Introduction
This series transformers are specially designed for metro and light rail power supply. Adopting a standard 12-pulse rectifier structure with selectable insulation grades, cooling modes and protection ratings, the products feature high safety and stable operating performance for urban rail transit projects around the world.
1. Basic Information
| Items |
Specifications |
| Product Name |
Traction Rectifier Dry-Type Transformer |
| Model |
ZQSC(B)-630～4400 kVA |
| Rated Capacity |
630 kVA ～ 4400 kVA |
| Application |
Urban subway & light rail transit power supply system |
| Loss Execution Standard |
Fully compliant with GB/T 35553-2017 |
| Winding Structure |
Epoxy resin cast dry structure; letter B represents low voltage foil winding |
2. Core Electrical Parameters
| Items |
Specifications |
| Primary Rated Voltage |
10 kV / 20 kV / 35 kV |
| Secondary Rectifier AC Voltage |
930 V / 1050 V |
| Connection Group |
Dyn11, Yd11 (optional) |
| Standard Rectifier Mode |
12-pulse rectifier |
3. Thermal Resistance, Cooling & Protection
| Items |
Specifications |
| Insulation Class |
Standard: Class F; Optional upgraded: Class H |
| Temperature Rise Limit |
Class F: 100K; Class H: 125K |
| Cooling Method |
AN (Natural Air Cooling), AF (Forced Air Cooling) |
| Protection Grade |
Bare transformer: IP00; Fitted with protective enclosure: IP20 / IP23 |
4. Product Features & Qualifications
| Items |
Content |
| Product Advantages |
Low partial discharge, low operating noise, flame retardant and explosion-proof, maintenance-free operation, excellent short-time overload resistance |
| Test & Certification |
Available with official third-party type test reports, satisfying bidding and supply demands of domestic and international rail transit projects |
Standard Application
International & European Standards
IEC 60076-11, EN 50329, IEC 60146, IEC 60529, IEC 61373
North American Standards
IEEE 1653.1-2026, IEEE C57.12.01
Chinese National Standards
JB/T 10693-2022, GB/T 1094.11-2022, GB/T 3859.3, GB 4208
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