™ maintains stock of SELCO generator protection relays, voltage monitoring relays, synchronizing controllers, power management modules, protection equipment, spare parts, and marine electrical automation systems. We provide worldwide supply, repair, refurbishment, calibration, troubleshooting, and technical support for shipowners, ship managers, shipyards, and marine engineers.
The SELCO T3100 is a marine-grade voltage protection relay designed to continuously monitor AC generator voltage and automatically protect electrical systems against dangerous over-voltage and under-voltage conditions.
It is widely used in marine generator control panels, main switchboards, emergency switchboards, and Power Management Systems (PMS) to prevent electrical damage caused by unstable generator voltage. The relay continuously compares the measured voltage with preset operating limits. If the voltage exceeds or drops below the configured values, the relay activates protective outputs to trip the generator breaker, generate alarms, or prevent synchronization until normal voltage is restored.
The SELCO T3100 is trusted throughout the marine industry for its reliability, fast response, and long operational life.
The SELCO T3100 continuously supervises generator output voltage.
The relay continuously measures generator line voltage.
The measured voltage is compared with the preset:
If abnormal voltage persists beyond the selected delay period, the protection relay activates.
Depending on the system configuration, the relay can:
Once voltage returns to the normal operating range, the relay automatically resets (if configured) or allows normal operation after manual acknowledgement.
The SELCO T3100 is commonly installed on:
After years of continuous service, engineers may experience:
If the relay generates alarms or trips unexpectedly, inspect:
To maximize operational reliability:
Routine maintenance improves protection accuracy and reduces unexpected generator shutdowns.
The SELCO T3100 remains one of the industry's preferred voltage protection relays because it provides:
The SELCO T3100 continuously monitors generator voltage and protects the electrical system against over-voltage and under-voltage conditions.
It is commonly installed in:
Yes. Most faults involving relay contacts, power supply circuits, PCBs, terminal blocks, and adjustment circuits can be repaired or refurbished by qualified marine automation engineers.
Yes. SM MARINE SERVICE™ supplies:
Yes. We provide complete repair, refurbishment, functional testing, calibration, troubleshooting, commissioning support, and worldwide technical assistance.
The SELCO T3100 Over Voltage / Under Voltage Relay is a high-performance marine voltage protection relay designed to monitor generator output voltage continuously and protect electrical equipment against abnormal voltage conditions. With adjustable protection settings, fast response, and proven marine reliability, it is an essential component of marine generator control and Power Management Systems.
For installation, operation, and maintenance, refer to:
SM MARINE SERVICE™ is a trusted supplier of marine electrical automation, generator protection systems, Power Management Systems (PMS), navigation equipment, engine automation, fire detection systems, and genuine marine spare parts.
We provide:
Bangladesh Office:
Samir Market, DT Road, Pahartali, Beside CDA Market, Chattogram, Bangladesh
China Warehouse & Support Center:
Shanghai, China
Website: www.smmarineservice.com
Email: info@smmarineservice.com
WhatsApp: +8801818929292
Marketing Contact: Nazmul Hasan Bhuiyan
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