W Series - Automatic Current and Potential Transformer Test

Product catalog summary

Overview: The document provides technical specifications for the Presco AG Automatic Current and Potential Transformer Test Set, Series W. It is designed for testing the ratio error and phase displacement of instrument transformers, offering a broad range of corrections and remote control capabilities via an RS232 interface.

Variants: The test set is available in three variants: WD-ST for both Current Transformers (CT) and Potential Transformers (PT), WI-ST for CT only, and WU-ST for PT only.

Technical Specifications:

Current Transformer Test Part:

Nominal currents: 5, 2, and 1 A
Standard CT nominal current: 5 A
Matching range: 0.5 to 1.6
Working range: 1 to 210% of nominal current
Frequency: 50 and 60 Hz
Measuring range ratio error: ± 20%
Resolution ratio error: 0.001%
Measuring range phase angle: ± 200 crad
Resolution phase angle: 0.001 Min or 10 µrad
Uncertainty of ratio measurement: ± 100 ppm ± 1% of reading
Uncertainty of phase measurement: ± 100 µrad ± 1% of reading
Inherent burden: N-Side < 20mΩ, X-Side 30mΩ/5A, 80 mΩ/2A, 200mΩ/1A
Resolution current measurement: 0.1% / 0.001A
Uncertainty current measurement: ± 1% reading ± 1% of range

Potential Transformer Test Part:

Nominal voltage: 30 to 350 V with factors 1, 1/2, 1/3, 1/√3
Standard PT nominal voltage: 30 to 350 V with factors 1, 1/2, 1/3, 1/√3
Matching range: 0.5 to 1.6
Working range: 1 to 210% of nominal current
Input voltage range: 1 V to 350 V
Frequency: 50 and 60 Hz
Measuring range ratio error: ± 20%
Resolution ratio error: 0.001%
Measuring range phase angle: ± 200 crad
Resolution phase angle: 0.001 Min or 10 µrad
Uncertainty of ratio measurement: ± 100 ppm ± 1% of reading
Uncertainty of phase measurement: ± 100 µrad ± 1% of reading
Inherent burden: 30 kΩ to 110 kΩ
Resolution voltage measurement: 0.1% / 0.01 kV
Uncertainty voltage measurement: ± 1% reading ± 1% of range

Reference Conditions:

Temperature: 23°C ± 2°C
Humidity: 45 to 75%
Air pressure: 101.3 kPa

Rated Range of Use:

Temperature: 5°C to 40°C
Humidity, not condensing: 10 to 90%
Air pressure: 70 to 106 kPa

Physical Specifications:

Dimensions: 449 x 446 x 177 mm (19” x 4U)
Weight: 15 kg
Power mains: 115/230V 50/60Hz 50VA

Catalog excerpts

W Series - Automatic Current and Potential Transformer Test-1

Automatic Current and Potential Transformer Test - Set Series - W Standard version • For testing of ratio error and phase displacement of instrument transformers • Broad range of corrections • Display of the results in all accepted dimensions • Remote control and data transfer via RS232 interface • Variants o WD-ST for CT and PT o WI-ST for CT o WU-ST for PT

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W Series - Automatic Current and Potential Transformer Test-2

Presco ag Technical Specifications Automatic Current and Potential Transformer Testing Instrument Type WD-ST00 Current Transformer test part Nominal currents of the CT to be tested (X) Nominal Current of the standard CT (N) Matching Working range Frequency Measuring range ratio error Resolution ratio error Measuring range phase angle Resolution phase angle Uncertainty of ratio measurement Uncertainty of phase measurement Inherent burden N-Side Inherent burden X-Side Resolution current measurement Uncertainty current measurement Potential Transformer test part Nominal voltage of the PT to be...

Open the catalog to page 2