GE Multilin 339-E-P5-G5-H-R-S-N-P-3E-D-H is a digital integrated protection relay under GE Vernova Multilin 3 Series, officially designed for comprehensive protection and control of medium voltage feeders and small & medium asynchronous motors. Adopting industry-proven drawout pluggable structure, it integrates complete protection logic, power metering, fault oscillography, multi-protocol communication and local operation functions. This customized model is equipped with 5A phase current sampling, 5A ground fault current sampling, wide-range universal AC/DC power supply, extended IO contacts and multi-channel fiber Ethernet communication modules. It can be directly connected to cabinet feeder circuits and drive industrial equipment such as fans, water pumps and compressors. Relying on original factory motor thermal model algorithm and millisecond-level event recording function, it realizes full-lifecycle monitoring of electrical equipment, suitable for new power distribution systems and renovation projects of old switchgears. No extra expansion modules are required to deploy full basic protection logic for feeders and motors.
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Full Model Code Breakdown
Complete model code: 339-E-P5-G5-H-R-S-N-P-3E-D-H
339: Series code, Multilin 3 Series integrated feeder & motor protection relay
E: Front panel HMI, standard English LCD keypad panel with programmable status LEDs
P5: 3-phase phase current input, 5A secondary CT rating
G5: Zero-sequence ground current input, 5A ground CT secondary rating
H: Auxiliary power supply, universal wide range 110~230V AC / 110~250V DC
R: Expanded IO layout, 10 digital inputs, 7 relay outputs plus 3 Pt100 RTD temperature channels
S: Standard protection logic package including overcurrent, ground fault, phase unbalance, locked rotor, underpower, startup limitation and other protection elements
N: Standard indoor coating without special anti-corrosion treatment
P: Full metering function for real-time measurement of 3-phase voltage, current, power, energy and harmonic distortion
3E: Communication expansion module, rear copper Ethernet + MTRJ fiber dual ports compatible with multiple power protocols
D: Mechanical structure, Drawout pluggable cabinet design
H: Standard indoor configuration without explosion-proof or low-temperature customized options
Core Product Advantages
Applicable Industries
Frequently Asked Questions
- Q: What is the standard factory lead time of 339-E-P5-G5-H-R-S-N-P-3E-D-H? Can I customize IO and communication specifications by adjusting model code?A: Standard factory lead time ranges from 4 to 12 weeks. Every segment of the model code can be modified on demand to adjust current rating, power supply, communication and IO layout. Full code comparison sheet is available for parameter confirmation before order placement.
- Q: How long is the original factory warranty of the whole unit? Can official warranty document and English factory test report be provided for overseas projects?A: Brand new original unit carries 12-month standard factory warranty. English original factory inspection certificate is attached upon delivery, and sealed warranty letter can be issued separately for export orders.
- Q: The master password of the relay is lost on site, is there local hardware reset solution or factory return required?A: No local hardware reset function. Contact GE official technical support with device serial number for password unlocking; unauthorized disassembly for password cracking is prohibited.
- Q: The TROUBLE LED stays on constantly, how to quickly distinguish hardware failure and wiring abnormality?A: Enter local maintenance menu to read self-diagnosis fault codes. Codes indicating CT disconnection or communication loss refer to wiring issues; codes for mainboard or power supply damage mean hardware failure and unit replacement is required.
- Q: What communication protocols are supported to connect domestic PLC and upper computer? Does fiber Ethernet support IEC61850 GOOSE?A: Modbus RTU/TCP, DNP3.0, IEC103/IEC104 and IEC61850 are fully supported. Dual fiber Ethernet ports realize complete GOOSE fast trip communication function.
- Q: Can old MII series relays be directly replaced by 339? Are setting files compatible?A: Cabinet cutout size is fully compatible. EnerVista software supports one-click conversion of setting files from old models, minor manual adjustment of logic parameters enables direct replacement without large-scale cabinet rewiring.
- Q: Startup limit alarm triggers frequently for motors, which setting item should be modified?A: Enter startup protection menu to adjust allowable startup cycles per hour and interval delay between two startups, matching the startup curve specified by motor manufacturer.
- Q: Can protection settings be modified directly via front panel without laptop on site?A: Full parameter modification is available through local keypad menu. Save and lock permission after modification to prevent accidental misoperation.
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