Reliable monitoring of drive technology/conveyor technology

Electric motors or pumps

Modern electric motors and pumps are commonly controlled by power-conversion equipment, including soft starters and variable frequency drives (VFD). These types of power conversion equipment can cause problems with traditional ground-fault monitoring techniques, due to DC or low-frequency AC signals, harmonics, and carrier frequencies.

Using advanced ground-fault monitoring technology, Bender products detect and report accurate ground-fault readings throughout the entire power conversion process. A wide range of products are available for solidly grounded, high-resistance grounded, and ungrounded electrical systems. 

Product overview ISOMETER®
Product overview Residual current monitoring
Technical paper Insulation fault location - Planning and set up in the solar charging station at the University of Applied Sciences Bingen
Technical paper Electrical safety in control and auxiliary circuits

Recommended systems for ground-fault detection (ungrounded systems):

Recommended systems for ground-fault location:

Recommended systems for ground-fault monitoring (grounded systems):

Recommended measuring current transformers:

Analysing and reporting:

EN 61557-8
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 8: Insulation monitoring devices for IT systems

EN 61557-9
Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 9: Equipment for insulation fault location in IT systems

EN 61557-15
Electrical safety in low voltage distribution systems up to 1000 V ac and 1500 V dc - Equipment for testing, measuring or monitoring of protective measures - Part 15: Functional safety requirements for insulation monitoring devices in IT systems and equipment for insulation fault location in IT systems

DIN EN 50178
Electronic equipment for use in power installations

IEC 60204-1
Safety of machinery - Electrical equipment of machines - Part 1: General requirements