Megger AVTMTTR100 - Specifications; Electrical

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AVTMTTR100-ENG Rev 6 Nov 2015

SPECIFICATIONS

Electrical

Type of Power

Re-chargeable NIMH battery pack, 3.6 V, 3800 mAh

Battery charge level indication on power up

Battery Life: Up to 15 hours of field operation

Charger Input Voltage

100-250 V ac, 50/60 Hz ±2Hz

Unit can be operated while charging

Charging time: 3.5 hrs (approximately)

Pollution Degree

TTR is designed for Pollution Degree II

Environmental Protection

Dust and shower protection to IP54

Output Test Voltage and Current

2 test voltages, auto selectable: 8V rms for testing distribution or power

transformers and PTs; 1.5V rms or 8V rms for

testing CTs.

Current: up to 100 mA, 4 digit resolution

Test Frequency

55Hz, internally generated providing a universal 50 / 60 Hz test set.

Main Page

Table of Contents5
Introduction9
Receiving Instructions9
General Information9
Safety13
Specifications17
Electrical17
Environmental Conditions19
Physical Data19
Description21
Principle of Operation21
Controls, Indicators, and Connectors (Figure 4-1)21
Figure 4-1 Single-Phase TTR Display & Control Panel22
Figure 4-2. Top Side Connector Panel23
Setup and Connections25
General Instructions25
Transformers25
Single-Phase, Two-Winding Transformers26
Distribution Transformers with Two Secondary Windings26
Figure 5-1. Setup for Testing Single-Phase Transformer27
Figure 5-2. Setup for Testing Single-Phase Autotransformer27
Figure 5-3. Setup for Testing Single-Phase, Type a (Straight Design) Step Voltage Regulator28
Figure 5-4. Setup for Testing Single-Phase, Type B (Inverted Design) Step Voltage Regulator28
Current Transformers (Cts)29
Figure 5-5. Setup for Testing Unmounted Current Transformer30
Figure 5-6. Setup for Testing Taps on Multiple Tap CT30
Figure 5-7. Setup for Testing BCT Mounted on Single-Phase Two-Winding Transformer31
T-Type Transformers32
Table 5-1. ANSI Transformer Winding Phase Relationship32
Connections and Vector Voltage Diagrams33
Table 5-2. ANSI Transformer Winding Phase Relationship35
Table 5-3. CEI/IEC 76-1:2011 Transformer Winding Phase Relationship45
Table 5-4. Transformer Winding Phase Relationship (Australian Std. 2374, Part 4 - 2003)55
Operation61
General Operating Procedure61
Description of Menus and Test Screens61
Figure 6-1. Opening Display Screen62
Figure 6-2. Main Menu Screen63
Figure 6-3. Transformer Configuration Screen64
Figure 6-4. Single Phase Transformer Configuration Screen65
Figure 6-4A. Additional Single Phase Transformer Configuration Screen65
Figure 6-5. Three Phase Transformer Configuration Screen66
Figure 6-5A. Three Phase Transformer Configuration Screen66
Figure 6-6. T - Type Transformer Configuration Screen66
Quick Test Single Phase Transformer67
Figure 6-7. Transformer Rating Screen67
Quick Test Three Phase Transformer68
Test T-Type Transformers69
Full Test Single Phase Transformer70
Figure 6-8. TEST SETUP Screen70
Full Test Single Phase Tapped Transformer71
Full Test Cts72
Full Test Regulator72
Test Result Symbols73
Custom Configurations74
Figure 6-9. Custom Configs. Screen74
System Setup75
Figure 6-10. SYSTEM SETUP Screen 175
Figure 6-11. SYSTEM SETUP Screen 276
Figure 6-12. SAVED READINGS Screen77
Error Messages79
Table 6-1. Self-Test Error Messages79
Table 6-2. Test Error Messages80
Table 6-3. Test Result Error Messages81
Table 6-4. Miscellaneous Messages81
Use with the Optional Printer82
Figure 6-13A. Sample Test Report Header82
Figure 6-13B. Sample Single Phase Test Report82
Using Comlink Program83
Figure 6-14. Report Printout87
Service89
Maintenance89
Calibration89
TTR100 Test Set Functional Test90
Battery Maintenance91
Troubleshooting93
Table 7-1. Troubleshooting Guide93
Repair94
Ordering Information and Spare Parts List95
Warranty99

Megger AVTMTTR100 - Specifications; Electrical

Table of Contents

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