Technical Specifications
| Parameter | Value |
|---|---|
| Model | YX9500B-4T0055G |
| Manufacturer | Shenzhen Yuanxin Electric Technologies Co., Ltd (Yuanxin/YX) |
| Series | YX9500B — integrated VFD for air compressors |
| Power | 5.5 kW |
| Voltage class (“4T” decoding) | 3-phase, 380–400V |
| Load type (“G” decoding) | Constant torque |
| Operating voltage | ~380V (-15%) … 440V (+10%)* |
| Rated output current | ~13–14 A* |
| Motor compatibility | Synchronous and asynchronous compressor motors |
| Enclosure | Plastic, wall-mounted |
| Control terminals | Plug-in type, miswiring protection |
| Communication interface | HMI (touchscreen)-compatible — one-click startup |
| Control method | Vector control, PWM |
| Application | Screw air compressors |
*Output current and voltage tolerance values are shown as typical for a 5.5 kW VFD in this class, based on general technical data for the series; exact rated-plate values (rated current, overload capacity, IP rating) should be confirmed against the official Yuanxin datasheet for the specific batch before publishing this card — the manufacturer does not publish them in the open catalog.
Advantages and Strengths
- Purpose-built for compressors, not a generic VFD — built-in screw-compressor control logic reduces commissioning time compared to adapting a general-purpose drive.
- One-click HMI startup — pairs with a touchscreen panel without complex parameter programming, simplifying maintenance for staff without deep VFD expertise.
- Plug-in terminals with miswiring protection — reduces the risk of installation errors during initial setup and later servicing.
- Compact plastic wall-mount enclosure — convenient for installation in the limited space of a compressor room without a separate control cabinet.
- Support for synchronous and asynchronous motors — versatile for matching to a specific compressor model, including modern permanent-magnet drives.
Application Areas
- Retrofitting small-power (5.5 kW) screw air compressors for variable-frequency control
- Replacing a failed factory-original VFD on Chinese-made compressors
- Compressor stations at small production sites, auto service centers, workshops
- Sites with limited cabinet space where compact wall-mount installation matters
Expert Opinion
Expert Opinion: Vitali Bolucevschi, Chief Engineer, Acvatron, 15 years in the field
“With brands like Yuanxin, my practical approach is this: the official catalog gives a general series description, but exact parameters — rated current, enclosure IP rating, actual overload capacity — are only published in the batch-specific datasheet or have to be requested directly from the supplier. Before quoting a client exact figures for the YX9500B-4T0055G, I always request the datasheet from the supplier for the specific serial number — decoding the model code (4T = 380V, 0055 = 5.5 kW, G = constant torque) gives direction, but doesn’t replace the rated-plate data.”
FAQ
What does the letter “G” at the end of the model code mean?
G indicates “constant torque” load type — a design for loads requiring stable torque across the full speed range, typical for compressors.
Is the YX9500B-4T0055G suitable for a compressor with a permanent-magnet synchronous motor?
Yes, the YX9500B series supports control of both asynchronous and synchronous compressor motors.
Is a separate controller needed to run the compressor?
No, the series is designed for direct pairing with a touchscreen (HMI) panel without an additional PLC, thanks to its built-in compressor logic.
