Voltech logo
    • Login
  • Welcome
  • Applications
  • Products
  • Support
  • Contact Us
Voltech logo
  • Welcome
  • Applications
  • Products
  • Support
  • Contact Us
Contact Voltech
USA 1-239-437-0494
EUR 44 1235 861173
ASIA 44-1235-364-001
or
Email Voltech
Voltech on LinkedIn Voltech on YouTube Voltech on Twitter
    • Login
Technical Document Reader
Document
098-024
Name

AT3600 User Manual

Description
The full user manual for the AT3600 transformer tester.
AT3600 User Manual
Back
to Index
Skip Navigation Links.
Expand 1 Introduction1 Introduction
Expand 2 Getting Started2 Getting Started
Expand 3 Test Program Editor3 Test Program Editor
Expand 4 Using the Server4 Using the Server
Expand 5 Fixtures5 Fixtures
Expand 6 Front Panel Operation6 Front Panel Operation
Collapse 7 Tests and Test Conditions7 Tests and Test Conditions
Collapse 7.1 Transformer Tests7.1 Transformer Tests
7.1.1 Application Of Tests
7.1.2 Continuity
7.1.3 Winding Resistance
7.1.4 Equivalent Resistance
7.1.5 Inductance
7.1.6 Inductance With Bias Current
7.1.7 Quality Factor
7.1.8 Dissipation Factor
7.1.9 Leakage Inductance
7.1.10 Inter-Winding Capacitance
7.1.11 Turns Ratio
7.1.12 Turns Ratio By Inductance
7.1.13 Impedance - Impedance With Bias
7.1.14 Dc Resistance Match
7.1.15 Inductance Match
7.1.16 Capacitance Match
7.1.17 General Longitudinal Balance
7.1.18 Longitudinal Balance
7.1.19 Insertion Loss
7.1.20 Frequency Response
7.1.21 Return Loss
7.1.22 Impedance Phase Angle
7.1.23 Inter-Winding Phase
7.1.24 Trimming Adjustment
7.1.25 Output To User Port
7.1.26 Insulation Resistance
7.1.27 Hi Pot (DC)
7.1.28 Hi Pot (AC)
7.1.29 Surge Stress Test
7.1.30 Wattage
7.1.31 Wattage (External Source)
7.1.32 Stress Wattage
7.1.33 Stress Wattage (External Source)
7.1.34 Magnetizing Current
7.1.35 Magnetizing Current (External Source)
7.1.36 Open Circuit Voltage
7.1.37 Open Circuit Voltage (External Source)
7.1.38 Low Voltage Open Circuit
7.1.39 Leakage Current
7.1.40 Inductance With Ext Bias (Series Circuit)
7.1.41 Inductance With Ext Bias (Parallel Circuit)
7.1.42 Impedance With External Bias
7.1.43 Hi Pot Ramp (AC)
7.1.44 Hi Pot Ramp (DC)
7.1.45 Voltage Break Down (AC)
7.1.46 Voltage Break Down (DC)
Expand 8 Specification8 Specification
Expand 9 Warranty and Service9 Warranty and Service
Expand 10 Safety Systems10 Safety Systems

7.1.34 MAGI - Magnetizing Current

WHERE USED

The AT3600 offers two basic alternative ways to confirm that the transformer has been assembled properly, with the appropriate number of primary and secondary turns, the right grade of magnetic material for the core, and the correct air gap if required.

Magnetising current and open circuit voltage are the preferred tests for line frequency transformers, designed to operate over the full extent of the B-H curve, including the non-linear regions.

(For other transformers, such as pulse transformers and those used in switched mode power supplies, inductance and turns ratio are the preferred tests.)

MEASUREMENT CONDITIONS

When measuring magnetising current, you should normally program the test to apply the highest working voltage at the lowest working frequency to the primary winding.

In the case of a transformer with a split primary, the test can be conducted equally well by energising just one of the primary windings, as opposed to the two in series. The expected current will be greater for the single winding, rising in proportion to the turns ratio:

IA = IAB x (NAB / NA)

where
IA = The current to be specified when testing with winding A
IAB = The current for windings A and B in series
NA = The number of turns on winding A
NAB = The number of turns on A and B in series

(As an alternative, the formula above can be written using the voltage ratio between the two windings, rather than the turns ratio.)

In principle, you may measure the magnetising current using any winding, or any series combination of windings, with the current limit adjusted according to the formula above, because the Ampere-turns required to magnetise a transformer to a given flux level is independent of which winding is used.

In practice, the magnetising current waveform may have a transient component following the switch-on of the test voltage. To give you repeatable accurate results, the measurement does not start until any transient has settled. In addition, to give you the quickest test execution time, the AT3600 uses a switch-on sequence which minimises such transient effects.

SPECIFYING THE TEST LIMITS

The AT3600 offers you two ways to specify the test limits:
Using a true rms measurement
Using a mean-sense measurement, which is scaled to rms for sinewaves.

Generally the rms value would be used.

However, you may wish to use the second method if, for example, your test limits have been established by a previous measurement on a low cost multimeter which uses this technique.

Prev Next
Email Voltech
USA 1-239-437-0494
EUR 44 1235 861173
ASIA 44-1235-364-001
Site Map
Terms Of Business
Terms Of Use
Privacy
  • Terms Of Use
  • Privacy
  • Terms Of Business
  • Site Map
Contact Voltech
USA 1-239-437-0494
EUR 44 1235 861173
ASIA 44-1235-364-001
or
Email Voltech
 
Submit "Red" = required field
Please, complete all required fields.
Please, select country from the list.
Please, enter a valid Email.
Thank you for your question. We will reply to your request as soon as possible.
An error occurred.
Voltech © 2021
Voltech on LinkedIn Voltech on YouTube Voltech on Twitter
We have placed cookies on your computer to help make this website better.
Please read our Privacy Statement for further information. Otherwise, we'll assume you're OK to continue.
OK, Don't Show This Message Again