100 kVA Servo Voltage Stabilizer
Our 100 kVA Servo Voltage Stabilizer delivers consistent power supply with ±1% voltage regulation, ideal for manufacturing facilities and data centers. Features advanced servo motor control for rapid response to voltage fluctuations.
Ref. SVS-100-3PH · Lead time 1 week · Made to order from Hapur
See full engineering specification & variants
Key Features
Recommended For
Specifications
| Specification | Value |
|---|---|
| Capacity | 100 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 | 420 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 100 kVA specifically, not the range in general.
139 A per phase
At 415 V three-phase, 100 kVA works out at roughly 139 A per phase. Terminate this into the stabilizer's own cable chamber via a gland plate. Check the plate is drilled for your cable diameter before delivery, and size the upstream breaker at 174 A so the protection device is never the limiting element in the feed.
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 28 kVA of the 100 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 matters more than the ±1% accuracy figure for most buyers. The failure that actually costs you is a drive faulting on undervoltage when a large motor elsewhere on the feeder starts, and correction inside < 20 ms is what prevents it.
Absorbs a 125% overload for up to an hour without tripping
Direct-on-line starting draws six to eight times full-load current for a few seconds, and Absorbs a 125% overload for up to an hour without tripping is the margin that absorbs it. Keep steady-state load below about 80% of 100 kVA so this headroom is still available when the largest motor starts.
Sizing Guide
When is 100 kVA the right choice?
100 kVA is the most common entry point for medium-scale manufacturing. A typical CNC machining centre with 3–4 axes draws 30–60 kVA at peak load; running two machines plus auxiliary lighting and HVAC puts the connected load squarely in the 80–100 kVA range. This rating is also the standard choice for hospital operation theatres, server rooms with 60–80 servers, and diagnostic imaging suites where a single voltage dip could abort a procedure or corrupt a scan. If your existing main incomer is a 100A TPN breaker on a 415V supply, this is almost certainly the correct stabilizer size — share your load list and we will confirm.
Before you order
Where 100 kVA goes in, and what the site needs
Typical installations
We supply 100 kVA most often into cnc machining centres (3–4 axis), hospital operation theatres & diagnostic imaging, server rooms (60–80 servers) and precision test & calibration labs, alongside electronics assembly lines and plant-level hvac plant rooms. 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 420 kg you need a pallet truck at minimum and a level, load-spreading base. Check the route for ramp gradients — a hydraulic truck carrying 420 kg will not climb much of one. 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 100 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.
Ready to specify?
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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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