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Technical Document Reader
Document
098-024
Name

AT3600 User Manual

Description
The full user manual for the AT3600 transformer tester.
AT3600 User Manual
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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
Expand 7 Tests and Test Conditions7 Tests and Test Conditions
Collapse 8 Specification8 Specification
Collapse 8.1 Specification8.1 Specification
8.1.1 Specification Summary
Collapse 8.1.2 Accuracy Specifications8.1.2 Accuracy Specifications
8.1.2.1 R Test
8.1.2.2 LS LP RLS RLP LL LLO AND C Tests
8.1.2.3 QL AND D Tests
8.1.2.4 TR Test
8.1.2.5 MAGI Test
8.1.2.6 MAGX Test (External Source)
8.1.2.7 VOC Test
8.1.2.8 VOCX Test (External Source)
8.1.2.9 LVOC Test
8.1.2.10 IR Test
8.1.2.11 HPDC Test
8.1.2.12 HPAC Test
8.1.2.13 LSB AND LPB Tests
8.1.2.14 WATT AND STRW Tests
8.1.2.15 WATX AND STRX Tests (External Source)
8.1.2.16 SURG Test
8.1.2.17 L2 C2 AND R2 Tests
8.1.2.18 GBAL Test
8.1.2.19 LBAL AND ILOS Tests
8.1.2.20 RESP Test
8.1.2.21 RLOS Test
8.1.2.22 Z AND ZB Test
8.1.2.23 ANGL Test
8.1.2.24 PHAS Test
8.2.2.25 ILK Test
8.1.2.26 LSBX AND LPBX Tests
8.2.2.27 ZBX Test
8.1.2.28 ACRT Test
8.2.2.29 DCRT Test
8.1.2.30 ACVB Test
8.2.2.31 DCVB Test
Expand 8.2 Interface Details8.2 Interface Details
8.3 Environmental Conditions
Expand 8.4 EMC Compliance8.4 EMC Compliance
Expand 9 Warranty and Service9 Warranty and Service
Expand 10 Safety Systems10 Safety Systems

8.1.2.6 MAGX Test (External Source)

The accuracy for measuring magnetising current using an external source is:

AT = AR + AC + AI + AOFF + AESI + ASRCE

Where
AT is the total accuracy (%)
AR is the basic relative accuracy (%)
AC is the calibration accuracy (%)
AI is the correction for the current level (%)
AOFF is the error in the compensation measurement (%)
AESI is the error in the current measurement from the source interface (%)
ASRCE is the correction for the external source type (%)

The value of AR is given in the table in section 1.1 of this chapter
AC       = 0.03% + (0.001 * FM)
AI        = 0.03% + (0.0001 / IM) + (2 * IM)
AOFF   = (0.76% + (0.001 * FM) ) * (0.3 / IM)
AESI    = 0.5%
ASRCE = 0.5% for manual / line supply
           = 0.0% for analogue / amplifier and AT output transformer

FM    is the test frequency (Hz)
IM    is the measured current (A)

During a MAGX test, the AT3600 automatically applies the test voltage to the part under test and checks that the voltage has stabilised before recording measurements. The time that the voltage takes to stabilise will vary with the source type used and the nature of the part under test.

In general (and especially for source types 'Programmable' and 'AT Output Transformer'), the AT3600 will record a measurement very quickly, (typically in less than 0.5 seconds) which is desirable in a production test environment.

If the measurement were to be recorded after a longer period of time under power, slightly different readings may be obtained due to self-heating effects in the part under test. This effect may be noticed when comparing results taken using different source types or with slower measurement systems.

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