IEC 61557-9 Revised
IEC 61557-9:1999
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 9: Equipment for insulation fault location in IT systems
Specifies the requirements for insulation fault location systems which localize insulation faults in any part of the system in unearthed IT a.c. systems and unearthed IT a.c. systems with galvanically d.c. circuits having nominal voltages up to 1000 V a.c., as well as in unearthed IT d.c. systems with voltages up to 1500 V d.c., independent of the measuring principle.
This part is to be used in conjunction with IEC 61557-1.
This part is to be used in conjunction with IEC 61557-1.
CHFÂ 40.-
A more recent version of this publication exists:
IEC 61557-9:2023 CMV
Technical committee
TC 85 Measuring equipment for electrical and electromagnetic quantities| Publication type | International Standard |
| Publication date | 1999-09-24 |
| Edition | 1.0 |
| ICS | 25.040.40 |
| Withdrawal date | 2009-01-12 |
| ISBN number | 2831849101 |
| Pages | 23 |
| File size | 120.92 KB |