SCBH17-2500/35 - TAIXUANTECH

SCBH17-2500/35 Three-Phase Two-Winding Dry-Type Off-Circuit Tap-Changer Distribution Transformer

35kV Dry-Type Amorphous Alloy Distribution Transformer Series

SCBH17-2500/35 Three-Phase Two-Winding Dry-Type Off-Circuit Tap-Changer Distribution Transformer

The SCBH17-2500/35 is a three-phase, two-winding dry-type distribution transformer with epoxy resin casting, an amorphous alloy core, and an off-circuit tap changer, rated at 2500kVA and 35kV on the high-voltage side. The amorphous alloy core significantly reduces no-load loss compared with conventional silicon steel transformers, delivering substantial energy savings over the transformer’s service life. The transformer features vacuum-cast epoxy resin insulation, providing excellent flame retardancy, moisture resistance, and maintenance-free operation. The amorphous alloy core is made of high-quality ultra-thin alloy strips with a three-frame, three-column structure, and low-voltage windings use copper foil conductors, ensuring low partial discharge, low temperature rise, and strong short-circuit withstand capability. Typical applications include commercial buildings, hospitals, airports, metro stations, data centers, and other indoor locations where fire safety and reliable power supply are essential.

Data Center Industrial & Commercial Utility & Grid

Rated Capacity: 2500 kVA
Rated Voltage Ratio: 35/0.4 kV
Connection Group: Dyn11
Cooling Method: AN
Energy Efficiency Class: N/A
Standard：IEC 60076, GB/T 22072-2018

Product Details

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Product Model SCBH17-2500/35

No-Load Loss ≤1.332 kW

Rated Capacity 2500 kVA

No-Load Current ≤0.4%

Phase 3-phase

Load Loss (120°C) ≤20.71 kW

Rated Voltage Ratio 35/0.4 kV

Short-Circuit Impedance 6%

HV Tapping Range ±5%

Temperature Rise Limit Winding ≤100K (F-class)

Rated Frequency 50 Hz

Noise (Sound Pressure Level) ≤65 dB(A)

Connection Group Dyn11

Protection Degree IP20 (IP23 available)

Cooling Method AN

Standard IEC 60076, GB/T 22072-2018

Insulation Class F (155°C), LI170 AC70 / LI75 AC35

Energy Efficiency Class N/A

01.

Core advantages

Ultra-Low No-Load Loss

The amorphous alloy core reduces no-load loss by approximately 60–80% compared with conventional silicon steel transformers, and no-load current by approximately 70–85%. This advantage is most pronounced in continuous light-load applications such as commercial buildings and hospitals, where the transformer operates at low load for extended periods. Actual measured losses are typically lower than reference values, and detailed test data can be provided upon request.

Vacuum-Cast Epoxy Resin

High and low voltage windings are fully impregnated in F-class epoxy resin under vacuum conditions, providing excellent flame retardancy, moisture resistance, and pollution resistance. Partial discharge is typically below 5 pC. The transformer is maintenance-free and suitable for indoor installation, including basements, tunnels, and other enclosed spaces.

Low Noise & Strong Short-Circuit Withstand

Optimized core and winding design delivers low noise operation, suitable for hospitals, schools, and other noise-sensitive locations. The transformer maintains stable operation under continuous load with strong short-circuit withstand capability and a long service life. With forced-air cooling (AF), it can handle short-term overload up to 150% of rated capacity.

02.

Application scenarios

No data was found

01.

Authoritative Certification

Our transformers are CE certified, ensuring full compliance with EU safety, health, and environmental standards.

Our transformers are UL certified, confirming they meet rigorous ANSI/IEEE safety standards for North American market entry.

ASTA

Our transformers have obtained ASTA type-test certification, verifying IEC 60076 compliance.

EAC

Our transformers are EAC certified, ensuring compliance with safety and EMC regulations for the Eurasian market.

SASO

We provide SASO-compliant transformers and assist clients in obtaining the Batch Certificate of Conformity (CoC) through the SABER platform.

02.

Quality Assurance

Partner Factory Audit

Regular on-site audits of partner factories to verify ISO, CE, and UL certifications.

Full-Process Quality Control

From raw material inspection to pre-shipment final inspection, every unit is checked against specifications.

Comprehensive Test Reports

Each transformer includes a detailed factory test report. 100% full inspection before dispatch.

Third-Party Inspection Support

SGS, BV, or other accredited third-party inspection available upon customer request.

01.

Technical Documents

No data was found

02.

