Table of Contents
Advertisement
Selection example for FR-E700 series and FR-D700 series
2
5.5mm
ELB
Noise
filter
Ig1
Note
・ Install the earth leakage breaker (ELB) on the input side of the inverter.
・ In the Y connection earthed-neutral system, the sensitivity current is blunt against an earth
(ground) fault in the inverter output side. Earthing (Grounding) must conform to the requirements
of national and local safety regulations and electrical codes. (NEC section 250, IEC 536 class 1
and other applicable standards)
・ When the breaker is installed on the output side of the inverter, it may be unnecessarily operated
by harmonics even if the effective value is less than the rating. In this case, do not install the
breaker since the eddy current and hysteresis loss will increase, leading to temperature rise.
・ The following models are standard breakers....BV-C1, BC-V, NVB, NV-L, NV-G2N, NV-G3NA and
NV-2F earth leakage relay (except NV-ZHA), NV with AA neutral wire open-phase protection
The other models are designed for harmonic and surge suppression....NV-C/NV-S/MN series,
NV30-FA, NV50-FA, BV-C2, earth leakage alarm breaker (NF-Z), NV-ZHA, NV-H
2
× 5m
× 50m
5.5mm
Inverter
IM
200V
2.2kW
Ign
Ig2
Igm
Igi
Leakage current Ig
1
Leakage current Ign
Leakage current Igi
Leakage current Ig
2
Motor leakage current
Igm
Total leakage current
Rated sensitivity current
( Ig×10)
4 - 6
Breaker Designed
for Harmonic and
Surge Suppression
5m
33 ×
1000m
15 (with noise filter SF1309)
1
50m
33 ×
1000m
0.18
18
200
(mA)
Standard
Breaker
= 0.17
= 1.65
21.66
500
Advertisement
Table of Contents
