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Table of Contents
NGRM7xx_D00292_07_M_XXEN/02.2022
1. Important information ........................................................................... 7
1.1 How to use this manual ................................................................................... 7
1.2 Technical support: service and support .................................................... 8
1.2.1 First level support .............................................................................................. 8
1.2.2 Repair service ...................................................................................................... 8
1.2.3 Field service ......................................................................................................... 9
1.3 Training courses ................................................................................................. 9
1.4 Delivery conditions ........................................................................................... 9
1.5 Inspection, transport and storage ............................................................... 9
1.6 Warranty and liability ..................................................................................... 10
1.7 Disposal ............................................................................................................... 10
2. Safety instructions ............................................................................... 11
2.1 General safety instructions .......................................................................... 11
2.2 Work activities on electrical installations ................................................ 11
2.3 Intended use ..................................................................................................... 12
2.4 Glossary ............................................................................................................... 13
3. Function ................................................................................................. 14
3.1 Device features ................................................................................................. 14
3.2 Functional description ................................................................................... 15
3.3 NGRM700: Recommended minimum value RNGR
(tripping level 50 %) ............................................................................................. 16
3.3.1 Recommended RNGR for system voltage Usys ≤ 4300 V
(HRG system) ...................................................................................................... 16
3.3.2 Recommended RNGR for system voltage Usys > 4300 V
(HRG system) ...................................................................................................... 17
4. Mounting .............................................................................................. 18
4.1 Screw mounting .............................................................................................. 18
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