Certification Materials

No data was found

35kV Dry-Type Amorphous Alloy Distribution Transformer Series – Full Specifications

35kV, 3-phase, 2-winding, dry-type,amorphous alloy core,off-circuit tap-changer, distribution transformer, 50-2500kVA
Model	Rated Capacity (kVA)	HV (kV)	HV Tapping Range	LV (kV)	Vector Group	No-Load Loss (kW)	Load Loss (kW)			Impedance Voltage (%)
Model	Rated Capacity (kVA)	HV (kV)	HV Tapping Range	LV (kV)	Vector Group	No-Load Loss (kW)	B（100℃）	F（120℃）	H（145℃）	Impedance Voltage (%)
SCBH15-50/35	50	33，35，36，37，38.5	±5%	0.4	Dyn11	0.150	1.340	1.420	1.520	6
SCBH17-50/35	50	33，35，36，37，38.5	±5%	0.4	Dyn11	0.135	1.273	1.349	1.444	6
SCBH19-50/35	50	33，35，36，37，38.5	±5%	0.4	Dyn11	0.135	1.206	1.278	1.368	6
SCBH15-100/35	100	33，35，36，37，38.5	±5%	0.4	Dyn11	0.200	1.970	2.090	2.230	6
SCBH17-100/35	100	33，35，36，37，38.5	±5%	0.4	Dyn11	0.180	1.872	1.986	2.119	6
SCBH19-100/35	100	33，35，36，37，38.5	±5%	0.4	Dyn11	0.180	1.773	1.881	2.007	6
SCBH15-160/35	160	33，35，36，37，38.5	±5%	0.4	Dyn11	0.240	2.650	2.810	3.000	6
SCBH17-160/35	160	33，35，36，37，38.5	±5%	0.4	Dyn11	0.216	2.518	2.670	2.850	6
SCBH19-160/35	160	33，35，36，37，38.5	±5%	0.4	Dyn11	0.216	2.385	2.529	2.700	6
SCBH15-200/35	200	33，35，36，37，38.5	±5%	0.4	Dyn11	0.280	3.130	3.320	3.550	6
SCBH17-200/35	200	33，35，36，37，38.5	±5%	0.4	Dyn11	0.252	2.974	3.154	2.373	6
SCBH19-200/35	200	33，35，36，37，38.5	±5%	0.4	Dyn11	0.252	2.817	2.988	3.195	6
SCBH15-250/35	250	33，35，36，37，38.5	±5%	0.4	Dyn11	0.310	3.580	3.800	4.060	6
SCBH17-250/35	250	33，35，36，37，38.5	±5%	0.4	Dyn11	0.279	3.401	3.610	3.857	6
SCBH19-250/35	250	33，35，36，37，38.5	±5%	0.4	Dyn11	0.279	3.222	3.420	3.654	6
SCBH15-315/35	315	33，35，36，37，38.5	±5%	0.4	Dyn11	0.370	4.250	4.510	4.820	6
SCBH17-315/35	315	33，35，36，37，38.5	±5%	0.4	Dyn11	0.333	4.038	4.285	4.579	6
SCBH19-315/35	315	33，35，36，37，38.5	±5%	0.4	Dyn11	0.333	3.825	4.059	4.338	6
SCBH15-400/35	400	33，35，36，37，38.5	±5%	0.4	Dyn11	0.430	5.100	5.410	5.790	6
SCBH17-400/35	400	33，35，36，37，38.5	±5%	0.4	Dyn11	0.387	4.845	5.140	5.501	6
SCBH19-400/35	400	33，35，36，37，38.5	±5%	0.4	Dyn11	0.387	4.590	4.869	5.211	6
SCBH15-500/35	500	33，35，36，37，38.5	±5%	0.4	Dyn11	0.500	6.270	6.650	7.110	6
SCBH17-500/35	500	33，35，36，37，38.5	±5%	0.4	Dyn11	0.450	5.957	6.318	6.755	6
SCBH19-500/35	500	33，35，36，37，38.5	±5%	0.4	Dyn11	0.450	5.643	5.985	6.399	6
SCBH15-630/35	630	33，35，36，37，38.5	±5%	0.4	Dyn11	0.580	7.250	7.690	8.230	6
SCBH17-630/35	630	33，35，36，37，38.5	±5%	0.4	Dyn11	0.522	6.888	7.306	7.819	6
SCBH19-630/35	630	33，35，36，37，38.5	±5%	0.4	Dyn11	0.522	6.525	6.921	7.407	6
SCBH15-800/35	800	33，35，36，37，38.5	±5%	0.4	Dyn11	0.680	8.600	9.120	9.760	6
SCBH17-800/35	800	33，35，36，37，38.5	±5%	0.4	Dyn11	0.612	8.170	8.664	9.272	6
SCBH19-800/35	800	33，35，36，37，38.5	±5%	0.4	Dyn11	0.612	7.740	8.208	8.784	6
SCBH15-1000/35	1000	33，35，36，37，38.5	±5%	0.4	Dyn11	0.750	9.860	10.400	11.100	6
