SCBZ18-630/10 - TAIXUANTECH

SCBZ18-630/10 Three-Phase Two-Winding Dry-Type On-Load Tap-Changer Distribution Transformer

10kV Dry-Type Distribution Transformer Series

SCBZ18-630/10 Three-Phase Two-Winding Dry-Type On-Load Tap-Changer Distribution Transformer

The SCBZ18-630/10 is a three-phase, two-winding dry-type distribution transformer with epoxy resin casting and an on-load tap changer, rated at 630kVA and 10kV on the high-voltage side. It is designed for distribution systems with frequent voltage fluctuations and high requirements for supply continuity. The transformer features vacuum-cast epoxy resin insulation, providing excellent flame retardancy and pollution resistance. The core is made of high-quality cold-rolled grain-oriented silicon steel, and low-voltage windings use copper foil conductors. Equipped with a vacuum on-load tap changer and automatic voltage controller, it can regulate voltage under load without interrupting power supply.

Data Center Industrial & Commercial Utility & Grid

Rated Capacity: 630 kVA
Rated Voltage Ratio: 10/0.4 kV
Connection Group: Dyn11
Cooling Method: AN
Energy Efficiency Class: N/A
Standard：IEC 60076, GB/T 10228-2023

Product Details

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Product Model SCBZ18-630/10

No-Load Loss ≤0.89 kW

Rated Capacity 630 kVA

No-Load Current ≤0.7%

Phase 3-phase

Load Loss (120°C) ≤5.55 kW

Rated Voltage Ratio 10/0.4 kV

Short-Circuit Impedance 6%

HV Tapping Range ±4×2.5%

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

Rated Frequency 50 Hz

Noise (Sound Pressure Level) ≤52 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 N/A

01.

Core advantages

On-Load Tap Changer (OLTC)

Equipped with a vacuum on-load tap changer, the transformer regulates voltage under load without interrupting power supply. Ideal for grids with frequent voltage fluctuations and critical load applications where continuous power supply is essential. The tapping range is 10±4×2.5% (9 positions).

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 distribution rooms and public buildings.

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, on-load tap-changer, distribution transformer, 315-2500kVA
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 (%)
SCBZ18-315/10	315	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	0.59	3.06	3.25	3.47	4
SCBZ14-315/10	315	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	0.67	3.06	3.25	3.47	4
SCBZ12-315/10	315	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	0.79	3.40	3.61	3.86	4
SCBZ18-400/10	400	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	0.67	3.62	3.84	4.11	4
SCBZ14-400/10	400	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	0.76	3.62	3.84	4.11	4
SCBZ12-400/10	400	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	0.89	4.02	4.27	4.57	4
SCBZ18-500/10	500	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	0.77	4.43	4.70	5.02	4
SCBZ14-500/10	500	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	0.88	4.43	4.70	5.02	4
SCBZ12-500/10	500	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.03	4.92	5.22	5.58	4
SCBZ18-630/10	630	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	0.89	5.24	5.55	5.94	4
SCBZ14-630/10	630	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.01	5.24	5.55	5.94	4
SCBZ12-630/10	630	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.19	5.82	6.17	6.60	4
SCBZ18-800/10	800	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.02	6.36	6.75	7.22	6
SCBZ14-800/10	800	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.16	6.36	6.75	7.22	6
SCBZ12-800/10	800	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.36	7.07	7.50	8.02	6
SCBZ18-1000/10	1000	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.19	7.45	7.90	8.45	6
SCBZ14-1000/10	1000	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.34	7.45	7.90	8.45	6
SCBZ12-1000/10	1000	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.58	8.28	8.78	9.39	6
SCBZ18-1250/10	1250	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.40	8.87	9.36	9.99	6
SCBZ14-1250/10	1250	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.59	8.87	9.36	9.99	6
SCBZ12-1250/10	1250	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.87	9.86	10.40	11.10	6
SCBZ18-1600/10	1600	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.63	10.53	11.16	11.97	6
SCBZ14-1600/10	1600	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	1.84	10.53	11.16	11.97	6
SCBZ12-1600/10	1600	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	2.17	11.70	12.40	13.30	6
SCBZ18-2000/10	2000	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	2.05	12.87	13.68	14.58	6
SCBZ14-2000/10	2000	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	2.32	12.87	13.68	14.58	6
SCBZ12-2000/10	2000	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	2.73	14.30	15.20	16.20	6
SCBZ18-2500/10	2500	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	2.37	15.39	16.29	17.46	6
SCBZ14-2500/10	2500	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	2.69	15.39	16.29	17.46	6
SCBZ12-2500/10	2500	10，10.5，11	±4×2.5%	0.4	Dyn11，Yyn0	3.16	17.10	18.10	19.40	6
Note： 1.±4×2.5% is shown as the default tapping range 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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SCBZ18-630/10 Three-Phase Two-Winding Dry-Type On-Load Tap-Changer Distribution Transformer

10kV Dry-Type Distribution Transformer Series

SCBZ18-630/10 Three-Phase Two-Winding Dry-Type On-Load Tap-Changer Distribution Transformer