Hitachi L700 Series, Instruction Manual, Page: 7 / 263

Safety Instructions
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Precautions Concerning Electromagnetic Compatibility (EMC)
The L700 series inverter conforms to the requirements of Electromagnetic Compatibility (EMC) Directive
(2004/108/EC). However, when using the inverter in Europe, you must comply with the following
specifications and requirements to meet the EMC Directive and other standards in Europe:
WARNING: This equipment must be installed, adjusted, and maintained by qualified engineers who
have expert knowledge of electric work, inverter operation, and the hazardous circumstances that can
occur. Otherwise, personal injury may result.
1. Power supply requirements
a. Voltage fluctuation must be -15% to +10% or less.
b. Voltage imbalance must be ±3% or less.
c. Frequency variation must be ±4% or less.
d. Total harmonic distortion (THD) of voltage must be ±10% or less.
2. Installation requirement
a. A special filter intended for the L700 series inverter must be installed.
3. Wiring requirements
a. A shielded wire (screened cable) must be used for motor wiring, and the length of the cable must be
according to the following table (Table 1).
b. The carrier frequency must be set according to the following table to meet an EMC requirement
(Table 1).
c. The main circuit wiring must be separated from the control circuit wiring.
4. Environmental requirements (to be met when a filter is used)
a. Ambient temperature must be within the range -10°C to +40°C.
b. Relative humidity must be within the range 20% to 90% (non-condensing).
c. Vibrations must be 5.9 m/s
2
(0.6 G) (10 to 55 Hz) or less. (11 to 30kW)
2.94 m/s
2
(0.3 G) (10 to 55Hz) or less. (37 to 160kW)
d. The inverter must be installed indoors (not exposed to corrosive gases and dust) at an altitude of
1,000 m or less.
model cat. cable length(m)
carrier
frequency(kHz)
model cat. cable length(m)
carrier
frequency(kHz)
L700-110L C3 1 1 L700-110H C3 1 2.5
L700-150L C3 1 1 L700-150H C3 1 2.5
L700-185L C3 1 1 L700-185H C3 1 2.5
L700-220L C3 1 1 L700-220H C3 1 2.5
L700-300L C3 5 2.5 L700-300H C3 1 2.5
L700-370L C3 5 2.5 L700-370H C3 1 2.5
L700-450L C3 5 2.5 L700-450H C3 1 2.5
L700-550L C3 20 3 L700-550H C3 5 2.5
L700-750L C3 20 3 L700-750H C3 5 2.5
L700-900H C3 10 2.5
L700-110H C3 10 2.5
L700-1320H C3 10 2.5
L700-1600H C3 10 2.5
Table 1
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