GE 845-E-P1-H1-G1-H-N-N-A-A -T-M-S-P-F-B-3E-T-W-B-4 transformer protection

Product Description

GE Vernova (GE Grid Solutions) 845-E-P1-H1-G1-H-N-N-A-A-T-M-S-P-F-B-3E-T-W-B-4 is a custom configured IED of GE 845 transformer protection series. This long ordering code is fully configurable for integrated protection, control and disturbance recording of power transformers, both oil-immersed and dry-type. Code E = standard application, P1/H1/G1 define CT/PT analog inputs, H denotes auxiliary power supply, 3E & B-4 define firmware and hardware / enclosure options. It comes with complete transformer protection logic, supports IEC61850 and GOOSE, disturbance recorder and sequence of event logging, with local LCD HMI. It is widely used for transformer protection in power plants and substations.

Note: GE 845 is transformer protection relay, different from Metrix 845 eddy current probe. They share similar number naming but belong to completely separate product families.

Specifications

• Model: 845-E-P1-H1-G1-H-N-N-A-A-T-M-S-P-F-B-3E-T-W-B-4
• Product Type: GE Vernova 845 Transformer Protection IED
• Application: Power transformer protection (oil / dry type)
• Protection Functions: 87T restrained differential, overcurrent, earth fault, overload, thermal supervision, voltage/frequency protection, breaker failure, Buchholz hard-wired input
• Measurement: 3-phase current, voltage, active/reactive power, energy, harmonic monitoring
• Auxiliary Supply: H code: 110~250VDC / 110~230VAC wide range AC/DC
• Analog Input: CT secondary 1A/5A, PT voltage inputs
• Communication: IEC61850 Ed.2, GOOSE, Modbus, DNP3; front USB service port
• Recording: Disturbance recorder, SOE sequence of events, fault history
• HMI: Front LCD + keypad for local setting and fault viewing
• Mounting: Switchgear panel mount
• Operating Temperature: -40℃ ~ +70℃
• Storage Temperature: -40℃ ~ +85℃
• Certifications: CE, KEMA, IEC60255, IEC61850
• Configuration Software: GE EnerVista 845 Setup for parameterization and fault waveform analysis

Applications

1. Main transformer & station service transformer differential and backup protection in substations;
2. Medium voltage transformer protection for captive power plants, chemical and metallurgy facilities;
3. Transformer IED for solar & wind farm booster stations;
4. Digital substation projects with GOOSE tripping and network time synchronization;
5. Maintenance replacement, spare stock and retrofit of legacy GE 845 protection relays.

Series GE 845 Models

• 845-E-P1-H1-G1-H-N-N-A-A-T-M-S-P-F-B-3E-T-W-B-4 (this model, transformer protection IED)
• 845-E-P5-H5-G5 Multi-winding transformer variant
• 845 Standard base transformer protection relay
• 345 Series GE Feeder Protection IED
• 745 Generator Protection IED
• 650 Series Feeder Protection Relays