Key facts
- Manuals
- 5
- Languages
- EN
- Last added
- 2012-03-16
Featured TRENCH manuals
TRENCH Medium Voltage Transformers Product Catalog
This catalog presents TRENCH’s epoxy‑resin current and voltage transformers designed for 10 kV or less power systems. It lists the various series (LZZB8, LDZB, LMZ, JDZ, JDZX) together with their structural types, typical applications, and key performance features such as high insulation quality and accurate metering.
Technical data tables give rated insulation levels, current ratios, accuracy classes, output VA ratings and frequency options. The document also notes compliance with Chinese national standards GB1208/GB1207 and IEC 44‑1/IEC 44‑2.
Covers: Introduction · Current Transformers · Voltage Transformers · Types and Structures · Features · Technical Data Table
Trench Reactors Product Leaflet
Trench is a world leader in the design and manufacture of air‑core, dry‑type power reactors for utility and industrial use. The brochure outlines the design features, such as epoxy‑impregnated fiberglass construction, zero radial voltage stress, and a service life exceeding 30 years, as well as compliance with ANSV/IEEE and IEC standards.
The document details a wide range of reactor types—series, buffer, filter, shunt, thyristor‑controlled, smoothing, and specialty iron‑core or oil‑type reactors—along with typical applications like fault‑current reduction, load balancing, harmonic filtering, and HVDC smoothing. Ordering data, enclosure options, and pedestal designs are also provided.
Covers: Introduction · Design Features of Air‑Core Dry Type Reactors · Reactor Applications · Series Reactors · Buffer Reactors · Filter Reactors
Trench Line Traps Product Leaflet
Trench is a world leader in air‑core dry‑type inductors for electric utility applications. Their Line Traps are used in Power Line Carrier (PLC) communication systems to provide high impedance at carrier frequencies while allowing normal power‑frequency operation.
The product line includes two winding technologies (E‑design and O‑design), several tuning options (single‑frequency, double‑frequency, wideband, self‑tuned), metal‑oxide surge arresters for protection, and multiple mounting configurations such as suspension and pedestal mounts. Detailed ratings for continuous current, short‑time current, and inductance are provided for both IEC 353 and ANSI C93.3 standards.
Covers: Introduction · Basic Function of Line Traps · Design and Construction · Main Coil · Tuning Device · Protective Device
Trench Type OTA Oil Impregnated Paper Bushings Product Leaflet
Trench High Voltage Products Ltd., a member of the Trench group, manufactures oil‑impregnated paper (OIP) and epoxy‑resin impregnated paper (ERIP) bushings for transmission and distribution applications. The Type OTA series covers a wide voltage range and is designed to meet IEC and ANSI standards, offering reliable performance for both outdoor and indoor transformer installations.
Key features include impulse testing up to 3.2 MV, optional current‑transformer extensions, magnetic oil‑level indicators for units above 245 kV, and the ability to install the bushing up to 30° from vertical. Optional extras such as air‑end corona shields and special porcelain designs are available for higher voltage ranges.
Covers: Group Bushing Facilities · Facilities Include · Transformer Bushings · Switchgear Bushings · Features · Optional Extras
Latest TRENCH manuals
TRENCH Medium Voltage Transformers Product Catalog
Product Leaflet 160 pages · 9.2 MB · ENThe TRENCH Medium Voltage Transformers catalog provides specifications, series options, and usage information for epoxy‑resin current and voltage…
Trench Reactors Product Leaflet
Product Leaflet 16 pages · 1.4 MB · ENA brochure describing Trench air‑core, dry‑type and specialty power reactors, their features, applications and ordering information.
Trench Line Traps Product Leaflet
Product Leaflet 12 pages · 496 KB · ENTrench Line Traps are air‑core dry‑type inductors for PLC communication, with detailed specifications, designs, and mounting options.
Trench Type OTA Oil Impregnated Paper Bushings Product Leaflet
Product Leaflet 4 pages · 1.2 MB · ENTrench Type OTA oil impregnated paper bushings are high‑voltage condenser bushings rated from 72.5 kV to 1100 kV, up to 5 000 A, with optional accessories.
Trench Oil Impregnated Paper Bushings Product Leaflet
Product Leaflet 4 pages · 1.2 MB · ENTrench’s Oil Impregnated Paper Bushings product leaflet provides specifications, voltage ranges, and optional features for high‑voltage transformer…
Questions answered in TRENCH manuals
What are common applications of series reactors?
Series reactors are used for fault‑current reduction, load balancing in parallel circuits, and limiting inrush currents of capacitor banks.
What is the design service life of Trench reactors?
The reactors are designed for a service life exceeding 30 years.
What is the main function of a line trap?
It presents a high impedance at the carrier frequency band while introducing negligible impedance at the power frequency.
What tuning types are available for Trench line traps?
Trench offers single‑frequency, double‑frequency, wideband, and self‑tuned tuning options.
What voltage range do the Type OTA bushings cover?
The Type OTA bushings are rated from 72.5 kV up to 1100 kV.
From: Trench Type OTA Oil Impregnated Paper Bushings Product Leaflet
What is the maximum current rating of these bushings?
They can carry up to 5 000 A.
From: Trench Type OTA Oil Impregnated Paper Bushings Product Leaflet