600 kVA Servo Voltage Stabilizer
Our 600 kVA Servo Voltage Stabilizer is designed for mega-industrial facilities and power distribution networks. Delivers unmatched voltage stability and operational reliability.
Ref. SVS-600-3PH · Lead time 3–4 weeks · Made to order from Hapur
See full engineering specification & variants
Key Features
Recommended For
Specifications
| Specification | Value |
|---|---|
| Capacity | 600 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 | 2350 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 600 kVA specifically, not the range in general.
835 A per phase
At 415 V three-phase, 600 kVA works out at roughly 835 A per phase. At 835 A cable becomes awkward and expensive; most installations at this rating land on a busduct or a bolted busbar connection straight from the LT panel. Size the neutral deliberately as well — with the non-linear loads typical at this scale, triplen harmonics can put more current in the neutral than in any phase.
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 166 kVA of the 600 kVA throughput. Below 300 V it runs out of range, and the answer is a wider-window build, not more kVA.
< 20 ms
< 20 ms across a plant-level load means the servo is tracking a constantly moving target — every shift change and every large start moves it. Correction this fast is what keeps the whole facility inside tolerance rather than just the sensitive end of it.
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 600 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 600 kVA the right choice?
600 kVA is a whole-plant rating for medium industries and a zone-level rating for large ones. A rice milling complex with hullers, polishers, sorters, and bagging conveyors, or a cold-storage campus serving multiple temperature zones, typically draws 520–600 kVA at full utilisation. At this power level, the stabilizer is usually positioned at the secondary of the site's 11kV/415V transformer, and the specification must account for the transformer's short-circuit current — the 600 kVA stabilizer handles transformer inrush without tripping on overcurrent. SCADA integration and remote data logging are expected at this capacity, as the operational cost of an undetected fault is high.
Before you order
Where 600 kVA goes in, and what the site needs
Typical installations
We supply 600 kVA most often into mega manufacturing plants, steel mills, chemical processing plants and automotive manufacturing, alongside textile mills and heavy power distribution. 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 2,350 kg you are into hydra or gantry territory for the final lift, onto a plinth cast for the purpose. The unloading point matters as much as the destination: plan where the truck stands and how the 2,350 kg travels the last few metres, because that gap is where most delivery-day problems happen. 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 600 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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