Winley’s 6,500 kVA dry‑type cast resin transformer is engineered for reliable, low‑maintenance power distribution in commercial, industrial and utility indoor installations. Designed and manufactured to AS 60076 and AS 3000 standards, this transformer provides robust performance, excellent dielectric safety and low harmonic distortion for critical systems where fire safety, compact footprint and environmental friendliness are priorities.

Product Photos

Main data

No.	Particulars	Unit	Specification
1	Type	~	dry type, cast resin
2	Rated capacity	kVA	6500
3	Duty	~	Continuous duty
4	No. of Phase	~	3
5	Primary voltage	V	33000
6	Secondary voltage	V	900
7	Tapping type	~	off-circuit
8	Tapping range	%	±2*2.5%
9	Cooling method	~	AN/AF
10	Rated frequency	Hz	50
11	Vector group	~	Dyn11
12	Insulation class	~	F
13	Temperature rise	℃	100

Technical drawings

Built in accordance with AS/NZS 60076 and wiring per AS/NZS 3000 to ensure regulatory compliance, safety and interoperability with Australian/New Zealand power systems.

Standard Features

Cooling fans for AN/AF operation to maintain thermal margins under higher load or elevated ambient temperatures.
Temperature monitoring: Nine PT100 sensors on the low‑voltage winding plus a resistance temperature device for thorough thermal supervision and integration with protecting/control systems.
Wiring and identification: All wiring and heat shrink materials installed to AS/NZS 3000. Phase identification follows the color code — Phase A (a): red, Phase B (b): white, Phase C (c): blue.

The transformers have the following characteristics:

Windings have high mechanical strength and no partial discharge.
Epoxy resin and insulating materials used for windings are non-flammable, will not burn from an electric arc, and no toxic gases will be given off when the resin is burned.
Envionmental adaptability with windings that will not absorb moisture and a special anti-rust protective coating that seals the core and frame.
Operates under one-hundred percent relative humidity and other severe ambient conditions.
Ability to switch on the device without pre-drying or long periods of service interruptions.
Excellent short-circuit and lighting impulse strength.
Cooled naturally by air (AN) and forced air cooling (AF) provided as an option to improve overload capacity.
Smaller dimensions, less weight, and space saving.
Oil drainage pits and fire extinguishing devices not required for operation.

Production process

High-voltage winding appliesvacuumpouring of padding epoxyresin which, at highlevel,reduces partial discharge capacity andelevates the electric strength of coils. The insideand outside of the winding is buildup with glassfiber grid overlaywhich strengthens thethemechanicalrobustnessandimprovesresistance of short-circuits and ensures the coilswill never crack.

Low-voltage winding applies the structure that windedby copper foil which solves the problem that the axle wouldpoint to the helix angle when winds and make the ampereturn of winding distribute evenly. Meanwhile, the coilsapplies axial fan which improves the heat dispersion.Between the layers of winding, it applies DMD epoxy resinpreliminary dip cloth and makes it whole solidificationfor

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6500kva Cast Coil Epoxy Resin Transformer Dry Type 33000V To 900V AS60076 AS3000 Standards