DRV-28 inverter
s Optional peripheral accessories
-327-
2.
Use a megameter of 500VDC to measure the insulation resistance between each phase
conductor and the protection grounding conductor. For details about the insulation resistance of
the motor, see the description provided by the manufacturer.
Note:
The insulation resistance is reduced if it is damp inside the motor. If it may be damp, you
need to dry the motor and then measure the insulation resistance again.
D.5 Breaker and electromagnetic contactor
You need to add a fuse to prevent overload.
You need to configure a manually manipulated molded case circuit breaker (MCCB) between the AC
power supply and inverter. The breaker must be locked in the open state to facilitate installation and
inspection. The capacity of the breaker needs to be 1.5 to 2 times the rated current of the inverter.
According to the working principle and structure of breakers, if the
manufacturer's regulation is not followed, hot ionized gases may escape
from the breaker enclosure when a short-circuit occurs. To ensure safe use,
exercise extra caution when installing and placing the breaker. Follow the
manufacturer's instructions.
To ensure safety, you can configure an electromagnetic contactor on the input side to control the
switch-on and switch-off of the main circuit power, so that the input power supply of the inverter can
be effectively cut off when a system fault occurs.
D.5.1 Breakers and electromagnetic contactor
s for AC 3PH 400V (-20%)–440V (+10%)
Inverter model
Fuse (A
Breaker
(A)
Rated current of the
contactor (A)
AS28DRV41C5
1
16
10
AS28DRV42C2
17.4
16
10
AS28DRV44C0
30
25
16
AS28DRV45C5
45
25
16
AS28DRV47C5
60
40
25
AS28DRV4011
78
63
32
AS28DRV4015
105
63
50
AS28DRV4018
114
100
63
AS28DRV4022
138
100
80
AS28DRV4030
186
125
95
AS28DRV4037
228
160
120
AS28DRV4045
270
200
135
AS28DRV4055
315
200
170
AS28DRV4075
420
250
230
AS28DRV4090
480
315
280
AS28DRV4110
630
400
315
AS28DRV4132
720
400
380
AS28DRV4160
870
630
450
