Stavol 30kva AVR Stabilizer

Stavol 30 kVA AVR Stabilizer — Overview & Specifications

While specific technical specs from Stavol’s official documentation are scarce, information from similar models and trusted distributors gives us a reliable overview:

Electrical Specifications (Based on ST-30,000VA and ST3-30,000VA variants)
Feature Details
Capacity 30 kVA (30,000 VA)
Voltage Regulation Maintains output voltage at ~220 V (±3%) for single-phase, and ~380 V (±1%) for three-phase units
buildwisedepot.com
+1
surajint.com
+1

Input Voltage Range Single-phase: 140–250 V
buildwisedepot.com
surajint.com
. Three-phase: 277–430 V
surajint.com
buildwisedepot.com

Time Delay Protection Long delay: 2–5 minutes; Short delay: 2–5 seconds — protects against rapid voltage changes
surajint.com
buildwisedepot.com

Over/Under-Voltage Protection Single-phase: cut-offs around 246 V (over) / 186 V (under)
buildwisedepot.com
surajint.com

Load Power Factor Approximately 0.8
buildwisedepot.com

Adjusting Time ~1.5 seconds response to 10% input change
buildwisedepot.com

Winding Material Pure copper windings for enhanced performance and thermal stability (noted in ST3 variant)
surajint.com
buildwisedepot.com
Physical & Build Characteristics

Robust Cabinet Design: Likely built as a floor-standing unit with wheels for mobility—seen in typical images like above.

Weight & Dimensions: Three-phase models such as ST3 measure approximately 64 × 55 × 107 cm and weigh ~126 kg
surajint.com
.

Construction: Durable metal enclosure suitable for industrial and commercial settings.

Key Features & Benefits

Servo (Motorized) Stabilization: Offers precise and continuous voltage regulation—superior to relay-type alternatives in protecting sensitive equipment.

Wide Input Range: Accommodates significant voltage fluctuations, ideal for unstable power environments.

Time Delay Function: Safeguards connected appliances by delaying output during initial power-up or after significant variance—protecting compressors, motors, and electronics.

Pure Copper Core: Enhances reliability, efficiency, and lifespan.

Flexible Deployment: Whether single or three-phase, it supports varied power setups (e.g., residential vs industrial).