Hitachi NE-S1 series Basic Manual page 11

④Inverter ground terminal (G
・ Be sure to ground the inverter and motor to prevent electric shock.
・ According to the Electric Apparatus Engineering Regulations, connect 200 V class models to grounding electrodes constructed in compliance
with type-D grounding (conventional type-III grounding with ground resistance of 100Ω or less) or the 400 V class models to grounding electrodes
constructed in compliance with type-C grounding (conventional special type-III grounding with ground resistance of 10Ω or less).
・ Use a grounding cable thicker than the specified applicable cable, and make the ground wiring as short as possible.
・ When grounding multiple inverters, avoid a multi-drop connection of the grounding route and formation of a ground loop, otherwise the inverter
may malfunction.
(2) Layout of main circuit terminals
The figures below show the terminal layout on the main circuit terminal block of the inverter.
The main circuit terminal block opens a faceplate and wires it.
Single-phase 200V 0.2 to 0.4kW
Three-phase 200V 0.2 to 0.75kW
Single-phase
L1
type
U/T1 V/T2
Three-phase
type
R/L1 S/L2
U/T1 V/T2
From source
To motor
(4)Wiring and Accesories
The table below lists the specifications of cables, crimp terminals, and terminal screw tightening torques for reference.
Applicable
Motor
Input
inverter
output
model
Voltage
(kW)
NES1-
0.2 002SB
0.4 004SB
1-phase
0.75 007SB
200V
1.5 015SB
2.2 022SB
0.2 002LB
0.4 004LB
3-phase
0.75 007LB
200V
1.5 015LB
2.2 022LB
Note 1)The peripheral equipment described here is applicable when the inverter connects a standard Hitachi 3-phase, 4-pole squirrel-cage motor.
Note 2)Select breakers that have proper capacity. (Use breakers that comply with inverters.) Select above proper ELB capacity following above table
for the 1pc inverter. Only 1 inverter must be supplied by the above proper ELB.
Note 3)If the power line exceeds 20m, cable that is thicker than the specified applicable cable must be used for the power line.
Note 4)Use copper electric wire (HIV cable) of which the maximum allowable temperature of the insulation is 75°C.
Note 5)Use earth-leakage breakers (ELB) to ensure safety.
Note 6)To comply UL, use either ELB/or FUSE which is specified by UL for the Power supply for the inverter.
Note 7)The ground or earthed line should be a larger gauge than electric supply wire diameter used in the power line.
)
Inverter
Inverter
Inverter
N
P/+
W/T3 PD/+1
Charge lump
T/L3 P/+
W/T3
PD/+1
Wiring
Size of terminal
Gauge of power line
2
cable (mm )
Terminal width
Note3)
Note4)
AWG14 (2.0)
AWG14 (2.0)
AWG14 (2.0)
AWG10 (5.5)
AWG10 (5.5)
AWG16 (1.25)
AWG16 (1.25)
AWG16 (1.25)
AWG14 (2.0)
AWG14 (2.0)
Inverter
Inverter
Inverter
Single-phase 200V 0.75 to 2.2kW
Three-phase 200V 1.5, 2.2kW
Single-phase type
Charge lump
Three-phase type
R/L1
screw
Tightening
torque
(mm)
(N-m)
M3.5 (7.6) 1.0
M3.5 (7.6) 1.0
M4 (10) 1.4
M4 (10) 1.4
M4 (10) 1.4
M3.5 (7.6) 1.0
M3.5 (7.6) 1.0
M3.5 (7.6) 1.0
M4 (10) 1.4
M4 (10) 1.4
11
Grounding bolt
prepared by user
N
L1 P/+
PD/+1
P/+
S/L2 T/L3
PD/+1
From source
Accessories
Magnetic
Earth-leakage
contactor
breaker (ELB)
(MC)
Note2)Note5)
Note2)
EX30 (5A) H10C
EX30 (10A) H10C
EX30 (15A) H10C
EX30 (20A) H20
EX30 (20A) H20
EX30 (5A) H10C
EX30 (10A) H10C
EX30 (10A) H10C
EX30 (15A) H10C
EX30 (20A) H20
U/T1 V/T2 W/T3
U/T1 V/T2 W/T3
To motor
Note1)
Fuse
(UL-rated,
class J,600V)
Note6)
10A
10A
15A
20A
30A
10A
10A
15A
15A
20A