Why Choose Qianlai Electric’s Wholesale Oil Immersed Transformer?
At Qianlai Electric, we focus on solving the core pain points of bulk purchasers: inconsistent product quality, high procurement costs, and delayed after-sales service. Our wholesale oil immersed transformer stands out in the market with four core competitive advantages:
- Superb Energy Efficiency & Low Operating Cost
Qianlai Electric’s oil immersed transformer adopts premium cold-rolled grain-oriented silicon steel cores and multi-step fully mitered joints, achieving 15%-20% lower no-load loss compared to industry averages. All our wholesale oil immersed transformer models meet IEC 60076 series standards, China’s first-level energy efficiency requirements, and EU CE norms, helping wholesale clients cut long-term electricity bills and gain an edge in project bidding. The optimized magnetic flux density design also minimizes electromagnetic noise, making it suitable for both indoor and outdoor installations.
- Robust Structure & 20+ Year Service Life
Each wholesale oil immersed transformer from Qianlai Electric is built with high-strength oxygen-free copper conductors and a dense insulation system, boasting exceptional short-circuit withstand capability. The fully sealed oil tank undergoes rigorous positive and negative pressure leak testing, equipped with one-piece molded sealing gaskets to eliminate oil leakage risks. With a seven-level thermal control design and high-temperature resistant insulation materials, our transformers ensure a service life of over 30 years with minimal maintenance, reducing replacement costs for bulk buyers.
- Flexible Customization & Large-Scale Bulk Supply
Qianlai Electric supports full customization for wholesale oil immersed transformer orders based on voltage, capacity, frequency, and local grid standards. Our product range covers 100kVA-75,000kVA capacity and 6kV-35kV voltage level, with cooling methods (ONAN/ONAF) and vector groups (YD11, YNd11, Dyn11) fully customizable. Backed by a monthly production capacity of 500 units, we efficiently fulfill large-volume wholesale oil immersed transformer orders, ensuring on-time delivery for critical infrastructure and renewable energy projects.
- Global Certifications & Reliable After-Sales Support
Our wholesale oil immersed transformer has obtained ISO 9001, CE, CCC, and IEC certifications, trusted by clients in “Belt and Road” countries, Southeast Asia, Africa, South America, and Europe. Qianlai Electric provides a 5-year warranty for all bulk oil immersed transformer orders, along with free technical guidance, on-site installation training, and 24/7 online support, eliminating after-sales worries for overseas wholesale partners.
S11 series 10KV wholesale oil immersed transformer main technical Parameter
| model | Rated capacity | Vector group | voltage | No load loss | Load Loss(W) | No load current(%) | Short circuit impedance(%) | ||
| HV | Tapping range | LV | |||||||
| S11-M-30 | 30 | Yyn0 or Dyn11 | 6 6.3 10 10.5 11 | ±2*2.5% or ± 5% | 0.4 | 100 | 630/600 | 1.5 | 4.0 |
| S11-M-50 | 50 | 130 | 910/870 | 1.3 | 4.0 | ||||
| S11-M-63 | 63 | 150 | 1090/1040 | 1.2 | 4.0 | ||||
| S11-M-80 | 80 | 180 | 1310/1250 | 1.2 | 4.0 | ||||
| S11-M-100 | 100 | 200 | 1580/1500 | 1.1 | 4.0 | ||||
| S11-M-125 | 125 | 240 | 1890/1800 | 1.1 | 4.0 | ||||
| S11-M-160 | 160 | 280 | 2310/2200 | 1.0 | 4.0 | ||||
| S11-M-200 | 200 | 340 | 2730/2600 | 1.0 | 4.0 | ||||
| S11-M-250 | 250 | 400 | 3200/3050 | 0.9 | 4.0 | ||||
| S11-M-315 | 315 | 480 | 3830/3650 | 0.9 | 4.0 | ||||
| S11-M-400 | 400 | 570 | 4520/4300 | 0.8 | 4.0 | ||||
| S11-M-500 | 500 | 680 | 5410/5100 | 0.8 | 4.0 | ||||
| S11-M-630 | 630 | 810 | 6200 | 0.6 | 4.5 | ||||
| S11-M-800 | 800 | 980 | 7500 | 0.6 | 4.5 | ||||
| S11-M-1000 | 1000 | 1150 | 10300 | 0.6 | 4.5 | ||||
| S11-M-1250 | 1250 | 1360 | 12000 | 0.5 | 4.5 | ||||
| S11-M-1600 | 1600 | 1640 | 14500 | 0.5 | 4.5 | ||||
| S11-M-2000 | 2000 | 1940 | 18300 | 0.4 | 5.0 | ||||
| S11-M-2500 | 2500 | 2290 | 21200 | 0.4 | 5.0 | ||||
Qianlai Electric’s Wholesale Oil Immersed Transformer Workshop
FAQ About Qianlai Electric’s Wholesale Oil Immersed Transformer
Q1: What is the lead time for Qianlai Electric’s wholesale oil immersed transformer orders?
A: For standard oil immersed transformer models, the lead time is 15-20 working days for orders of 1-10 sets. For large-volume wholesale orders (≥50 sets) or customized models, the lead time is 30-45 working days, depending on production scheduling. Qianlai Electric prioritizes on-time delivery to avoid project delays for clients.
Q2: Can Qianlai Electric provide OEM/ODM service for wholesale oil immersed transformer orders?
A: Yes. We offer full OEM/ODM service for wholesale oil immersed transformer, including customizing logos, colors, packaging, and technical parameters according to your brand requirements. We also provide detailed technical documents and datasheets to support your marketing efforts.
Q3: How does Qianlai Electric ensure the quality of bulk wholesale oil immersed transformer orders?
A: Each oil immersed transformer undergoes strict quality control at every stage: raw material inspection (copper, silicon steel, insulation materials), semi-finished product testing, and final performance testing (loss test, insulation test, short-circuit test). We provide test reports for each batch of wholesale orders and welcome third-party inspection institutions to supervise production.
Q4: What are the payment terms for wholesale oil immersed transformer orders?
A: For new wholesale clients, we accept T/T (30% deposit in advance, 70% balance before delivery). For long-term partners, Qianlai Electric offers flexible payment terms such as L/C or monthly settlement to reduce your capital pressure.
