JIADEST / Automatic AC Voltage Stabilizers

Three-Phase Automatic Voltage Stabilizers

Manufacturer’s series: SVC

Three-phase servo-controlled automatic AC voltage stabilizers for industrial, commercial and institutional loads.

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Three-Phase Automatic Voltage Stabilizers product photograph — Open reference photograph ↗
Product reference photograph. Refer to the technical tables and drawings for each configuration.

Overview

A contact-type variable autotransformer, servo motor and automatic control circuit continuously stabilize the supply. When mains voltage or load changes, a sampling/control circuit drives the servo motor to reposition the carbon brush and bring output voltage back to its rated value.

Brochure states high efficiency, reliable long-duration operation, undistorted waveform, short-delay and overvoltage protection. Long-delay and undervoltage protection can be added on request.

The brochure describes the series as an energy-saving design developed with reference to international products and domestic operating conditions, offering large capacity, wide regulation range, high accuracy, extensive protection, compact size, low mass and convenient operation and maintenance.

Applications

Industrial and mining enterprises, postal and telecommunications facilities, railways, construction sites, schools, hospitals, hotels, defence and research facilities. Suitable loads include computers, precision machine tools, CNC machinery, CT equipment, precision instruments, test equipment, lifts, imported equipment and production lines.

Technical specifications.

Parameter	Published specification
Input voltage	3-phase 280–430 V, 3-phase 4-wire
Output voltage	3-phase line 380 V; phase 220 V
Voltage regulation accuracy	Phase voltage 220 V ±3% and 110 V ±2%
Frequency	50/60 Hz
Adjustment time	<1 s for a 10% input-voltage change
Overvoltage protection	246 V ±4 V
Ambient temperature	−10 to +40°C
Temperature rise	<60°C
Waveform distortion	No additional waveform distortion
Load power factor	0.8
Dielectric withstand	1500 VAC / 1 min, no flashover or breakdown
Insulation resistance	Three-phase unit to earth >2 MΩ

Models & configurations.

Designations are retained as published. Separate rows or variants with the same designation remain distinct in the relevant tables.

SVC-6kVA3-phase 4-wire · 150–250 · 280–430 · 220 ±2% · 380 ±3% · 9 · 320×350×710
SVC-9kVA3-phase 4-wire · 150–250 · 280–430 · 220 ±2% · 380 ±3% · 13.5 · 320×350×710
SVC-15kVA3-phase 4-wire · 150–250 · 280–430 · 220 ±2% · 380 ±3% · 22.5 · 320×350×710
SVC-20kVA3-phase 4-wire · 150–250 · 280–430 · 220 ±2% · 380 ±3% · 30 · 460×415×810
SVC-30kVA3-phase 4-wire · 150–250 · 280–430 · 220 ±2% · 380 ±3% · 40 · 460×415×810
SVC-50kVA3-phase 4-wire · 150–250 · 280–430 · 220 ±2% · 380 ±3% · 76 · 600×550×1020
SVC-60kVA3-phase 4-wire · 150–250 · 280–430 · 220 ±2% · 380 ±3% · 91 · 600×550×1020

Ratings and dimensions

Ratings and dimensions
Model	Input arrangement	Input phase voltage (V)	Input line voltage (V)	Output phase voltage (V)	Output line voltage (V)	Output current (A)	Overall dimensions (mm)
SVC-6kVA	3-phase 4-wire	150–250	280–430	220 ±2%	380 ±3%	9	320×350×710
SVC-9kVA	3-phase 4-wire	150–250	280–430	220 ±2%	380 ±3%	13.5	320×350×710
SVC-15kVA	3-phase 4-wire	150–250	280–430	220 ±2%	380 ±3%	22.5	320×350×710
SVC-20kVA	3-phase 4-wire	150–250	280–430	220 ±2%	380 ±3%	30	460×415×810
SVC-30kVA	3-phase 4-wire	150–250	280–430	220 ±2%	380 ±3%	40	460×415×810
SVC-50kVA	3-phase 4-wire	150–250	280–430	220 ±2%	380 ±3%	76	600×550×1020
SVC-60kVA	3-phase 4-wire	150–250	280–430	220 ±2%	380 ±3%	91	600×550×1020

DIMENSIONS / CONNECTIONS / SOURCE DATA

Technical information and original product sheets.

The original sheet retains all dimensioned drawings, connection diagrams, table footnotes and published values. It is supplied in its original language for direct verification against the English specification.

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Original technical sheet with complete specifications and dimension drawings for Three-Phase Automatic Voltage Stabilizers

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Related product series.

Single-Phase Automatic Voltage Stabilizers · TND ↗High-Power Compensated Voltage Stabilizers · SBW ↗DSP-Controlled Static Voltage Stabilizers · WJS ↗Single-Phase Precision AC Power Conditioners · JJW ↗Three-Phase Precision AC Power Conditioners · SJJW ↗Single-Phase Automatic AC Voltage Stabilizers, 0.5–5 kVA · TND ↗

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