325 kVA Servo Voltage Stabilizer
Our 325 kVA Servo Voltage Stabilizer delivers premium performance for large-scale industrial complexes. Features advanced servo technology with superior voltage stability.
Ref. SVS-325-3PH · Lead time 3–4 weeks · Made to order from Hapur
See full engineering specification & variants
Key Features
Recommended For
Specifications
| Specification | Value |
|---|---|
| Capacity | 325 kVA |
| Input Voltage | 300V–470V, 3-Phase |
| Output Voltage | 415V ±1% |
| Frequency | 50/60 Hz |
| Response Time | < 20 ms |
| Cooling Method | both air and oil cooled |
| Weight | 1300 kg |
| Warranty | 3 years |
Reading the specification
What these numbers mean for your installation
A datasheet tells you what the unit does. This is what each figure changes about how you specify, feed and site it — worked out for the 325 kVA specifically, not the range in general.
452 A per phase
At 415 V three-phase, 325 kVA works out at roughly 452 A per phase. At 452 A you are normally into parallel cable runs per phase rather than a single conductor. Confirm the terminal chamber accepts the number of runs your cable schedule calls for — discovering it does not, on the day of commissioning, is the most common reason installations at this rating slip.
300V–470V
The unit holds output at 415V ±1% anywhere between 300 V and 470 V in. Pulling a 300 V supply back up to 415 V means adding 115 V — a 38% lift on the incoming supply, with the series winding carrying roughly 90 kVA of the 325 kVA throughput. Below 300 V it runs out of range, and the answer is a wider-window build, not more kVA.
< 20 ms
At this rating the stabilizer is feeding a whole section of the floor, so < 20 ms determines whether one machine's inrush propagates into every other machine on the same board. That is the mechanism behind most "random" tripping complaints we are called out to.
150% for 30 minutes
Direct-on-line starting draws six to eight times full-load current for a few seconds, and 150% for 30 minutes is the margin that absorbs it. At 325 kVA the practical constraint is usually the largest single motor rather than the total: size against that starting current, not against the sum of the nameplates.
Sizing Guide
When is 325 kVA the right choice?
325 kVA is the correct size when a 300 kVA unit would sustain load above 90% during peak production periods. Paper mills with coating lines, large cold-storage warehouses with 8–12 refrigeration compressors, and integrated garment factories where embroidery machines, cutting plotters, and steam presses share a single incomer are typical applications. This is also the size most often chosen for EPC contractors installing at SEZ units where the client specifies 20% spare capacity above connected load as a contractual requirement — the 325 kVA unit gives that margin over a 260–270 kVA calculated load.
Before you order
Where 325 kVA goes in, and what the site needs
Typical installations
We supply 325 kVA most often into large manufacturing plants, steel mills, automotive facilities and chemical plants, alongside industrial complexes and metal fabrication. What separates those sites is duty cycle rather than load. A rating that runs cool on single-shift work sits near the top of its thermal range on a continuous three-shift line, and that is the point at which oil cooling stops being optional.
Site preparation
At 1,300 kg this is forklift work, and the forklift has to be rated for 1,300 kg at the extended reach that placement requires. Confirm floor loading before it arrives — a ground-floor workshop slab is normally adequate, a mezzanine generally is not. Leave working clearance on the terminal side for cable entry and inspection. Sustained ambient above 45 °C, or an enclosed room without cross-ventilation, requires derating — send us the room conditions and we will confirm the rating still holds where you intend to put it.
Adjacent ratings
If 325 kVA is not the right size
Sizing rarely lands exactly on a catalogue rating first time. These are the ratings either side of it in the same range — compare the specification before you commit.
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View specificationEngineering detail on this configuration
The servo voltage stabilizer pages carry the full design rationale, comparison tables and application notes behind this SKU.
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Send us your kVA requirement, supply voltage range, and site conditions. Our engineer will confirm whether this configuration is correct for your installation, or specify an alternative if needed. No distributors — direct from our factory in Hapur.
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