ZQSCB traction rectifier transformer series

The manufacturer describes the series as linking grid AC to the traction DC supply through rectification. The reviewed product table specifies a dry-type transformer. It does not define a complete rectifier supply scope, DC current rating, traction voltage guarantee or substation protection package. Identify who supplies the rectifier, transformer, controls and integration tests.

The page lists connection groups Dy11d0, Dy1d2 (±7.5°), Dy5d0 and Dy7d2 (±7.5°). These are published options rather than a universal connection. Ask the system designer and maker to agree the winding arrangement and phase displacement required by the selected pulse scheme. Do not assign a connection to a pulse count from this family list alone.

Scroll this table to read every column →

Source notes: [P1]

Provide the rectifier supplier’s input requirements, single-line diagram and traction duty profile. Ask the transformer maker to confirm the corresponding winding ratings, current waveform assumptions, overload cycle, thermal limits and cooling arrangement. The family capacity ceiling does not define a usable DC traction power for every voltage or pulse configuration.

The overview claims low losses, low partial discharge and resistance to short-circuit and grid impacts, without selected-unit numerical results. Request guaranteed losses and reference temperature, harmonic-duty assumptions, temperature-rise evidence and the short-circuit requirements agreed for the project. General claims should not stand in for the traction-system acceptance schedule.

1. Agree the interfaces

   Match the rectifier input, transformer secondary connections and phase scheme on approved diagrams.

2. Agree service conditions

   Provide traction load cycles, room environment and cooling restrictions; obtain an explicit duty guarantee.

3. Agree coordinated acceptance

   Separate transformer factory tests from rectifier and integrated-system tests, assigning responsibility for each.

Source notes: [P1]

The table maps 10 kV to LI75AC35/AC3, 20 kV to LI125AC50/AC3 and 35 kV to LI170AC70/AC3. Keep that mapping visible and ask for the complete winding-specific dielectric schedule on the returned rating sheet. F- and H-class insulation are listed as family choices; the proposed unit needs one defined insulation system and temperature-rise limit.

Indoor installation is the stated operating setting. Obtain enclosure, ventilation, terminal layout, service clearances, controller and alarm requirements for the chosen unit. The source names JB/T10693-2007 and GB/T1094.11-2022; those listed references are not a certificate or a complete determination of project compliance. Request the applicable requirement list and report scope for the ordered design.

Source notes: [P1]

Ask the quotation to identify whether the supply is a transformer alone, a coordinated transformer-and-rectifier package or a broader station package. Specify terminals, buses/cables, temperature monitoring, enclosure, cooling, packing, installation support and integrated commissioning. A price for a general distribution transformer cannot establish a comparable price for this traction duty.

No verified price or lead time is available for the selected arrangement. Request currency, trade terms, dated validity and exclusions, then separate drawing/interface approval, manufacturing, factory tests, rectifier integration, shipment and site acceptance. State the event starting lead time and the destination; factory completion is not the same milestone as a commissioned traction supply.

Source notes: [P1]

Provide the traction single-line diagram and rectifier input requirements.

0 of 6 items prepared

Copy and complete this RFQ

Replace the brackets with your project information. This preparation tool stays in your browser; it does not submit an enquiry.

Manufacturer material reviewed on 14 October 2026. Published facts and buyer recommendations are distinguished in the sections above. No verified current price, lead time or independent unit test was established.

Source references and archived material are retained in the editorial record. Report a correction or provide a current datasheet →