Distribution transformer · phase shifting

24-Pulse Phase-Shifting Rectifier Transformer

ZBSS-6300/35 pair

Phase shifting on the HV side cancels large low-order harmonics and their pollution of the grid.

Pulses
24
Unit rating
6300kVA
Voltage
35kV
Technical overview
24-pulse phase-shifting transformer active-part construction photograph
Active-part photograph · 24-pulse phase-shifting transformer

Overview

Oil-immersed phase-shifting rectifier transformers shift phase on the high-voltage side, which basically eliminates large low-order harmonics and reduces their pollution of the grid.

Unlike an ordinary rectifier transformer, a phase-shifting winding is added; phase can be shifted on the HV or LV side in several ways, so design, manufacture and process are considerably more demanding. Units are usually used in sets to produce 18-, 24- or higher-pulse rectification.

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Send the capacity, voltage ratio, vector group, impedance and site conditions. Engineering confirms the design against the approved project specification.