Description
GE 339-E-P5-G5-H-E-S-N-N-SN-D-N
Technical Specifications:
| Parameter | Specification |
|---|---|
| Product Family | GE Multilin 3 Series |
| Model | 339 Motor Protection System |
| User Interface | English with programmable LEDs (E) |
| Phase Current Inputs | 5A, 3-phase (P5) |
| Ground Current Input | 5A (G5) |
| Power Supply | 110-250 V DC / 110-230 V AC (H) |
| Input/Output | 10 Contact Inputs, 4 Outputs (1 Form A, 3 Form C), 3 RTD Inputs (S) |
| Current Protection | Standard configuration: 37, 46, 48, 49, 50P(1), 50G/SG(1), 50N(1), 50L, 51R, 66, 86, 51N(1), 51P(1), 50BF (S) |
| Voltage Protection | None (N) |
| Other Options | No selection (N) |
| Communications | Standard + Ethernet (Copper + Fiber – MTRJ) Modbus TCP/IP, DNP3.0, IEC 60870-5-104 (SN) |
| Case Design | Protection Relay (drawout design) with no chassis (D) |
| Harsh Environment | None (N) |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Weight | Approx. 2.6 kg (6 kg shipping) |
| Dimensions | Compact drawout case design |
Advanced Motor Thermal Model:
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Overload Curves: Customizable FlexCurves for smooth custom overload protection
-
Unbalance Biasing: Adjusts thermal model based on current unbalance conditions
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Hot/Cold Safe Stall Ratio: Differentiates between hot and cold motor conditions
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Motor Cooling Time Constants: Accounts for motor cooling characteristics
-
Thermal Inhibit: Prevents motor restart until safe thermal conditions
-
Emergency Restart: Allows supervised override of thermal lockout
-
RTD Biasing: Adjusts thermal model based on actual RTD temperature measurements
Communication Capabilities:
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Standard Ports: RS-485 (Modbus RTU), Front USB, Rear serial port
-
Ethernet Options: Copper and fiber (MTRJ connector) with Modbus TCP/IP
-
Protocol Support: IEC 61850, IEC 61850 GOOSE, DNP 3.0, Modbus RTU, Modbus TCP/IP, IEC 60870-5-104, IEC 60870-5-103
-
Simultaneous Communication: All communication ports capable of operating simultaneously
-
GOOSE Messaging: Peer-to-peer communication between relays in as fast as 8 ms
-
Virtual Inputs: Remote digital commands via communication interfaces
Security Features:
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Password Security: Master password (8-10 alphanumeric characters), Settings password (3-10 characters), Control password (3-10 characters)
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Security Audit Trail: Records last 10 configuration changes with MAC address, modification details, and method of change
-
Access Levels: Separate passwords for local and remote operators
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NERC CIP Compliance: Security reporting requirements support
Monitoring and Diagnostics:
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Metering Information: Phase currents (Ia, Ib, Ic, In, Ig, Isg), phase-to-phase and phase-to-ground voltages, active power, reactive power, frequency, current unbalance, motor load percentage, thermal capacity used, RTD temperatures
-
Event Recording: 256 events time-tagged to nearest millisecond
-
Oscillography: 32 samples per cycle, 8 individual channels, triggered internally or externally
-
Motor Health Report: Start/stop history, comprehensive logs, acceleration times, starting currents
-
Preventative Maintenance: Environmental condition monitoring and alarming
-
Failure Detection: Communication port and IRIG-B failure alarms
Input/Output Details:
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Contact Inputs: 10 opto-isolated inputs with programmable thresholds (17, 33, 84, 166 VDC ±10%)
-
Input Recognition Time: 1/2 cycle
-
Debounce Time: 1 to 64 ms selectable
-
Form A Output Relays: 2 electromechanical (Trip and Close with coil monitoring)
-
Form C Output Relays: 5 electromechanical (configurable)
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RTD Inputs: 3 internal 100 Ohm platinum RTD inputs (expandable to 12 with RMIO module)
Physical Characteristics:
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Drawout Construction: Complete withdrawable feature eliminating rewiring for testing
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Communication Retention: Maintains communication status even after relay withdrawal
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Pluggable Connections: RS-485 and IRIG-B connections for easy troubleshooting
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Compact Design: Minimizes mounting requirements, enables side-by-side panel mounting
-
Retrofit Compatibility: Easy retrofit to existing cases
Applications:
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Small to medium-sized AC motor protection (3-5000 HP)
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Medium voltage motor applications
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Feeder protection applications
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Process motor protection in industrial environments
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Pump, fan, compressor, and conveyor motor control
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Water/wastewater treatment facilities
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Oil and gas production equipment
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Mining and minerals processing
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Power generation auxiliary systems
Installation Requirements:
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Current Transformers: 10 to 1500 A primary, secondary must match relay (5A for this configuration)
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Ground CT: Zero-sequence (core balance) recommended over residual connection
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Voltage Transformers: Up to 300:1 ratio, 50-240 V secondary (if voltage protection option installed)
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Control Power: 110-250 V DC or 110-230 V AC (must match H option)
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Grounding: Direct connection to ground bus with shortest practical path using tinned copper braided cable
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External Protection: Circuit breaker or protective device required near equipment
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Mounting: Panel or chassis mounting (drawout case design)
Operating Conditions:
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Ambient Temperature: 20°C to +60°C operating, -40°C to +85°C storage
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Humidity: 5-95% non-condensing
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Altitude: Up to 2000 meters
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Vibration: IEC 60255-21-1 Class 1
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Enclosure: IP20 standard (IP20 kit available as accessory)





