SCB18-1000/10-NX1 - TAIXUANTECH

SCB18-1000/10-NX1 Three-Phase Two-Winding Dry-Type Air-Cooled Off-Circuit Tap-Changer Distribution Transformer

10kV Dry-Type Distribution Transformer Series

SCB18-1000/10-NX1 Three-Phase Two-Winding Dry-Type Air-Cooled Off-Circuit Tap-Changer Distribution Transformer

The SCB18-1000/10-NX1 is a three-phase, two-winding dry-type distribution transformer with epoxy resin casting and an off-circuit tap changer, rated at 1000kVA and 10kV on the high-voltage side. Designed to meet Class 1 energy efficiency (NX1) under GB 20052-2024, its actual no-load and load losses are typically lower than the standard limits, depending on design and manufacturing. Detailed test data can be provided upon request. The transformer features vacuum-cast epoxy resin insulation, offering excellent flame retardancy, moisture resistance, and maintenance-free operation. The core is made of high-quality cold-rolled grain-oriented silicon steel, and windings use oxygen-free copper 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 high energy efficiency are essential.

Data Center Industrial & Commercial Utility & Grid

Rated Capacity: 1000 kVA
Rated Voltage Ratio: 10/0.4 kV
Connection Group: Dyn11
Cooling Method: AN
Energy Efficiency Class: NX1
Standard：IEC 60076, GB/T 10228-2023

Product Details

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Product Model SCB18-1000/10-NX1

No-Load Loss ≤1.02 kW

Rated Capacity 1000 kVA

No-Load Current ≤0.7%

Phase 3-phase

Load Loss (120°C) ≤7.315 kW

Rated Voltage Ratio 10/0.4 kV

Short-Circuit Impedance 6%

HV Tapping Range ±5%

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

Rated Frequency 50 Hz

Noise (Sound Pressure Level) ≤55 dB(A)

Connection Group Dyn11 (Yyn0 available upon request)

Protection Degree IP20 (IP23 available)

Cooling Method AN

Standard IEC 60076, GB/T 10228-2023

Insulation Class F (155°C), LI75 AC28 / AC5

Energy Efficiency Class NX1

01.

Core advantages

Class 1 Energy Efficiency (NX1)

Complies with GB 20052-2024 Class 1 energy efficiency standard. Compared with SCB14, no-load loss is reduced by approximately 15%, delivering significant energy savings over the transformer's service life, especially for continuous light-load applications such as data centers and commercial buildings

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. The transformer is maintenance-free and suitable for indoor installation, including basements, tunnels, and other enclosed spaces

Low Partial Discharge & Low Temperature Rise

Optimized insulation structure and foil-wound windings ensure low partial discharge and low temperature rise. The transformer maintains stable operation under continuous load, with strong short-circuit withstand capability and long service life.

