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Megger Three-Phase TTR User Manual

Megger Three-Phase TTR
70 pages
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AVTMTTR330
Rev 3
March 2010
Instruction Manual
for
Three-Phase TTR
®
Transformer Turn Ratio Test Set
TTR330 Series
Catalog Nos. TTR330, TTR330-47
HIGH-VOLTAGE EQUIPMENT
Read this entire manual before operating.
M
Valley Forge Corporate Center
2621 Van Buren Avenue
Norristown, PA 19403-2329
U.S.A.
610-676-8500
www.megger.com

Table of Contents

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Megger Three-Phase TTR Specifications

General IconGeneral
DisplayLCD
InterfaceUSB
Weight5 kg
Test Voltage8V, 80V
Data StorageInternal memory (up to 200 test results), USB flash drive

Summary

Getting to Know the TTR330

Product Overview

Details the features and capabilities of the Three-Phase TTR Test Set.

Top Panel Controls

Describes the physical controls and connectors on the top panel of the TTR330 unit.

User Interface Panel

Explains the functions of the display, keypad, and navigation keys for operation.

Communications Ports

Identifies and describes the Ethernet and USB ports for data transfer and connectivity.

HOME Screen Action Icons

Details the icons used for navigating and performing core actions on the HOME screen.

Safety Precautions and Guidelines

User Responsibility for Safety

Emphasizes user accountability for safe operation and adherence to manual instructions.

General Safety Precautions

Lists essential safety warnings and precautions for operating the TTR330 and UUT.

Input Power Safety

Details precautions for connecting the TTR330 to the power source, including grounding.

Preparing for Transformer Testing

Site Preparation Requirements

Outlines the recommended environmental and safety conditions for setting up the test.

Circuit Connection Procedures

Provides step-by-step instructions for making all necessary circuit connections.

Connecting the TTR330 to Transformers

Single-Phase Transformer Connections

Guides connection setup for single-phase, two-winding transformers and regulators.

Three-Phase Transformer Connections

Details connection procedures for three-phase, two-winding and three-winding transformers.

Current Transformer (CT) Connections

Describes the reversed connection method for testing current transformers (CTs).

Bushing CT and T-Type Transformer Connections

Explains connections for BCTs and T-type transformers, including specific configurations.

Operating the TTR330 Test Set

Powering Up and Navigation

Instructions for powering up, navigating the screen, and using HOME action icons.

File Management and Settings

Covers saving/recalling files and configuring global settings and preferences.

Remote Control and Error Handling

Details remote LTC testing, error messages, and their interpretation.

Test Completion and Powering Down

Provides step-by-step instructions for safely completing tests and powering down the unit.

Service and Maintenance

Routine Maintenance Procedures

Guidelines for periodic inspection, cleaning, and care of the TTR330 unit.

Fuse Replacement and Voltage Selection

Details how to replace fuses and select the correct input voltage for operation.

Calibration and Self-Check

Explains annual calibration procedures and how to perform a functional self-check.

Troubleshooting Common Issues

Provides a guide to diagnose and resolve common malfunctions and error messages.

Repair Service Information

Information on how to obtain professional repair services for the TTR330.

Specifications and Technical Data

Electrical and Performance Specifications

Details electrical parameters, input/output specs, ranges, and accuracy of the TTR330.

Operational and Physical Specifications

Covers measurement method, display, memory, environmental conditions, and physical data.

Addendum A: TTR 300 Series PowerDB Lite User Manual

Introduction to PowerDB Lite

Introduces PowerDB Lite, its features, and minimum system requirements for installation.

Minimum Recommended System

Lists the minimum system requirements for installing and running PowerDB Lite.

PowerDB Lite Features

Highlights key features of PowerDB Lite, including report generation and data integration.

Software Installation

Provides step-by-step instructions for installing and configuring the PowerDB Lite software.

Using PowerDB Lite Software

Comprehensive guide to software setup, operation, data management, and specific test forms.

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