gas relay 09/07/2026 9
QJ12-80 Dual-Float Buchholz Relay Gas-Actuated Relay for Oil-Immersed Transformer Protection Model: QJ12-80 | DN80 | Complies with IEC 60076-1 1. Product Introduction The QJ12-80 Buchholz Relay (also known as a gas-actuated relay) is a critical protective device installed in the connecting pipe between the transformer tank and the conservator (oil storage tank). It continuou??
gas relay 09/07/2026 9
QJ12-25 Dual-Float Buchholz Relay Gas-Actuated Relay with Dual Float Switches for Transformer Protection Model: QJ12-25 | Connection: DN25 | Standard: IEC 60076-1 1. Product Introduction The QJ12-25 is a dual-float Buchholz relay (gas-actuated relay) installed in the piping between the transformer tank and the conservator. It provides internal-fault protection by detecting t??
gas relay 09/04/2026 11
QJ4-80 Buchholz Relay Gas-Actuated Relay for Transformer Protection Model: QJ4-80 | IEC 60076-1 / GB/T 6451 1. Product Introduction The Buchholz relay is a gas- and oil-actuated protective relay installed in the piping between the transformer tank and the conservator (oil reservoir). As the primary internal fault protection device for oil-immersed transformers, it detects the generation of fault ga??
Transformer 07/17/2026 27
Product Model: ODFS-334000/500 Rated Capacity: 334 / 334 / 100 MVA Voltage Combination: (525/√3 kV) / (230/√3 ± 2×2.5%) / 36 kV Cooling Method: ONAN/ONAF (70%/100%) Vector Group: Ia0i0 The ODFS-334000/500 power transformer, designed and manufactured by our company, is a typical product of State Grid Corporation of China. It features a rational structure, reliable insulation, low losses, low partial dischar??
Transformer 07/17/2026 25
The SSZ11-240000/220 power transformer is a flagship product manufactured by our company. We utilize advanced computer simulation software to analyze and calculate the electromagnetic, mechanical, and thermal characteristics of the transformer, guiding the structural design to achieve a more rational and optimized layout. The product features low losses, low temperature rise, low partial discharge, low noise, and high short-ci??
Transformer 07/17/2026 20
Product Model: SZ11-50000/110 Rated Capacity: 50/50 MVA Voltage Combination: 110±8×1.25% / 10.5 kV Cooling Method: ONAN (Oil Natural Air Natural) Vector Group: YNd11 The SZ11-50000/110 power transformer, designed and manufactured by our company, has successfully passed the short-circuit withstand verification test of State Grid Corporation of China (SGCC) and the 110 kV transformer qualification review of ??
Transformer 07/17/2026 19
This product complies with both IEEE (American) and CSA (Canadian) standards. It features low losses, low temperature rise, high short-circuit withstand capability, and the ability to operate under extreme low-temperature cold-start conditions down to -50°C. The industry-first gas-guided structure has successfully passed the CSA-unique gas collection test in a single attempt. The product is now operating safely at the Claresholm ??
Transformer 07/17/2026 23
This product has thoroughly resolved key technical challenges such as short-circuit withstand capability, coil hot-spot temperature rise, local overheating, partial discharge, oil flow electrification, and noise. All its technical performance indicators rank at the domestically leading level. The product is currently in operation at the Houshi Power Plant Station in Zhangzhou, Fujian Province, and has received high recognition fr??
Transformer 07/17/2026 22
This product features ultra-low losses, low noise, low partial discharge, strong short-circuit withstand capability, and no local overheating. It meets the Level 1 energy efficiency standard under the new energy efficiency regulations. The product offers stable performance and reliable quality, with all technical performance indicators ranking at the domestically leading level. It is mainly applied in State Grid projects and new ??
Transformer 07/17/2026 22
Technical Parameters & Product Description Rated Capacity: 1,000 / 1,000 / 334 MVA Voltage Combination: HV: (1,050/√3) kV MV: (525/√3 ± 4 × 1.25%) kV LV: 110 kV Cooling Method: Main unit: OFAF (Forced Oil / Forced Air) Voltage regulation & compensation unit: ONAN (Oil Natural / Air Natural) Connection Symbol: Ia0i0