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086-627
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The Voltech Handbook of Transformer Testing

Description
This article covers a wide range of transformer theory and Voltech's testing capability.
The Voltech Handbook of Transformer Testing
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Expand 1 Transformer Basics1 Transformer Basics
Collapse 2 Available Tests2 Available Tests
2.1 CTY - Continuity
2.2 R - Winding Resistance
2.3 RLS or RLP - Equivalent Series or Parallel R
2.4 LS_LP - Primary Inductance
2.5 LSB_LPB - Inductance With Bias Current
2.6 QL - Q factor
2.7 D - Dissipation Factor
2.8 LL - Leakage Inductance
2.9 C - Inter-winding Capacitance
2.10 TR - Turns Ratio and Phasing
2.11 TRL - Turns Ratio by Inductance
2.12 Z_ZB - Impedance_Impedance with Bias
2.13 R2 - DC Resistance Match
2.14 L2 - Inductance Match
2.15 C2 - Capacitance Match
2.16 GBAL - General Longitudinal Balance
2.17 LBAL - Longitudinal Balance
2.18 ILOS - Insertion Loss
2.19 RESP - Frequency Response
2.20 RLOS - Return Loss
2.21 ANGL - Impedance Phase Angle
2.22 PHAS - Inter-winding Phase Test
2.23 TRIM - Trimming Adjustment
2.24 OUT - Output To User Port
2.25 IR - Insulation Resistance
2.26 HPDC - DC HI-POT
2.27 HPAC - AC HI-POT
2.28 SURG - Surge Stress Test
2.29 STRW - Stress Watts
2.30 MAGI - Magnetizing Current
2.31 VOC - Open Circuit Voltage
2.32 WATX - Wattage (External Source)
2.33 STRX - Stress Watts (External Source)
2.34 MAGX - Magnetizing Current (Ext. Source)
2.35 VOCX - O.C. Voltage (External Source)
2.36 LVOC - Low Voltage Open Circuit
2.37 ILK - Leakage Current
2.38 LSBX - Inductance with External Bias (Series)
2.39 LPBX - Inductance with External Bias (Parallel)
2.40 ZBX - Impedance with External Bias
2.41 ACRT - AC HI-POT Ramp
2.42 DCAT - DC HI-POT Ramp
2.43 ACVB - AC Voltage Break Down
2.44 DCVB - DC Voltage Break Down
2.45 WATT - Wattage
2.0 Available Tests On The AT Series
Expand 3 Examples of Different Transformer Types3 Examples of Different Transformer Types

2.40 ZBX - Impedance with External Bias

This test requires the use of one or more Voltech DC1000 Precision DC Bias Current Sources.

Contact your Voltech sales office for details.

The Winding Impedance with External Bias test measures the impedance of a selected winding while applying a DC current from the DC1000 through the winding.

An AC voltage is also applied across the winding from the AT.

This test can be used with inductors to measure the change in impedance with a bias current.


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