35kV SC (B) Epoxy Resin Cast Dry‑Type Power Transformer

Features :
✅ Epoxy resin vacuum cast winding, fire‑resistant & explosion‑proof
✅ Low partial discharge ≤10pC, reliable high‑voltage insulation
✅Strong short‑circuit withstand capability, excellent dynamic‑thermal stability
✅ Forced‑air cooling, strong overload capacity
✅Built‑in intelligent temperature monitoring & fan control system
✅Customizable capacity, tap‑changer, anti‑condensation heater
✅Copper windings as standard, aluminum windings optional
✅Operable under high altitude up to 4500m &‑40℃ low‑temperature environment
✅Compliant with IEC international standards, service life ≥30 years

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Main Overview：

35 kV SC(B) series dry‑type power transformer adopts advanced epoxy resin vacuum casting technology to achieve fully sealed high‑voltage winding insulation. Capacity covers 800 kVA‑25 MVA.

F/H‑class insulation enables operation within‑40 ℃ ~ 155‑180 ℃. It supports direct connection to 35 kV grid, secondary output 3.15 kV‑11 kV.

Thanks to fire‑resistant, pollution‑free and low‑maintenance characteristics, this unit fits wind power stations, industrial substations and mine power supply. It adapts to harsh conditions up to 4500 m altitude, with design service life over 30 years.

Meaning of Model Number：

Meaning of Model Number	S	C	□	-	□	/	□
	Three-phase	Epoxy resin cast type	Performance level code		Rated capacity kVA		Voltage class kV

Product features：

Safety & Reliable Insulation
Triple‑layer insulation structure (conductor‑fiberglass reinforcement‑epoxy resin). Partial discharge ≤10 pC, 70 kV/1 min power frequency withstand voltage without flashover. Outstanding impulse‑withstand and short‑circuit resistance, stable dynamic and thermal performance under fault conditions.
Excellent Heat Dissipation & Overload Performance
Optimized air duct design via thermal simulation. Hot‑spot temperature rise is well controlled. Under forced‑air cooling, short‑term overload operation is available.
Intelligent Temperature Protection System
Integrated temperature detection unit cyclically displays three‑phase winding temperature. It automatically starts/stops cooling fans, provides over‑temperature alarm and trip signal output.
Custom‑Built For Harsh Working Conditions
Optional harmonic‑suppression winding, on‑load tap‑changer and anti‑condensation heating device for special‑purpose projects. Fire‑resistant, pollution‑free, low maintenance, suitable for indoor high‑safety‑requirement locations.

Main performance parameter table for 35kV class dry-type power transformer：

Model	Rated capacity （kVA）	Vector group	Voltage combination（kV）			No-load loss （W）	Load loss（W）120℃ （F）	No-load current （%）	Impedance voltage （%）
Model	Rated capacity （kVA）	Vector group	High voltage	Tapping range	Low voltage	No-load loss （W）	Load loss（W）120℃ （F）	No-load current （%）	Impedance voltage （%）
SC11-800	800	Dyn11 Yd11 Yyn0	35 36 37 38.5	±2x2.5% ±5%	3.15 6 6.3 10 10.5 11	2020	9400	0.85	6
SC11-1000	1000					2400	10900	0.85
SC11-1250	1250					2810	12900	0.75
SC11-1600	1600					3320	15400	0.75
SC11-2000	2000					3800	18200	0.65	7
SC11-2500	2500					4370	21800	0.65	7
SC11-3150	3150					5420	24500	0.6	8
SC11-4000	4000					6310	29400	0.6
SC11-5000	5000					7530	34900	0.55
SC11-6300	6300					8910	40800	0.55
SC11-8000	8000	Dyn11 Yd11 YNd11				10100	46000	0.45	9
SC11-10000	10000					11600	55500	0.45
SC11-12500	12500				6 6.3 10 10.5 11	14100	64600	0.35
SC11-16000	16000					17300	76000	0.35
SC11-20000	20000					20600	85500	0.3	10
SC11-25000	25000					24300	101000	0.3	10

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