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Reactors

Product catalog summary

Introduction
Trench is a prominent manufacturer of air core, dry type power reactors, with over 40 years of experience. Their reactors are custom-designed for utility and industrial applications, adhering to ISO 9001 quality standards. The range includes small current limiting reactors to complex EHV reactors exceeding 300 MVA per coil.

Design Features
Trench reactors are constructed with epoxy impregnated, fiberglass encapsulated materials, aluminum components, and welded connections. They are known for high mechanical strength, low noise, weatherproof construction, and a service life of over 30 years, complying with ANSI/IEEE, IEC, and other standards.

Reactor Applications

Current Limiting Reactors: Protect equipment by reducing short circuit current.
Capacitor Reactors: Limit inrush currents and control resonant frequency with capacitor banks.
Buffer Reactors: Stabilize the arc in Electric Arc Furnaces.
Duplex Reactors: Offer low reactance under normal conditions and high reactance under fault conditions.
Load Flow Control Reactors: Manage load flow on transmission lines up to 800 kV.
Filter Reactors: Form harmonic filter circuits with capacitor banks.

Additional Reactor Types
Static VAR Compensators: Enhance transmission system reliability and correct voltage fluctuations.
Shunt Reactors: Compensate for capacitive VARs in lightly loaded transmission lines.
HVDC-Reactors: Used in HVDC lines for long-distance power transmission.
Test Lab Reactors: Used in high voltage and power test labs.
Neutral Grounding Reactors: Limit line-to-ground fault current in earth fault protection systems.

Construction and Installation
Trench reactors are built with parallel connected, insulated aluminum conductors, reinforced with epoxy resin impregnated fiberglass. They are designed to withstand severe short circuit conditions and can be installed in various climates. Installation can be side by side or vertically stacked, with detailed instructions provided.

Testing and Loss Management
Each reactor undergoes rigorous testing to ensure reliability. Design tests and material testing verify performance over the reactor's service life. Trench optimizes material use to control losses, balancing initial cost and operating losses.

Specifications and Design
Enclosures and support pedestals are designed for air core, dry type reactors. Enclosures are made from steel or fiberglass, suitable for indoor or outdoor installations, and are designed to minimize circulating current loops. Pedestals ensure personnel safety and proper magnetic clearance.

Sound Management
Sound shields are available for special applications to reduce noise levels, particularly in HVDC applications.

Order Requirements
Specific data required for orders includes reactor application, installation type, system voltage, current ratings, short circuit levels, inductance, mounting arrangements, accessory requirements, installation location, and ambient temperature range.

Contact Information
Contact details for Trench offices in Austria, Brazil, China, France, Germany, Italy, Canada, Switzerland, and the UK are provided, including phone numbers, fax numbers, and email addresses.

Catalog excerpts

Neutral Grounding Reactors Neutral Grounding Reactors limit the line to ground fault currenl to specified levels. Spcification should also include unbalanced condition continuous current and duration. Arc Suppression Coils Single-phase neutral grounding (earthing) reactors (arc suppression coils) are intended tocompensate for the capacitive line-to-g round current during to a single phase ground-fault. The arc suppression coil (ASC) represents the central l驩ment of the ench earth fault protection System. Since the electhc System is subject lo changes, the inductance of the ASC used for neutral...

Open the catalog to page 10

Construction TRENCH A Trench air core dry type reactor consiste of a number of parallel connected, indrvidualty insulated. aluminum (copperon request) conductors. Thse conductors can be small wire or proprietary cables custom designed andmanufactured. The size and type of conductor used m each reactor is dpendant on the reactor sp詩cification. The various styles and sizes of conductors available ensure optimum performance at the most economical cost. The windings are mechanically reinforced with epoxy resin impregnated fibreglass, which after a carefully defined oven cure cyde produces an encapsulated...

Open the catalog to page 11

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Catalog excerpts

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