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Vanguard Instruments LTCA-10 User Manual
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USER’S MANUAL
for the
LTCA-10™
LTCA-40™
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Vanguard Instruments Company, Inc.
1520 S. Hellman Ave.
Ontario, California 91761
TEL: (909) 923-9390
March 2009
FAX: (909) 923-9391
Rev. 2.1
2
Table of Contents
Default Chapter
3
Table of Contents
3
Conventions Used in this Document
5
1 Introduction
6
General Description
6
Functional Description
6
Furnished Accessories
7
2 Technical Specifications
8
LTCA-10 Technical Specifications
8
Table 1.0 LTCA-10 Specifications
8
LTCA-40 Technical Specifications
9
Table 2.0 LTCA-40 Specifications
9
3 Controls and Indicators
10
LTCA-10 Controls and Indicators
10
Figure 1.0 LTCA-10 Controls and Indicators
10
Table 3.0 Functional Descriptions of LTCA-10 Controls and Indicators
11
LTCA-40 Controls and Indicators
12
Figure 2.0 LTCA-40 Controls and Indicators
12
Table 4.0 Functional Descriptions of LTCA-40 Controls and Indicators
13
4 Pre-Test Setup
14
Operating Voltages
14
LTCA-10/40 LCD Contrast Control
14
LTCA-10/40 Printer Paper Control
14
LTCA-10/40 Printer Paper
14
5 Operating Procedures
15
LTCA-10 Cable Connections
15
Figure 3.0 Typical LTCA-10 Connection Diagram (Dynamic Resistance Test)
15
LTCA-40 Cable Connections
16
Figure 4.0 Typical LTCA-40 Connection Diagram (Dynamic Resistance Test)
16
Figure 5.0 Typical LTCA-40 Connection Diagram (2 Windings)
17
Figure 6.0 Typical LTCA-40 Connection Diagram (3 Windings)
18
General Procedures
19
Performing a Resistance Test
20
Resistance Test Result Printouts
27
Figure 7.0 Typical Triple Reading Test Report Printout
27
Figure 8.0 Typical Dual Reading Test Report Printout
27
Figure 9.0 Typical Single Reading Test Report Printout
28
Performing a Special Resistance Test
29
Special Resistance Test Result Printout
34
Figure 10.0 Typical Single Reading Test Report Printout
34
Performing a Dynamic LTC Test
35
Dynamic LTC Test Result Printouts
40
Figure 11.0 Sample Normal Dynamic LTC Test Plot
40
Figure 12.0 Sample Dynamic LTC Test Expansion Plot
41
Diagnostic Mode
42
Setup Menu
44
Entering the Transformer ID
44
Restoring a Test Record
47
Figure 13.0 Typical Test Record Printout
49
Printing the Test-Record Directory
50
Figure 14.0 Typical Record Directory Printout
51
Erasing a Test Record
52
Enabling the Computer Interface
54
Setting the Date and Time
55
Setting the Test Value Display Font
56
6 Ltca-10/40 Special Features
57
Bypassing the Resistance Value Display Delay
57
Converting Resistance Measurements
57
4
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Vanguard Instruments LTCA-10 Specifications
General
Brand
Vanguard Instruments
Model
LTCA-10
Category
Measuring Instruments
Language
English
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