400+
protection relay installations
ABB, Siemens, SEL
OEM trained specialists
24/7
protection relay support
Experienced
team – 15+ years

⚡ generator protection relay systems (gprs)

Differential · Overcurrent · Earth Fault · Reverse Power

  • ✓ Generator Differential Protection (87G) – ABB, Siemens, SEL, GE
  • ✓ Overcurrent & Earth Fault Protection (50/51, 50N/51N) – phase & ground faults
  • ✓ Reverse Power Relay (32R) – preventing motoring of generator
  • ✓ Loss of Excitation Protection (40) – field failure protection
  • ✓ Under/Over Voltage Protection (27/59) – voltage abnormalities
  • ✓ Under/Over Frequency Protection (81U/81O) – frequency monitoring
  • ✓ Negative Phase Sequence Protection (46) – unbalanced loads
  • ✓ Stator Earth Fault Protection (64G) – high impedance / low impedance
  • ✓ Rotor Earth Fault Protection (64R) – field winding insulation
  • ✓ Thermal Overload Protection (49) – generator heating
  • ✓ Breaker Failure Protection (50BF) – back-up tripping
  • ✓ Integration with PMS & SCADA – Modbus, Profibus, IEC 61850

Experienced with ABB, Siemens, Schneider, GE, SEL, Woodward, Deif, Comap, Basler, ZIV – our team delivers.

🔌 protection relay manufacturers

ABB · Siemens · SEL · GE · Schneider · Woodward

Major Protection Relay Series

  • ✓ ABB – REM 610, REM 615, REG 615, REF 601, REF 615, RED 615
  • ✓ Siemens – 7UM62, 7UM85, 7SJ62, 7SJ64, 7SJ80, 7RW80, 7VE60
  • ✓ SEL (Schweitzer Engineering Laboratories) – SEL-300G, SEL-487E, SEL-700G, SEL-710, SEL-751
  • ✓ GE Grid Solutions – G60, T60, F60, D60, L90, 345, 345G, 750/760
  • ✓ Schneider Electric – Sepam 1000+, Sepam 2000, Sepam 40, Sepam 80, Micom P127, P143, P145, P241
  • ✓ Woodward – easYgen-1000, 2000, 3000, 3500 (integrated protection)
  • ✓ Deif – AGC 100, AGC 150, AGC 200, AGC 4xx (with protection)
  • ✓ Comap – InteliGen, InteliSys NTC (integrated protection)
  • ✓ Basler Electric – BE1-11g, BE1-25, BE1-50/51, BE1-59, BE1-27
  • ✓ ZIV – 5G, 6G, 7G protection relays

Protection Functions & Applications

  • ✓ Generator Differential (87G) – primary protection for stator faults
  • ✓ Overcurrent (50/51) & Earth Fault (50N/51N) – backup protection
  • ✓ Reverse Power (32R) – turbine/generator motoring protection
  • ✓ Loss of Excitation (40) – field failure detection
  • ✓ Voltage Protection (27/59) – under/over voltage
  • ✓ Frequency Protection (81U/81O) – under/over frequency
  • ✓ Stator Earth Fault (64G) – 95% / 100% stator protection
  • ✓ Rotor Earth Fault (64R) – field winding insulation monitoring
  • ✓ Thermal Overload (49) – RTD/thermocouple input
  • ✓ Breaker Failure (50BF) – back-up tripping logic

🔧 generator makes & protection requirements

We Configure Protection Relays for These Gensets

Main Propulsion & Auxiliary Generators

  • ✓ MAN – 7L21/31, 9L23/30H, 10L23/30H, 12V28/33D, 14V48/60
  • ✓ Wärtsilä – 4L20, 6L20, 6L26, 8L26, 9L32, 12V32, 16V32
  • ✓ Caterpillar – C4.4, C6.6, C7.1, C9.3, C18, C32, 3406, 3412, 3508, 3512, 3516
  • ✓ MTU – 8V396, 12V396, 16V396, 8V2000, 12V2000, 16V2000, 12V4000, 16V4000
  • ✓ MAK – M20, M25, M32, M43 (genset versions)

Emergency & Auxiliary Gensets

  • ✓ Yanmar – 6EY17, 6EY22, 8EY22, 12EY22, 6HY, 8HY series
  • ✓ ABC – 6DZC, 8DZC, 12DZC, 16DZC (1000-4000kW gensets)
  • ✓ Daihatsu – 6DK-20, 8DC-32, 12DC-32, 16DC-32
  • ✓ Scania – DI09, DI13, DI16, DI16 071M, DI16 082M
  • ✓ Volvo Penta – TAD1341, TAD1342, TAD1641, TAD1642, TAD1643
  • ✓ Cummins – QSK19, QSK38, QSK45, QSK60, KTA19, KTA38, KTA50
  • ✓ Kohler – 20-2000kW marine emergency gensets
  • ✓ Mitsubishi – S6, S8, S12, S16 series
  • ✓ Niigata – 6L, 8L, 12L series
  • ✓ Bergen – KRM, KRG, C25:33L, B32:40

🛡️ protection functions (ANSI codes)

Complete Generator Protection Suite

Primary Protection Functions

  • ✓ 87G – Generator Differential Protection – phase & ground differential
  • ✓ 64G – Stator Earth Fault Protection – 95% / 100% stator winding
  • ✓ 64R – Rotor Earth Fault Protection – field winding insulation
  • ✓ 40 – Loss of Excitation – field failure protection
  • ✓ 32R – Reverse Power Protection – motoring protection
  • ✓ 46 – Negative Phase Sequence – unbalanced load protection
  • ✓ 49 – Thermal Overload – RTD / thermocouple based

