Reliance 25V4160
May 28, 2026

Reliance 25V4160

The 25V4160 is a 25 HP (18.7 kW) three-phase AC sensorless vector variable frequency drive (VFD) from the Reliance Electric GV3000/SE (Sensorless Enhanced) series. It features a NEMA 1 (IP20) vented enclosure, designed for general-purpose industrial motor control. Though discontinued by the original manufacturer, surplus and refurbished units are widely used for maintenance and retrofitting legacy automation systems.

Description

Product Description

The 25V4160 is a 25 HP (18.7 kW) three-phase AC sensorless vector variable frequency drive (VFD) from the Reliance Electric GV3000/SE (Sensorless Enhanced) series. It features a NEMA 1 (IP20) vented enclosure, designed for general-purpose industrial motor control. Though discontinued by the original manufacturer, surplus and refurbished units are widely used for maintenance and retrofitting legacy automation systems.

Model Number Interpretation

  • 25: Rated power = 25 HP.

  • V: Series code for GV3000/SE sensorless vector drive platform.

  • 41: 4 = 380–460 VAC input; 1 = NEMA 1 (IP20) vented enclosure.

  • 60: Enhanced sensorless vector control, 50/60 Hz base rating.

  • (no suffix): Standard version with built-in keypad.

Technical Specifications

  • Rated Power: 25 HP (18.7 kW).

  • Input Voltage: 380–460 VAC, three-phase, 50/60 Hz.

  • Input Current: 38.0 A (full load).

  • Output Current: 34.5 A (full load).

  • Full Load Power Loss: 750 W.

  • Output Voltage: 0–460 VAC, three-phase.

  • Output Frequency: 0–200 Hz.

  • Control Modes: V/Hz, sensorless vector (6.0 firmware).

  • Enclosure: NEMA 1 (IP20), vented, indoor panel-mount.

  • Operating Temperature: 0°C to +40°C (ambient).

  • Storage Temperature: −20°C to +60°C.

  • Cooling: Internal fan with top/bottom vents.

  • Weight: ~14.5 kg (32 lbs).

  • Certifications: UL, RoHS compliant.

Interface and Communication Configuration

  • Power Terminals: L1/L2/L3 (three-phase AC input); U/V/W (motor output); DC bus (+/−).

  • Control I/O: 8-channel 24 VDC digital inputs; 3 relay outputs (250 VAC / 5 A); 2 analog inputs (4–20 mA / 0–10 VDC); 2 analog outputs (0–10 VDC).

  • Communication: Onboard RS-232 port (behind front access panel) for keypad, HMI, or PLC connection.

  • Keypad/Display: Built-in membrane keypad with 7-segment LED for local programming, operation control, and real-time status monitoring.

  • Encoder Feedback: Dedicated terminals for pulse tachometer input to enable high-precision speed regulation.

Core Functions

  • Dual Control Modes: Switchable V/Hz and sensorless vector control to accommodate diverse speed and torque regulation requirements.

  • High Low-Speed Torque: Sensorless vector control delivers 150% torque for 1 minute at low speeds, ensuring accurate motor performance without encoder feedback.

  • Comprehensive Protection: Integrated overvoltage, undervoltage, overcurrent, overload, and overtemperature protection safeguards the drive and motor.

  • Regenerative Energy Handling: Supports external dynamic braking resistors to dissipate regenerative energy during deceleration.

  • Parameter Storage: Non-volatile memory stores user-configured parameters for backup and copying.

  • Low-Noise Operation: Selectable carrier frequencies (2 kHz, 4 kHz, 8 kHz) reduce acoustic noise and mechanical stress on the motor.

Application Scenarios

  • General Industrial: Pumps, fans, blowers, conveyors, and mixers.

  • Legacy System Retrofits: Direct replacement for older GV3000 series drives in 380–460 VAC three-phase systems.

  • Process Automation: Textile, packaging, and material handling equipment.

Usage and Maintenance Instructions

  • Installation: Mount vertically on a rigid panel; maintain minimum clearance around the drive for proper airflow and cooling.

  • Wiring: Use shielded cables for control signals; separate power and control wiring to minimize electromagnetic interference.

  • Pre-Power Check: Torque all terminals to specifications before applying power.

  • Operation Monitoring: Regularly check operating current, temperature, and status during operation.

  • Maintenance Safety: Disconnect all power and wait for DC bus discharge before inspection or maintenance.

  • Periodic Maintenance: Check terminals for looseness, corrosion, or overheating; clean cooling fans and vents to remove dust buildup.

  • Environmental Limits: Do not operate outside the 0°C to +40°C ambient temperature range.

  • Storage: Keep spare units in a cool, dry, dust-free environment.

  • Repair Warning: Do not disassemble without professional supervision.


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