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3.2 Description of Peripheral Devices for Main Circuit
Circuit breaker
RCCB
Contactor
Input AC reactor
or DC reactor
Input noise filter
Thermal protection
relay
Output noise filter
Output AC reactor
3.3 Models of Main Circuit Peripheral Devices
Circuit
Inverter model
Breaker
(A)
E5−H−4T0.75G
E5−H−4T1.5G
E5−H−4T2.2G
E5−H−4T3.7G
E5−H−4T5.5G
E5−H−4T7.5G
E5−H−4T11G
E5−H−4T15G
E5−H−4T18.5G
100
E5−H−4T22G
100
E5−H−4T30G
125
E5−H High Performance Universal Inverter
The circuit breaker capacity shall be 1.5 ~ 2 times of the inverter rated current.
The time features of the circuit breaker shall fully consider the time features of the inverter
overload protection.
Because the inverter output is the high−frequency pulse, there will be high−frequency
leakage current. Special RCCB shall be used when installing RCCB at the inverter input side.
It is suggested that B type RCCB be used, and the leakage current value shall be set to
300mA.
Frequent contactor tripping will cause inverter failure, so the highest frequency for contactor
tripping shall not exceed 10 times/min.
When a braking resistor is used, to avoid the overtemperature damage of the braking resistor,
a thermal protection relay with braking resistor overtemperature detection shall be installed to
disconnect the contactor at the contact control power side of the thermal protection relay.
1.
The inverter power supply capacity is more than 600kVA or 10 times of the inverter capacity.
2. If there is switch type reactive−load compensation capacitor or load with silicon control at
the same power node, there will be high peak current flowing into input power circuit,
which damages the rectifier components.
3. When the voltage imbalance of the three−phase power supply of the inverter exceeds
3%, the rectifier component will be damaged.
4. It is required that the input power factor of the inverter shall be higher than 90%.
When the above situations occur, install the AC reactor at the inverter input side or DC
reactor to the DC reactor terminal.
The noise input from the power end to the inverter and output from the inverter to the power
end can be reduced.
Although the inverter has motor overload protection function, when one inverter drives two or
more motors or multi−pole motors, to prevent the motor overtemperature failure, a thermal
protection relay shall be installed between the inverter and each motor, and the motor
overload protection parameter P9.16 shall be set to "2" (motor protection disabled).
When the output of the inverter is connected with noise filter, the conduction and radiation
interference can be reduced.
When the cable connecting the inverter and the motor is longer than 100m, it is suggested to
install AC output reactor to suppress the high−frequency oscillation to avoid damaging motor
insulation, large leakage current and frequent inverter protective action.
R/L1, S/L2, T/L3,
Contactor
(A)
Terminal
screw
10
10
M4
16
10
M4
16
10
M4
25
16
M4
32
25
M4
40
32
M4
63
40
M5
63
63
M5
63
M6
100
M6
100
M6
Chapter 3 Wiring of Inverter
⊕
⊕
1,
2/B1, B2,
Ө
, U/T1, V/T2, W/T3
Tightenin
Wire
g torque
specificatio
(N·m)
n (mm
1.2~1.5
2.5
1.2~1.5
2.5
1.2~1.5
2.5
1.2~1.5
4
1.2~1.5
6
1.2~1.5
6
2.5~3.0
6
2.5~3.0
6
4.0~5.0
10
4.0~5.0
16
4.0~5.0
25
User Manual
PE terminal
Tightening
Terminal
torque
screw
2
)
(N·m)
M4
1.2~1.5
M4
1.2~1.5
M4
1.2~1.5
M4
1.2~1.5
M4
1.2~1.5
M4
1.2~1.5
M5
2.5~3.0
M5
2.5~3.0
M6
4.0~5.0
M6
4.0~5.0
M6
4.0~5.0
Wire
specification
2
(mm
)
2.5
2.5
2.5
4
6
6
6
6
10
16
16
15
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