EL-AV ELCD50INV EL+ Series 50 HP iPM Variable-Speed Rotary Screw Air Compressor (460V/3-Phase)

EL-AV EL+ Series rotary screw air compressors deliver continuous-duty compressed air at the lowest energy cost per CFM in their class. Every EL+ machine ships standard with an iPM (interior permanent-magnet) TEFC motor rated IP54 driven by a fully integrated variable-frequency drive, ASME & UL approved pressure components, and built-in VNC remote connectivity for status monitoring from any device on your network.

The integrated VFD turns motor speed up and down to exactly match plant demand — no unloaded run-time, no blow-off, no wasted kilowatts. Compared with a fixed-speed load/unload screw of the same nameplate horsepower, an EL+ inverter machine typically saves 25 – 35% on electricity across a real-world duty cycle while holding system pressure to within ±1 PSI.

Why EL+ vs. a Conventional Rotary Screw

• iPM motor: permanent-magnet rotor for IE5-class efficiency and constant torque from minimum to maximum RPM.
• Integrated VFD: soft-start eliminates inrush; no star-delta starter required; no unloaded losses.
• TEFC IP54: totally enclosed fan-cooled — safe for dusty machine shops, woodworking, food packaging, and outdoor sheds.
• VNC connectivity included: view the controller from any PC or tablet on the network.
• ASME & UL components: compliant pressure vessels and electrical for U.S. installations.

ELCD50INV — Detailed Specifications

Motor Nominal Power	50 HP
Capacity @ 116 PSI	46 – 230 CFM
Capacity @ 145 PSI	40 – 198 CFM
Capacity @ 8 Bar	1300 – 6500 l/min
Capacity @ 10 Bar	1120 – 5600 l/min
Voltage (standard)	460V 3-Phase 60Hz
Voltage (optional)	208–230V 3-Phase (via auto-transformer add-on)
Drive Motor	iPM TEFC IP54, VFD-controlled, IE5-class efficiency
Dimensions (L × W × H)	56 × 36 × 57 in
Weight	680 kg / 1500 lbs
Noise Level	66 dB(A)
Air Discharge	G 1 1/2" BSP
Connectivity	VNC Connectivity + RS485 Modbus communication
Approvals	ASME & UL approved components
Warranty	Standard EL-AV factory warranty

All CFM and l/min ratings are for reference only — actual delivered flow varies with site conditions per ISO 1217 Annex C.

Available Factory Add-Ons (Order Separately)

Add-On	Price	Description
208-230V Auto Transformer (50 HP)	$6,900	Auto-transformer to 208–230V three-phase.
Reactor & Filter (15-50 HP)	$2,980	Line reactor + EMI/RFI filter package.

Configuration Add-Ons (Order Separately)

Each factory add-on — receiver tank mounting, 208–230V auto-transformer package, and the input-side line reactor with output-side EMI/RFI filter — is listed as its own product on the A1 Compressor Warehouse site so the bill of materials on your purchase order matches your installation drawing line for line. Add the matching accessory product(s) to your cart along with this base machine.

Installation & Support

A1 Compressor Warehouse ships factory-fresh EL-AV equipment from our Clover, South Carolina warehouse with 24-hour order processing on in-stock items. Free pre-sale consultation, sizing assistance, and post-sale service support are included on every EL+ machine — call 954-530-7636 or email sales@a1compressorwarehouse.com.