Isolation Transformer India
About isolation transformer india
Where to Find Isolation Transformer Suppliers for the Indian Market?
China remains a dominant source for electrical transformers, with key manufacturing clusters in Henan, Zhejiang, and Guangdong provinces supplying cost-competitive isolation transformers tailored for international markets including India. These regions host vertically integrated production facilities specializing in dry-type, single-phase, and three-phase isolation transformers ranging from 200VA to 500KVA capacities. Proximity to raw material suppliers—particularly copper, silicon steel, and insulating epoxy—enables competitive pricing, with unit costs starting as low as $7.90 for small-capacity models.
Suppliers leverage standardized production lines for common configurations (e.g., 220V/380V input, toroidal or laminated core designs) while maintaining flexibility for voltage customization and insulation class upgrades. The ecosystem supports rapid prototyping and scalable batch production, with average lead times of 15–30 days for standard orders. Localization of winding, varnishing, and enclosure assembly processes reduces dependency on external components, enhancing delivery reliability for export buyers.
How to Evaluate Isolation Transformer Suppliers?
Procurement decisions should be guided by technical validation, production transparency, and transactional reliability:
Technical Specifications & Compliance
Confirm adherence to IEC 61558 and IS 2026 (Indian Standard for power transformers) where applicable. Key design parameters include insulation class (typically Class A or F), core material (copper windings preferred for efficiency), and cooling method (dry-type being standard). Request test reports for dielectric strength, temperature rise, and no-load losses to validate performance claims. CE marking is frequently cited; however, independent verification of compliance documentation is recommended for regulatory alignment in India.
Production and Customization Capability
Assess supplier capacity through available metrics:
- Range of KVA ratings offered (from 500VA to over 600KVA)
- Availability of single-phase and three-phase configurations
- In-house engineering support for custom voltages, enclosures, or mounting specifications
Suppliers such as Henan New Electric Power Co., Ltd. and T-SUPPLY INTERNATIONAL CO., LTD. list extensive product portfolios indicating mature design libraries and modular manufacturing systems.
Quality Assurance and Delivery Performance
Prioritize suppliers with verified on-time delivery rates exceeding 95%. Multiple suppliers in the dataset report 100% on-time fulfillment, suggesting robust logistics coordination. Cross-reference response times (all listed suppliers respond within one hour) with reorder rates—a proxy for post-sale satisfaction. While some suppliers report reorder rates below 15%, top performers exceed 28%, indicating stronger customer retention. Factory audits via video tours can verify winding automation, quality inspection stations, and packaging standards.
What Are the Leading Isolation Transformer Suppliers?
| Company Name | Product Range (KVA) | Min. Order Quantity | Price Range (USD) | On-Time Delivery | Response Time | Reorder Rate | Customization Options | Online Revenue |
|---|---|---|---|---|---|---|---|---|
| Henan New Electric Power Co., Ltd. | 0.2–10 KVA | 1–10 sets | $7.90–$999 | 100% | ≤1h | 28% | Voltage, phase, core type, labeling, packaging | US $400,000+ |
| Zhejiang Kaiyi Electric Co., Ltd. | 1–15 KVA | 5–10 sets | $59.99–$450 | 100% | ≤1h | 21% | Limited (focused on stabilizers) | US $30,000+ |
| Dongguan Kunmai Power Supply Co., Ltd. | 0.5–500 KVA | 1–2 pieces | $14–$14,000 | 75% | ≤1h | <15% | Three-phase, control transformer variants | US $7,000+ |
| Anhui Pinkong Energy Technology Co., Ltd. | 30–630 KVA | 1–5 boxes | $180–$1,450 | 98% | ≤1h | <15% | Logo, label, packaging | US $150,000+ |
| T-SUPPLY INTERNATIONAL CO., LTD. | 3–30 KVA | 1 set | $50–$4,200 | 100% | ≤1h | <15% | Broad (231 transformer listings) | US $3,000+ |
Performance Analysis
Henan New Electric Power Co., Ltd. stands out with the highest reorder rate (28%) and broadest customization scope, supported by significant online revenue. Despite Dongguan Kunmai’s wide KVA range, its 75% on-time delivery rate presents a supply chain risk. Anhui Pinkong and Zhejiang Kaiyi demonstrate strong logistical performance (98–100% on-time delivery) and mid-tier customization, making them viable for bulk industrial procurement. T-SUPPLY INTERNATIONAL offers high flexibility with no minimum order restriction on certain listings, advantageous for pilot testing or niche applications.
FAQs
What certifications should isolation transformers have for use in India?
While not always mandatory, compliance with IEC 61558 and IS 2026 ensures technical compatibility. CE or CB Scheme certification facilitates customs clearance. Buyers should request factory test certificates (routine tests: turns ratio, insulation resistance, hi-pot).
What is the typical MOQ for isolation transformers?
MOQs vary from 1 set (for high-value units) to 5–10 sets for entry-level models. Some suppliers offer single-unit sampling at premium pricing. Bulk discounts typically apply beyond 10 units.
Can suppliers customize input/output voltages?
Yes, most suppliers support custom voltage configurations (e.g., 380V to 220V, 24V control circuits). Engineering feasibility depends on core design and insulation rating—confirm compatibility before ordering.
What are common lead times?
Standard orders take 10–20 days for production. Custom designs may require 25–35 days. Air freight adds 5–7 days for Indian destinations; sea freight ranges from 20–35 days depending on port of discharge.
Are samples available before bulk purchase?
Sample availability depends on supplier policy. Units priced under $100 are often available as paid samples. For higher-capacity models, expect sample fees equivalent to 1.5x retail price, partially offsettable against future orders.
