Chanllenges and Requirements in VFD Cable Design



Table of Contents
1 WHAT IS A VARIABLE-FREQUENCY DRIVE? ...................................................................... 1
2 DESCRIPTION OF A VFD SYSTEM......................................................................................... 5
2.1 VFD DEVICE... 5
2.2 VFD CABLE ... 7
2.3 VFD MOTOR ... 8
3 VARIABLE-FREQUENCY DRIVE MANUFACTURERS IN NORTH AMERICA ...................... 9
4 ISSUES AND DIFFICULTIES DURING VFD OPERATION ................................................... 11
5 EXAMPLES OF VFD MANUFACTURER STATEMENTS ON REQUIREMENTS OF VFD
CABLES ... 17
5.1 ABB (ASEA BROWN BOVERI)................................................................................................... 17
5.2 ROCKWELL AUTOMATION – ALLEN-BRADLEY ............................................................................ 17
6 DEMANDS ON VFD CABLES ................................................................................................ 18
6.1 TECHNICAL DEMANDS ... 18
6.2 INSTALLATION DEMANDS ... 18
6.3 REVIEW OF THE DEMANDS ... 18
7 COMPARISON OF INSULATION MATERIALS ..................................................................... 19
7.1 POLYVINYL CHLORIDE (PVC) ................................................................................................... 19
7.2 POLYVINYL CHLORIDE WITH NYLON COATING (THHN) ............................................................... 19
7.3 CROSS-LINKED POLYETHYLENE (XLPE) ................................................................................... 20
7.4 THERMOPLASTIC POLYESTER ELASTOMER (TPE) ..................................................................... 20
7.5 SEMI-CONDUCTIVE LAYER ... 21
8 COMPARISON OF CABLE JACKET MATERIALS ............................................................... 22
8.1 POLYVINYL CHLORIDE (PVC) ................................................................................................... 22
8.2 TPE THERMOPLASTIC ELASTOMER .......................................................................................... 22
8.3 POLYURETHANE (PUR) ... 22
9 REQUIREMENTS FOR VFD CABLES IN FACTORY AUTOMATION APPLICATIONS ...... 23
9.1 FIXED INSTALLATION ... 23
9.2 CONTINUOUS MOTION INSTALLATION ........................................................................................ 23
10 LUTZE VFD CABLES ... 25
10.1 LUTZE DRIVEFLEX™ VFD AND SERVO CABLE ...................................................................... 25
10.2 LUTZE SUPERFLEX PLUS M (C) PUR 0.6/1KV .......................................................................... 26
11 METHODS TO IMPROVE OPERATION RELIABILITY ......................................................... 27
12 INSTALLATION GUIDELINES FOR VFD CABLES ............................................................... 28
13 GLOSSARY ... 29
14 TABLE OF FIGURES ... 32
15 LIST OF REFERENCES ... 33

Register to see link

You are not allowed to view links. Register or Login