9
SANCH ELECTRIC shall not be responsible for faults due to the following:
(1) Absence or inapplicable or over large non fuse breakers was put between the power supply and the
inverter, which results in the inverter fault.
(2) Magnetic contactors or advance capacitor or Surge Absorber were connected in series between the
inverter and motor.
A three phase Squirrel-cage induction motor which corresponds with the capacity of the inverter
shall be adopted.
If more than one motors were driven simultaneously by one inverter, the current of these motors
when running shall below capacity of the inverter. And each motor shall be prepared with a
thermal relay in appropriate capacity.
Phase advance capacitors and other capacity elements such as LC or RC shall not be fixed
between the inverter and motor.
2.4 List of applicable no-fuse breaker
Type
S900-2S
single-phase
series
Suitable power
of motor (kW)
Rated current
of breaker (A)
Main return circuit
Control circuit
(mm
²
)
Input
wire
Positive and
negative bus
Output
wire
Grounding
wire
Control terminal
wire
S900-2S0.2G
0.2
10
1
1
1
2
1
S900-2S0.4G
0.4
15
1.5
1
1
2
1
S900-2S0.75G
0.75
20
2.5
1
1
2
1
S900-2S1.5G
1.5
40
4
1.5
2.5
2
1
S900-2S2.2G
2.2
50
5.5
1.5
2.5
2
1
Type
S900-4T
three-phase
series
Suitable power
of motor (kW)
Rated current
of breaker (A)
Main return circuit
Control circuit (mm
²
)
Input wire Positive and
negative bus
Output
wire
Grounding
wire
Control terminal wire
S900-4T0.4G
0.4
5
1
1
1
2
1
S900-4T0.75G
0.75
10
1
1
1
2
1
S900-4T1.5G
1.5
15
1.5
1
1.5
2
1
S900-4T2.2G
2.2
15
1.5
1.5
1.5
2
1
S900-4T3.7G
3.7
20
2.5
1.5
2.5
2
1
