⚡ TRIP & PROTECTION SYSTEMS

Trip & Protection
Systems

Overspeed Trip · Overload Trip · Reverse Power Trip · Differential Protection · Earth Fault · Short Circuit · Thermal Overload · Under Voltage · Over Voltage — Complete service, calibration, testing, and repair for all marine trip and protection relays.

Request service Contact engineers

1200+ protection relays

650+ vessels protected

OEM trained engineers

24/7 emergency trip response

🔍 trip system types

Comprehensive Trip & Protection Services

We service all critical trip and protection systems for marine applications

Generator & Power Protection

✓ Reverse Power Trip Relays – Generator anti-motoring protection
✓ Overload Trip Relays – Thermal overload, current sensing
✓ Short Circuit Protection – Instantaneous overcurrent trips
✓ Earth Fault Protection – Ground fault detection and trip
✓ Differential Protection – Generator differential relays
✓ Under/Over Voltage Protection – Voltage sensing relays
✓ Under/Over Frequency Protection – Frequency monitoring relays
✓ Loss of Excitation Protection – Generator field failure trip

Engine & Mechanical Protection

✓ Overspeed Trip Systems – Mechanical & electronic overspeed devices
✓ Overspeed Protection Relays – Woodward, Regulateurs Europa, Heinzmann
✓ Emergency Shutdown Trip – ESD initiation and monitoring
✓ Low Lubrication Pressure Trip – Pressure switch and transmitter trips
✓ High Temperature Trip – Jacket water, exhaust, bearing temperature
✓ Vibration Trip – High vibration shutdown systems
✓ Over torque / Overload Trip – Shaft power monitoring

Motor & Feeder Protection

✓ Motor Protection Relays – Thermal overload, stall protection
✓ Phase Failure / Phase Reversal – Phase sequence monitoring
✓ Undercurrent / No Flow Trip – Pump protection
✓ Feeder Protection Relays – Overcurrent, earth fault
✓ Transformer Protection – Differential, overcurrent, earth fault
✓ Busbar Protection – Busbar differential protection

Specialized Marine Protection

✓ Thruster Motor Protection – Overload, stall, temperature
✓ Bow Thruster Trip Systems – Thermal and overload protection
✓ Steering Gear Motor Protection – Overload, phase failure
✓ Winch and Crane Protection – Overload, overspeed, emergency stop
✓ CPP Pitch Control Protection – Overload, limit switches
✓ Shaft Generator Protection – Reverse power, over/under frequency

🏭 relay manufacturers

Protection Relay Specialists

Experience with all leading protection relay brands and models

✓ Woodward – ProAct, 2301A, EGCP, overspeed relays
✓ Regulateurs Europa – Overspeed trips, governors
✓ Heinzmann – Electronic speed switches, overspeed
✓ Siemens – Siprotec, 7SJ, 7UM, 7RW relays
✓ ABB – REF, REM, REG, SPA series protection relays
✓ Schneider Electric – Sepam, Micom, C60, iC60
✓ Basler Electric – BE1 series, DECS, overcurrent relays
✓ GE Grid Solutions – Multilin, UR series, 750/760
✓ Eaton – Cutler-Hammer, IQ series relays
✓ Rockwell Automation – Allen-Bradley, Guardmaster
✓ Danfoss – VLT protection, motor protection relays
✓ Omron – Safety relays, protection relays
✓ Finder – Protection relays, monitoring relays
✓ Phoenix Contact – Monitoring relays, safety relays
✓ Murphy – Swichgage, protection panels, overspeed
✓ Barksdale – Pressure switches for trip systems
✓ United Electric – Temperature & pressure switches
✓ SOR – Pressure, temperature, flow switches
✓ Autronica – Temperature monitoring, alarm units
✓ Kongsberg – Automation & protection systems

⚡ overspeed protection

Overspeed Trip System Specialists

Mechanical Overspeed Trips

✓ Woodward – Mechanical overspeed governors, trip devices
✓ Regulateurs Europa – Overspeed trip units, mechanical governors
✓ Heinzmann – Mechanical speed sensors, trip mechanisms
✓ MAN B&W – Engine overspeed protection systems
✓ Wärtsilä – Overspeed trip calibration and testing
✓ Sulzer – Mechanical overspeed devices
✓ Overhaul, calibration, and testing of mechanical trip mechanisms
✓ Spring tension adjustment and trip speed verification

Electronic Overspeed Protection

✓ Woodward ProAct – Digital overspeed protection modules
✓ Woodward 2301A – Load sharing and speed control with overspeed
✓ Woodward EGCP – Generator control with overspeed protection
✓ Regulateurs Europa – Electronic overspeed relays
✓ Heinzmann – Electronic speed switches, overspeed modules
✓ Murphy – Electronic overspeed switches, TATTLETALE
✓ Dynalco – Magnetic pickups, overspeed protection
✓ Calibration, programming, and testing of electronic overspeed devices

⚡ generator protection

Generator Protection Relay Services

Generator Relay Types

✓ Reverse Power Relays – Siemens 7RW, ABB SPA, Basler BE1-25
✓ Overcurrent Relays – Siemens 7SJ, ABB REF, Schneider Sepam
✓ Earth Fault Relays – Siemens 7SJ, ABB REM, Basler BE1-51
✓ Differential Relays – Siemens 7UM, ABB REG, GE Multilin 750
✓ Voltage & Frequency Relays – Basler BE1-81, BE1-27/59
✓ Loss of Excitation Relays – Siemens 7UM, ABB REG, Basler BE1-40
✓ Negative Phase Sequence Relays – Siemens 7SJ, ABB REF
✓ Stator Earth Fault Protection – 100% stator earth fault

