63 kVA Distribution Transformer (11kV)
Reliable 63 kVA distribution transformer stepping down 11kV to 415V for medium industrial and commercial installations. Designed for high efficiency and reliable operation.
Ref. DIST-63-11KV · Lead time 5–6 weeks · Made to order from Hapur
See full engineering specification & variants
Key Features
Recommended For
Specifications
| Specification | Value |
|---|---|
| Capacity | 63 kVA |
| Primary Voltage | 11000V (±5%) |
| Secondary Voltage | 415V (±5%) |
| Frequency | 50 Hz |
| Cooling Method | both air and oil cooled |
| Copper Loss | ~800W |
| Iron Loss | ~350W |
| Weight | 1400 kg |
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 63 kVA specifically, not the range in general.
3,066 kWh/year
Iron loss of 350 W is drawn whenever the transformer is energised, whether or not anything is connected. Over a year that is 3,066 kWh — about ₹24,528 at ₹8/kWh. It is the figure worth comparing between quotes, because you pay it for the full 25-year life regardless of load.
98.0%
At full load and 0.9 power factor, total losses of 1,150 W give roughly 98.0% efficiency. Copper loss varies with the square of load, so a transformer run at half capacity dissipates about a quarter of that 800 W — oversizing costs you standing loss, not copper loss.
11000V
An 11 kV primary at this rating is the smallest HT connection that makes commercial sense. Below it the switchgear, metering and operator requirement usually outweigh the tariff benefit, and an LT connection from the DISCOM is the cheaper answer.
Running-cost figures assume a reference industrial tariff of ₹8/kWh and continuous energisation. Substitute your own tariff and duty hours for a site-specific number — we will run it with you on request.
Sizing Guide
When is 63 kVA the right choice?
63 kVA is a standard DISCOM rating and the most common first transformer for a small industrial park or commercial complex. It supports a connected load of roughly 45–55 kVA with sensible margin — a light engineering unit, a cold store with two compressor sets, or a municipal pumping station. This is where the economics of an HT connection start clearly favouring you: standing loss is still modest, and 11 kV switchgear at this size is standard shelf equipment rather than a custom build. If your load list already exceeds 55 kVA, the next standard rating is 100 kVA; there is nothing useful in between, and undersizing here shows up as overheating in the first hot season.
Before you order
Where 63 kVA goes in, and what the site needs
Typical installations
We supply 63 kVA most often into medium industrial parks, commercial complexes, municipal power distribution and industrial facilities, alongside school/college campuses and commercial establishments. What separates those sites is load factor. A transformer serving a steady process load and one serving a facility with a sharp evening peak have very different loss profiles over a year, even at an identical nameplate rating.
Site preparation
At 1,400 kg this is forklift work, and the forklift has to be rated for 1,400 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.
Statutory requirements
A 11 kV primary connection falls under CEA safety regulations: approved HT switchgear, earthing and statutory clearances, drawings submitted to the electrical inspector, and a certified operator for switching. Build that approval time into your programme — it routinely exceeds our 5–6 weeks manufacturing lead time, and it is the step that delays energisation far more often than the transformer does.
Adjacent ratings
If 63 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.
100 kVA Distribution Transformer (33kV)
Heavy-duty 100 kVA distribution transformer for medium-voltage grid integration.
View specificationDistribution Transformer25 kVA Distribution Transformer (11kV)
Standard distribution transformer for 25 kVA load, 11kV primary voltage.
View specificationDistribution Transformer160 kVA Distribution Transformer (33kV)
160 kVA distribution transformer for medium-scale grid integration.
View specificationDistribution Transformer250 kVA Distribution Transformer (33kV)
Extra-large capacity distribution transformer for comprehensive power distribution.
View specificationAlso in the transformer range
Different equipment rather than a different size — often specified alongside this on the same project.
50 kVA Three-Phase Ultra-Isolation Transformer
Industrial three-phase ultra-isolation transformer with advanced noise suppression.
View specificationIsolation Transformer20 kVA Three-Phase Isolation Transformer
Three-phase 20 kVA isolation transformer for medium-load equipment protection.
View specificationIsolation Transformer10 kVA Single-Phase Isolation Transformer
High-isolation single-phase transformer for sensitive electronic equipment protection.
View specificationEngineering detail on this configuration
The distribution transformer 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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