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
Collapse 5 Fixtures5 Fixtures
5.1 Introduction
Expand 5.2 Description of the Fixture System5.2 Description of the Fixture System
5.3 Kelvin Connections
Collapse 5.4 General Notes5.4 General Notes
5.4.1 Beware Of High Voltages
5.4.2 Kelvin Connections
5.4.3 Mechanical Problems
5.4.4 Wire Stripping
Expand 6 Front Panel Operation6 Front Panel Operation
Expand 7 Tests and Test Conditions7 Tests and Test Conditions
Expand 8 Specification8 Specification
Expand 9 Warranty and Service9 Warranty and Service
Expand 10 Safety Systems10 Safety Systems

5.4 General Notes

The following general notes should be considered when constructing or modifying fixtures.

5.4.1 Beware Of High Voltages

The AT3600 can apply AC voltages up to 5000 Vrms during the course of a test. This must be kept in mind when constructing test fixtures.

If possible, always design the fixture with the nodes that experience the same high voltages grouped together.

An example of this is the common situation of performing hi-pot tests between the primary windings as a group, and the secondary windings as a group.

The best layout for the test pins in this case (assuming this is not prohibited for other reasons) is to have all the primary windings connected to test nodes on one side of the fixture board (say the left-hand side using nodes 1, 3, 5, 7, etc.), and to have all the secondary windings connected to test nodes on the opposite side (for example, nodes 2, 4 and 6).

If, in addition, you need to test the isolation between two secondary windings, use the low-numbered nodes (say 2, 4 and 6) for one winding and a well separated group of high-numbered nodes (say 14, 16 and 18) for the other.

For PCB mounting transformers, clearly the spacing between the pins is determined by the transformer itself. If necessary, place pieces of high-voltage insulation between each Kelvin blade and its nearest neighbors, to prevent any high voltage flashover.

When separate terminals are used for transformers with flying leads, you should ensure that there is a generous separation between individual terminals to allow for the high voltages in your program. Consider both the exposed (high-voltage) metal parts of the terminal itself, and the free ends of the transformer lead, which may be carelessly inserted and may bend round to touch an adjacent terminal. Ensure that there is a separation of at least 3mm per kV between any sharp points in an air gap, assuming that the air is dry. Increase the separation still further for conditions of high humidity.

All leads between the terminals, or crocodile clips, and the contact pins on the AT3600 fixture plate should be covered with insulation capable of withstanding the test voltages you are using in your programs. They should be kept as short as possible, and the leads from one power-sense pair should not touch any bare metal associated with another power-sense pair.

Terminals or interconnections, which have exposed (high voltage) metal in contact with the surface of the fixture board, should be avoided where possible, as there may be creepage along the surface. If such a terminal is necessary, you must ensure that there are no sharp points or corners on the metal pieces, that the surface between them is scrupulously clean, and that a separation of at least 3mm per kV is used.

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