Automatic instrument transformer test set - Haefely Test AG - #1

Automatic Instrument Transformer Test Set

■ For remote-controlled measurement - IEEE 488 interface

■ Wide range of accessories (see order specification)

The type 2767 automatic current and voltage transformer test set marketed by TETTEX INSTRUMENTS is a modern, fully automatic instrument for fast, accurate measurement of instrument transformer errors. It is designed for use in laboratories, manufacturing processes, quality control proce­dures and official metrology stations. Present increasingly severe quality control requirements call for a higher degree of operating comfort and absolute reliability of the measuring equipment employed. Based on the latest design technology this instrument sets new standards of quality, reliability, convenient operation and simple maintenance. Its measurement ranges for current/voltage errors, phase displacement and current/ voltage excitation are fully up to international standard requirements.

This measuring instrument has been tested by PTB (Physical Technical Federal Authority) in Germany. It fulfills all require­ments according to the PTB testrules for measuring instrument transformers and is approved for calibration.

■ Current and voltage transformer measurements with a single instrument.

■ Fully automatic measurement and digital display of current/voltage ratio errors, phase displacement, test current and voltage.

■ Measurements are possible on instrument transformers of practically any primary and secondary current and voltage ratings.

■ Test and standard transformers may have different ratios.

■ A cost-effective solution:

■ different transformers can be tested using one single standard transformer.

■ different standard and test transformer ratios are matched without use of an external divider.

■ Interactive parameter entry simplifies operation.

■ A microprocessor monitors all entries and controls the measurement run.

■ Plain-language display of error messages on a 2 x 16 character dot-matrix.

■ Short measurement times.

■ Dynamic averaging.

■ High accuracy.

■ Low inherent burden.

■ Connection for external printer (RS 232C interface).

■ Front-panel with modern keyboard (piezocrystal elements).

■ Specifications conform to the standards/ recommendations of IEC 60044-1, IEC 60044-2; IEC 60044­3; IEC 60044-7,

ANSI/IEEE C57.13-1978 and VDE 0414, part 2 .

■ Including RS 232C interface for computer connection

TETTEX INSTRUMENTS also designs and supplies computer controlled current and voltage transformer measurement facilities for specific customer requirements, comprising the following:

■ Type 2767 combined test set for current and voltage instrument transformers.

■ Series 4760 standard current transformer (current comparator).

■ Type 2763 is a test set for current instrument transformers only

■ Type 2769 is a test set for voltage instrument transformers only

■ Series 4820 standard voltage instrument transformer or series 4860 electronic standard voltage divider with high-voltage capacitive divider.

■ Type 3691 or 3695 programmable electronic burden or series 3600 passive burdens

■ In addition, TETTEX INSTRUMENTS can supply all necessary peripherals (e.g. computer and printer) for external control and data recovery.

a brand of

Haefely is a subsidiary of Hubbell Incorporated.