Goodrive350-19 series VFD Optional peripheral accessories
-513-
2. Use a megameter of 500 V DC 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.6 Breakers and electromagnetic contactors
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 VFD. 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 VFD.
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 VFD can be
effectively cut off when a system fault occurs.
Table D.3 AC 3PH 380V(-15%)
–440V(+10%)
VFD model
Fuse (A)
Breaker
(A)
Contactor rated current
(A)
GD350-19-1R5G-4-B
15
16
10
GD350-19-2R2G-4-B
17.4
16
10
GD350-19-004G-4-B
30
25
16
GD350-19-5R5G-4-B
45
25
16
GD350-19-7R5G-4-B
60
40
25
GD350-19-011G-4-B
78
63
32
GD350-19-015G-4-B
105
63
50
GD350-19-018G-4-B
114
100
63
GD350-19-022G-4-B
138
100
80
GD350-19-030G-4-B
186
125
95
GD350-19-037G-4-B
228
160
120
GD350-19-045G-4-B
270
200
135
GD350-19-055G-4-B
315
200
170
GD350-19-075G-4-B
420
250
230
GD350-19-090G-4-B
480
315
280
