Automatic Voltage Stabilizers
Alliance Engineering Company
Alliance Engineering Automatic Voltage Stabilizers (AVS) provide reliable voltage regulation for sensitive equipment in areas with wide voltage fluctuation. Designed with a relay-switched autotransformer topology, they accept a wide input range of 90V to 300V AC and deliver a stable 220V ±10% output. Fitted with an analog voltmeter for real-time output monitoring, an input ON/OFF switch, and clearly labelled L-N-E terminal blocks for safe and easy wiring. Housed in a robust MS powder-coated white cabinet suitable for wall mounting. Manufactured and tested at Alliance Engineering Company under ISO 9001:2015 standards.
Key Technical Advantages
Capacity
Up to 4 KVA and above
Input Range
90V – 300V AC
Output Voltage
220V ±10%
Phase
Single Phase
Indication
Analog Voltmeter
Certification
ISO 9001:2015
Technical Specifications
Validated industrial performance metrics for enterprise deployment.
| Parameter | Specification |
|---|---|
| Standard | IS 9815 |
| Phase Configuration | Single Phase |
| Input Voltage Range | 90V – 300V AC |
| Output Voltage | 220V ±10% |
| System Frequency | 50Hz |
| Capacity | Up to 4 KVA (custom ratings available) |
| Voltage Regulation Topology | Relay-Switched Autotransformer |
| Correction Speed | 20–40ms per relay step |
| No. of Relay Steps | 6 to 12 steps (depending on rating) |
| Output Voltage Regulation | ±10% of 220V |
| Efficiency | ≥ 95% |
| Waveform | Sine wave (no distortion) |
| Overload Protection | Built-in MCB / Fuse |
| Over / Under Voltage Protection | Automatic cut-off with manual reset |
| Time Delay | 30 seconds (output delay on power restore) |
| Indication | Analog Voltmeter (0–300V) |
| Input Switch | Toggle / Rocker Switch (Red) |
| Terminal Type | Screw Terminal Block (L-N-E) |
| Core Material | CRGO Steel |
| Winding Material | Copper |
| Enclosure | MS Powder Coated White Cabinet |
| Mounting | Wall Mount |
| Operating Temperature | -10°C to +50°C |
| Humidity | Up to 95% RH non-condensing |
Standards & Compliance
Certified engineering excellence across regional and global regulatory frameworks.
IS 9815
Compliance with standard engineering and safety performance metrics.
ISO 9001:2015
Certified Quality Management Systems for precision manufacturing.
Industrial Customizations
Our modular engineering workflow allows for specific adaptations to meet your site-specific infrastructure requirements. Consult with our technical team for bespoke builds.
Capacity (KVA Rating)
Up to 4 KVA and above
Input Voltage Range
90V – 300V AC
Output Voltage
220V ±10%
Enclosure and Mounting
Wall Mount MS Cabinet
Engineering Consultation
Connect with our technical desk for bulk specifications, tender support, or specialized engineering requests.
