{"id":2185,"date":"2026-03-23T08:51:00","date_gmt":"2026-03-23T08:51:00","guid":{"rendered":"https:\/\/yawei-powertransformer.com\/?post_type=product&p=2185"},"modified":"2026-03-23T08:54:39","modified_gmt":"2026-03-23T08:54:39","slug":"1250-kva-three-phase-step-down-distribution-transformer-oil-immersed-11kv-33kv-to-400v","status":"publish","type":"product","link":"https:\/\/yawei-powertransformer.com\/zh\/manufacturer\/1250-kva-three-phase-step-down-distribution-transformer-oil-immersed-11kv-33kv-to-400v\/","title":{"rendered":"1250 kVA \u4e09\u76f8\u964d\u58d3\u914d\u96fb\u8b8a\u58d3\u5668 | \u6cb9\u6d78\u5f0f 11kV\/33kV \u81f3 400V"},"content":{"rendered":"

The 1250\u202fkVA three-phase step-down distribution transformer<\/a> is an industrial-grade, oil-immersed transformer designed for medium- and low-voltage power distribution in industrial, commercial, utility, and infrastructure projects. Engineered for high efficiency, reliable performance, and long service life, it converts 11\u202fkV\/33\u202fkV to 400\u202fV, suitable for indoor, outdoor, or substation installations worldwide.<\/p>\n

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\ud83d\udd39 Key Specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nDetails<\/th>\n<\/tr>\n
Rated Capacity<\/td>\n1250\u202fkVA (customizable, typical range 50\u201312,500\u202fkVA)<\/td>\n<\/tr>\n
Phase<\/td>\nThree-Phase<\/td>\n<\/tr>\n
Primary Voltage<\/td>\n11\u202fkV, 22\u202fkV, 33\u202fkV (customizable)<\/td>\n<\/tr>\n
Secondary Voltage<\/td>\n400\u202fV, 415\u202fV, 480\u202fV, 230\u202fV, or project-specific<\/td>\n<\/tr>\n
Transformer Type<\/td>\nOil-Immersed, Step-Down Distribution Transformer<\/td>\n<\/tr>\n
Installation Type<\/td>\nIndoor, outdoor, substation, pad-mounted, or enclosure-installed<\/td>\n<\/tr>\n
Cooling Method<\/td>\nONAN (natural oil), optional OFAF (forced oil cooling)<\/td>\n<\/tr>\n
Winding Configuration<\/td>\nGrounded Wye \/ Wye, Delta, or custom vector groups<\/td>\n<\/tr>\n
Voltage Regulation<\/td>\nOff-circuit tap changer (standard); optional OLTC<\/td>\n<\/tr>\n
Insulation System<\/td>\nMineral oil-immersed, eco-friendly, conservator tank, breather, protective devices<\/td>\n<\/tr>\n
Applicable Standards<\/td>\nIEC \/ ANSI \/ IEEE \/ GB\/T<\/td>\n<\/tr>\n
Dimensions (L\u00d7W\u00d7H)<\/td>\nTypical: 2500 \u00d7 1500 \u00d7 2200 mm (customizable)<\/td>\n<\/tr>\n
Weight<\/td>\nApprox. 5,200 kg (depends on voltage and configuration)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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\n\t\t\t\"1250\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n