Zoncn NZ200T Compressor Inverter

ZONCN NZ200T is a series of universal variable frequency drives (VFDs) from the Chinese manufacturer ZONCN, specialized for air compressors. “NZ200T” is the series name; the specific model in the nameplate marking is always completed with a power and voltage-class code (e.g., NZ200T-22GY-4 — 22 kW, 380V). The series covers a power range from 0.4 to 160 kW and is designed for both single-phase (220V) and three-phase (380V) power supply.

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Description

Technical Specifications (NZ200 lineup, 380V / 3-phase)

Model Output power, kW Input current, A Output current, A
NZ200-0R4G-4 0.4 3.4 1.2
NZ200-0R75G-4 0.75 3.8 2.5
NZ200-1R5G-4 1.5 5 3.7
NZ200-2R2G-4 2.2 5.8 5
NZ200-3R7G/5R5P-4 3.7 10.7 9
NZ200-5R5G/7R5P-4 5.5 14.6 13
NZ200-7R5G/11P-4 7.5 20 17
NZ200-11G/15P-4 11 26 25
NZ200-15G/18P-4 15 35 32
NZ200-18G/22P-4 18 38 37
NZ200T-22GY-4 22 46 45
NZ200-30G/37P-4 30 62 60
NZ200-37G/45P-4 37 76 75
NZ200-45G/55P-4 45 92 90
NZ200-55G/75P-4 55 113 110
NZ200-75G/90P-4 75 157 150
NZ200-90G/110P-4 90 180 176
NZ200-110G/132P-4 110 214 210
NZ200-132G/160P-4 132 256 253
NZ200-160G/185P-4 160 307 300

A single-phase 220V (-15%) lineup is also available, in the 0.4–3.7 kW range (NZ200-…-2).

Advantages and Strengths

  1. Wide power range in a single series — from 0.4 to 160 kW covers practically the entire size range of compressor installations, simplifying spare-parts selection and equipment fleet standardization.
  2. Intelligent energy saving — per the manufacturer, the drive monitors motor current, power, and load in real time and automatically adjusts output frequency, reducing unproductive energy consumption.
  3. Purpose-built for compressors — unlike a general-purpose industrial VFD, the series is oriented toward soft-start algorithms and operation under the variable load characteristic of compressors.
  4. Available in both single-phase and three-phase versions at lower power ratings — convenient for replacements at sites with limited power supply.
  5. Wide market availability — the model is well documented and offered by numerous suppliers, simplifying the search for spare parts and compatible components during repair.

Application Areas

  • Replacing a failed factory-original VFD on Chinese-made screw compressors
  • Equipping new compressor installations across a wide power range
  • Retrofitting direct-on-line compressor stations for variable-frequency control
  • Production and service sites with a mixed compressor fleet, where standardizing spare parts around a single VFD brand matters

Expert Opinion

Expert Opinion: Vitali Bolucevschi, Chief Engineer, Acvatron, 15 years in the field
“With series like the ZONCN NZ200T, the first thing I ask the client for is the full nameplate marking of the old drive, not just ‘NZ200T’. The difference between neighboring models by power (say, 18 kW and 22 kW) is a difference in rated current of nearly 1.2x, and picking ‘by eye, based on series name alone’ isn’t acceptable here. I always ask for a photo of the nameplate with the full code — such as NZ200T-22GY-4 — before processing a replacement.”

FAQ

What do the letters G and P mean in the model code (e.g., “22GY” or “22P”)?
G is the constant-torque design, P is the variable-torque design (typically for fan/pump loads); the letter Y at the end indicates a compressor-specific modification.

Can the single-phase NZ200 version (220V) be used instead of the three-phase one?
Only for the lower power ratings in the range (up to ~3.7 kW), and only if the site’s power supply is genuinely single-phase — more powerful compressors exclusively use the three-phase “-4” version.

How do I find the exact model for a replacement on my compressor?
You need the full code from the failed drive’s nameplate or the compressor’s technical documentation stating the main motor’s power — send a photo to an Acvatron manager for exact selection.