Mitsubishi Electric FR-S520E Series Instruction Manual page 34

Main circuit terminals
Table 5 Rated Capacities and Outgoing Harmonic Currents for Inverter Drive
Rated
Applied
Current [A]
Motor
(kW)
200V 400V
0.4 1.61 0.81
0.75 2.74 1.37
1.5 5.50 2.75
2.2 7.93 3.96
3.7 13.0 6.50
3) Harmonic suppression technique requirement
If the outgoing harmonic current is higher than; maximum value per 1kW (contract
power) × contract power, a harmonic suppression technique is required.
4) Harmonic suppression techniques
No. Item
Reactor installation
1 (ACL, DCL)
Installation of power
2 factor improving
capacitor
Transformer multi-
phase operation
3
Passive
4 (AC filter)
Active filter
5
6.6kV
Input
Equivalent of
rated
fundamental
capacity
wave input
(kVA)
current (mA)
49 0.57
83 0.97
167 1.95
240 2.81
394 4.61
Install a reactor (ACL) in the AC side of the inverter or a reactor
(DCL) in its DC side or both to suppress outgoing harmonic
currents.
When used with a series reactor, the power factor improving
capacitor has an effect of absorbing harmonic currents.
Use two transformers with a phase angle difference of 30
Δ Δ Δ
, - combination to provide an effect corresponding to 12 pulses,
reducing low-degree harmonic currents.
A capacitor and a reactor are used together to reduce impedances
at specific frequencies, producing a great effect of absorbing
harmonic currents.
This filter detects the current of a circuit generating a harmonic
current and generates a harmonic current equivalent to a difference
between that current and a fundamental wave current to suppress
a harmonic current at a detection point, providing a great effect of
absorbing harmonic currents.
Outgoing Harmonic Current Converted from
6.6kV (mA)
(without reactor, 100% operation ratio)
5th 7th 11th 13th 17th 19th 23rd 25th
31.85 20.09 4.165 3.773 2.107 1.519 1.274 0.882
53.95 34.03 7.055 6.391 3.569 2.573 2.158 1.494
108.6 68.47 14.20 12.86 7.181 5.177 4.342 3.006
156.0 98.40 20.40 18.48 10.32 7.440 6.240 4.320
257.1 161.5 33.49 30.34 16.94 12.21 10.24 7.092
Description
24
°
as in -