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Three Phase · Oil Cooled

400 KVA Servo Stabilizer

400 KVA Servo Stabilizer — Three Phase, Oil Cooled
400 KVA · Three Phase

400 KVA Servo Stabilizer Manufacturer in India

The 400 KVA Servo Stabilizer is a three phase servo voltage stabilizer that holds your output at a precise 415V/230V ±1%, however wide the incoming supply swings. Servo Stabilizer India builds every 400 KVA unit to order — oil-immersed for 100% continuous loading and harsh ambient conditions — and supplies it factory-direct across India with installation and AMC. It is sized for heavy industrial plant — furnaces, rolling mills and full-factory main lines.

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Technical Specifications

400 KVA servo stabilizer specs

Capacity / Rating 400 KVA Servo Stabilizer (400 KVA)
Phase Three Phase
Output Voltage 415V ±1%
Input Voltage Range 340V–480V (3-ph)
Full-load Current (approx.) 556 A per phase
Cooling Oil Cooled
Correction Speed 25–40 V/sec per phase
Efficiency > 98%
Duty 100% continuous

Specifications are indicative and customised to your site — input window, cooling and metering are configured to your load. See the full Oil Cooled Servo Stabilizer range.

How to size a 400 KVA servo stabilizer

A 400 kva servo stabilizer is rated to deliver 400 KVA at the output. As a rule we keep 20–25% headroom above your connected load, so a 400 KVA unit is the right choice for a working load of around 320 kW. That margin absorbs the starting surge of motors, compressors and pumps without the stabilizer running hot or tripping. If your load includes several large motors that start together, send us the list — we'll confirm whether 400 KVA is enough or whether to step up to the 500 kva servo stabilizer.

At 400 KVA the oil-immersed for 100% continuous loading and harsh ambient conditions. It is supplied as a three phase 415V unit with independent phase control, so it corrects each phase separately even when the incoming supply is unbalanced. Read our KVA sizing guide or air vs oil cooled comparison for more detail.

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Questions, Answered

400 KVA Servo Stabilizer FAQs

The price of a 400 kva servo stabilizer depends on the phase (three phase), cooling type (oil cooled) and input voltage window you need. Servo Stabilizer India builds each 400 KVA unit to order and sells factory-direct — no dealer margin. Share your load and we send a same-day quotation. Call +91 81788 87426.

A 400 KVA servo stabilizer comfortably runs a connected load of about 320 kW — we keep 20–25% headroom for motor starting surges so the unit stays cool and lasts longer. It suits heavy industrial plant — furnaces, rolling mills and full-factory main lines. Send your machine list and we confirm the right rating.

The 400 KVA Servo Stabilizer is a three phase (415V, 4-wire) unit — standard for industrial loads of this size. For smaller single phase requirements we also build ratings up to 15 KVA.

On a three phase 415V supply the approximate full-load current is 556 A per phase. We size the input/output MCCB and bypass switch accordingly.

Get a price for the 400 KVA Servo Stabilizer.

Share your load — we size and price within a day.

+91 81788 87426