Jiangsu Hualai Electric Technology Co., Ltd.

Official Website: https://www.hualaipower.com 

Business Email: hualaipower@gmail.com

24/7 Global WhatsApp Line: +86 18852130008 / +86 1891488200

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Paraguay’s national power authority ANDE is rolling out large-scale underground vault substation renovation and urban grid digitalization projects across Asunción, Ciudad del Este and all inland departments, with billions of US dollars in ongoing and upcoming tender plans for submersible medium voltage equipment. The official technical standard EE.TT Nº 02.35.05 Rev.1 sets strict requirements for fully submersible IP68 SF6 operating cubicles, matched distribution transformers and complete underground power distribution systems. Most overseas suppliers rely on outsourced components and long delivery cycles, while Jiangsu Hualai Electric is a fully integrated vertical source factory with independent R&D, self-owned production workshops and full in-house testing labs. We independently develop, produce and test the full set of submersible SF6 ring main units and customized full copper transformers 100% compliant with ANDE’s full technical clauses, providing factory-direct pricing without middlemen, and sincerely invite ANDE official bidders, local Paraguayan EPC contractors, regional electrical distributors and mining & solar project investors for long-term frame contract cooperation.

Full Source Factory Core Advantages for Paraguay ANDE Projects

Unlike trading companies that outsource cabinets and transformers from third workshops, Hualai owns a 100-mu self-built industrial base with complete independent production chains covering raw material processing, stainless steel tank welding, SF6 gas assembly, copper winding, epoxy casting and finished product testing:

1. Independent R&D team with 10 senior electrical engineers, specially optimized equipment to fully meet all requirements of ANDE EE.TT Nº 02.35 Rev.1, including 3m full submersion IP68 rating, three-position load breakers, vacuum fault interrupters and remote RTU monitoring systems;

2. Self-controlled raw material supply chain: All transformers adopt 100% oxygen-free pure copper winding (no aluminum mixing), AISI304/316 stainless steel tank for switch cabinets, anti-corrosion thick coating adapted to Paraguay’s humid underground vault environment; official copper material certificate provided for every unit to avoid tender disqualification risks;

3. Full independent professional testing laboratory: Complete ANDE-specified type tests, routine tests and acceptance sampling tests are carried out in-house, including internal arc resistance, air tightness, lightning impulse, temperature rise and relay logic tests; all test reports are issued in Spanish bilingual version for tender submission;

4. Stable mass production capacity: Standard 2–6 way submersible switchgears and 400kVA matched full copper transformers have permanent stock, bulk tender lead time controlled within 20–35 days, far shorter than European suppliers’ 6–18 month delivery period;

5. Zero intermediate markup, direct ex-factory quotation, customized OEM/ODM service for cabinet color, brand logo, circuit layout as per ANDE tender drawings (Figure 1–16 circuit configurations).

ANDE Standard Submersible SF6 Switchgear + Matching Transformer Complete Series

1. IP68 Fully Submersible SF6 Operating Cubicle (Core Product for ANDE Vaults)

Fully comply with every clause of EE.TT Nº 02.35.05 Rev.1 technical specification:

· Protection grade IP68, capable of long-term full submersion under 3 meters water depth;

· AISI304 stainless fully sealed gas tank filled with SF6 insulating gas, vacuum fault interrupter + three-position (Close / Open / Earth) load disconnector;

· Built-in temperature compensated pressure gauge, automatic pressure relief valve, transparent visual windows for each circuit;

· Intelligent electronic overcurrent relay supporting IEC 60870-5 / DNP3 remote communication, 24–48V DC backup battery waterproof low voltage cabinet;

· Complete 2/3/4/5/6 circuit combinations consistent with ANDE’s 16 standard wiring diagrams for all underground vault tender needs.

2. Custom Full Copper Transformers Matched for Paraguayan Underground Substations

1. S13-M Oil Immersed Full Copper Transformer (Flagship 400kVA Model) Custom 23kV / 0.38kV 50Hz grid parameters matching Paraguay national grid; thickened anti-rust corrugated tank, low-loss silicon steel core, 25+ years service life, suitable for underground wet vault environments.

2. SCB14 Epoxy Cast Dry-Type Full Copper Transformer Oil-free, flame retardant, explosion-proof, zero leakage risk; compact size for small urban underground vaults in Asunción city center, simple daily maintenance.

3. YB Prefabricated Box Substation Integrated unit combining ANDE standard submersible SF6 cabinet + full copper transformer, all-in-one underground distribution solution for residential zones and industrial parks.

Exclusive One-Stop Support for Paraguayan Buyers

1. Full Spanish localized tender documents: Spanish & English bilingual datasheets, type test reports, guaranteed data sheets (PDG), operation manuals fully meeting ANDE bidding file requirements;

2. Heavy-duty fumigated wooden export packaging customized for long ocean shipping to Paraguay ports, moisture and impact resistant for long-term sea transport;

3. 24-hour multilingual sales & technical WhatsApp team, instant response for technical drawing modification, remote parameter debugging; large ANDE national renovation projects support overseas engineer on-site commissioning service;

4. Standard 24-month global warranty consistent with ANDE tender warranty rules, long-term supply of original spare parts at factory cost price;

5. Professional tender technical support: Our engineering team assists clients to fill ANDE PDG guaranteed data forms and provide full technical compliance explanations during bid evaluation.

Available Global Cooperation Modes For Paraguay Partners

1. Exclusive national / regional distributor agent covering all Paraguayan departments, with full price protection and free marketing materials & product samples;

2. Large volume long-term frame supply for ANDE official underground substation tender projects;

3. Customized circuit layout design per ANDE Figure 1–16 wiring schemes, OEM brand logo and cabinet appearance modification;

4. Joint technical solution development for flood-proof underground mining & large-scale solar underground distribution stations.

Contact Our International Sales Team

Request Spanish technical catalog, ANDE compliance test certificates, circuit drawings and formal factory quotation anytime: Company Name: Jiangsu Hualai Electric Technology Co., Ltd. Official Website: https://www.hualaipower.com Business E-mail: hualaipower@gmail.com Round-the-Clock WhatsApp Hotline: +86 18852130008 / +86 18914882008 We sincerely cooperate with all Paraguayan power stakeholders to support ANDE’s nationwide underground grid modernization plan.