Generator Make & Models

✓ Caterpillar – SR4, SR5 generators with protection relays
✓ Cummins – Generator sets with PowerCommand protection
✓ MTU – Marine gensets with integrated protection
✓ MAN – Auxiliary generator sets
✓ Wärtsilä – Auxpac generator systems
✓ Yanmar – Marine generator engines
✓ Volvo Penta – Marine genset protection
✓ Scania – Generator protection systems
✓ Leroy-Somer – Alternators with protection relays
✓ Stamford – Alternators, AVR, protection devices

⚙️ motor protection

Motor Protection Relay Services

Motor Protection Relay Types

✓ Thermal Overload Relays – Siemens 3RB, ABB Tmax, Eaton Moeller
✓ Electronic Motor Protection – Siemens SIRIUS, ABB UM/C, Schneider TeSys
✓ Phase Failure / Phase Sequence – Monitoring relays
✓ Undercurrent / No Flow Protection – Pump protection relays
✓ Stall Protection / Jam Protection – Motor protection relays
✓ PTC Thermistor Protection – Motor winding temperature
✓ Earth Fault Protection – Motor ground fault relays
✓ Insulation Monitoring – Ground fault detection systems

Marine Motor Applications

✓ Pump Motors – Ballast, cargo, fire, cooling water
✓ Fan Motors – Engine room ventilation, AC fans
✓ Compressor Motors – Air compressors, refrigeration
✓ Winch & Crane Motors – Deck machinery protection
✓ Thruster Motors – Bow and stern thruster protection
✓ Steering Gear Motors – Rudder actuation protection
✓ Purifier Motors – Fuel and lube oil purifiers
✓ Hydraulic Pump Motors – Power pack protection

📊 testing & calibration

Professional Trip Testing Services

Primary Injection Testing

Current injection testing of overcurrent and earth fault relays. Verification of trip times and characteristics.

Secondary Injection Testing

Precision testing of protection relays using Omicron, Megger, and ISA test sets. Curve verification.

Functional Trip Testing

End-to-end testing of complete trip circuits including sensors, relays, and circuit breakers.

Test Equipment & Capabilities

✓ Omicron CMC 356
✓ Megger SVERKER 780/900
✓ ISA DRTS 33/66
✓ Programmable test sets
✓ Primary injection units
✓ Secondary injection units
✓ Relay test software
✓ Calibration certificates

Testing Standards & Documentation

✓ IEC 60255 relay testing standards
✓ IEEE C37.90 relay standards
✓ Class society requirements (DNV, ABS, LR, BV)
✓ Detailed test reports with trip times
✓ Calibration certificates traceable to standards
✓ As-left / as-found documentation

🚢 vessel applications

Vessels We Serve

✓ Container Vessels – Feeder to ULCS
✓ Bulk Carriers – Handy to Capesize
✓ Tankers – Crude, chemical, product
✓ LNG/LPG Carriers – Gas carriers
✓ PSV – Platform Supply Vessels
✓ AHTS – Anchor Handling Tug Supply
✓ Drillships – Deepwater drilling
✓ Semi-submersibles – Drilling rigs
✓ Jack-up Rigs – Self-elevating units
✓ FPSO/FSO – Floating production
✓ DP Vessels – Dynamically positioned
✓ Ferries & Ro-Ro – Passenger & cargo
✓ Tugs – Harbour & ocean-going
✓ Dredgers – Hopper & cutter suction
✓ Naval Vessels – Defense applications
✓ Mega-yachts – Luxury vessels
✓ Offshore Platforms – Fixed & floating
✓ Wind Farm Vessels – SOV, CTV

👥 our team

Experienced Protection Relay Engineers

Technical Expertise

✓ Average 15+ years electrical protection experience
✓ OEM-trained on Siemens, ABB, Basler, Woodward systems
✓ Certified relay test engineers (Omicron, Megger)
✓ Class survey and certification specialists
✓ Protection coordination studies expertise
✓ Worldwide mobilization within 24-48 hours

Recent Projects

✓ Siemens 7SJ overcurrent relay testing – 3x VLCC (UAE)
✓ Woodward overspeed trip calibration – PSV (Singapore)
✓ ABB REF differential relay commissioning – Drillship (Brazil)
✓ Basler BE1-25 reverse power testing – Container vessel (Netherlands)
✓ Generator protection coordination – FPSO (West Africa)
✓ Motor protection relay replacement – Bulk carrier (India)

🌍 global presence

Worldwide Service Locations

✓ UAE – Dubai, Abu Dhabi, Fujairah
✓ India – Mumbai, Kochi, Chennai, Kolkata
✓ Singapore – Jurong, Tuas, Keppel
✓ Netherlands – Rotterdam, Amsterdam
✓ Norway – Bergen, Stavanger, Oslo
✓ Greece – Piraeus, Athens
✓ UK – Aberdeen, London, Southampton
✓ USA – Houston, New Orleans, Norfolk
✓ Brazil – Rio de Janeiro, Santos
✓ China – Shanghai, Hong Kong, Shenzhen
✓ South Korea – Busan, Ulsan
✓ Japan – Tokyo, Yokohama, Kobe
✓ Middle East – Bahrain, Qatar, Kuwait
✓ Africa – Nigeria, South Africa, Egypt
✓ Australia – Perth, Sydney, Melbourne
✓ Any major port worldwide – 24/7 response

⚡ 24/7 emergency trip response

Protection relay issues?
Unwanted trips? Relay failures?

Our protection relay specialists are available 24/7 for emergency response worldwide. Immediate mobilization for critical trip system failures, relay testing, and protection coordination.

Request emergency service Contact engineers

Email: service@seanav.org | Website: www.seanav.org | 24/7 Emergency: +971 XX XXX XXXX

Trip & Protection
Systems