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Peripheral Devices
1
INSTALLATION AND WIRING
* Note the leakage current value of the noise filter installed on the inverter input side.
CAUTION
•The earth (ground) leakage circuit breaker should be installed to the
primary (power supply) side of the inverter.
•In the connection neutral point grounding system, the sensitivity current
becomes worse for earth (ground) faults in the inverter secondary side.
Hence, the protective earthing (grounding) of the load equipment should be
10Ω
ΩΩ
Ω or less.
•When the breaker is installed in the secondary side of the inverter, it may
be unnecessarily operated by harmonics if the effective value is less than
the rating.
In this case, do not install the breaker since the eddy current and
hysteresis loss increase and the temperature rises.
•General products indicate the following models: BV-C1, BC-V, NVB, NV-L,
NV-G2N, NV-G3NA, NV-2F, earth (ground) leakage relay (except NV-ZH), NV
with single-phase, three-wire neutral conductor/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,
NV-ZH
Product designed for
harmonic and surge
suppression
General product
Leakage current Ig1 (mA) 20×
5m
=0.10
1000m
Leakage current Ign (mA) 0 (without noise filter)
Leakage current Ig2 (mA)
20
×
70m
=1.40
1000m
Motor leakage current Igm (mA) 0.14
Total leakage current (mA) 1.66 4.78
Rated sensitivity current (mA)
(
≥Ig × 10)
30 100