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MTO300
Instruction manual
Megger MTO300 Instruction Manual
Transformer winding resistance test set
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Contents
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Table of Contents
Table of Contents
Upon Receipt of Product
MTO300 Transformer Test Set
MTO330A Transformer Test Set
Product Overview 300/330A
Top Panel Controls
Figure 1: MTO300 Front Panel
Figure 2: MTO330A Front Panel
MTO330A Top Panel Facilities
Figure 3: MTO330A Optional Controller with Display
Safety
Safety Is the Responsibility of the User
General Safety Precautions
Input Power Precautions
PC Interface Precautions
Specifications
Electrical
Input Power
Protective Devices (Fuses)
Winding Resistance Specifications
DC Output Current (User Selectable Ranges)
Open Circuit Test Voltage
Measurement Voltage
Max Power
Resistance Ranges
Display
Memory Storage
Communication Interface
Safety/Emc/Vibration
Environmental Conditions
Physical Data
Software Installation
Powerdb Lite Setup & Installation (PC Control Only)
Software Installation (PC Portion Only)
General Testing Procedures
Site Preparation
Making Circuit Connections
Operating the MTO300/330A
Description of Test Sequence
AUTOMATIC DISCHARGE Function
DEMAGNETIZATION Function
REMOTE TEST Function (MTO300 ONLY)
Three-Phase Transformer & Winding Resistance Testing
General
Procedure
Figure 4A: MTO Display on Startup
Figure 4B: MTO300/330A Using PC Software
Test Form Controls - General
Figure 5: Header Input
Figure 6: Nameplate Input
Transformer Test Conditions
Instrument Settings Button
Figure 7: Transformer Test Conditions
Figure 8: Instrument Setup Screen - Test Settings/Ω Settings
Winding Resistance Testing Methods
Method 1 - Resistance Test Wizard
Method 2 - Measuring Tap - All Phases Winding Resistance
Method 3 - Measuring Individual Tap Winding
Resistance Test Screen
Save/Retrieve Results
Retrieving Results/Test Files
Application Notes
Testing Delta Configured Windings
Delta Winding Resistance
Temperature Correction
Temperature Entry
Ordering Information/ Spare Parts
Service
Maintenance
Fuse Replacement
Calibration
Repairs
Error Codes
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MTO300
MTO330A
Transformer winding resistance test set
INSTRUCTION MANUAL
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Mto330a
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