Backup & Auxiliary Functions

  • ✓ 50/51 – Phase Overcurrent – instantaneous & time-delayed
  • ✓ 50N/51N – Earth Fault Overcurrent – ground fault protection
  • ✓ 27/59 – Under/Over Voltage – voltage window protection
  • ✓ 81U/81O – Under/Over Frequency – frequency monitoring
  • ✓ 50BF – Breaker Failure Protection – backup tripping
  • ✓ 25 – Synchronism Check – paralleling protection
  • ✓ 21 – Distance Protection – for long transmission lines

🔧 protection relay testing & commissioning

Primary Injection · Secondary Injection · Dynamic Testing

Testing Services

  • ✓ Primary Injection Testing – full load current injection
  • ✓ Secondary Injection Testing – using Omicron, Manta, SVERKER
  • ✓ Dynamic Response Testing – load rejection, fault simulation
  • ✓ Protection Relay Calibration – curve verification
  • ✓ CT Polarity & Ratio Verification
  • ✓ VT Connection & Phase Angle Checks
  • ✓ Communication Protocol Testing – Modbus, IEC 61850, Profibus

Commissioning & Maintenance

  • ✓ Relay Configuration & Setting Calculation
  • ✓ Coordination Studies – time-current grading
  • ✓ Logic & Scheme Testing – trip matrix verification
  • ✓ Battery & DC Supply Monitoring
  • ✓ Alarm & Event Log Verification
  • ✓ Periodic Maintenance & Retrofits
  • ✓ Firmware Upgrades – for all major relay makes

🔄 protection relay retrofit & upgrade

Modernization · Legacy Electromechanical Relays · Digital Retrofit

  • ✓ Legacy electromechanical relay replacement – with modern numerical relays
  • ✓ Static relay to digital relay upgrade – ABB, Siemens, SEL retrofit kits
  • ✓ Protection panel re-engineering & wiring
  • ✓ CT/VT replacement & upgrading for new relay inputs
  • ✓ Communication protocol upgrade – add Modbus, IEC 61850
  • ✓ Integration with existing PMS/SCADA
  • ✓ Space heater & auxiliary relay replacement
  • ✓ Relay test & commissioning after retrofit
  • ✓ Class approval support – ABS, DNV, LR, BV, RINA
  • ✓ Spare parts supply – for all major protection relay makes

🔌 pms, ias & scada integration

Seamless Integration with Ship Automation

PMS Integration

  • ✓ Kongsberg K-Chief 700, K-Pos – protection relay integration
  • ✓ Norcontrol BridgeLine, NautoScan – alarm & trip monitoring
  • ✓ Valmet DAMATIC, DNA – generator protection data
  • ✓ ABB Ability, 800xA – protection relay integration
  • ✓ Siemens S7-1500, PCS 7 – PLC based integration
  • ✓ Modbus TCP/RTU, Profibus DP, IEC 61850 – communication protocols

IAS & SCADA Integration

  • ✓ Remote monitoring – trip & alarm status on bridge/ECR
  • ✓ Data logging & trending – protection events
  • ✓ Waveform & fault recording analysis
  • ✓ Integration with Lyngsø, Selco, Comap, Deif
  • ✓ Web-based monitoring – secure remote access
  • ✓ Alarm management & reporting

🌍 gprs service coverage

Vessels We Serve with Protection Relay Expertise

Vessel Types

  • ✓ Tankers (VLCC, ULCC, Aframax, Suezmax, Product)
  • ✓ Bulk Carriers (Capesize, Panamax, Supramax, Handysize)
  • ✓ Container Vessels (Post-Panamax, Neo-Panamax, ULCS)
  • ✓ LNG / LPG Carriers (Moss, Membrane types)
  • ✓ Offshore Vessels (PSV, AHTS, OSCV, MPSV, DSV)
  • ✓ Drilling Rigs (Jack-up, Semi-sub, Drillships)
  • ✓ FPSO / FLNG / FSRU / FSO
  • ✓ Ro-Ro / PCTC / Car Carriers / RoPax
  • ✓ Cruise Ships / Ferries / Passenger Vessels
  • ✓ Naval Vessels / Coast Guard / Patrol Boats
  • ✓ Mega Yachts / Superyachts
  • ✓ Dredgers / Heavy Lift Vessels / Cable Layers

Global Service Locations

  • ✓ UAE – Dubai, Abu Dhabi, Fujairah, Sharjah, Ras Al Khaimah
  • ✓ India – Mumbai, Kochi, Chennai, Kandla, Vizag, Paradip, Kolkata
  • ✓ Singapore – Jurong, Tuas, Sembawang, Keppel
  • ✓ Middle East – Qatar (Doha), Saudi (Dammam, Jeddah), Kuwait, Bahrain, Oman
  • ✓ Europe – Rotterdam, Hamburg, Bremen, Antwerp, Piraeus, Marseille, Genoa
  • ✓ Asia – South Korea (Busan, Ulsan), China (Shanghai, Ningbo, Hong Kong), Japan (Yokohama, Kobe)
  • ✓ Africa – Durban, Cape Town, Lagos, Mombasa
  • ✓ Americas – Houston, New Orleans, Rio de Janeiro, Panama, Vancouver
  • ✓ Worldwide – all major ports and shipyards, 24/7 response

⚡ 24/7 generator protection relay support

Need Generator Protection Relay
System service, retrofit or testing?

Our GPRS engineers provide complete installation, configuration, testing, retrofit, and repair services for all generator protection relay systems – Differential, Overcurrent, Earth Fault, Reverse Power, Loss of Excitation. Available 24/7 worldwide. Class approved solutions for all major relay makes.

Email: service@seanav.org | Website: www.seanav.org | 24/7 Emergency: +971 50 123 4567