Product Description
GE Multilin 845-EPIH1G1HNNAANMSPFASENNBN (GE Vernova) is the 845 Transformer Protection & Management System of Multilin Series 8, with full long order code. It provides protection, control, monitoring and management for 2-winding and 3-winding power & distribution transformers. Equipped with color LCD HMI and built-in FlexLogic programmable logic engine, it integrates full set of transformer protection elements. It supports breaker health monitoring, trip circuit supervision, DGA dissolved gas data interface, fault waveform recording and SOE sequence of events. Multi-protocol communication and abundant DI/DO & analog expansion are available. Continuous hardware self-diagnosis can generate transformer health report. This model is active product of GE Vernova, widely used as equipment and spare part for transformer protection in power and petrochemical substations.
Technical Parameters
- Model: 845-EPIH1G1HNNAANMSPFASENNBN
- Brand: GE Multilin (GE Vernova)
- Product Type: 845 Transformer Protection & Management Relay
- Series: Multilin 845 Transformer Protection System
- Application: 2-winding & 3-winding distribution / power transformers
- Inputs: 3-phase current, 3-phase voltage, ground current; CT 1A/5A, VT voltage input
- Protection Elements: Transformer differential 87T, instantaneous / definite time overcurrent 50/51, earth fault 50G/51G, zero-sequence protection, overexcitation, over/undervoltage, frequency protection, breaker failure 50BF, VT fuse failure detection, FlexLogic programmable logic
- Additional Monitoring: Breaker operation counter, arcing energy, open/close timing, spring charge monitoring, trip/close circuit supervision, DGA oil gas data interface
- Data Storage: Fault oscillography, SOE event logging, up to 365 transformer health trend records
- Local HMI: Color LCD, navigation keys, status LED, front-panel USB port
- Communication Ports: Dual Ethernet, RS485; Protocols: Modbus TCP/RTU, DNP3.0, IEC 60870-5-103/104
- I/O: Digital inputs DI, relay output contacts Form A/Form C, expandable 4-20mA analog
- Auxiliary Power: Wide range DC/AC (defined by order code)
- Mounting: Cabinet flush panel mounting
- Operating Temperature: -40℃ ~ +85℃
- Protection Class: IP54 front panel, IP20 rear terminals
- Certifications: CE, UL, IEC power protection standards
- Product Status: Active production, spare part for transformer protection
Product Application
It is deployed for main transformers and station service distribution transformers in power plants, utility substations, petrochemical, metallurgy and large industrial plants. It acquires CT/VT signals in real time and executes differential, overcurrent, earth fault and full relay protection functions. It monitors health status of breakers and transformers, trips to isolate faulty transformer during faults. It communicates with DCS/SCADA to transmit measurements, alarms, oscillography and events. FlexLogic supports customized interlock logic. Widely used for new substation projects and retrofit replacement of legacy transformer protection relays.
Series Models
845-EPIH1G1HNNAANMSPFASENNBN, 845-E-P5-H5-G5, 845-E-P1-H1-G1, 845-5P5H5G5, 845 communication modules
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