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

10kV Dry-Type Distribution Transformer Series – Full Specifications

10kV, 3-phase, 2-winding, dry-type, off-circuit tap-changer, distribution transformer, 30-2500kVA
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 (%)
SCB18-30/10-NX1	30	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.105	0.605	0.640	0.685	4
SCB14-30/10-NX2	30	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.130	0.605	0.640	0.685	4
SCB12-30/10-NX3	30	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.150	0.670	0.710	0.760	4
SCB18-50/10-NX1	50	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.155	0.845	0.900	0.965	4
SCB14-50/10-NX2	50	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.185	0.845	0.900	0.965	4
SCB12-50/10-NX3	50	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.215	0.940	1.000	1.070	4
SCB18-80/10-NX1	80	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.210	1.160	1.240	1.330	4
SCB14-80/10-NX2	80	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.250	1.160	1.240	1.330	4
SCB12-80/10-NX3	80	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.295	1.290	1.380	1.480	4
SCB18-100/10-NX1	100	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.230	1.330	1.415	1.520	4
SCB14-100/10-NX2	100	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.270	1.330	1.415	1.520	4
SCB12-100/10-NX3	100	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.320	1.480	1.570	1.690	4
SCB18-125/10-NX1	125	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.270	1.565	1.665	1.780	4
SCB14-125/10-NX2	125	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.320	1.565	1.665	1.780	4
SCB12-125/10-NX3	125	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.375	1.740	1.850	1.980	4
SCB18-160/10-NX1	160	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.310	1.800	1.915	2.050	4
SCB14-160/10-NX2	160	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.365	1.800	1.915	2.050	4
SCB12-160/10-NX3	160	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.430	2.000	2.130	2.280	4
SCB18-200/10-NX1	200	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.360	2.135	2.275	2.440	4
SCB14-200/10-NX2	200	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.420	2.135	2.275	2.440	4
SCB12-200/10-NX3	200	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.495	2.370	2.530	2.710	4
SCB18-250/10-NX1	250	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.415	2.330	2.485	2.665	4
SCB14-250/10-NX2	250	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.490	2.330	2.485	2.665	4
SCB12-250/10-NX3	250	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.575	2.590	2.760	2.960	4
SCB18-315/10-NX1	315	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.510	2.945	3.125	3.355	4
SCB14-315/10-NX2	315	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.600	2.945	3.125	3.355	4
SCB12-315/10-NX3	315	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.705	3.270	3.470	3.730	4
SCB18-400/10-NX1	400	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.570	3.375	3.590	3.850	4
SCB14-400/10-NX2	400	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.665	3.375	3.590	3.850	4
SCB12-400/10-NX3	400	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.785	3.750	3.990	4.280	4
SCB18-500/10-NX1	500	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.670	4.130	4.390	4.705	4
SCB14-500/10-NX2	500	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.790	4.130	4.390	4.705	4
SCB12-500/10-NX3	500	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.930	4.590	4.880	5.230	4
SCB18-630/10-NX1	630	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.775	4.975	5.290	5.660	4
SCB14-630/10-NX2	630	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.910	4.975	5.290	5.660	4
SCB12-630/10-NX3	630	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.070	5.530	5.880	6.290	4
SCB18-800/10-NX1	800	10，10.5，11	±5%	0.4	Dyn11，Yyn0	0.875	5.895	6.265	6.715	6~8
SCB14-800/10-NX2	800	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.035	5.895	6.265	6.715	6~8
SCB12-800/10-NX3	800	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.215	6.550	6.960	7.460	6~8
SCB18-1000/10-NX1	1000	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.020	6.885	7.315	7.885	6~8
SCB14-1000/10-NX2	1000	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.205	6.885	7.315	7.885	6~8
SCB12-1000/10-NX3	1000	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.415	7.650	8.130	8.760	6~8
SCB18-1250/10-NX1	1250	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.205	8.190	8.720	9.335	6~8
SCB14-1250/10-NX2	1250	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.420	8.190	8.720	9.335	6~8
SCB12-1250/10-NX3	1250	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.670	9.100	9.690	10.370	6~8
SCB18-1600/10-NX1	1600	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.415	9.945	10.555	11.320	6~8
SCB14-1600/10-NX2	1600	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.335	9.945	10.555	11.320	6~8
SCB12-1600/10-NX3	1600	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.960	11.050	11.730	12.580	6~8
SCB18-2000/10-NX1	2000	10，10.5，11	±5%	0.4	Dyn11，Yyn0	1.760	12.240	13.005	14.005	6~8
SCB14-2000/10-NX2	2000	10，10.5，11	±5%	0.4	Dyn11，Yyn0	2.075	12.240	13.005	14.005	6~8
SCB12-2000/10-NX3	2000	10，10.5，11	±5%	0.4	Dyn11，Yyn0	2.440	13.600	14.450	15.560	6~8
SCB18-2500/10-NX1	2500	10，10.5，11	±5%	0.4	Dyn11，Yyn0	2.080	14.535	15.445	16.605	6~8
SCB14-2500/10-NX2	2500	10，10.5，11	±5%	0.4	Dyn11，Yyn0	2.450	14.535	15.445	16.605	6~8
SCB12-2500/10-NX3	2500	10，10.5，11	±5%	0.4	Dyn11，Yyn0	2.880	16.150	17.170	18.450	6~8
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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SCB18-1000/10-NX1 Three-Phase Two-Winding Dry-Type Air-Cooled Off-Circuit Tap-Changer Distribution Transformer

10kV Dry-Type Distribution Transformer Series

SCB18-1000/10-NX1 Three-Phase Two-Winding Dry-Type Air-Cooled Off-Circuit Tap-Changer Distribution Transformer