Transformer Protection | GE Multilin 345-E-P1-G1-H-E-M-N-N-3E-D-N
Manufacturer: GE Fanuc
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Part Number: 345-E-P1-G1-H-E-M-N-N-3E-D-N
Condition：New with Original Package
Product Type: Transformer Protection
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description – GE Multilin 345-E-P1-G1-H-E-M-N-N-3E-D-N
Overview
The GE Multilin 345-E-P1-G1-H-E-M-N-N-3E-D-N is a high-performance transformer protection relay designed for medium and high-voltage power systems. It offers differential protection, advanced monitoring, and flexible automation features that support safe transformer operation. Moreover, the relay helps operators identify issues early through precise fault recording and real-time diagnostics. Its rugged hardware ensures reliable performance in harsh industrial locations.
Functional Highlights
This relay delivers a broad range of transformer protection functions, allowing facilities to reduce risks linked to faults and abnormal operating conditions. In addition, its integrated breaker control and interlocking features support efficient substation automation. The relay also includes IEC 61850 communications, enabling seamless integration into modern digital substations. Therefore, users benefit from improved system visibility and faster decision-making during fault events.
Technical Specifications
| Specification | Details |
|---|---|
| Model / Part Number | 345-E-P1-G1-H-E-M-N-N-3E-D-N |
| Series | GE Multilin 345 Transformer Protection Relay |
| Type | Transformer Protection and Monitoring Relay |
| Protection Functions | Differential, restricted earth fault, phase/ground overcurrent, breaker failure, over/under voltage, over/under frequency, over-fluxing |
| Inputs | CT and VT inputs for transformer measurement |
| Control Functions | Breaker control, reclosing, interlocking, synchronism check |
| Monitoring | Oscillography, event recording, disturbance analysis, thermal monitoring |
| Communication | IEC 61850, Modbus TCP/IP, DNP3 for remote supervision |
| Power Supply | 24 VDC |
| Operating Temperature | –40 °C to +70 °C |
| Dimensions | 100 mm × 80 mm × 20 mm |
| Weight | 8 lbs (3.6 kg) |
| Certifications | CE, UL, CSA, IEC |
FAQ
Q1: What types of transformers does the GE Multilin 345 protect?
It supports medium-voltage and high-voltage power transformers used in industrial and utility networks.
Q2: Does it support modern communication protocols?
Yes, it includes IEC 61850, Modbus TCP/IP, and DNP3 for flexible system integration.
Q3: Is the relay suitable for digital substations?
Absolutely. Its IEC 61850 support enables easy alignment with digital substation architectures.
Q4: What protection functions are most commonly used?
Differential protection, restricted earth fault, overcurrent, and over-fluxing are widely applied.
Q5: Can it record disturbances for diagnostic purposes?
Yes, it provides oscillography and detailed event records for post-fault analysis.