Hebei Qichuang Electric Power Equipment Co., Ltd.-The company specializes in products such as dry-type transformers, oil-immersed transformers, box-type substations, high- and low-voltage distribution cabinets, transformer cores, and silicon steel, which are widely used in sectors including electric power, new energy, industrial manufacturing, and infrastructure.

Oil-immersed transformer

Amorphous alloy oil-immersed transformer

Transformers convert grid voltage to the levels required by systems or loads, enabling the transmission and distribution of electrical energy. The S(B)H-M series amorphous alloy oil-immersed transformer is a type of energy-efficient power distribution equipment; its energy-saving performance stems primarily from the use of a novel iron-based amorphous alloy material characterized by excellent soft magnetic properties.

Transformers convert grid voltage to the levels required by systems or loads, enabling the transmission and distribution of electrical energy. The S(B)H-M series amorphous alloy oil-immersed transformer is an energy-efficient distribution unit; its energy-saving performance stems primarily from the use of a novel iron-based amorphous alloy material characterized by superior soft magnetic properties.

The products comply with national standards GB1094 ("Power Transformers") and GB/T25446-2010 ("Technical Parameters and Requirements for Oil-Immersed Amorphous Alloy Core Distribution Transformers").

Product Features

Amorphous alloy is a novel strip material; lacking a crystalline structure, it exhibits low magnetization power and high resistivity, resulting in minimal eddy-current losses.

Utilizing this material for the core enables the production of a new type of energy-efficient transformer, with no-load losses reduced by over 75% compared to standard S11 distribution transformers. The core features a wound, three-phase, five-limb structure with a rectangular cross-section.

The coils are rectangular in shape; the high-voltage winding uses acetal-enameled wire, while the low-voltage winding employs flat wire or copper foil, thereby enhancing the transformer's short-circuit withstand capability.

The transformer utilizes a Dyn11 connection group, which mitigates the impact of high-order harmonics and provides strong resistance to unbalanced loads, significantly improving power supply quality.

Vacuum oil filling is employed to completely eliminate air bubbles within the coils, ensuring stable insulation performance. The traditional oil conservator is eliminated; instead, corrugated or fin-type radiators serve as cooling components. A gas cushion atop the oil tank compresses as the transformer oil expands, isolating the oil from the atmosphere. This prevents oil degradation and insulation moisture absorption, enhances operational reliability, and ensures maintenance-free operation under normal conditions.

Standard Specifications

RatedCapacity(kVA)	Level 1 (Type 25)	Level 2 (Type 21)	Level 3 (Type 15)	Short-circuit Impedance %
Electrical Steel Strip	Electrical Steel Strip	Electrical Steel Strip
No-load Loss (W)	Load Loss (W)	No-load Loss (W)	Load Loss (W)	No-load Loss (W)	Load Loss (W)
Dyn11/Yzn11	Yyno	Dyn11/Yzn11	Yyno	Dyn11/Yzn11	Yyno
30	25	510	480	33	535	510	33	630	600	4.0
50	35	735	700	43	780	745	43	910	870
63	40	880	840	50	930	890	50	1090	1040
80	50	1060	1010	60	1120	1070	60	1310	1250
100	60	1270	1215	75	1350	1285	75	1580	1500
125	70	1530	1450	85	1615	1540	85	1890	1800
160	80	1870	1780	100	1975	1880	100	2310	2200
200	95	2210	2100	120	2330	2225	120	2730	2600
250	110	2590	2470	140	2735	2610	140	3200	3050
315	135	3100	2950	170	3275	3120	170	3830	3650
400	160	3660	3480	200	3865	3675	200	4520	4300
500	190	4380	4170	240	4625	4400	240	5410	5150
630	250	5020	320	5300	320	6200	4.5
800	300	6075	380	6415	380	7500
1000	360	8340	450	8800	450	10300
1250	425	9720	530	10260	530	12000
1600	500	11745	630	12400	630	14500
2000	550	14000	710	14800	720	18300	5.0
2500	670	15450	860	16300	865	21200

Solutions

High-quality dry-type transformers with flame-retardant, low-noise and compact design. Compliant with national standards for safe and quiet operation.

01 Urban Civil Building Sector

Solutions

Premium dry-type transformers with strong overload resistance and long service life. Exceeds industry standards for efficient infrastructure power systems.

02 Infrastructure Sector

Solutions

High-efficiency specialized transformers with low loss and anti-harmonic features. Optimizes energy conversion for greener and smarter new energy projects.

03 New Energy Sector

Solutions

Advanced power transmission equipment with strong insulation and digital monitoring. Compliant with grid standards for robust and efficient modern power systems.

04 Power Industry Sector

Rapid Response

The engineering project team provides full-process support from installation guidance to industrial optimization. Through remote video and on-site communication, technical issues are quickly resolved to ensure stable equipment operation.

Technical Guidance

Regular Inspections

Technical Empowerment

Provide professional training covering installation, commissioning, and troubleshooting. Through digital technical disclosure, ensure the project site has independent operation and maintenance capabilities, improving global delivery quality.

O&M Practice

Remote Guidance

Quality Assurance

Relying on standardized mass production and a complete traceability mechanism, ensure long-term supply of core components, effectively reduce global supply chain risks, and maintain consistent equipment quality.

National Standard Quality

Stable Supply