160 kVA Distribution Transformer (33kV)
Industrial 160 kVA distribution transformer stepping down 33kV to 415V. Engineered for reliable operation in demanding electrical environments with on-load tap changing.
Ref. DIST-160-33KV · Lead time 6–8 weeks · Made to order from Hapur
See full engineering specification & variants
Key Features
Recommended For
Specifications
| Specification | Value |
|---|---|
| Capacity | 160 kVA |
| Primary Voltage | 33000V (±5%) |
| Secondary Voltage | 415V (±5%) |
| Frequency | 50 Hz |
| Tap Changer | On-load ±2 × 2.5% |
| Cooling Method | both air and oil cooled |
| Copper Loss | ~2300W |
| Iron Loss | ~950W |
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 160 kVA specifically, not the range in general.
8,322 kWh/year
Iron loss of 950 W is drawn whenever the transformer is energised, whether or not anything is connected. Over a year that is 8,322 kWh — about ₹66,576 at ₹8/kWh. It is the figure worth comparing between quotes, because you pay it for the full 25-year life regardless of load.
97.8%
At full load and 0.9 power factor, total losses of 3,250 W give roughly 97.8% efficiency. Copper loss varies with the square of load, so a transformer run at half capacity dissipates about a quarter of that 2,300 W — oversizing costs you standing loss, not copper loss.
33000V
At this rating the 33 kV yard is a meaningful share of total project cost, and it scales with voltage class rather than with capacity. That is worth knowing before you finalise the rating: the incremental cost of a larger transformer is small next to the yard you are building either way. Confirm the sanctioned voltage with the DISCOM first — a 33 kV unit cannot be fed from an 11 kV line.
On-load ±2 × 2.5%
The tap changer trims the ratio across roughly 31.35–34.65 kV on the primary, which is what holds your 415 V board steady when the incoming supply sits persistently high or low. On-load switching matters at 160 kVA: you can retap without dropping the site, which on a load this size is the difference between a tap change and a shutdown.
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 160 kVA the right choice?
160 kVA covers a medium manufacturing unit's full connected load — a plastics or packaging plant with 10 to 15 machines, a mid-sized cold chain facility, or a hospital block including its HVAC. At 33 kV this is the rating where the transformer stops being an appendix to the site and becomes its defining electrical asset: the HT yard, statutory clearances and inspector approval you build for 160 kVA are the same ones you would build for 250 kVA. If there is any prospect of expansion within five years, price both before committing — the incremental cost of the larger unit is small next to the cost of rebuilding the yard. The on-load tap changer handles the seasonal drift typical of long 33 kV feeders.
Before you order
Where 160 kVA goes in, and what the site needs
Typical installations
We supply 160 kVA most often into medium industrial complexes, power distribution networks, utility substations and manufacturing clusters, alongside hospital power centers and data center feeders. 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.
Statutory requirements
A 33 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 6–8 weeks manufacturing lead time, and it is the step that delays energisation far more often than the transformer does.
Adjacent ratings
If 160 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 Transformer250 kVA Distribution Transformer (33kV)
Extra-large capacity distribution transformer for comprehensive power distribution.
View specificationDistribution Transformer63 kVA Distribution Transformer (11kV)
63 kVA distribution transformer for medium-scale power distribution.
View specificationDistribution Transformer25 kVA Distribution Transformer (11kV)
Standard distribution transformer for 25 kVA load, 11kV primary voltage.
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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