(I) Product Introduction

This is an indoor, three-phase, double-winding, non-encapsulated (SGB) high-efficiency energy-saving dry-type transformer, namely SGB11/12/13/14/18-RL series triangular three-dimensional non-encapsulated dry-type transformer with sophisticated technology and superior performance.

① Equipped with triangular three-dimensional iron core for balanced three-phase operation and elimination of triple harmonics, delivering outstanding energy-saving performance.② Designed with Class-H insulation system; main insulation adopts Class-C NOME® paper featuring excellent heat resistance, flame retardancy and high fire rating.③ High-voltage windings adopt disc-type structure while low-voltage windings use foil-type construction, bringing low leakage reactance at winding ends and strong short-circuit withstand capacity.④ Low heat generation paired with excellent heat dissipation and high thermal insulation class allows continuous 20% overload operation for long-term service.⑤ The whole transformer core assembly goes through two rounds of vacuum pressure impregnation and curing, endowing the product with excellent moisture-proof, anti-corrosion property, low partial discharge and high operational safety & reliability.⑥ Easy disassembly upon end-of-service life with zero environmental pollution.

(II) Technical Specifications

Executive Standards: GB/T 1094.11-2007, GB/T 1094.1-2013, GB 20052-2020, GB/T 1094.11-2022Voltage Class: 6–35kVCapacity Range: 30–3150kVARated Frequency: 50Hz/60HzConnection Symbol: Dyn11, Yyn0 or other customized configurationsVoltage Regulation Mode: Off-circuit tap-changing or on-load tap-changingInsulation Level: L175 AC35/AC5Permissible Temperature Rise: 125KPartial Discharge Level: ≤5pCCooling Type: AN / AF

(III) Product Details