Mitsubishi Electric FR-F800 Series Instruction Manual page 93

Example
2
5.5 mm 5 m
ELB
Noise
filter
Inverter
Ig1 Ign
Igi
Inverter leakage current (with and without EMC filter)
Phase
earthing
(grounding)
Earthed-neutral
system
NOTE
• Install the earth leakage circuit breaker (ELB) on the input side of the inverter.
• In the
Earthing (Grounding) must conform to the requirements of national and local safety regulations and electrical codes. (NEC
section 250, IEC 61140 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 within 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 and products are standard breakers: the models BV-C1, BC-V, NVB, NV-L, NV-G2N, NV-G3NA, and
NV-2F, the earth leakage circuit breakers with AA neutral wire open-phase protection, and the earth leakage relays (except
NV-ZHA).
The other series, models, and products are designed for harmonic and surge suppression: the NV-C series, NV-S series, MN
series, the models NV30-FA, NV50-FA, NV-H, and BV-C2, earth leakage alarm breaker NF-Z, and the earth leakage relay NV-
ZHA.
92
3. PRECAUTIONS FOR USE OF THE INVERTER
3.1 Electro-magnetic interference (EMI) and leakage currents
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2
5.5 mm 50 m
3φ
M
200 V
2.2 kW
Ig2 Igm
EMC filter
Voltage
(V)
ON (mA) OFF (mA)
200 22
400 35
400 2
connection earthed-neutral system, the sensitivity current is blunt against a ground fault in the inverter output side.
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Item
Leakage current Ig1 (mA)
Leakage current Ign (mA)
Leakage current Igi (mA)
Leakage current Ig2 (mA)
Motor leakage current Igm
(mA)
Total leakage current (mA)
Rated sensitivity current (mA)
(≥ Ig × 10)
Remarks
1
2
Input power conditions
220 V/60 Hz (200 V class) or 440 V/60 Hz
(400 V class), within 3% of power supply
unbalance
1
Breaker designed
for harmonic and Standard breaker
surge suppression
5m
33 × = 0.17
1000m
0 (without noise filter)
1 (without EMC filter). For the leakage current
of the inverter, refer to the following table.
50m
33 × = 1.65
1000m
0.18
3.00 6.66
30 100