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20kV Dry-type Distribution Transformer SC(B)12-NX3 Energy Efficiency Level 3 2000kVA

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Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd.

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20kV Dry-type Distribution Transformer SC(B)12-NX3 Energy Efficiency Level 3 2000kVA

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Brand Name :	GuangGao
Model Number :	D
Certification :	ISO CESI UL KEMA
Payment Terms :	T/T L/C

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20kV Dry-type Distribution Transformer SC(B)12-NX3 Energy Efficiency Level 3 2000kVA

20kV Dry-type Distribution Transformer SC(B)12-NX3 Energy Efficiency Level 3

Product Specifications

20kV dry-type distribution transformer SC(B)12-NX3 energy efficiency level 3
Capacity(kVA)	Voltage Combination			Vector group	No load loss(W)(W)	Full Load Loss (W)		Short Circuit Impedance (%)
Capacity(kVA)	HV(kV)	H.V. Tapping Range	LV(kV)	Vector group	No load loss(W)(W)	F(120℃)	H(145℃)	Short Circuit Impedance (%)
50	20 22 24	±5%/ ±2×2.5%	0.4	Dyn11 Yyn0	272	1110	1180	6
100					432	1790	1920
160					536	2220	2380
200					584	2650	2830
250					672	3080	3290
315					776	3670	3920
400					920	4360	4660
500					1080	5210	5570
630					1220	6160	6590
800					1400	7430	7960
1000					1660	8800	9360
1250					1900	10400	11100
1600					2230	12400	13300
2000					2590	14700	15800
2500					3100	17400	18600
2000					2590	16000	17200	8
2500					3100	19100	20400	8

* Above specification may be changed to improve performance.

* Transformer of other specification than listed above can be made to order.

Product Overview

Product Type
This equipment is an epoxy resin cast dry-type distribution transformer, featuring air-based insulation and cooling systems. Unlike traditional oil-immersed transformers, its oil-free structure rules out oil leakage hazards entirely—this design upgrade directly elevates operational safety, especially in enclosed spaces.
Model Interpretation
"SC(B)" denotes epoxy resin cast dry-type transformers, where each letter reflects key performance traits: "S" = three-phase operation (for stable power supply), "C" = cast insulation (enhancing durability), "B" = low-voltage foil winding (improving current-carrying capacity). "12" serves as the design serial number, aligned with industry-specific technical norms to ensure consistent quality. "NX3" is a manufacturer-customized suffix, typically tied to structural refinements (e.g., space-saving designs) or scenario-specific tweaks (e.g., humidity adaptation). "Energy Efficiency Class 3" meets the minimum energy efficiency criteria in national distribution transformer standards, delivering balanced power usage for basic needs.
Core Advantages & Application Scenarios
Boasting reliable moisture and dust resistance, it performs well in harsh environments like damp workshops or dusty warehouses—no extra protective enclosures are needed. It’s also suitable for direct installation in indoor distribution rooms, such as those in shopping malls or residential underground garages. Its heat dissipation system is optimized for medium-low load operations, striking a great balance between performance and cost. This makes it a top pick for projects that prioritize basic safety and budget control over high energy efficiency, such as small retail outlets or standard residential community power distribution systems.