Toshiba TOSVERT VF-MB1 Instruction Manual page 284

 Selection of wiring devices
Voltage
class
1 phase
240V
class
3 phase
500V
class
Note 6)
The recommended molded case circuit breaker (MCCB) must be connected to primary side of each inverter to
protect the wiring system.
Note 1: Models made by Toshiba Industrial Products Sales Corporation are shown.
Note 2: Be sure to attach a surge killer to the exciting coil of the relay and the magnetic contactor.
Note 3: When using the auxiliary contacts 2a of the magnetic contactor MC for the control circuit, connect the
10
Note 4: When a motor is driven by commercial power supply using commercial power supply / inverter switching
Note 5: Select an MCCB with a current breaking rating appropriate to the capacity of the power supply, because
Note 6: For the operation and control circuits, regulate the voltage at 200V to 240V with a step-down transformer
Note 7: In case of aul=2 setting, be sure to select the wiring device for 1 rating up motor.
Note 8: Regarding influence of leakage current, refer to section 1.4.3.
Input current (A)
Applicable
motor
(kW)
Without
With ACL
reactor
current
0.2 3.4 2.4
0.4 6.0 4.4
0.75 10.1 8.1
1.5 17.6 15.3
2.2 23.9 21.3
0.4 2.1 1.5
0.75 3.6 2.6
1.5 6.5 4.7
2.2 8.7 6.4
4.0 13.7 10.3
5.5 20.7 14.0
7.5 26.5 18.1
11 36.6 24.1
15 47.3 36.6
18.5 52.6 44.0
contacts 2a in parallel to increase reliability.
circuit, use a magnetic contactor appropriated AC-3 class the motor rated current.
short-circuit currents vary greatly depending on the capacity of the power supply and the condition of the
wiring system. The MCCB, MC and ELCB in this table were selected, on the assumption that a power
supply with a normal capacity would be used.
for 500V class.
Molded case circuit breaker (MCCB)
Earth leakage circuit breaker (ELCB)
Without reactor with ACL
Rated Rated
MCCB type
current
(ELCB type)
(A) (A)
5 5
10 10
NJ30E
15 10
(NJV30E)
30 20
30 30
5 5
5 5
10 10
NJ30E
15 10
(NJV30E)
20 15
30 20
30 30
NJ50EB
50 40
(NJV50EB)
60 50
NJ100FB
(NJV100FB)
75 60
J-2
Magnetic contactor
(MC) (Note 1 to 4)
Without reactor
Rated
MCCB type
current Model
(ELCB type)
(A)
20
CA13
20
NJ30E
20
(NJV30E)
32
CA20
32
20
20
CA13
20
NJ30E
20
(NJV30E)
20
32
CA20
32
50 CA25
NJ50EB
(NJV50EB)
60 CA35
NJ100EB
80 CA50
(NJV100EB)
E6581697
with ACL
Rated
current Model
(A)
20
20
CA13
20
20
32 CA20
20
20
20
CA13
20
20
20
32
CA20
32
50 CA25
60 CA35