Traction Rectifier Dry-Type Transformers

Attributes Description Documentation Resource Library

Key attributes

Brand	ROCKWILL
Model NO.	Traction Rectifier Dry-Type Transformers
Rated voltage	20kV
Rated frequency	50/60Hz
Series	ZQSC(B)

Description

Introduction

This series transformers are specially designed for metro and light rail power supply. All loss indicators comply with GB/T 35553-2017. 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

Traction Rectifier Dry-Type Transformers

Negotiable

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Model

ZQSC(B)-4400

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