Three-phase inverter voltage stabilizers 16.5–52.8 kW (Quant 3×5.5 … 3×18) with phase control unit

Three-phase inverter voltage stabilizers 16.5–52.8 kW (Quant 3×5.5 … 3×18) with phase control unit

Country: Ukraine · Model: Quant 3×5,5 – 3×18

A three-phase stabilizer is assembled from three single-phase inverter modules, one per phase, and can be supplemented with a phase control unit (PCU) if required. The PCU, based on a phase monitoring relay and contactors, disconnects all three phases if one phase is lost, the phases are unbalanced or the phase sequence is wrong, which protects motors, compressors and machine tools. Without a PCU, the set suits loads for which phase order is not critical, such as heaters, lighting and computers. Each module weighs less than 16 kg, which simplifies installation.

Models and power: Quant-16.5 (3×5.5); Quant-21 (3×7); Quant-27 (3×9) — 26.4 kW; Quant-33 (3×11); Quant-42 (3×14) — 41.4 kW; Quant-54 (3×18) — 52.8 kW
Versions: with phase control unit (PCU) or without
Current (Quant-21): 32 A per phase continuous, overload 60 A
Module weight (Quant-21): 11 kg

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Technical specifications

Models and power	Quant-16.5 (3×5.5); Quant-21 (3×7); Quant-27 (3×9) — 26.4 kW; Quant-33 (3×11); Quant-42 (3×14) — 41.4 kW; Quant-54 (3×18) — 52.8 kW
Versions	with phase control unit (PCU) or without
Current (Quant-21)	32 A per phase continuous, overload 60 A
Module weight (Quant-21)	11 kg
Self-consumption (Quant-21)	15 W per phase
Input voltage	90–350 V
Output voltage	220 or 230 V (selectable), correction ±3 % in 0.1 % steps
Stabilization accuracy	0.5 %
Mains frequency	50 ± 5 Hz
Overload shutdown	>125–150 % — 12 s; >150 % / short circuit — 1.5 s
Start-up delay	6 s
Operating temperature	+5…+40 °C, humidity 40–80 %
Protection rating	IP20
Cooling	forced, low-noise
Module (H×W×D)	435 × 250 × 125 mm
Mounting	wall-mounted

Analogues in the catalogue

Specifications are taken from the manufacturer’s technical documentation. Updated 11/09/2026.

Description

Main features: inverter circuit with double conversion: surges and pulses at the input do not pass to the output; smooth regulation without steps and without delay — lamps do not flicker; reactive current compensation and current limiting, voltage waveform improvement; interference filter and pulse absorber; built-in display and power measurement, mechanical bypass; operation from a generator is not supported.

Technical data: Models and power — Quant-16.5 (3×5.5); Quant-21 (3×7); Quant-27 (3×9) — 26.4 kW; Quant-33 (3×11); Quant-42 (3×14) — 41.4 kW; Quant-54 (3×18) — 52.8 kW; Versions — with phase control unit (PCU) or without; Current (Quant-21) — 32 A per phase continuous, overload 60 A; Module weight (Quant-21) — 11 kg; Self-consumption (Quant-21) — 15 W per phase; Input voltage — 90–350 V; Output voltage — 220 or 230 V (selectable), correction ±3 % in 0.1 % steps; Stabilization accuracy — 0.5 %; Mains frequency — 50 ± 5 Hz; Overload shutdown — >125–150 % — 12 s; >150 % / short circuit — 1.5 s; Start-up delay — 6 s; Operating temperature — +5…+40 °C, humidity 40–80 %; Protection rating — IP20; Cooling — forced, low-noise; Module (H×W×D) — 435 × 250 × 125 mm; Mounting — wall-mounted.

Application: production shops and workshops; machine tools, compressors, pumps and other three-phase loads; facilities with solar power plants; networks with large voltage fluctuations (90–350 V).

How to choose

We select the power rating, version (with or without a phase control unit, PCU) and equipment set to suit the load; delivery time depends on the production workload, so please clarify with the manager.