Delta VFD055EL43W-1 5.5kW 7.5HP Three Phase VFD

Overview

The Delta VFD055EL43W-1 is a 5.5 kW (7.5 HP) reliable variable frequency drive (VFD) from Delta’s VFD-EL-W Series family. It takes a three-phase 460 V supply and delivers a controlled three-phase output, rated at 13 A, to drive motors up to 5.5 kW / 7.5 HP. It is intended for three-phase installations that need dependable, energy-saving speed control of an AC induction (and, on the newer series, permanent-magnet) motor. Direct three-phase input keeps the wiring simple in factory, plant and process settings, while the drive’s vector/V/f control holds motor speed steady as the load changes—protecting both the motor and the driven machine. With both V/f and Sensorless Vector Control (SVC) and an output range of 0.1–400 Hz, the VFD055EL43W-1 gives precise, stepless speed control for variable-torque and constant-torque loads alike. Its sensorless-vector control and built-in keypad make it quick to commission while delivering firmer speed holding under changing load.

Key Features

• Input: 3-Phase 380–480 V AC, 50/60 Hz
• Output: 3-Phase 0–480 V AC, 5.5 kW / 7.5 HP, rated 13 A
• Output frequency 0.1–400 Hz
• Overload capacity 150% of rated current for 60 seconds
• Sensorless Vector Control for higher low-speed torque
• Built-in PID, multi-pump control and two-motor parallel operation
• Torque boost and Time-Out detection functions
• Communication: RS-485, Modbus RTU
• Enclosure: IP20

Technical Benefits

At 13 A with 150% of rated current for 60 seconds, the drive handles the high starting torque and load impacts typical of pumps, compressors and material-handling equipment. Running fans and pumps at variable speed instead of a fixed 50 Hz cuts energy use sharply—on these loads, power scales with roughly the cube of speed—while soft start and stop reduce mechanical and belt wear and eliminate direct-on-line inrush current. Sensorless Vector Control delivers stronger torque at low speed than plain V/f, and the built-in EMC filter plus PID and multi-pump functions reduce the external components a panel builder has to add.

Selection & Compatibility

The VFD055EL43W-1 pairs with standard three-phase 400/460 V induction motors up to 5.5 kW / 7.5 HP. As a sizing rule, match the drive to the motor’s full-load current rather than its kW alone: confirm the motor draws no more than 13 A, and for heavy constant-torque or high-inertia loads consider the next frame up for extra overload margin. Make sure a three-phase 380–480 V supply is available. For long motor cables or EMC-sensitive installations, add the recommended output reactor or a zero-phase core. Our engineers can confirm drive sizing, braking-resistor requirements and key parameter settings before you place the order.

Applications

Typical three-phase applications include:

• crushers and grinders
• conveyors and material handling
• mixers and agitators
• cooling-tower fans
• process pumps
• industrial fans and blowers
• air compressors

About the Delta EL-W Series

The Delta VFD-EL-W is a compact sensorless-vector-control drive that upgrades the classic EL platform with higher starting torque and richer application functions. It adds a built-in EMC filter, PID feedback, multi-pump control, two-motor parallel operation, torque boost and a Time-Out detection function, all in a space-saving body suited to OEM panels and machine retrofits.