ED2W / ED1W / ED2I / ED1P — smoothing, interphase and air-core reactors for DC and AC
Country: Poland · Model: ED2W / ED1W / ED2I / ED1P
Reactors for DC power electronics for rated current up to 10 000 A. The group includes the smoothing ED2W and ED1W, the interphase ED2I and the air-core ED1P. They are installed in rectifiers, traction systems, electrolysers and load test benches.
- ED2W / ED1W (smoothing)
- ripple frequency 300 Hz, ripple ≤ 10 %, up to 750 V (230 V standard), 110 % In
- ED1W example
- 15 mH/30 A … 0.5 mH/500 A, 11–122 kg
- ED2I (interphase)
- for parallel rectifier bridges, up to 750 V
- Air-core
- DC traction (example ED1PH 4.0 mH, 1 700 A, 3 300 V DC) and AC (ED1P)
Technical specifications
| ED2W / ED1W (smoothing) | ripple frequency 300 Hz, ripple ≤ 10 %, up to 750 V (230 V standard), 110 % In |
|---|---|
| ED1W example | 15 mH/30 A … 0.5 mH/500 A, 11–122 kg |
| ED2I (interphase) | for parallel rectifier bridges, up to 750 V |
| Air-core | DC traction (example ED1PH 4.0 mH, 1 700 A, 3 300 V DC) and AC (ED1P) |
| Rated current | DC reactors up to 10 000 A (per catalogue) |
| Insulation class | F (155 °C) |
| Standards | EN/IEC 61558-2-20, EN/IEC 60076-6 |
Replacement for
FROS smoothing reactors, rectifier equalising reactors (general type)
selected by purpose and main parameters, please confirm with the manager
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The smoothing reactors ED2W and the single-phase ED1W work in DC-DC converters and in schemes with diode or thyristor rectifiers of 6 and 12 pulses. They suppress the ripple of the rectified current and stabilize the energy flow, and together with capacitors form LC filters. The standard ripple frequency is 300 Hz, the ripple share up to 10 %, the working voltage up to 750 V (230 V standard), overload 110 % In. A typical ED1W ranges from 15 mH/30 A (14.2 kg) to 0.5 mH/500 A and 5 mH/200 A (122 kg). The interphase ED2I equalize the currents of parallel bridges when the output voltages are asymmetrical, and protect the semiconductors, including in substation traction rectifiers. Air-core reactors do not saturate and keep constant inductance over the whole current range. Traction DC reactors are mounted under the floor or on the roof of rolling stock, protected from moisture by special insulation, non-combustible materials and repeated VPI impregnation. The insulation class is F, IP00. Compliance with EN/IEC 61558-2-20 and EN/IEC 60076-6.
How to choose
The scheme determines the type. If ripple behind a rectifier must be smoothed, take the ED2W or ED1W, and for parallel operation of bridges the ED2I. Laboratories and test benches will be served by air-core AC reactors ED1P, which do not saturate. For rolling stock there are traction air-core DC reactors, for example the ED1PH 4.0 mH for 1 700 A and 3 300 V DC. Inductance and current are specified for the task, so the customer needs to know the DC current, the ripple or switching frequency and the amplitude of the AC component.
Request a price and lead time
ED2W / ED1W / ED2I / ED1P — smoothing, interphase and air-core reactors for DC and AC. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the ED2W smoothing reactor needed for?
It smooths the ripple of the rectified current in schemes with diode or thyristor rectifiers and in DC-DC converters. The standard ripple frequency is 300 Hz, the ripple share up to 10 %.
What range does a typical ED1W reactor have?
From 15 mH at 30 A (14.2 kg) to 0.5 mH at 500 A and 5 mH at 200 A (122 kg).
What does the ED2I interphase reactor do?
It equalizes currents between parallel rectifier bridges when output voltages are asymmetrical and protects the semiconductors from overload. Working voltage is up to 750 V.
Why do air-core reactors not saturate?
They have no ferromagnetic core, so inductance practically does not change over the whole current range. Traction DC versions are made for current up to 10 000 A per the catalogue.
What data must be provided to order a reactor for a pulse converter?
The rated DC current, the switching frequency and the amplitude of the AC component. From these data the inductance and design are selected.
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Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.