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UT278A
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UNI-T UT278A Operating Manual
Clamp earth ground testers
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Contents
Table of Contents
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Table of Contents
Table of Contents
I Safety Instructions
Product Overview
Unpack and Check
Product Specification
Series Types
Range and Accuracy
Technical Specification
Clamp Meter Structure
Liquid Crystal Display
Instruction for Special Symbol
Display Demonstration
Operation Methods
Power-On
Power-Off
Resistance Measurement
Current Measurement
Data Hold/Unlock/Store
Data Inquiry
Alarm Function Setting
Alarm Critical Value Inquiry
Data Wipe
Data Uploading to Computer
Measurement Principles
Resistance Measurement Principle
Current Measurement Principle
Ground Resistance Measurement Method
Multi-Point Ground System
Limited Point Ground System
Single Point Ground System
On-Site Application
Application of Power System
Application of Telecommunication System
Application of the Building Lightning Protection Ground System
Application of the Gas Station Ground System
Notes about Ground Resistance Measurement
Appendix: Loop Resistance Analysis
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Table of Contents
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I Safety Instructions
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Product Specification
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Range and Accuracy
5
Resistance Measurement
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P/N:110401103514
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