Warranty, Limitations of Liability .................................................................................................................. 2

Application Considerations .......................................................................................................................... 3

Disclaimers .................................................................................................................................................. 3

Precautions............................................................................................................... 4

Definition of Precautionary Information........................................................................................................ 4

Symbols ....................................................................................................................................................... 4

Precautions for Safe Use ......................................................................................... 6

Precaution for Correct Use...................................................................................... 8

Regulations and Standards ..................................................................................... 9

Conformance to Safety Standards............................................................................................................... 9

Conformance to EN/IEC Standards ........................................................................................................... 10

Terminology ............................................................................................................ 11

Manual Structure .................................................................................................... 12

Page Structure ........................................................................................................................................... 12

Icons .......................................................................................................................................................... 12

Revision History ..................................................................................................... 13

Sections in this Manual ......................................................................................... 15

CONTENTS.............................................................................................................. 16

Section 1

Overview

1-1

Overview................................................................................................................................. 1-2

1-2

Features.................................................................................................................................. 1-3

1-3

Model Number Legend .......................................................................................................... 1-6

1-4

Insulation Resistance Measurement and Monitoring System........................................... 1-7

1-5

Nomenclature and Functions ............................................................................................... 1-8

1-6

Internal Block Diagram ....................................................................................................... 1-14

1-7

System Configurations ....................................................................................................... 1-16

1-8

Safety Precautions .............................................................................................................. 1-18

Section 2

Procedure

2-1

Procedure............................................................................................................................... 2-2

(1) Advance Preparation........................................................................................................................... 2-2

(2) Installation and Wiring ......................................................................................................................... 2-3

(3) Initial Setting........................................................................................................................................ 2-5

(4) Test Operation with Manual Measurement ......................................................................................... 2-7

(5) Starting Operation ............................................................................................................................... 2-8

Troubleshooting ...................................................................................................................................... 2-10

Insulation Resistance Monitoring Device User's Manual (N224)