81004-286-52-R Allen Bradley Symmetrical Gate Commutated Thyristor (SGCT) Assembly
Specification
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Product Description
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The Allen‑Bradley 81004‑286‑52‑R is a Symmetrical Gate Commutated Thyristor (SGCT) assembly designed as a matched pair of SGCT power modules for use in PowerFlex 7000 medium‑voltage drives from Rockwell Automation. SGCT modules are modern high‑performance thyristor devices that combine the switching characteristics of thyristors with improved control
features that allow bidirectional operation and reduced switching losses. In the 81004‑286‑52‑R configuration, the matched pair is rated for 400 A per module
and is used in the drive’s power conversion stage — where high‑current, high‑voltage switching is required to drive large AC motors in industrial
applications.These SGCT assemblies are typically used in medium‑voltage motor drive applications such as fans, pumps, compressors,
mills, cranes, chillers, and other heavy machinery where precise speed and torque control
over large motors is required.
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| More Technical Data |
| Manufacturer |
Allen‑Bradley / Rockwell Automation |
| Drive Family |
PowerFlex 7000 Medium‑Voltage Drive |
| Part Number |
81004‑286‑52‑R |
| Frequently Asked Questions |
1. What is an SGCT assembly?
An SGCT (Symmetrical Gate Commutated Thyristor) assembly is a power semiconductor module used for high‑current, high‑voltage switching in medium‑voltage drives.
The symmetrical gate allows controlled turn‑on and turn‑off in both directions of current flow — crucial for modern pulse‑width‑modulated drives.
2. Where is the 81004‑286‑52‑R used?
It’s used in PowerFlex 7000 medium‑voltage AC drives as part of the power conversion stage that controls AC motor speed and torque in industrial
applications such as conveyors, compressors, pumps, mills, and large machinery.
3. Why is it a “matched pair”?
The assembly consists of two SGCT modules with closely matched electrical characteristics, ensuring consistent performance and
balanced current sharing in the drive’s power bridge. This helps reduce stress, improve
reliability, and maintain symmetrical operation.
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About Moore
At Moore Automation LIMITED is a leading global supplier of control system components.
We specialize in control systems and drives. With many years of experience in the industrial sector,
we consistently deliver the highest quality of spare parts.We have tens of thousands of spare parts
and spare parts warehouse. Products and services to serve for installing of users control system,
Distributed control systems,programmable controllers,panel controller and drive!
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