SCBH17-1000/35	1000	33，35，36，37，38.5	±5%	0.4	Dyn11	0.675	9.367	9.880	10.545	6
SCBH19-1000/35	1000	33，35，36，37，38.5	±5%	0.4	Dyn11	0.675	8.874	9.360	9.990	6
SCBH15-1250/35	1250	33，35，36，37，38.5	±5%	0.4	Dyn11	0.880	12.000	12.700	13.600	6
SCBH17-1250/35	1250	33，35，36，37，38.5	±5%	0.4	Dyn11	0.792	11.400	12.065	12.920	6
SCBH19-1250/35	1250	33，35，36，37，38.5	±5%	0.4	Dyn11	0.792	10.800	11.430	12.240	6
SCBH15-1600/35	1600	33，35，36，37，38.5	±5%	0.4	Dyn11	1.000	14.600	15.400	16.500	6
SCBH17-1600/35	1600	33，35，36，37，38.5	±5%	0.4	Dyn11	0.900	13.870	14.630	15.675	6
SCBH19-1600/35	1600	33，35，36，37，38.5	±5%	0.4	Dyn11	0.900	13.140	13.860	14.850	6
SCBH15-2000/35	2000	33，35，36，37，38.5	±5%	0.4	Dyn11	1.250	17.200	18.200	19.500	6
SCBH17-2000/35	2000	33，35，36，37，38.5	±5%	0.4	Dyn11	1.125	16.340	17.290	18.525	6
SCBH19-2000/35	2000	33，35，36，37，38.5	±5%	0.4	Dyn11	1.125	15.480	16.380	17.550	6
SCBH15-2500/35	2500	33，35，36，37，38.5	±5%	0.4	Dyn11	1.480	20.600	21.800	23.300	6
SCBH17-2500/35	2500	33，35，36，37，38.5	±5%	0.4	Dyn11	1.332	19.570	20.710	22.135	6
SCBH19-2500/35	2500	33，35，36，37，38.5	±5%	0.4	Dyn11	1.332	18.540	19.620	20.970	6
SCBH15-1600/35	1600	33，35，36，37，38.5	±5%	0.4	Dyn11	1.000	16.000	17.000	18.200	8
SCBH17-1600/35	1600	33，35，36，37，38.5	±5%	0.4	Dyn11	0.900	15.200	16.150	17.290	8
SCBH19-1600/35	1600	33，35，36，37，38.5	±5%	0.4	Dyn11	0.900	14.400	15.300	16.380	8
SCBH15-2000/35	2000	33，35，36，37，38.5	±5%	0.4	Dyn11	1.250	19.000	20.100	21.500	8
SCBH17-2000/35	2000	33，35，36，37，38.5	±5%	0.4	Dyn11	1.125	18.050	19.095	20.425	8
SCBH19-2000/35	2000	33，35，36，37，38.5	±5%	0.4	Dyn11	1.125	17.100	18.090	19.350	8
SCBH15-2500/35	2500	33，35，36，37，38.5	±5%	0.4	Dyn11	1.480	22.700	24.000	25.700	8
SCBH17-2500/35	2500	33，35，36，37，38.5	±5%	0.4	Dyn11	1.332	21.565	22.800	24.415	8
SCBH19-2500/35	2500	33，35，36，37，38.5	±5%	0.4	Dyn11	1.332	20.430	21.600	23.130	8
Note： 1.Tapping range options: ±5% or ±2×2.5%. ±5% is shown as default in this table. Other tapping ranges are available upon request. 2.Other high and low voltages are available upon request. 3.Vector group options: Dyn11 or Yyn0. Other vector groups are available upon request. 4.Insulation class: B/F/H available. Load losses are shown for reference temperatures of 100°C (Class B), 120°C (Class F), and 145°C (Class H) respectively. 5.For IEC, ANSI, or other standards, or special frequency requirements, please contact us for a customized datasheet.

* For specific product requests, please Contact Us for customized solutions to your needs.

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SCBH17-2500/35 Three-Phase Two-Winding Dry-Type Off-Circuit Tap-Changer Distribution Transformer

35kV Dry-Type Amorphous Alloy Distribution Transformer Series

SCBH17-2500/35 Three-Phase Two-Winding Dry-Type Off-Circuit Tap-Changer Distribution Transformer