Description

Description of Oltc Distribution Transformer

Our Oltc Distribution Transformer stands out with state-of-the-art design, integrating game-changing advancements in material science, structural innovation, and precision manufacturing. A key highlight lies in its robust framework: high and low-voltage clamps are fortified using high-tensile steel straps or reinforced upper/side beams, creating a rigid, integrated frame. This engineering choice amplifies iron core clamping pressure significantly while boosting resilience against transportation vibrations and sudden impacts—ensuring structural integrity even in rigorous logistics.

Beyond durability, the transformer excels in performance: it delivers exceptional short-circuit withstand capability, thanks to optimized internal bracing. Its sleek, streamlined exterior combines functionality with visual appeal, making it a fit for diverse installation environments. Operators benefit from consistent, trouble-free performance, paired with ultra-low energy loss and minimal operational noise—attributes that place it on par with the most advanced international counterparts in its class.

Parameter of Oltc Distribution Transformer

Model	Rated Voltage			Connection Symbol	No-load Loss(w)	On Load Loss(w)	Short Circuit Impedance (%)
Model	H.V (kV)	HV Tap Changer	L.V (kV)	Connection Symbol	No-load Loss(w)	On Load Loss(w)	Short Circuit Impedance (%)
SZ11-2000	35	±3×2.5%	6.3 10.5	Yd11	2300	19200	6.5
SZ11-2500	35				2720	20600	6.5
SZ11-3150	35-38.5				3230	24700	7
SZ11-4000					3870	29100
SZ11-5000					4640	34200
SZ11-6300					5630	36700	8
SZ11-8000			6.3 6.6 10.5	YNd11	7870	40600
SZ11-10000					9280	48000
SZ11-12500					10900	56800
SZ11-16000					13100	70300
SZ11-20000					15500	82700
SZ11-25000					18300	97800	10
SZ11-31500					21800	116000	10

Feature of Oltc Distribution Transformer

The Oltc Distribution Transformer stands out with a suite of advanced features, blending innovation and reliability to redefine performance in power distribution.

Foil Coil Technology sets a new standard for low-voltage windings. Crafted using a continuous copper foil section, paired with F-class turn insulation, these coils are precision-wound on specialized low-voltage foil winding equipment. This design eliminates critical pain points in traditional coils: it mitigates high short-circuit stress in low-voltage, high-current setups, balances ampere-turns, enhances heat dissipation, and eliminates issues with winding helix angles and inconsistent manual weld quality. To boost durability, winding ends are encapsulated in resin and cured, creating a moisture-resistant, anti-fouling barrier. Lead copper bars are welded automatically via argon arc technology, ensuring seamless, high-integrity connections.

Intelligent Temperature Control adds a layer of operational safety. Equipped with a signal thermometer, the transformer embeds temperature-sensing elements in the upper section of low-voltage coils. This allows real-time, automatic detection and display of individual phase coil temperatures. Beyond monitoring, it includes over-temperature alarm and trip functions, preventing overloads and safeguarding long-term reliability.

Clear Insulation Level Indicators simplify specification and safety compliance. Insulation performance is graded, with clear labeling to denote capabilities. For example, a transformer with a 35kV high-voltage rating and 10kV low-voltage rating uses the designation LI200AC85/LI75AC35. Here, LI200 indicates the high-voltage side withstands 200kV lightning impulses and 85kV power frequency voltage, while LI75 denotes the low-voltage side handles 75kV lightning impulses and 35kV power frequency voltage—ensuring transparency and alignment with global safety standards.