Mitsubishi Electric CAHV-R450YA-HPB Installation & Operation Manual page 44

Caution:
• Some installation sites may require an installation of an earth leakage breaker for the inverter. If no earth
leakage breaker is installed, there is a danger of electric shock.
• Only use properly rated breakers and fuses. Using a fuse or wire of the wrong capacity may cause
malfunction or fire.
• If a large electric current flows due to a malfunction or faulty wiring, earth-leakage breakers on the unit
side and on the upstream side of the power supply system could both operate. Depending on the
importance of the system, separate the power supply system or take protective coordination of breakers.
Note:
• This device is intended for the connection to a power supply system with a maximum permissible system
impedance shown in the above table at the interface point (power service box) of the user's supply.
• Ensure that this device is connected only to a power supply system that fulfills the requirements above.
If necessary, consult the public power supply company for the system impedance at the interface point.
• This equipment complies with IEC 61000-3-12 provided that the short-circuit power S
equal to S (*2) at the interface point between the user's supply and the public system. It is the
SC
responsibility of the installer or user of the equipment to ensure, in consultation with the distribution
network operator if necessary, that the equipment is connected only to a supply with a short-circuit power
S greater than or equal to S
SC
S (*2)
SC
S (MVA)
SC
3.80
Control cable specifications
Size
Remote controller cable
Recommended cable types
Size
M-NET cable between units
*1
Recommended cable types
Size
External input wire size
*2
Recommended cable types
Size
External output wire size
*2
Recommended cable types
*1 Use a CVVS or CPEVS cable (Max. total length of 200 m) if there is a source of electrical interference near by (e.g., factory) or the total length of control wiring
exceeds 120 m.
*2 At least 1 mm thickness of supplementary insulation shall be provided.
(*2).
SC
44
0.3 - 1.25 mm² (Max. 200 m total)
CVV
Min. 1.25 mm² (Max. 120 m total)
Shielded cable CVVS, CPEVS or MVVS
Min. 0.3 mm²
Shielded cable CVVS, CPEVS or MVVS
1.25 mm²
Shielded cable CVVS, CPEVS or MVVS
is greater than or
SC