Gas-insulated Instrument Transformers 72-300kV [TAG, TVG, AVG]

Product catalog summary

Overview: The document provides detailed information on SF6 insulated instrument transformers designed for outdoor installation, covering voltage ranges from 72.5 kV to 300 kV. It includes current, voltage, and combined measuring transformers.

Characteristics:

Designed for outdoor installation with SF6 and SF6-ppr insulation.
Constructed with cast aluminum housings and conform to international standards for pressurized enclosures.
Features include head type design, explosion-proof, and maintenance-free operation.

Reliable Design:

Proven SF6 insulation technology with earthquake resistance.
Utilizes computer technology and finite element analysis for studying electric fields, mechanical stresses, and seismic phenomena.
Quality system compliant with ISO 9001.

Advantages:

High operational reliability and safety.
Equipped with a pressure relief device and remote supervision of insulation condition via internal gas density monitoring.
No aging issues.

Special Options: Composite grey insulator available upon request, with the standard being porcelain brown.

Technical Specifications:

Primary current up to 4000 A and thermal current up to 63 kA for 1 second.
Number of cores ranges from 1 to 4.
Metering accuracy classes: 0.2, 0.5, 1.
Protection accuracy classes for current transformers: 5P, 10P, TPY, TPX, TPZ; for voltage transformers: 3P, 6P.

Test Voltages and Dimensions: Detailed specifications for various models (TAG, TVG, AVG) are provided, including highest system voltage, test voltages, and overall dimensions.

Contact Information: The document lists contact details for Trench Group's offices in Italy, Austria, Brazil, Canada, France, Germany, and Switzerland.

Catalog excerpts

Instrument Transformers

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Full Range of SF6 Insulated Instrument Transformer covering: □ Cast aluminium housings □ Conformity to the main international standards for design, test and construction of pressurised enclosures □ Head type design Reliable design: □ Well proven experience with sf6 insulation technology □ Dimensioned to withstand phase-to-earth voltage at atmospheric internal gas pressure □ Computer technology and finite elements analysis to study electric field, mechanical stresses and seismic □ Quality system complying with iso 9001 □ Operation reliability, operation safety □ Pressure relief device □ Remote...

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Gas-insulated Instrument Transformers 72-300kV [TAG, TVG, AVG]-3

Measuring Transformer LIWL= rated lightning impulse voltage SIWL = rated switching impulse voltage Electrical Characteristics for all type of current transformers: metering accuracy class: 0.2 - 0.5 -1 □ primary current up to 4000 A protection accuracy class: □ thermal current up to 63 kA for 1 s □ 5P -10P - TPY - TPX - TPZ for current transfomer □ n° of cores from 1 to 4 □ 3P - 6P for voltage transformer

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Gas-insulated Instrument Transformers 72-300kV [TAG, TVG, AVG]-4

17014 Bragno-Cairo Montenotte (SV) - Italy E-Mail [email protected] □ Trench Austria GmbH E-Mail [email protected] □ Trench Brasil LTDA E-Mail [email protected] Coil Product Division Scarborough, Ontario E-Mail [email protected] Instrument Transformer Division E-Mail [email protected] E-Mail [email protected] □ Trench Germany GmbH. E-Mail [email protected] E-Mail [email protected] Data and characterises indicated in this publication may be varied without notice

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